Single-rod double-control coded lock

Abstract

The utility model relates to the technical field of locks, in particular to a single-rod double-control coded lock. Comprising a long-strip-shaped lock shell, a locking mechanism located in the lock shell, a linkage plate slidably installed in the lock shell, a rotary knob rotationally installed on the lock shell, two sets of lock holes formed in the lock shell, a first lock hook located in the lock shell and corresponding to one set of lock holes, and a second lock hook corresponding to the other set of lock holes. The knob can be rotated clockwise / anticlockwise; the knob rotates clockwise to drive the linkage plate to slide forwards, the linkage plate drives the first lock hook to unlock, and the second lock hook keeps locked; the knob rotates anticlockwise to drive the linkage plate to slide reversely, the linkage plate drives the second lock hook to unlock, and the first lock hook is kept locked. Compared with the prior art, parts are reduced, the structure is simplified, and manufacturing cost is reduced.

Description

Technical Field

[0001] This utility model relates to the field of lock technology, specifically to a single-bar dual-control combination lock. Background Technology

[0002] Traditional zipper combination locks for bags typically use a sliding block to move a movable piece, which unlocks or locks the hooks and blocks. However, this type of zipper combination lock has a limited control function; the sliding block unlocks or locks both hooks and blocks simultaneously, making it unsuitable for multi-layered bags. In a traditional two-layer bag, the hooks and blocks lock one layer at a time. If someone wants to open only one layer, using a traditional zipper combination lock, the sliding block moves the movable piece, unlocking both layers simultaneously, which is inconvenient. Furthermore, using a sliding block for unlocking results in a bulky zipper combination lock, and the sliding block requires considerable force, making it inconvenient to operate.

[0003] Later, a technology emerged where rotating the knob clockwise causes a sliding plate to push the lock hooks to unlock, while rotating the knob counterclockwise causes another sliding plate to push another set of lock hooks to unlock. By controlling the two sliding plates independently through the clockwise and counterclockwise rotation of the knob, two sets of lock hooks can be controlled, thus achieving the locking of double-layered bags.

[0004] The above structure is complex and costly, and there is room for improvement. Utility Model Content

[0005] In view of the above-mentioned technical problems, the present invention provides a single-bar dual-control combination lock.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A single-lever dual-control combination lock is provided, comprising an elongated lock housing, a locking mechanism located within the lock housing, a linkage plate slidably installed within the lock housing, a knob rotatably installed within the lock housing, two sets of keyholes formed in the lock housing, a first lock hook located within the lock housing corresponding to one set of keyholes, and a second lock hook located within the lock housing corresponding to the other set of keyholes. The knob can only be rotated clockwise or counterclockwise after the correct command is input into the locking mechanism. Its characteristic is:

[0008] Turning the knob clockwise causes the linkage plate to slide forward, which in turn drives the first lock hook to unlock while the second lock hook remains locked.

[0009] The knob rotates counterclockwise, causing the linkage plate to slide in the opposite direction. The linkage plate drives the second lock hook to unlock while the first lock hook remains locked.

[0010] Specifically, the locking mechanism is located in the middle of the lock housing, and the two sets of keyholes are located on both sides of the locking mechanism.

[0011] Specifically, the two ends of the linkage plate are provided with unlocking slots, and unlocking blocks are provided in the unlocking slots. The slot wall and the unlocking block are engaged by inclined surfaces, so that the linkage plate drives the unlocking block to move and unlock in a perpendicular direction. When the linkage plate slides, it can only drive the unlocking block to slide in one direction while avoiding each other in the other direction.

[0012] Specifically, the locking mechanism includes a combination component and a lock core. The combination component includes a center rod, multiple combination wheels, and multiple adjustment wheels. The multiple adjustment wheels are coaxially installed in the multiple combination wheels in a one-to-one correspondence, and the adjustment wheels rotate together with the corresponding combination wheels. The center rod passes through the multiple adjustment wheels. The center rod can only move axially when the combination wheel rotates to the correct combination. In the locked state, the center rod abuts against and restricts the rotation of the knob.

