TWI428500B - Cylindrical lock set and bolt assembly - Google Patents

Description

Cylindrical lock set and bolt assembly Field of invention

The present invention relates to a cylindrical lock assembly, and a bolt assembly for placement in a door and other movable members adapted to close an access opening. For convenience, the following description is particularly illustrative of the invention, but the invention may have broader applications.

Background of the invention

The cylindrical lock assembly is an assembly having a base for placement in a substantially cylindrical bore formed between the door panel and the outer surface. The base is movably coupled to a bolt assembly disposed in a transverse bore extending from the door edge to the cylindrical bore at a periphery of the cylindrical bore closest to the door edge.

The assembly of the aforementioned cylindrical lock assembly requires drilling a cylindrical hole in the surface of the door panel to accommodate the base of the lock assembly. The cylindrical bore is disposed at a specific distance from the edge of the door panel according to a backset of the bolt assembly. The bolt assembly typically forms a long rear distance, a short rear distance, or a short rear distance that can be inserted into the body to grow and lay. Furthermore, in the past, bolt assemblies tend to be suitable only for doors that are hinged.

A problem with conventional lock assemblies is that it can be difficult to determine the extent to which the assembly is locked. More specifically, when the lock assembly is locked, it often requires a key to rotate a component of the lock assembly to a locked position, and it may be difficult to determine if the locked position has been reached. Especially from a cylindrical lock assembly On the side, there is no actuator, such as a knob or the like, for the user to test. Although the inner actuator can be tested while the user is on the inside, it is not always convenient to test the actuator to ensure that the lock is locked. This may cause the lock to remain unlocked and may contain serious security issues.

Another problem with conventional lock assemblies is that there is no compromise between making the assembly relatively small and delicate, and being sufficiently strong to resist strong damage. In particular, the cylindrical lock assembly has this problem because most of the lock assemblies must be placed in a relatively small cylindrical bore formed in the door panel.

For locksmiths and the like, it is often necessary to reassemble the tumbler coding for the inner cylinder lock of the cylindrical lock assembly. A common difficulty with this work is the need to disassemble the cylindrical lock assembly several times to extend into the lock cylinder.

Therefore, it is necessary to provide a cylindrical lock assembly that solves at least one of these problems. It is particularly desirable to provide a cylindrical lock assembly that is easier to assemble and adapt. In addition, it is desirable to provide a cylindrical lock assembly that is more robust. Furthermore, it is preferred that the bolt assembly can be provided for more applicability.

The lock elements and the like discussed above are included in this specification for the purpose of providing the description of the present invention. This is not an implied or indicates that any of the above matters is part of the prior art as it was already in Australia prior to the filing date of the patent priority, or general general knowledge in the relevant art of the invention.

The invention has been described and defined herein with reference to its general application. For example, internal and external nouns are the normal orientation of the assembly in accordance with the present application. I will be It is also possible to solve other directions.

Summary of invention

According to a feature of the present invention, a cylindrical lock assembly is provided for sharing with a door panel, the lock assembly including: a bolt assembly for positioning in a lateral direction extending from an edge of the door panel formed in the door panel Within the bore, the bolt assembly includes a bolt that is linearly movable between an actuated position and a non-actuated position; a base for placement in a cross-section formed in the door panel and extending between opposite faces of the door panel The pedestal is movably coupled to the bolt assembly, the base includes a housing that houses a shuttle that is linearly movable relative to the housing Between a first position and a second position to move the bolt between the actuating and non-actuating positions, respectively; the actuator device includes a rotatable member that is operative when the actuator device is actuated The housing is rotated about a rotation axis to move the shuttle between the first and second positions, and the actuator device is actuable by a first key to actuate from the outside of the lock assembly. To rotate the rotatable member, and by means of a An engageable device is actuated from an inner side of the lock assembly to rotate the rotatable member; and a locking device that, when in an active state, disables the actuator device to rotate the rotatable member from both the inner and outer sides .

Preferably, the first key actuating lock is actuatable to cause the state of the locking device to be active or inactive. Further preferably, the cylinder The lock assembly includes a second key actuating lock that is actuatable to cause the state of the locking device to be active or inactive.

