CN115961829A

CN115961829A - Lockset with limiting mechanism

Info

Publication number: CN115961829A
Application number: CN202111179235.8A
Authority: CN
Inventors: 向德钊
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-10-09
Filing date: 2021-10-09
Publication date: 2023-04-14

Abstract

The invention relates to the technical field of locks, and discloses a lock with a limiting mechanism, which comprises: a fixing member; the rotary transmission assembly is rotatably connected with the fixed piece; the limiting mechanism comprises a first limiting part arranged on the fixing part and a second limiting part arranged on the rotary transmission assembly, and when the rotary transmission assembly rotates, the first limiting part and the second limiting part can mutually abut against each other and prevent the rotary transmission assembly from continuously rotating. According to the limiting mechanism for the lockset, disclosed by the embodiment of the invention, the circumferential rotation stroke of the rotating body is limited by using the limiting mechanism, so that the rotation range of the rotary transmission assembly can be limited, and the lockset is prevented from being unlocked due to over rotation of the rotary transmission assembly.

Description

Lockset with limiting mechanism

Technical Field

The invention relates to the technical field of locks, in particular to a limiting mechanism for a lock.

Background

The lock is a device for locking a movable first object at a fixed second object to realize a closing function, and comprises a lock body, a key and accessories thereof.

An existing lock comprises a knob, a lock ruler is driven through manual rotation of the knob, and then a lock tongue is driven to extend out to achieve counter locking. During the back locking process, however, an excessive turning of the knob is liable to occur, resulting in undesired unlocking.

Therefore, how to provide a lock which is convenient and reliable to operate becomes a technical problem to be solved.

Disclosure of Invention

The invention aims to solve the technical problem of how to prevent the knob from rotating excessively.

Therefore, the invention discloses a lockset with a limiting mechanism in a first aspect, which comprises: a fixing member; the rotary transmission assembly is rotatably connected with the fixed piece; and the limiting mechanism comprises a first limiting part arranged on the fixing part and a second limiting part arranged on the rotary transmission assembly, and when the rotary transmission assembly rotates, the second limiting part can abut against the first limiting part and prevent the rotary transmission assembly from continuously rotating.

The second aspect of the present invention discloses a lock with a position-limiting mechanism, comprising: the rotary transmission assembly is rotatably connected with a fixed piece; and the limiting mechanism comprises a first limiting part arranged on the fixing part and a second limiting part arranged on the rotary transmission assembly, and when the rotary transmission assembly rotates, the second limiting part can abut against the first limiting part and prevent the rotary transmission assembly from continuously rotating.

In some embodiments, the rotation transmission assembly includes a knob assembly and a lock ruler transmission assembly fixedly connected to the knob assembly, and the knob assembly is capable of driving the lock ruler transmission assembly to rotate.

In some embodiments, the knob assembly includes a knob disposed on a first axial side of the fixing member and a limiting disc disposed on a second axial side of the fixing member, the knob being fixedly connected to the limiting disc; the first limiting part is a stop block arranged on the second axial side of the fixing part, and the second limiting part is a limiting bulge arranged on the limiting disc.

In some embodiments, a positioning column is disposed on a surface of the knob facing the limiting plate, a mounting hole is disposed on the limiting plate corresponding to the positioning column, and the positioning column passes through the fixing member and is connected to the limiting plate.

In some embodiments, the first limiting member includes a first stopper and a second stopper that are spaced apart from each other, and the first stopper and the second stopper are connected by an arc-shaped connecting portion.

In some embodiments, the elastic reset piece is arranged between the fixed piece and the rotary transmission assembly, and the elastic reset piece can apply elastic force for resetting the rotary transmission assembly when the rotary transmission assembly rotates.

In some embodiments, the elastic reset member includes a torsion spring, the torsion spring includes a torsion spring main body and a torsion spring fixing portion located at an end portion of the torsion spring, wherein the torsion spring main body is disposed around at least a portion of the rotation transmission assembly, and the torsion spring fixing portion can be abutted by the fixing member.

In some embodiments, the torsion spring fixing portion includes a first tang and a second tang respectively disposed at two ends of the torsion spring, and the fixing member includes a toggle block, wherein the first tang is abutted by the toggle block when moving in a first rotational direction, and the second tang is abutted by the toggle block when moving in a second rotational direction opposite to the first rotational direction.

In some embodiments, the lock rule transmission assembly includes a lock cylinder and a lock rule, the lock cylinder is disposed at one end of the lock rule and is used for being connected with an external key, and the second position-limiting member is fixed relative to the lock rule.

