Lock cylinder protection device of crank lock
By designing a guide connection structure in the lock core protection device of the shaker lock, the problem of the lock core protection cover structure in the prior art is not compact, troublesome to open and close operation and easy to lift, and the stable abutment of the lock core protection cover in the cover and open positions and the neat appearance of the lock core protection cover is achieved.
Patent Information
- Application Number
- CN202421376445.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-14
- Publication Date
- 2025-03-21
- Estimated Expiration
- 2034-06-14
AI Technical Summary
The lock core protective cover of the existing shaking handle lock has problems such as not compact structure, troublesome opening and closing operation, easy to fall, and unsightly lifting in the open state, especially when the lock core is installed on the handle.
A lock core protection device including a lock core, a lock core base, a lock core protective cover and a guide connection structure are designed. The guide connection structure consists of a pivot pin, a guide pin, a guide rocker and a guide groove. Through the synergy of these components, the lock core protective cover can be switched between the cover position and the open position, achieving a compact structure and convenient use.
The lock core protective cover is stable in the cover and open position, avoiding the problem of lifting in the open state, and improving the appearance and convenience of the lock.
Smart Images
Figure CN222649706U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of locks, in particular to a lock core protection device of a hidden crank lock. Background Art
[0002] The lock core keyhole of the existing crank lock is usually equipped with a lock core protection cover to play a protective role such as dust and water. The traditional lock core protection cover is fastened and installed with screws. The opening and closing operation of the lock core protection cover is relatively troublesome, and the protection cover is also easy to fall off. The lock core protection cover on the existing lock is also connected by a hinged connector. A groove is opened on the surface of the lock core base (lock shell or handle). Under the guidance of the hinged connector, the lock core protection cover covers the groove to cover the lock core and pops up from the groove to expose the lock core. The other end of the lock core protection cover also requires a lock buckle structure for locking and unlocking the lock core protection cover. The lock core protection cover is associated with the lock core base (lock shell or handle) for the lock core installation, and is not easy to fall off, but there is a defect of a non-compact structure; and when the lock core protection cover is opened, it rises from the lock core base, which is not only unsightly, but also easily interferes with the key unlocking and locking operations, causing inconvenience in the use of the lock; especially for locks with lock cores installed on the handle. Summary of the invention
[0003] The purpose of the utility model invention is to overcome the defects of the prior art, and to provide a lock cylinder protection device for a crank lock which has a compact structure and is easy to use.
[0004] In order to achieve the above purpose, the utility model provides the following technical solutions:
[0005] A lock core protection device for a crank lock, comprising a lock core, a lock core base, a lock core protection cover and a guide connection structure, wherein the lock core is installed on the lock core base, the head end of the lock core corresponds to the top surface of the lock core base, the lock core protection cover is connected to the lock core base via the guide connection structure, and the guide connection structure guides the lock core protection cover to move between a covering position and an open position relative to the lock core base, characterized in that: the guide connection structure comprises a pivot pin arranged in the middle of the bottom of the lock core protection cover, a guide pin arranged at one end of the bottom of the lock core protection cover, a guide rocker arm pivotally mounted on the lock core base, and guide grooves arranged on both sides of the lock core base in the horizontal direction, the guide rocker arm swings along a surface perpendicular to the top surface of the lock core base, and the bottom of the top surface of the lock core base A rocker arm mounting seat is provided, and a guide rocker arm is pivotally mounted on the rocker arm mounting seat. An avoidance channel leading to the rocker arm mounting seat is provided on the top surface of the lock core base. The extension direction of the guide groove and the swing direction of the guide rocker arm are both adapted to the activity direction of the lock core protective cover. The guide pin is slidably and rotatably supported in the guide groove. The pivot pin of the lock core protective cover is hinged at one end of the guide rocker arm. The guide rocker arm has a vertical position perpendicular to the top surface of the lock core base, a first swing position corresponding to the covering position of the lock core protective cover, and a second swing position corresponding to the opening position of the lock core protective cover. The first swing position and the second swing position are respectively located on both sides of the vertical position, and the lock core protective cover is attached to the lock core base in both the covering position and the opening position.