Preferably, the locking device acts between the rotating member and the housing to fix the rotational position of the rotating member relative to the housing. Preferably, the locking device includes at least one dice that is movable between an active position and an inactive position in a direction transverse to the axis of rotation such that the actuator device does not actuate respectively Can be actuated. Preferably, a latching biasing device is included for biasing the at least one latch to the inactive position.

Preferably, the cylindrical lock assembly includes visual indicating means for visually indicating the actuation state of the locking device.

Preferably, the shuttle includes a retracting body for operatively engaging the bolt assembly, and a slider for operatively engaging the actuator device and acting on the actuator device Between the bodies is withdrawn such that the rotational movement of the rotating member can cause linear movement of the withdrawn body and movement of the bolt. Further preferably, the retracting body includes at least one clamping portion for engaging the bolt assembly. Further preferably, the slider includes a bag for receiving a protrusion associated with the rotating member when the shuttle is moved between the first and second positions. It is further preferred to include a shuttle biasing device for biasing the shuttle to the first or second position. Further preferably, the shuttle biasing device includes a spring that is coupled by an ear, whereby rotation of the rotating member can cause relative movement between the spring and the ear to provide when the shuttle is located The potential is stored between the first and second positions and the stored energy is released when the shuttle reaches the first or second position. Preferably, the spring is associated with the housing and the ear is Associated with the rotating member.

Preferably, the tactile indication device is included to generate a tactile signal when the actuation state of the locking device changes from inactive to actuated. Further preferably, the haptic indicating device comprises a biasing device for urging a reactive component, the biasing device stores potential when the operating state of the locking device is not actuated, and when the locking device is activated The stored energy is released when the actuation is changed to actuate, whereby the biasing device can move the reaction element to engage a surface of the lock assembly to generate a tactile signal.

According to another feature of the present invention, an adjustable bolt assembly is provided for attachment to a base of a cylindrical lock assembly that is actuatable to move a bolt of the bolt assembly The bolt assembly is movable between a short or long back set mode between a non-actuated position and an actuated position and moved back to the inactive position, and includes: a housing; a bolt, The utility model is movable between an actuating position and a non-actuating position for respectively extending from and withdrawing from the housing; a pull rod having a head end connected to the bolt; a tail rod having a tail The tail end is connected to the base when in use; and the tail rod is adjustably connected to the pull rod to adjust the position of the head end of the pull rod relative to the tail end of the tail rod to adjust the bolt assembly The actuation mode is between a short rearward distance and a long rearward distance, the connection of the tailbar to the drawbar allowing the bolt to move between the inactive position and the actuated position and back to the inactive position.

Preferably, the tail rod is connected to the pull rod by a locking device.

Preferably, the locking device includes a recess extending in a longitudinal axis of the bolt assembly. Further preferably, the recess is disposed in the tail rod and is provided with a locking component, the locking component passes through the recess and is disposed in a hole formed in the pull rod.

Preferably, the tail rod includes another recess for receiving an ear portion coupled to the pull rod to assist the pull rod when being adjusted between the short rear distance and the long rear distance, relative to The tail rod moves linearly.

Preferably, in the adjustable bolt assembly, the bolt is attached to the tie rod by a pin.

According to another embodiment of the present invention, there is provided a bolt assembly for forming a portion of the cylindrical lock assembly by a base coupled to the cylindrical lock assembly, the bolt assembly being used Attaching a striker, the bolt assembly includes: a housing having a longitudinal axis; a link member coupled to the base and movable relative thereto, and diametrically opposite to the housing Moving; two hook bolts are movable relative to the link member in a direction substantially perpendicular to the longitudinal axis, in an extended position in which the impact plate is engaged during use, and a hook is used in use The impact plate is disengaged between the retracted positions.

Preferably, the bolt assembly includes a panel coupled to a backing plate associated with the housing, the panel having a hole for at least a portion of each of the hooks when the hooks are in the extended position Passing through, wherein each of the hooks includes an engaging portion that can be engaged when the hook bolt is in the extended position during use The impact plate, and an interaction portion that interacts with the panel when the hook bolt moves toward the extended position.

Preferably, each of the hook bolts is pivoted about an axis substantially perpendicular to the longitudinal axis of the housing.