The third aspect of the present invention discloses a lock with a position-limiting mechanism, comprising: the limiting mechanism is rotatably connected with a fixed piece; the locking ruler component can be driven by the knob to rotate; and the limiting mechanism comprises a first limiting part arranged on the fixing part and a second limiting part arranged on the knob or the locking rule component, and when the knob or the locking rule component rotates, the second limiting part can abut against the first limiting part and prevent the knob or the locking rule component from continuously rotating.

The invention has the following beneficial effects:

according to the limiting mechanism for the lockset, disclosed by the embodiment of the invention, the circumferential rotation stroke of the rotating body is limited by using the limiting mechanism, so that the rotation range of the rotary transmission assembly can be limited, and the lockset is prevented from being unlocked due to over rotation of the rotary transmission assembly.

Drawings

FIG. 1 is an exploded perspective view of a lock with a position limiting mechanism according to an embodiment of the present invention;

FIG. 2 is an exploded isometric view of the latch of FIG. 1 from another angle;

FIG. 3 is a schematic view of the spacing mechanism of the lock of FIG. 1 in an initial state;

FIG. 4 is a schematic view of the stop mechanism of the latch of FIG. 1 rotated in a first rotational direction to a first stop position;

figure 5 is a schematic view of the stop mechanism of the latch of figure 1 rotated in a second rotational direction to a second stop position.

Reference numerals

11. A knob; 12. a locking ruler transmission component; 13. a limiting disc; 20. a fixing member; 21. a first stopper; 22. a second stopper; 23. a second through hole; 24. a shifting block; 25. an end plate; 26. a side wall; 110. a first through hole; 111. a hollow positioning column; 112. a concave-convex structure; 121. a lock cylinder; 122. a protrusion; 123. locking the ruler; 131. a limiting bulge; 201. mounting holes; 216. a panel; 217. a back plate; 220. a limiting disc assembly; 223. a knob hole; 213. a limiting disc; 214. a front housing; 215. a rear housing; 230. a bayonet;

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In addition, the technical features involved in the different embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.

Referring to fig. 1 to 3, a lock 100 according to a first embodiment of the present invention includes a rotation transmission assembly and a limit mechanism. The rotary transmission assembly comprises a limiting mechanism 11 and a locking ruler assembly 12. The knob assembly 11 includes a knob 110 rotatably coupled to a stationary member 20. The fixing member 20 may be a lock cover fixed to the object to be locked, a lock mounting plate, or even the object to be locked itself, for example: doors, windows, etc. That is, the fixing member may be a component of the lock or may be a separate device from the lock. In either case, the fixing member 20 can be used as a static reference for the lock of the present invention, although in actual use, the fixing member 20 together with the lock may move as the object to be locked moves.

In the present embodiment, the fixing element 20 is taken as a lock cover for detailed description, that is, the lock of the present embodiment includes the fixing element 20. In the present invention, the side of the fixing member 20 facing the knob 11 is defined as the outer side, and the side facing away from the knob 11 is defined as the inner side. The inner side of the fixing member 20 is provided with a plurality of mounting holes 201 for fixing with the object to be locked, such as a door.

The knob 11 is disposed on the outer side of the fixing member 20, and is substantially in the shape of a hollow cylinder with one open end, a first through hole 110 is disposed at the center of a closed end of the knob 11, and a positioning column 111 is disposed on the periphery of the first through hole 110 on the inner side surface of the closed end. In this embodiment, the plurality of positioning pillars 111 in the knob 11 are arranged circumferentially around the first through hole 110.

In this embodiment, the locking rule driving assembly 12 includes a lock cylinder 121 and a locking rule 123, the lock cylinder 121 is disposed at one end of the locking rule 123, and the lock cylinder is used for a user to insert a key into the lock cylinder from the outside and rotate the lock cylinder to unlock or lock the lock. The lock cylinder 121 is substantially cylindrical and has a protrusion 122 protruding radially outward at one side of the outer circumference thereof. In other embodiments, not shown, the locking rule may not be connected to the key cylinder, and one end of the locking rule may be another rotatable object, such as directly fixed to the knob.

The key cylinder 121 is adapted to be inserted into the first through hole 110 of the knob 11. The protrusion 122 of the lock cylinder 121 is clamped between two adjacent positioning columns of the knob 11, so that the lock cylinder 121 can be driven to rotate when the knob 11 is turned.

The knob assembly 11 further includes a limiting disc 13 fixed to the knob 110, and the limiting disc is located on the axial inner side of the fixing member 20. The limiting disc 13 is provided with a plurality of mounting holes 132 corresponding to the plurality of positioning posts 111 of the knob 11.