[0006] Preferably, the guide connection structure also includes a swing spring, and the fixed pivot end of the guide rocker arm is provided with a driving arm that rotates with the guide rocker arm, the driving arm resists the swing end of the swing spring, and the fixed end of the swing spring resists against the base of the lock cylinder, the swing spring is in a compressed state, and the driving arm has two extreme positions and a dead point position, the two extreme positions of the driving arm correspond one by one to the first deflection position and the second deflection position of the guide rocker arm, and the dead point position is located between the two extreme positions, and at the dead point position, the axis of the driving arm coincides with the line of action of the spring force formed by the swing spring.
[0007] Preferably, the swing spring is a torsion spring, both ends of the torsion spring are provided with mounting rings, the driving arm and the lock cylinder base are provided with mounting shaft heads, and the two mounting rings of the torsion spring are sleeved on the two mounting shaft heads in a one-to-one correspondence.
[0008] Preferably, an arc-shaped guide groove is provided on the lock core base, and a guide protrusion is provided on the driving arm. The guide protrusion is positioned and inserted in the arc-shaped guide groove and slides along the arc-shaped guide groove.
[0009] Preferably, the top surface of the lock core base is provided with a recess, and the head end of the lock core corresponds to the recess, and the recess is for the lock core protective cover in the covering position to be buckled into, so that the top surface of the lock core protective cover in the covering position is flush with the top surface of the lock core base.
[0010] Preferably, along the direction of movement of the lock core protective cover from the covering position to the opening position, the guide groove extends obliquely close to the top surface of the lock core base, so as to enable the lock core protective cover to be stacked on the lock core base parallel to the top surface of the lock core base when in the opening position.
[0011] Preferably, one end of the guide groove close to the top surface of the lock core base extends with a disassembly opening penetrating the top surface of the lock core base, and the guide pin is installed into and slides out of the guide groove through the disassembly opening.
[0012] Preferably, the lock core protective cover is provided with pivot pins and guide pins on both lateral sides, each pivot pin is configured with a guide rocker arm, the lock core base is provided with guide grooves corresponding to the guide pins on both lateral sides, and installation cavities are provided on both sides of the lock core base, the guide rocker arm is assembled in the installation cavity, the avoidance channel is connected to the installation cavity, and the installation cavity has an inner installation wall, and an outer cover plate is fixedly installed on the inner installation wall.
[0013] The lock core protection device of the present invention has the following advantages: 1. The lock core protection cover switches between the covering position and the opening position under the guidance of the guide rocker arm, and the corresponding guide rocker arm switches between the first swing position and the second swing position; the guide rocker arm has a vertical position between the first swing position and the second swing position, and the hinged end where the guide rocker arm and the pivot foot are hinged is lower than the vertical position in the first swing position and the second swing position, and the guide pin at one end of the lock core protection cover is guided by the guide groove, and the lock core protection cover is lifted and lowered under the guidance of the guide rocker arm. Specifically, when the guide rocker arm swings to the vertical position, the lock core protection cover is lifted, and when entering the first swing position and the second swing position, the lock core protection cover falls back, and the lock core protection cover can be attached to the lock core base in the covering position and the opening position; thereby preventing the lock core protection cover from tilting up on the lock core base when in the open state, the appearance is neater, and the lock is more convenient to use. 2. The space below the top surface of the lock core base is fully utilized to arrange the guide connection structure, and the overall structure is simple and compact. 3. The lock core protective cover can be reliably and stably in the covering position and the opening position.
