A combination lock with internal tension

Abstract

This invention relates to the field of lock technology, specifically to an internally tightened combination lock, comprising a lock body for installation on one opening side of a bag and a lock hook for installation on the other opening side of the bag. The connecting end of the lock body is provided with a base for fixing to the bag. The base is provided with a first pivot, and the lock body is hinged to the base via the first pivot. The free end of the lock body is used to lock with the lock hook. The lock body includes a push torrent, a transmission component, and a locking assembly. The locking assembly restricts the movement of the push torrent via the transmission component. The push torrent is provided with a latch that engages with the lock hook. The bottom of the lock hook is provided with a mounting plate, and the mounting plate is provided with a pull hook. The inner side of the lock body is provided with a pull hook and a second pivot. The second pivot and the first pivot are arranged side by side but not on the same line. The pull hook is hinged to the lock body via the second pivot. When the lock body moves in the locking direction, the pull hook hooks the pull hook and pulls it towards the base to achieve the purpose of pre-positioning, reducing the force on the lock hook and lock hook, and providing higher security performance with double locking.

Description

Technical Field

[0001] This invention relates to the field of lock technology, and more specifically to an internally tightened combination lock. Background Technology

[0002] One end of the combination lock is hinged to one opening side of the suitcase, and the other end is locked to the other opening side of the suitcase. Opening the combination lock disengages it from the other opening side of the suitcase, allowing the suitcase to be opened. The structure of a combination lock generally includes a locking block and a combination mechanism that controls the movement of the locking block. The combination mechanism includes a combination component and a movable block. The combination component controls the movement of the locking block through the movable block, while the locking block controls the movement of the latch or clasp, thereby locking or unlocking the combination lock. For example, Chinese patent document CN209556637U discloses "A Combination Lock for a Suitcase"; Chinese patent document CN215407959U discloses "A Combination Lock".

[0003] Existing combination locks mainly rely on the interlocking between the hook and the latch to achieve locking. However, there are some areas for improvement: the hook inserts into the lock body and engages with the latch on the push button. The hook exerts a large pulling force on the latch, especially when used in hard-framed bags such as aluminum cases, where the force on the latch is even greater. Consequently, the hook requires high strength. Furthermore, the latch on the push button must be compatible with the latch, limiting the scope for improvement. Summary of the Invention

[0004] To address the aforementioned technical problems in existing technologies, this invention provides an internally tightened combination lock.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A combination lock with internal tension is provided, including a lock body for installation on one opening side of a bag and a lock hook for installation on the other opening side of the bag. The connecting end of the lock body is provided with a base for fixing to the bag. The base is provided with a first pivot, and the lock body is hinged to the base via the first pivot. The free end of the lock body is used to lock with the lock hook.

[0007] The lock body includes a push knob, a transmission component, and a locking assembly. The locking assembly restricts the movement of the push knob via the transmission component. The push knob is provided with a latch that engages with the lock hook. When unlocking, the locking assembly controls the movement of the transmission component to release the constraint on the push knob. An external force presses the push knob to disengage the latch from the lock hook, thereby causing the lock body to flip around the hinge.

[0008] The bottom of the lock hook is provided with a mounting plate, the mounting plate is provided with a pull hook, the inner side of the lock body is provided with a pull buckle and a second rotating shaft, the second rotating shaft and the first rotating shaft are arranged side by side but not on the same line, the pull buckle is hinged to the lock body via the second rotating shaft, when the lock body moves in the locking direction, the pull buckle hooks the pull hook and pulls it tight towards the base.

[0009] Specifically, the top of the hook is bent away from the base, the buckle is sheet-shaped, and the buckle has a pull hole that can be inserted into the hook.

[0010] Specifically, the pull hook includes a first pull hook and a second pull hook, and the pull buckle is provided with a corresponding first pull hole and a second pull hole.

[0011] Specifically, the lock body includes a lock shell, and a viewing plate is provided on the top of the lock shell, which is aligned with the mating position of the pull tab and the hook.

[0012] Specifically, the viewing panel and the lock case are interlocked and fixed together.

[0013] Specifically, the locking assembly includes a combination wheel set and a lock plate. The lock plate is slidably mounted on the bottom of the combination wheel set and is equipped with a spring. After the correct combination is entered into the combination wheel set, the spring drives the lock plate to move, so that the lock plate drives the transmission component to move.

[0014] Specifically, the lock plate has a V-shaped protrusion and the transmission component has a V-shaped groove. In the locked state, the protrusion is embedded in the groove. In the unlocked state, the protrusion moves out of the groove along the mutually cooperating inclined surface, so as to drive the transmission component to move in a direction perpendicular to the sliding direction of the lock plate.

[0015] Specifically, the transmission component is equipped with a clearance groove, and the push knob is equipped with a limit post. In the locked state, the limit post and the clearance groove are misaligned and abut against the transmission component; in the unlocked state, the limit post is aligned with the clearance groove to allow the push knob to move freely.

[0016] Specifically, there are two push knobs, located on opposite sides of the transmission component.