In the present embodiment, the fixing member 20 has a substantially disk shape, and includes a circular end plate 25 and an annular side wall 26 extending perpendicularly from the outer periphery of the end plate 25. The center portion of the end plate 25 is provided with a second through hole 23. The locking ruler transmission assembly 12 and the plurality of positioning columns 111 at least partially pass through the second through holes 23, and the plurality of positioning columns 111 correspond to the plurality of mounting holes 132 on the limiting disc 13 one by one, so that a fixing member can pass through, for example: the knob 11 and the limiting disc 13 are relatively fixed by screws. Thus, when the knob 11 is manually rotated by a user, the stopper plate 13 is rotated. In addition, the locking rule transmission assembly 12 is also driven to rotate by the knob 11. Preferably, the knob 11 is further provided with a concave-convex structure 112 on the periphery thereof for easy grip.

In this embodiment, the positioning posts 111 protrude from the inner surface of the closed end of the knob 11, a certain distance is formed between the positioning posts 111 and the inner circumferential surface of the knob 11, and each positioning post 111 is connected to the inner circumferential surface of the knob 11 through a rib, so as to enhance the mechanical strength of the positioning post 111 and improve the reliability of torque transmission.

In this embodiment, the periphery of the limiting disc 13 is provided with a limiting protrusion 131, and correspondingly, two limiting stoppers, namely a first stopper 21 and a second stopper 22, are disposed on the inner side of the fixing member 20 and on the periphery of the second through hole 23. Further reference is made to fig. 3 to 4. When the knob 11 is rotated in the first direction, such that the limiting protrusion 131 is rotated from the initial position (shown in fig. 3) to the first limiting position (shown in fig. 4), at the first limiting position, the limiting protrusion 131 is abutted by the first stopper 21, such that the knob 11 cannot be further rotated in the first direction. Similarly, when the knob 11 is rotated in the second direction, so that the limiting protrusion 131 is rotated to the second limiting position (as shown in fig. 5), at the second limiting position, the limiting protrusion 131 is abutted by the second stopper 22, so that the knob 11 cannot be further rotated in the second direction. So that the rotation angle of the key cylinder 121 is restricted.

In this embodiment, the first stopper 21 and the second stopper 22 each protrude from the inner surface of the end plate of the fixing member 20, and preferably, the radial outer sides of the first and second stoppers extend to be connected with the inner surface of the side wall 26 of the fixing member 20. In other embodiments, the first and second stops may also protrude from the inner surface of the sidewall 26 toward the middle of the fixing member, and the stopping effect of the limiting protrusion can also be achieved.

Preferably, the first and

second stoppers

21 and 22 are connected by a connecting portion, which preferably extends in an arc shape along the circumferential direction of the fixing member 20. Connecting portion can strengthen the bulk strength of first dog 21 and second dog 22, improve the reliability to spacing protruding backstop.

In a further preferred embodiment, the limiting mechanism further comprises an elastic resetting piece. In this embodiment, the elastic restoring member is a torsion spring (not shown). The inner side of the fixed part 20 is further provided with a shifting block 24, and the shifting block 24 is located between the first stop 21 and the second stop 22 in the circumferential direction. The torsion spring is arranged around the limiting disc 13, and the two ends of the torsion spring are respectively provided with a first tang and a second tang which extend outwards along the radial direction. The first tang and the second tang are at least partially supported on either side of the stop boss 131. And the first tang and the second tang further extend in the radial direction so that when the position limiting protrusion 131 is located at the initial position, the first tang and the second tang are located on both sides of the dial block 24, respectively. Therefore, when the user rotates the knob 11 to drive the limiting disc 13 to rotate towards the first rotation direction, the second stem abuts against the toggle block 24, the first stem abuts against the limiting protrusion 131, and the torsion spring is compressed due to torsion force, so that an elastic force capable of enabling the limiting disc 13 to return to the initial position is applied to the limiting disc 13. Similarly, when the knob 11 is rotated in the second rotation direction, the limiting disc 13 is also subjected to a spring force that can return the limiting disc to the initial position.

In the above embodiment, the limiting protrusion 131 provided on the limiting disc 13 and the first stopper 21 and the second stopper 22 provided on the fixing member 20 together constitute a limiting mechanism, so as to limit the rotation degree of the knob 11 and avoid the unlocking caused by over-rotating the knob 11.

In an alternative, the stop of the stop mechanism may be arranged on the outside of the fixing element 20, i.e. on the side facing the knob. Specifically, the limit stop may protrude to the outer side of the first through hole 110 of the knob 11, and the limit stop extends along the axial direction, so that when the locking rule transmission assembly 12 is rotated, the protrusion 122 of the locking rule transmission assembly 12 extending along the radial direction thereof can abut against the limit stop. At this time, the protrusion 122 of the locking rule transmission assembly 12 functions as a limiting protrusion 131.