Preferably, the pivot of each of the hook bolts is coaxial.

Preferably, the hook bolts are pivoted to a single pin.

It is further preferred that a portion of the link member passes through a hole in the panel when the hook bolts are in the extended position.

Further preferably, the link member is adjustable in length for actuation in a short rear distance or a long rear distance mode. The link member preferably includes a tie rod and a tail rod that are adjustably attached to each other to adjust the length thereof.

According to another feature of the invention, a cylindrical lock set is provided comprising a previously defined cylindrical lock assembly and a previously defined bolt assembly.

Several embodiments of the present invention will be described in detail below with reference to the drawings. However, it is to be understood that the detailed description and the drawings are merely illustrative of how the present invention acts. The particular forms and configurations of the various features shown and described are not intended to limit the invention, which is defined by the scope of the claims.

Simple illustration

Figure 1 is a partial exploded view of the cylindrical lock assembly close to a door panel; Figure 2 is an exploded view of the cylindrical lock assembly removal bolt assembly; Figure 3 is a view of the bolt assembly suitable for An exploded view of a first embodiment of a hinged door; Figure 4 is an exploded rear view of the rotating member, the shuttle and the housing; and Figure 5 is an exploded view of the second embodiment of the bolt assembly suitable for a sliding door.

Detailed description of the preferred embodiment

First, as shown in Fig. 1, it shows the components of the cylindrical lock assembly, including an inner member 1, an outer member 2, and a bolt assembly 3. The inner member 1 is normally disposed inside the door panel 4, and the outer member 2 is disposed outside the door panel 4 such that the two members are connected by a pair of fixing screws (not shown). This direction is obviously not necessary. The inner member 1 includes a base 5 for placement in a transverse perforation 6 formed in the surface of the door panel 4. The bolt assembly 3 is disposed in a transverse bore 7 extending from the door edge. The base 5 includes a housing 8 and a shuttle 9, which only shows the clamping portion 10 in the first figure. Although the function of the shuttle 9 with respect to the housing 8 will be explained with reference to the following figures, it is important that the clamping portion 10 of the shuttle is connected to a connecting member 11 of the bolt assembly 3 from Fig. 1. The shuttle 9 is movable relative to the housing 8 to move the bolt 12 of the bolt assembly 3 to an actuated extended position (as shown in Fig. 1), with a non-actuated retracted position (not shown) Show) between.

As shown in Fig. 2, the inner member 1 and the outer member 2 are shown in an exploded view. First concentrated on the outer member 2, it includes an outer cylindrical housing 13 formed with a hole 14 for receiving the first or outer key actuating lock 15. The key actuating lock 15 is shown to include a housing 16 for a barrel 17 to be rotated within the housing 16 when an authorized key 18 is inserted into the keyway of the barrel. The cylinder 17 is movably coupled to a tail rod 19 so that the rotation of the cylinder 17 can be made The rotation of the tail rod 19 is made. The tail boom 19 is then an element that is coupled to the inner member 1 of the cylindrical lock assembly, the manner of which will be described in the following description.

The inner member 1 shown in Fig. 2 is a display of the base 5, and has the housing 8 for accommodating the shuttle 9. The shuttle 9 is formed in two parts, including a shoe 20 on one side of the housing 8, and a withdrawal plate 21 on the other side. The shoe 20 includes the clamping jaws 10 that engage the bolt assembly 3 and the retracting plate 21 engages with a rotating member 23 of the movable body 22. The withdrawal plate 21 is coupled to the shoe 20 via a recess 24 formed in a base of the housing 8 to limit linear movement of the shuttle relative to movement of the housing. Moreover, the length of the grooves also limits the length of the linear movement. These ear portions 25 are preferably as shown in Fig. 4.

The withdrawal plate 21 includes a bag body 26 for an ear portion 27 coupled to the rotating member 22 to be disposed therein. The ear 27 of the actuating body is obscured in Fig. 2 and is visible in Fig. 4. The configuration of the ear 27 and the pocket 26 is such that the rotating member 22 is rotatable to cause the withdrawal plate 21 to move. The other ear portion 28 on the rear surface of the rotating member 22 engages a biasing plate 29 to urge the rotating member 22 to thereby urge the shuttle 9 toward the retracted or extended position.