[0017] Specifically, the locking assembly also includes a key lock cylinder, which is located on top of the transmission component. After the correct key is inserted into the key lock cylinder, it can be rotated to drive the transmission component to move.

[0018] The beneficial effects of this invention are:

[0019] This invention discloses an internally tightened combination lock. Due to the inclusion of a pull buckle and a hook, when the lock body rotates to engage with the hook, the pull buckle pre-hooks the hook and pulls it towards the base before the buckle and hook engage. This fixes the relative position of the mounting plate and the base plate, achieving pre-positioning. With continued rotation of the lock body, the hook accurately inserts into the lock body and engages with the buckle, improving the user experience. Furthermore, the main stress-bearing parts of the lock body and hook on the two opening sides of the bag are the pull buckle and hook. Previously, the hook and hook, which were primarily responsible for locking, only bore relatively small forces, thus requiring less strength. However, the pull buckle and hook are covered by the lock body, and the combined locking of the hook and buckle, and the pull buckle and hook, provides higher security and makes the required strength easier to achieve in manufacturing. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of an internally tightened combination lock in one of the embodiments.

[0021] Figure 2 This is a schematic diagram of the hidden partial lock shell of an internally tightened combination lock according to an embodiment.

[0022] Figure 3 This is an exploded view of an internally tightened combination lock as described in the embodiment.

[0023] Figure 4 This is a schematic diagram of the pull tab in the embodiment.

[0024] Figure 5 This is a partial schematic diagram of the lock body in the embodiment.

[0025] Figure label:

[0026] Lock body 1, lock shell 11, first hinge hole 111, second hinge hole 112, push knob 12, limit post 121, lock buckle 122, transmission component 13, groove 131, clearance groove 132, transparent plate 14;

[0027] Locking assembly 2, combination wheel assembly 21, lock plate 22, protrusion 221, key lock cylinder 23;

[0028] 3. Locking hook; 4. Mounting plate; 5. Pull hook; 6. Base; 7. Pull buckle; 8. Pull hole. Detailed Implementation

[0029] The present invention will be described in detail below with reference to specific embodiments and accompanying drawings.

[0030] This embodiment features an internally tightened combination lock, such as... Figures 1 to 5As shown, the lock includes a lock body 1 for installation on one opening side of the bag and a lock hook 3 for installation on the other opening side of the bag. The two lock hooks 3 stand facing each other on the mounting plate 4. The connecting end of the lock body 1 is provided with a base 6, which is used to fix it to the bag. The base 6 is provided with a first pivot. The lock body 1 is hinged to the base 6 through a first hinge hole 111 and the first pivot. The free end of the lock body 1 is used to lock with the lock hook 3. The lock body 1 includes a lock shell 11, a push knob 12, a transmission component 13, and a locking assembly 2. The two push knobs 12 are arranged facing each other on both sides of the lock shell 11 and are partially exposed for operation. The transmission component 13 is slidably installed in the lock shell 11. The locking assembly 2 restricts the movement of the push knobs 12 through the transmission component 13. The two push knobs 12 are respectively provided with a latch 122 that engages with the two lock hooks 3. During unlocking, the locking assembly 2 controls the movement of the transmission component 13 to release the constraint on the push knob 12. External force presses the push knob 12, causing the latch 122 to disengage from the lock hook 3, thereby causing the lock body 1 to flip around the hinge. In practice, the push knob 12 is equipped with a conventional return spring.

[0031] In this embodiment, the locking assembly 2 includes a combination wheel set 21 and a locking plate 22. The locking plate 22 is slidably mounted on the bottom of the combination wheel set 21. The locking plate 22 is equipped with a spring. After the correct combination is entered into the combination wheel set 21, the spring drives the locking plate 22 to move, thereby causing the locking plate 22 to drive the transmission component 13 to move. This technology is a common technology for locks and will not be elaborated here. Furthermore, the locking plate 22 has a V-shaped protrusion 221, and the transmission component 13 has a V-shaped groove 131. In the locked state, the protrusion 221 is embedded in the groove 131; in the unlocked state, the protrusion 221 moves out of the groove 131 along the mutually cooperating inclined surface, thereby driving the transmission component to move in a direction perpendicular to the sliding direction of the locking plate 22. The transmission component 13 is provided with a clearance groove 132, and the push knob 12 is provided with a limit post 121. In the locked state, the limit post 121 is offset from the clearance groove 132 and abuts against the transmission component 13; in the unlocked state, the limit post 121 is aligned with the clearance groove 132 to allow the push knob 12 to move and make room for movement.

[0032] In this embodiment, the locking assembly 2 also includes a key lock cylinder 23, which is located on the top of the transmission member 13. After the correct key is inserted into the key lock cylinder 23, the key lock cylinder 23 can be rotated to drive the transmission member 13 to move.

[0033] In this embodiment, the mounting plate 4 is provided with a hook 5, and the inner side of the lock body 1 is provided with a latch 7 and a second pivot. The second pivot and the first pivot are arranged side by side but not on the same line. The latch 7 is hinged to the second hinge hole 112 of the lock body 1 via the second pivot. When the lock body 1 moves in the locking direction, the latch 7 hooks the hook 5 and pulls it towards the base 6. Specifically, the top of the hook 5 is bent away from the base 6, the latch 7 is plate-shaped, and the latch is provided with a pull hole 8 that can be inserted into the hook 5. The hook 5 includes a first hook and a second hook, and the latch 7 is provided with a corresponding first pull hole and a second pull hole.