[0013] The bottom of the knob is equipped with a clutch block, the lock core is installed in the knob and rotates together with the clutch block. The bottom of the clutch block is provided with an unlocking protrusion off-center from the rotation center. The linkage plate is provided with a strip groove for the unlocking protrusion to be inserted, so that rotating the clutch block can drive the linkage plate to slide. In the locked state, the lock core and the knob are relatively fixed. The lock core can be rotated after the correct key is inserted into it.

[0014] Specifically, the knob includes a wrench and a support that are fixed to each other, with the lock core passing through the support and its keyhole protruding from the top of the wrench.

[0015] Specifically, a notch is formed on the outer side of the support, a support arm is provided at the end of the central rod, and the support arm extends into a U-shaped forked arm, which is embedded in the notch; the support is partially supported on the forked arm.

[0016] Specifically, the support is provided with an elastic positioning groove, and the clutch block is provided with a positioning protrusion. In the locked state, the positioning protrusion is embedded in the elastic positioning groove; when the clutch block is subjected to external force, the positioning protrusion can be disengaged from the elastic positioning groove.

[0017] Specifically, the mating surface between the elastic positioning groove and the positioning protrusion is an arc surface; and / or: a mating arc surface is provided between the elastic positioning groove and the support arm.

[0018] Specifically, the combination device also includes a floating plate and a locking plate located at the bottom of the combination wheel. The locking plate is slidably mounted and fixed to the support arm. The floating plate is provided with an auxiliary locking protrusion, and the locking plate is provided with an auxiliary locking groove. In the locked state, the auxiliary locking protrusion is embedded in the auxiliary locking groove to restrict the sliding of the locking plate. The floating plate cooperates with the code-changing wheel. After the combination wheel and the code-changing wheel rotate to the correct combination, the floating plate moves towards the direction of the combination wheel so that the auxiliary locking protrusion disengages from the auxiliary locking groove.

[0019] Specifically, the lock case is also equipped with a support base, and the first and second lock hooks are rotatably mounted on the support base. The support base is integrally formed with a spring arm that abuts against the outside of the combination wheel.

[0020] The beneficial effects of this utility model are as follows: This utility model is a single-lever double-control combination lock. After unlocking, rotating the knob clockwise and counterclockwise can drive the linkage plate to slide in opposite directions. When the linkage plate slides in a certain direction, it can only unlock one set of lock hooks while keeping the other set of lock hooks locked. Therefore, one linkage plate can realize the individual unlocking of two sets of lock hooks. Compared with the prior art, it reduces the number of parts, simplifies the structure, and reduces the manufacturing cost. Attached Figure Description

[0021] The present invention will be further described below with reference to the accompanying drawings. However, the embodiments in the drawings do not constitute any limitation on the present invention. For those skilled in the art, other drawings can be obtained based on the following drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of a single-bar dual-control combination lock in one of the embodiments.

[0023] Figure 2 This is an exploded view of a single-lever dual-control combination lock as described in the embodiment.

[0024] Figure 3 This is a schematic diagram of the internal structure of a single-lever dual-control combination lock as shown in the embodiment.

[0025] Figure 4 This is a schematic diagram of the linkage plate in the embodiment.

[0026] Figure 5 This is a schematic diagram of the locking mechanism in the embodiment.

[0027] Figure 6 This is a partial structural cross-sectional view of the embodiment.

[0028] Figure 7 This is an exploded view of the locking mechanism in the embodiment.

[0029] Figure label:

[0030] Lock case 1, keyhole 11;

[0031] Locking mechanism 2, combination component 21, center rod 211, support arm 212, fork arm 213, combination wheel 214, code wheel 215, floating plate 216, auxiliary locking protrusion 2161, lock plate 217, auxiliary locking groove 2171, lock core 22;

[0032] Linkage plate 3, unlocking slot 31, strip slot 32;

[0033] Knob 4, wrench 41, support 42, notch 421, elastic positioning groove 422;

[0034] First locking hook 5, second locking hook 6, unlocking block 7;

[0035] Clutch block 8, unlocking protrusion 81, positioning protrusion 82;