The rotation of the rotating member 22 can be performed from the inside by rotation of a hand-engageable device, which is shown in Fig. 2 as a knob 30. The rotating member 22 can also be rotated from the outside by the rotation of the tail rod 19.

The cylindrical lock assembly also includes a locking device 31 that, in the illustrated embodiment, includes a pair of detents 32 that are coupled to the rotating member 22. The locking device also includes a drive member 34 that is oriented in a direction toward a locking position Rotating causes the dice 32 to move radially to an extended or active position. The dice 32 will be partially located within a recess (not shown) formed in an inner cylindrical housing 35 when in the active position. When the inner cylindrical housing 35 is fixed relative to the door 4, it locks the position of the rotating member 22 relative to the housing 35 to prevent it from being rotated. The drive member 34 is rotatable by actuation of the first or outer locking cylindrical lock 15 or the second or inner cylindrical lock 36. Rotation of the barrel in the opposite direction will cause rotation of the drive member 34 away from the locked position, and further rotation of the barrel will cause rotation of the rotating member 22 and movement of the catch 32 away from the active position. . A biasing device in the form of a spring 33 can be included to assist in the movement of the latches 32 away from the active position, although this is not an essential component.

The drive member 34 of the locking device can also be operatively coupled to a pointing device 37 located within the hand-engageable knob. The pointing device 37 can provide a visual and tactile indication of the state of the locking device. The visual indicator shown includes a pivotable two-part member 38 that interacts with the window 39 of the knob 30. The member 38 is pivoted about an axis transverse to the axis X-X. The member 38 includes a pair of surfaces 38a, 38b which are preferably red and green, respectively, whereby the red surface 38a is located in the window 39 when the locking device 31 is activated. Conversely, the green surface 38b is located in the window 39 when the locking device 31 is inactive. The tactile indication device includes a ball 40 biased by a compression spring 41 to engage one of the two recesses formed in the knob 30 when the locking device reaches the active or inactive state. This provides a user with a tactile indication to indicate that the locking device 31 is in an active or inactive state.

As shown in Fig. 3, the bolt assembly 3 is shown in an exploded view. Shown The bolt assembly includes a two-part housing 42, 43 that houses the bolt 12, a pull rod 44, and a tail rod 45. The housing member 43 engages the outer surface of an outer casing 65 of the inner member 1 of the cylindrical lock assembly (see FIG. 2), and a connecting member 52 engages the inner surface of the outer casing 65. The position of the housing element 43 can thus be fixed relative to the cylindrical lock assembly. The housing member 42 is axially moveable relative to the housing member 43 between a short back setting and a long rear spacing. The housing members 42 and 43 are held in a given rear by an interlocking ring 66 and an ear portion of the housing member 42 and an arm portion 68 of the housing member 43. From the distance.

The pull rod 44 is shown attached to the bolt 12 by a pin 46 passing through a through hole 47 in the rear end of the bolt 12. The head 48 of the pull rod 44 is formed with a hole 64 for the pin 46 to pass through.

The tie rod 44 is coupled to the tail rod 45 by a fastener 49, which in the illustrated embodiment is in the form of a screw. Of course the form of this fastener is variable. The stem of the screw passes through a slot 50 of the tail bar 45 to be secured within the threaded bore 51 of the tie rod 44. The tail boom 45 is shown to include a second slot 62 that receives a guide lug 63 of the pull rod 44. The configuration of the slot allows the user to slide the pull rod 44 relative to the tail rod 45 to select a short backset or long back spacing for the bolt assembly.

A T-shaped portion 69 of the tail boom 45 is formed to be coupled to the clamping portion 10 of the shuttle 9 to move the tail rod together with the shuttle 9.

The bolt assembly is also provided with a panel 53. Four fixing screws can pass through the panel 53 and the holes in the housing 42 for fixing the bolt assembly 3 to the edge of the door 4.