[0034] During use, as the lock body 1 rotates towards the hook 3, before the latch 122 engages with the hook 3, the pull buckle 7 pre-hooks the hook 5 and pulls it towards the base 6. This fixes the relative position of the mounting plate 4 and the base plate, achieving the pre-positioning purpose. When the lock body 1 continues to rotate, the hook 3 can accurately insert into the lock body 1 and engage with the latch 122, improving the user experience. Furthermore, the force-bearing parts of the lock body 1 and hook 3 on the two opening sides of the bag are mainly the pull buckle 7 and the hook 5. The hook 3, which originally bore the main force, largely plays the role of locking and bears less force. Therefore, the strength requirements for the hook 3 and latch 122 are low. However, the hook 5 and pull buckle 7 are covered by the lock body 1. Combined with the double locking of the hook 3 and latch 122, and the hook 5 and pull buckle 7, the security performance is higher, and its strength is easier to achieve in manufacturing.

[0035] In this embodiment, a transparent plate 14 is provided on the top of the lock housing 11. The transparent plate 14 is snapped and fixed to the lock housing 11. The transparent plate 14 is aligned with the engagement position of the buckle 7 and the hook 5, so as to facilitate observation of the engagement of the buckle 7 and the hook 5 inside.

[0036] In the description of this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0037] All standard parts used in this invention can be purchased from the market, and irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art, and the circuit connection adopts conventional connection methods in the prior art, which will not be described in detail here.

[0038] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

[0039] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit the scope of protection of the present invention. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the essence and scope of the technical solutions of the present invention.

Claims

1. An internally tightened combination lock, characterized in that: It includes a lock body for installation on one opening side of a bag and a lock hook for installation on the other opening side of the bag. The connecting end of the lock body is provided with a base for fixing to the bag. The base is provided with a first pivot, and the lock body is hinged to the base via the first pivot. The free end of the lock body is used to lock with the lock hook. The lock body includes a push knob, a transmission component, and a locking assembly. The locking assembly restricts the movement of the push knob via the transmission component. The push knob is provided with a latch that engages with the lock hook. When unlocking, the locking assembly controls the movement of the transmission component to release the constraint on the push knob. An external force presses the push knob to disengage the latch from the lock hook, thereby causing the lock body to flip around the hinge. The bottom of the lock hook is provided with a mounting plate, the mounting plate is provided with a pull hook, the inner side of the lock body is provided with a pull buckle and a second rotating shaft, the second rotating shaft and the first rotating shaft are arranged side by side but not on the same line, the pull buckle is hinged to the lock body via the second rotating shaft, when the lock body moves in the locking direction, the pull buckle hooks the pull hook and pulls it tight towards the base.

2. The combination lock with internal tension as described in claim 1, characterized in that: The top of the hook is bent away from the base, the buckle is sheet-shaped, and the buckle has a pull hole that can be inserted into the hook.

3. The combination lock with internal tension according to claim 2, characterized in that: The pull hook includes a first pull hook and a second pull hook, and the pull buckle is provided with a corresponding first pull hole and a second pull hole.

4. The combination lock with internal tension according to claim 1, characterized in that: The lock body includes a lock shell, and a viewing plate is provided on the top of the lock shell. The viewing plate is aligned with the mating position of the pull buckle and the hook.

5. The combination lock with internal tension according to claim 4, characterized in that: The viewing panel and the lock case are interlocked and fixed together.

6. The combination lock with internal tension according to claim 1, characterized in that: The locking assembly includes a combination wheel set and a lock plate. The lock plate is slidably mounted on the bottom of the combination wheel set and is equipped with a spring. After the correct combination is entered into the combination wheel set, the spring drives the lock plate to move, so that the lock plate drives the transmission component to move.

7. A combination lock with internal tension according to claim 6, characterized in that: The locking plate has a V-shaped protrusion, and the transmission component has a V-shaped groove. In the locked state, the protrusion is embedded in the groove. In the unlocked state, the protrusion moves out of the groove along the mutually cooperating inclined surface, thereby driving the transmission component to move in a direction perpendicular to the sliding direction of the locking plate.

8. The combination lock with internal tension according to claim 7, characterized in that: The transmission component is equipped with a clearance groove, and the push knob is equipped with a limit post. In the locked state, the limit post and the clearance groove are misaligned and abut against the transmission component; in the unlocked state, the limit post is aligned with the clearance groove to allow the push knob to move freely.

9. A combination lock with internal tension according to claim 8, characterized in that: There are two push knobs, located on opposite sides of the transmission component.

10. A combination lock with internal tension according to claim 8, characterized in that: The locking assembly also includes a key lock cylinder, which is located on top of the transmission component. After the correct key is inserted into the key lock cylinder, it can be rotated to drive the transmission component to move.

Images