[0036] Support seat 9, spring arm 91. Detailed Implementation

[0037] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0038] This embodiment describes a single-bar dual-control combination lock, such as... Figures 1 to 7 As shown, the lock includes a long, narrow lock housing 1, a locking mechanism 2 located within the lock housing 1, a linkage plate 3 slidably mounted within the lock housing 1, a knob 4 rotatably mounted within the lock housing 1, two sets of keyholes 11 formed in the lock housing 1, a first lock hook 5 located within the lock housing 1 corresponding to one set of keyholes 11, and a second lock hook 6 corresponding to the other set of keyholes 11. The knob 4 can only be rotated clockwise or counterclockwise after the correct command is input into the locking mechanism 2. The correct command here is the correct password, which will be detailed below. There are two keyholes 11 in each set, and correspondingly, two lock hooks in each set.

[0039] Rotating knob 4 clockwise causes linkage plate 3 to slide forward, which in turn drives the first locking hook 5 to unlock while the second locking hook 6 remains locked. Rotating knob 4 counterclockwise causes linkage plate 3 to slide in the opposite direction, which in turn drives the second locking hook 6 to unlock while the first locking hook 5 remains locked. Here, "first" and "second" are only used to distinguish between them and do not indicate a specific direction; similarly, "forward" and "reverse" are only used to distinguish between them and do not indicate a specific direction.

[0040] Specifically, the locking mechanism 2 is located in the middle of the lock housing 1, and the two sets of lock holes 11 are located on both sides of the locking mechanism 2, close to the two ends of the lock housing 1.

[0041] Specifically, the linkage plate 3 has unlocking grooves 31 at both ends, and unlocking blocks 7 are provided in the unlocking grooves 31. The groove wall of the unlocking groove 31 and the unlocking block 7 are engaged by an inclined surface, so that the linkage plate 3 drives the unlocking block 7 to slide in a perpendicular direction, thereby driving the corresponding lock hook to unlock. When the linkage plate 3 slides, it can only drive the unlocking block 7 to slide in one direction, while avoiding each other in the other direction. When the unlocking block 7 is pushed and moved by the linkage plate 3, the lock hook is unlocked. This transmission is existing technology and will not be described in detail.

[0042] Specifically, the locking mechanism 2 includes a combination lock assembly 21 and a lock core 22. The combination lock assembly 21 includes a central rod 211, multiple combination wheels 214, and multiple dialing wheels 215. The dialing wheels 215 are coaxially mounted in the multiple combination wheels 214, and the dialing wheels 215 rotate together with their corresponding combination wheels 214. The central rod 211 passes through the multiple dialing wheels 215. The central rod 211 can only move axially when the combination wheel 214 rotates to the correct combination. This is achieved through the convex-concave alignment structure on the outer side of the central rod 211 and the inner side of the dialing wheels 215, which is existing technology and will not be elaborated further. In the locked state, the central rod 211 abuts against and restricts the rotation of the knob 4.

[0043] The bottom of the knob 4 is equipped with a clutch block 8. The lock core 22 is installed in the knob 4 and rotates together with the clutch block 8. The bottom of the clutch block 8 is provided with an unlocking protrusion 81 off-center from the rotation center. The linkage plate 3 is provided with a strip groove 32 for the unlocking protrusion 81 to be inserted (arranged along the sliding direction perpendicular to the linkage plate 3), so that rotating the clutch block 8 can drive the linkage plate 3 to slide. Two unlocking protrusions 81 are shown in the figure. Since there is only one linkage plate 3, only one unlocking protrusion 81 is actually used. In the locked state, the lock core 22 is fixed relative to the knob 4. After the correct key is inserted into the lock core 22, the lock core 22 can be rotated, and the lock core 22 drives the clutch block 8 to rotate. At this time, the knob 4 does not rotate.

[0044] Specifically, the knob 4 includes a circular wrench 41 and a support 42 that are fixed to each other. The wrench 41 is operated by the user. The lock core 22 is inserted through the support 42, and the keyhole at the top of the lock core 22 protrudes from the top of the wrench 41. The bottom of the lock core 22 extends out of the support 42 and connects to the clutch block 8.