As shown in Fig. 5, it shows that the bolt assembly 3 is mainly suitable for another embodiment of a sliding door. Features of the embodiment as shown in Fig. 3 are denoted by the same reference numerals. The bolt assembly 3 includes a housing 70 and a connecting member 52 that is coupled to the base 5 of the cylindrical lock assembly in a manner similar to that described with reference to FIG.

The bolt assembly 3 of the preferred embodiment includes a link member 71 that, in the illustrated embodiment, includes a bolt 12 and a pull rod 72 that is coupled to the bolt 12 by a pin 46. The pull rod 72 can be coupled to the base 5 of the cylindrical lock assembly in substantially the same manner as described with respect to the embodiment of Fig. 3. In detail, the movement of the shuttle 9 will move the bolt 12 relative to the housing 70. Although the illustrated embodiment shows only one tie rod, a tail rod can be incorporated to allow the present embodiment to be adjusted between long and short rearranges in a manner similar to that described with reference to FIG.

The embodiment of the bolt assembly 3 shown in Fig. 5 differs from that shown in Fig. 3 in that it includes a pair of hooks 73, 74. These hooks are moved relative to the link member 71 in a direction substantially perpendicular to the longitudinal axis YY of the housing 70. The hooks 73, 74 are preferably pivoted about a single pin 75 that passes through a hole 76 formed in the screw 12, however, other forms of movement and attachment of the hooks 73, 74 Also OK.

Each of the hooks 73, 74 has an engaging portion 76, 77 and an engaging portion 78, 79. The engaging portions 76, 77 engage the impact plate 80, and the interactive portions 78, 79 can interact with a panel 81 that is coupled to a backing plate 82 that is coupled to the housing 70.

The hooks 73, 74 are disposed in the bolt 12 in the housing 70 when in a retracted position. To move the hooks 73, 74 to an extended position, The link member 71 is moved toward the impact plate 80 in the direction of the vertical axis YY. The hooks 73, 74 pass through a hole 83 formed in the panel 81 such that the interaction portions 78, 79 of the hooks 73, 74 can be hooked to the panel when the link member 71 is moved. On the back surface. This causes the hooks 73, 74 to pivot to move the engaging portions 76, 77 behind the rear surface of the impact plate 80. Conversely, moving the link member 71 away from the impact plate 80 will cause the hooks 73, 74 to disengage from the impact plate 80 and into the housing 70.

It will be apparent from the foregoing that the present invention provides a cylindrical lock assembly that is easy to assemble. The ability to adjust the back spacing of the bolt assembly without the use of additional components is a preferred advantage of the present invention. Further providing a visual or tactile indication of the state of the locking device by the user is another preferred advantage of the present invention. The ability of the bolt assembly to be adapted to a sliding door configuration is also an advantage.

A variety of alternative implementations, modifications, and/or additions may be introduced to the construction and configuration of the aforementioned components without departing from the spirit or scope of the invention as defined by the scope of the claims.