Similarly, in other alternatives not shown, for example, a stop of the limit mechanism may be provided radially inside the above-mentioned knob, and a limit projection may be provided on a side of the fixing member facing the knob. Or a stop block of a limiting mechanism can be arranged on one side, deviating from the knob, of the fixing piece, and a corresponding limiting protrusion is arranged on the locking ruler assembly. That is, the stopper of the limiting mechanism can be arranged at any position on the fixing member, and any position on the rotary transmission assembly can be provided with a limiting protrusion corresponding to the stopper of the limiting mechanism, so that when the rotary transmission assembly rotates relative to the fixing member, the stopper of the limiting mechanism can be stopped to rotate by being blocked by the limiting protrusion on the fixing member.

It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications therefrom are within the scope of the invention.

Claims

1. A lock with a limiting mechanism is characterized by comprising:

a fixing member (20);

a rotation transmission assembly rotatably connected with the fixed member (20); and the limiting mechanism comprises first limiting parts (21 and 22) arranged on the fixing part (20) and a second limiting part (131) arranged on the rotary transmission assembly, and when the rotary transmission assembly rotates, the second limiting part (131) can abut against the first limiting parts (21 and 22) and prevent the rotary transmission assembly from continuously rotating.

2. A lock with a limiting mechanism is characterized by comprising:

the rotary transmission component is rotatably connected with a fixed part (20); and

the limiting mechanism comprises first limiting parts (21 and 22) arranged on the fixing part (20) and a second limiting part (131) arranged on the rotary transmission assembly, and when the rotary transmission assembly rotates, the second limiting part (131) can abut against the first limiting parts (21 and 22) and prevent the rotary transmission assembly from continuously rotating.

3. The lock with limit mechanism according to claim 1 or 2, wherein the rotation transmission assembly comprises a knob assembly and a lock rule transmission assembly (12) fixedly connected with the knob assembly, the knob assembly can drive the lock rule transmission assembly (12) to rotate.

4. The lock with the limiting mechanism according to claim 3, wherein the knob assembly comprises a knob (11) and a limiting disc (13), the knob (11) is disposed on a first axial side of the fixing member (20), the limiting disc (13) is disposed on a second axial side of the fixing member (20), and the knob (11) is fixedly connected with the limiting disc (13);

the first limiting parts (21, 22) are stoppers arranged on the second axial side of the fixing part (20), and the second limiting part (131) is a limiting protrusion arranged on the limiting disc (13).

5. The lock with the limiting mechanism according to claim 4, wherein a positioning column is disposed on a surface of the knob facing the limiting disc, a mounting hole is disposed on the limiting disc corresponding to the positioning column, and the positioning column penetrates through the fixing member and is connected to the limiting disc.

6. The lock with a limiting mechanism according to claim 4, wherein the first limiting member (21, 22) comprises a first stop and a second stop which are arranged at intervals, and the first stop and the second stop are connected by an arc-shaped connecting portion.

7. The lock with the limiting mechanism according to claim 1 or 2, further comprising an elastic resetting member, wherein the elastic resetting member is disposed between the fixing member (20) and the rotary transmission assembly, and the elastic resetting member can apply an elastic force to the rotary transmission assembly for resetting the rotary transmission assembly when the rotary transmission assembly rotates.

8. The lock with the limiting mechanism according to claim 7, wherein the elastic reset member comprises a torsion spring, the torsion spring comprises a torsion spring main body and a torsion spring fixing portion at an end portion of the torsion spring, the torsion spring main body is disposed around at least a portion of the rotation transmission assembly, and the torsion spring fixing portion can be abutted by the fixing member (20).

9. The lock with limit mechanism according to claim 8, wherein said torsion spring fixing portion comprises a first tang and a second tang respectively provided at both ends of said torsion spring, and said fixing member (20) comprises a toggle block (24), wherein said first tang is abutted by said toggle block (24) when moving in a first rotational direction, and said second tang is abutted by said toggle block (24) when moving in a second rotational direction opposite to the first rotational direction.

10. The lock with the limiting mechanism according to claim 3, wherein the lock rule transmission assembly comprises a lock cylinder (121) and a lock rule (123), the lock cylinder (121) is disposed at one end of the lock rule (123) for connecting with an external key, and the second limiting member is fixed relative to the lock rule.

11. A lock with a limiting mechanism is characterized by comprising:

the limiting mechanism is rotatably connected with a fixing piece (20);

a locking ruler component which can be driven by the knob to rotate;

the limiting mechanism comprises first limiting parts (21 and 22) arranged on the fixing part (20) and a second limiting part (131) arranged on the knob or the lock ruler component, and when the knob or the lock ruler component rotates, the second limiting part (131) can abut against the first limiting parts (21 and 22) and prevent the knob or the lock ruler component from continuing to rotate.