[0045] Specifically, a notch 421 is formed on the outer side of the support 42, and a support arm 212 is provided at the end of the central rod 211. The support arm 212 extends into a U-shaped forked arm 213, which is embedded in the notch 421. The support 42 is partially supported on the forked arm 213.

[0046] Specifically, the support 42 is provided with an elastic positioning groove 422, and the clutch block 8 is provided with a positioning protrusion 82. In the locked state, the positioning protrusion 82 is embedded in the elastic positioning groove 422, which plays a positioning role. When the clutch block 8 is subjected to external force and rotates, the positioning protrusion 82 can be disengaged from the elastic positioning groove 422.

[0047] Specifically, the mating surface between the elastic positioning groove 422 and the positioning protrusion 82 is an arc surface; and / or: the elastic positioning groove 422 and the support arm 212 are provided with a mating arc surface, which serves as a guide.

[0048] Specifically, the combination component 21 also includes a floating plate 216 and a locking plate 217 located at the bottom of the combination wheel 214. The locking plate 217 is fixed to the support arm 212 and is slidably disposed within the lock housing 1 in the same direction as the sliding direction of the center rod 211 and the linkage plate 3. The floating plate 216 is provided with an auxiliary locking protrusion 2161, and the locking plate 217 is provided with an auxiliary locking groove 2171. In the locked state, the auxiliary locking protrusion 2161 is embedded in the auxiliary locking groove 2171 to restrict the sliding of the locking plate 217. The floating plate 216 cooperates with the code-changing wheel 215. A spring is provided below the floating plate 216. After the combination wheel 214 and the code-changing wheel 215 rotate to the correct combination, the floating plate 216 moves toward the combination wheel 214 to disengage the auxiliary locking protrusion 2161 from the auxiliary locking groove 2171. It can be seen that when the combination lock is engaged, the center rod 211 and the dial wheel 215 play a first-level limiting role, and the floating plate 216 and the lock plate 217 play a second-level limiting role. The double-limit locking provides higher security.

[0049] Specifically, the lock case 1 is also provided with a support seat 9. The first lock hook 5 and the second lock hook 6 are rotatably mounted on the support seat 9. The support seat 9 is integrally formed with a spring arm 91 that abuts against the outside of the combination wheel 214, which guides the combination wheel 214 to rotate step by step.

[0050] In the description of this utility model, it is obvious that the described embodiments are only a part of the embodiments of this utility model, and not all of them. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0051] Therefore, the above detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0052] In the description of this utility model, it should be noted that the terms "middle," "upper," "lower," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product is in use. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance. In the description of this utility model, it should be noted that unless otherwise explicitly specified and limited, the terms "set," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection. They can refer to a mechanical connection or an electrical connection. They can refer to a direct connection or an indirect connection through an intermediate medium, or a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

Claims

1. A single-lever dual-control combination lock, comprising a long strip-shaped lock shell (1), a locking mechanism (2) located in the lock shell (1), a linkage plate (3) slidably installed in the lock shell (1), a knob (4) rotatably installed in the lock shell (1), two sets of lock holes (11) formed in the lock shell (1), a first lock hook (5) located in the lock shell (1) corresponding to one set of lock holes (11), and a second lock hook (6) corresponding to the other set of lock holes (11), wherein the knob (4) can only be rotated clockwise / counterclockwise after the correct command is input into the locking mechanism (2); its characteristic is: The knob (4) rotates clockwise, causing the linkage plate (3) to slide forward. The linkage plate (3) drives the first locking hook (5) to unlock while the second locking hook (6) remains locked. The knob (4) rotates counterclockwise, causing the linkage plate (3) to slide in the opposite direction. The linkage plate (3) drives the second lock hook (6) to unlock while the first lock hook (5) remains locked.

2. The combination lock with single-bar dual control according to claim 1, characterized in that: The locking mechanism (2) is located in the middle of the lock housing (1), and the two sets of lock holes (11) are located on both sides of the locking mechanism (2).