1‧‧‧ internal parts

2‧‧‧External components

3‧‧‧Bolt assembly

4‧‧‧ Door panel

5‧‧‧Base

6‧‧‧ transverse perforation

7‧‧‧ transverse holes

8, 16, 42, 43, 70‧‧‧ shells

9‧‧‧ Shuttle

10‧‧‧Clamping Department

11‧‧‧Connecting components

12‧‧‧ bolt

13‧‧‧Outer cylindrical shell

14, 64, 76, 83‧ ‧ holes

15‧‧‧First or external key lock

17‧‧‧Cylinder

18‧‧‧ key

19, 45‧‧‧ tail rod

20‧‧‧Shoes

21‧‧‧Withdrawal board

22‧‧‧Activity

23‧‧‧Rotating components

24‧‧‧ Groove

25, 27, 28‧‧ Ears

26‧‧‧ bag body

29‧‧‧Polar plate

30‧‧‧ Turn button

31‧‧‧Locking device

32‧‧‧掣子

33‧‧‧ Spring

34‧‧‧ drive components

35‧‧‧Inner cylindrical housing

36‧‧‧Second or inner cylindrical lock

37‧‧‧ indicating device

38‧‧‧ pivotable two-part component

39‧‧‧Window

44, 72‧‧‧ rods

46, 75‧ ‧ sales

47‧‧‧Perforation

48‧‧‧ head

49‧‧‧fasteners

50‧‧‧ slots

51‧‧‧ screw holes

52‧‧‧Connecting components

53, 81‧‧‧ panels

62‧‧‧second trough

63‧‧‧leading ears

65‧‧‧Outer casing

66‧‧‧Locking ring

68‧‧‧ Arms

71‧‧‧Connector components

73, 74‧‧‧Check

76, 77‧‧‧ Connections

78, 79‧‧‧Interactive Department

80‧‧‧impact board

82‧‧‧ Backplane

Figure 1 is a partial exploded view of the cylindrical lock assembly close to a door panel; Figure 2 is an exploded view of the cylindrical lock assembly removal bolt assembly; Figure 3 is a view of the bolt assembly suitable for An exploded view of a first embodiment of a hinged door; FIG. 4 is an exploded rear view of the rotating member, the shuttle and the housing; and FIG. 5 is a second embodiment of the bolt assembly suitable for a sliding door Exploded map.

1‧‧‧ internal parts

2‧‧‧External components

3‧‧‧Bolt assembly

4‧‧‧ Door panel

5‧‧‧Base

6‧‧‧ transverse perforation

7‧‧‧ transverse holes

8‧‧‧shell

9‧‧‧ Shuttle

10‧‧‧Clamping Department

11‧‧‧Connecting components

12‧‧‧ bolt

Claims (31)