[0014] The utility model is further described below in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 This is a diagram showing the closed state of the lock cylinder protective cover of the crank lock of the utility model;
[0016] Figure 2 This is a diagram showing the lock cylinder protective cover of the crank lock of the utility model in an open state;
[0017] Figure 3 This is a disassembled state diagram of the lock core protection device of the crank lock of the utility model;
[0018] Figure 4It is a schematic diagram of the guide connection structure of the crank lock of the utility model when the lock cylinder protection cover is in the closed state;
[0019] Figure 5 It is a schematic diagram of the guide connection structure of the crank lock of the utility model when the lock cylinder protection cover is opened;
[0020] Figure 6 It is a structural schematic diagram of the guide rocker arm of the lock core protection device of the utility model in the vertical position. DETAILED DESCRIPTION
[0021] See attached Figures 1 to 6 The utility model discloses a lock cylinder protection device for a crank lock, which can be applied to a lock shell 1 of a lock or to a handle of a lock. In this specific embodiment, it is applied to a handle, and the lock cylinder base 2 for mounting the lock cylinder is the handle. The lock cylinder protection device includes a lock cylinder 1, a lock cylinder base 2, a lock cylinder protection cover 4, and a guide connection structure. The lock cylinder 1 is mounted on the lock cylinder base 2, and the head end 11 of the lock cylinder 1 corresponds to the top surface of the lock cylinder base 2. The lock cylinder protection cover 4 covers the top surface of the lock cylinder base 2. The lock cylinder protection cover 4 is connected to the lock cylinder base 2 via the guide connection structure. The guide connection structure guides the lock cylinder protection cover 4 to be in a covering position (such as 1.5 mm) relative to the lock cylinder base 2. Figure 1 and Figure 3 ) and the open position (as shown Figure 2 and Figure 4 As shown), the guide connection structure includes a pivot pin 41 arranged at the middle part of the bottom of the lock core protective cover 4, a guide pin 42 arranged at one end of the bottom of the lock core protective cover 4, a guide rocker arm 5 pivotally mounted on the lock core base 2, and a guide groove 22 arranged on both sides of the lock core base 2 in the horizontal direction. A rocker arm mounting seat 23 is provided below the top surface of the lock core base 2, and the guide rocker arm 5 is pivotally mounted on the rocker arm mounting seat 23. The top surface of the lock core base 2 is provided with an avoidance channel 24 leading to the rocker arm mounting seat 23. The guide rocker arm 5 swings along a surface perpendicular to the top surface of the lock core base 2. The extension direction of the guide groove 22 and the swing direction of the guide rocker arm 5 are both adapted to the activity direction of the lock core protective cover 4. The guide pin 42 is slidably and rotatably supported in the guide groove 22. The pivot pin of the lock core protective cover 4 is hinged to one end of the guide rocker arm 5. The guide rocker arm 5 has a vertical position (as shown) perpendicular to the top surface of the lock core base 2. Figure 6 As shown), and the covering position of the lock core protective cover 4 (as shown Figure 4 ) corresponding to the first deflection position, and the opening position of the lock core protective cover 4 (as shown Figure 5The lock cylinder protective cover 4 is in contact with the lock cylinder base 2 in both the covering position and the opening position. The middle part of the lock cylinder protective cover is guided and swung by the guide rocker arm, and one end of the lock cylinder protective cover is limited and guided by the guide groove. The lock cylinder protective cover is associated with the lock cylinder base, which is not easy to lose and is simple and convenient to operate. More importantly, when the lock cylinder protective cover is in the covering position and the opening position, the lock cylinder protective cover is in contact with the top surface of the lock cylinder base, thereby preventing the lock cylinder protective cover from protruding on the lock cylinder base when in the opening state, making the appearance neater and the lock more convenient to use.