3. A single-bar dual-control combination lock according to claim 1, characterized in that: The two ends of the linkage plate (3) are provided with unlocking grooves (31), and unlocking blocks (7) are provided in the unlocking grooves (31). The groove wall of the unlocking groove (31) and the unlocking block (7) are connected by an inclined surface, so that the linkage plate (3) drives the unlocking block (7) to move and unlock in a direction perpendicular to each other. When the linkage plate (3) slides, it can only drive the unlocking block (7) to slide in one direction while avoiding each other in the other direction.

4. A single-bar dual-control combination lock according to claim 1, characterized in that: The locking mechanism (2) includes a combination component (21) and a lock core (22). The combination component (21) includes a center rod (211), multiple combination wheels (214) and multiple dialing wheels (215). The multiple dialing wheels (215) are coaxially installed in the multiple combination wheels (214) in a one-to-one correspondence, and the dialing wheels (215) rotate together with the corresponding combination wheels (214). The center rod (211) passes through the multiple dialing wheels (215). The center rod (211) can only move axially when the combination wheel (214) rotates to the correct combination. In the locked state, the center rod (211) abuts against the limiting knob (4) to rotate. The bottom of the knob (4) is provided with a clutch block (8), the lock core (22) is installed in the knob (4) and rotates together with the clutch block (8). The bottom of the clutch block (8) is provided with an unlocking protrusion (81) off the rotation center. The linkage plate (3) is provided with a strip groove (32) for the unlocking protrusion (81) to be embedded, so that rotating the clutch block (8) can drive the linkage plate (3) to slide. In the locked state, the lock core (22) is fixed relative to the knob (4). After the correct key is inserted into the lock core (22), the lock core (22) can be rotated.

5. A single-bar dual-control combination lock according to claim 4, characterized in that: The knob (4) includes a wrench (41) and a support (42) that are fixed to each other, with the locking core (22) passing through the support (42) and its keyhole protruding from the top of the wrench (41).

6. A single-rod double-control combination lock according to claim 5, characterized in that: a notch (421) is formed on the outer side of the support (42), a support arm (212) is provided at the end of the central rod (211), the support arm (212) extends into a U-shaped forked arm (213), the forked arm (213) is embedded in the notch (421); the support (42) is partially supported on the forked arm (213).

7. A single-bar dual-control combination lock according to claim 6, characterized in that: The support (42) is provided with an elastic positioning groove (422), and the clutch block (8) is provided with a positioning protrusion (82). In the locked state, the positioning protrusion (82) is embedded in the elastic positioning groove (422); the clutch block (8) can rotate under external force to make the positioning protrusion (82) disengage from the elastic positioning groove (422).

8. A single-bar dual-control combination lock according to claim 7, characterized in that: The mating surface between the elastic positioning groove (422) and the positioning protrusion (82) is an arc surface; and / or: the elastic positioning groove (422) and the support arm (212) are provided with a mating arc surface.

9. A single-bar dual-control combination lock according to claim 6, characterized in that: The combination component (21) also includes a floating plate (216) and a locking plate (217) located at the bottom of the combination wheel (214). The locking plate (217) is slidably disposed and fixed to the support arm (212). The floating plate (216) is provided with an auxiliary latch protrusion (2161), and the locking plate (217) is provided with an auxiliary latch groove (2171). In the locked state, the auxiliary latch protrusion (2161) is embedded in the auxiliary latch groove (2171) to restrict the sliding of the locking plate (217). The floating plate (216) cooperates with the code wheel (215). After the combination wheel (214) and the code wheel (215) turn to the correct combination, the floating plate (216) moves toward the combination wheel (214) so ​​that the auxiliary latch protrusion (2161) disengages from the auxiliary latch groove (2171).

10. A single-bar dual-control combination lock according to claim 4, characterized in that: The lock case (1) is also provided with a support seat (9), and the first lock hook (5) and the second lock hook (6) are rotatably mounted on the support seat (9). The support seat (9) is integrally formed with a spring arm (91) that abuts against the outside of the combination wheel (214).

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