A cylindrical lock assembly for use with a door panel, the lock assembly comprising: a bolt assembly for being disposed in a transverse hole formed in the door panel extending from an edge of the door panel, the bolt assembly comprising a bolt linearly movable between an actuating position and a non-actuating position; a base for positioning in a transverse perforation formed in the door panel and extending between opposite faces of the door panel to a hole connection, the base is movably coupled to the bolt assembly, the base includes a body for receiving a shuttle, the shuttle is linearly movable relative to the housing in a first and second position Between the two, respectively, the bolt can be moved between the actuating and non-actuating positions; the actuator device includes a rotatable member that is rotatable relative to the housing when the actuator device is actuatable a rotating shaft is rotated to move the shuttle between the first and second positions, and the actuator device is actuated by the first key to actuate the outer side of the lock assembly to rotate the rotatable member. And can be connected to the lock assembly by one hand Side actuated to rotate the rotatable member; and a locking means, which causes the actuator means when in an active state can not be actuated to rotate the rotatable member from both the inner and the outer. The cylindrical lock assembly of claim 1, wherein the first key actuating lock is actuated to cause the state of the locking device to be in an active or inactive state. The cylindrical lock assembly of claim 1 or 2, comprising a second key actuating lock operable to cause the state of the locking device to be made With or without action. The cylindrical lock assembly of claim 1, wherein the locking device acts between the rotating member and the housing to fix a rotational position of the rotating member relative to the housing. The cylindrical lock assembly of claim 1 or 2, wherein the locking device comprises at least one dice that is movable in an action position and a non-action in one direction transverse to the axis of rotation Between the positions, so that the actuator device is not actuated and actuatable. The cylindrical lock assembly of claim 3, comprising a tweezers biasing device for pressing the at least one tweezers to the inactive position. The cylindrical lock assembly of claim 1 or 2, comprising a visual indicating device for visually indicating the actuation state of the locking device. The cylindrical lock assembly of claim 1 or 2, wherein the shuttle includes a retracting body for operatively engaging the bolt assembly and a sliding member for operatively engaging The actuator device acts between the actuator device and the retracting body such that rotational movement of the rotating member can cause linear movement of the retracting body and movement of the bolt. The cylindrical lock assembly of claim 8, wherein the retracting body comprises at least one clamping portion for engaging the bolt assembly. The cylindrical lock assembly of claim 8, wherein the sliding member comprises a bag body for accommodating and rotating the shuttle when the shuttle is moved between the first and second positions. A convex portion associated with the member. The cylindrical lock assembly of claim 8, comprising a shuttle biasing device for pressing the shuttle to the first or second position. The cylindrical lock assembly of claim 11, wherein the shuttle biasing device comprises a spring engaged by an ear, whereby rotation of the rotating member causes the spring and the ear The relative movement between the two stores to store the potential when the shuttle is between the first and second positions, and to release the stored energy when the shuttle reaches the first or second position. The cylindrical lock assembly of claim 12, wherein the spring is associated with the housing and the ear is associated with the rotating member. The cylindrical lock assembly of claim 1 or 2, comprising a tactile indication device for generating a tactile signal when the actuation state of the locking device is changed from inactive to actuated. The cylindrical lock assembly of claim 14, wherein the tactile indication device comprises a biasing device for pressing a reactive element, the biasing device being inactive when the locking device is actuated Storing potential, and releasing stored energy when the operating state of the locking device changes from inactive to actuating, whereby the biasing device can move the reactive element to engage a surface of the locking assembly to generate a tactile sensation Signal. An adjustable bolt assembly for forming a portion of the cylindrical lock assembly by being coupled to a base of a cylindrical lock assembly, the cylindrical lock assembly being actuatable to assemble the bolt assembly a bolt is moved between a non-actuated position and an actuated position and moved back to the inactive position, the bolt assembly is movable between a short or long rear distance mode, and includes: a casing; a bolt, The device is movable between an actuating position and a non-actuating position to extend and withdraw from the housing respectively; a pull rod having a head end coupled to the bolt; a tail rod having a tail end for attachment to the base when in use; and wherein the tail rod is adjustably coupled to the pull rod to adjust the pull rod Positioning the head end relative to the tail end of the tail rod to adjust the actuation mode of the bolt assembly between a short rear distance and a long rear distance, the connection of the tail rod to the tie rod allows the bolt to be in a non-actuated position and Move between the actuating positions and move back to the inactive position. The adjustable bolt assembly of claim 16, wherein the tail rod is coupled to the rod by a locking device. The adjustable bolt assembly of claim 17, wherein the locking device includes a recess extending in a longitudinal axis of the bolt assembly. The adjustable bolt assembly of claim 18, wherein the recess is disposed in the tail rod and is provided with a locking component, the locking component passes through the recess and is disposed in the Inside a hole in the drawbar. The adjustable bolt assembly of claim 19, wherein the tail rod includes another recess for receiving an ear portion coupled to the pull rod to facilitate adjustment of the pull rod after the short When it is between the distance and the long rear distance, it moves linearly with respect to the tail rod. The adjustable bolt assembly of any one of claims 16 to 20, wherein the bolt is attached to the tie rod by a pin. A bolt assembly for forming a portion of the cylindrical lock assembly by a base coupled to a cylindrical lock assembly, the bolt assembly engaging an impact plate in use, the bolt assembly comprising: a housing having a longitudinal axis; a link member coupled to the base and movable therewith and movable relative to the housing in the direction of the longitudinal axis; and two hook bolts relative to the link The member is moved in a direction substantially perpendicular to the longitudinal axis between an extended position that engages the impact plate during use and a retracted position that disengages the hook from the impact plate during use. The bolt assembly of claim 22, comprising a panel connected to a backing plate associated with the housing, the panel having a hole for providing the hooks when in the extended position At least a portion of each of the hooks passes through. The bolt assembly of claim 23, wherein each of the hook bolts includes an engaging portion that engages the impact plate when the hook bolt is in the extended position during use, and an interaction portion The hook bolt interacts with the panel as it moves toward the extended position. A bolt assembly according to any one of claims 22 to 24, wherein each of the hook bolts is pivoted about an axis substantially perpendicular to a longitudinal axis of the housing. The bolt assembly of claim 25, wherein the pivot of each of the hook bolts is coaxial. The bolt assembly of claim 26, wherein the hook bolts are pivoted to a single pin. The bolt assembly of claim 23 or 24, wherein a portion of the link member extends through the hook bolts in the extended position Holes in the panel. A bolt assembly according to any one of claims 22 to 24, wherein the link member is adjustable in length for actuation in a short rear distance or a long rear distance mode. The bolt assembly of claim 29, wherein the link member comprises a pull rod and a tail rod that are adjustably attached to each other to adjust the length thereof. A cylindrical lock set comprising a cylindrical lock assembly according to any one of claims 1 to 15 and a bolt assembly according to any one of claims 16 to 30.