[0022] To further facilitate the opening and closing operations of the lock core protective cover, the guide connection structure also includes a swing spring 6. The fixed pivot end of the guide rocker arm 5 is provided with a driving arm 5-1 that rotates with the guide rocker arm 5. The design has a simpler structure. The driving arm 5-1 and the guide rocker arm 5 are integrally formed. The driving arm 5-1 abuts against the swing end of the swing spring 5. The fixed end of the swing spring 6 abuts against the rocker arm mounting seat 23. The swing spring 5 is in a compressed state. The driving arm 5-1 has two extreme positions and a dead point position. The two extreme positions of the driving arm 5-1 correspond one-to-one with the first deflection position and the second deflection position of the guide rocker arm 5, that is, corresponding to the covering position and the opening position of the lock core protective cover 4. The dead point position is located between the two extreme positions. At the dead point position, the axis of the driving arm 5-1 coincides with the line of action of the spring force formed by the swing spring 6. When the lock core protective cover 4 is pushed, in the initial stage, the swing spring is compressed and drives the swing spring 6 to swing. When the driving arm 5-1 reaches the dead point position, the axis of the driving arm 5-1 coincides with the line of action of the spring force formed by the swing spring 6. Theoretically, in the absence of external force input, the driving arm 5-1 can be maintained at the dead point position, but under the drive of external force, after the driving arm 5-1 passes the dead point position, the swing spring 6 provides a spring force to drive the driving arm 5-1 into the extreme position, that is, to drive the lock core protective cover 4 into and maintain the covering position or the opening position, so that the opening and closing operation of the lock core protective cover 4 is more convenient, and the covering and opening states are more stable and reliable; because in actual operation, the operation of the lock core protective cover is difficult to stagnate at the dead point position of the driving arm, so the possibility of the lock core protective cover stopping at the dead point position is small, thereby avoiding the lock core protective cover being in a half-open and half-closed intermediate state.
[0023] The swing spring 6 is a torsion spring, with mounting rings 61 at both ends of the torsion spring. The driving arm 5-1 and the rocker arm mounting seat 23 are both provided with mounting shaft heads, and the two mounting rings 61 of the torsion spring are sleeved on the two mounting shaft heads in a one-to-one correspondence. However, as a feasible implementation, the swing spring can also be a spiral spring. An arc-shaped guide groove 231 is provided on the rocker arm mounting seat 23, and a guide protrusion 5-11 is provided on the driving arm 5-1. The guide protrusion 5-11 is positioned and inserted in the arc-shaped guide groove 231 and slides along the arc-shaped guide groove 231. Similarly, the mounting shaft head for the torsion spring to be hung can also be limited to slide in the arc-shaped guide groove. In this specific embodiment, pivot pins 41 are provided on both sides of the lock core protective cover 4, and each pivot pin 41 is equipped with a guide rocker arm 5, so that both sides of the lock core protective cover 4 are restricted and guided, and the movement of the lock core protective cover 4 is more stable and reliable. Installation cavities are provided on both sides of the rocker arm mounting seat 23, and the guide rocker arm 5 is installed in the installation cavity. Of course, the swing spring 6 corresponding to the guide rocker arm 5 is also placed in the installation cavity. The avoidance channel 24 is connected to the installation cavity, and the installation cavity has an inner installation wall 232, and an outer cover plate 233 is fixedly installed on the inner installation wall. Under this design, not only the installation of the lock core protective cover is more stable and reliable, but also it has the advantages of simple and convenient assembly operation. In addition, the outer cover plate realizes the shielding protection of the guide rocker arm and the swing spring. Therefore, as a person skilled in the art can easily think of, a single pivot pin is set at the horizontal center of the bottom middle position of the lock core protective cover.
[0024] Under the above design, the lock core protective cover has a movement trajectory of rising and falling relative to the top surface of the lock core base 2 during the opening and closing operations. Therefore, a recess 25 can be provided on the top surface of the lock core base 2, and the head end 31 of the lock core 3 corresponds to the recess 25. The recess 25 is for the lock core protective cover 4 in the covering position to be buckled in, so as to make the top surface of the lock core protective cover 4 in the covering position flush with the top surface of the handle 2.
[0025] In the direction of movement of the lock cylinder protective cover 4 from the covering position to the opening position, the guide groove 22 extends obliquely close to the top surface of the lock cylinder base 2, so as to enable the lock cylinder protective cover 4 to be stacked on the lock cylinder base 2 in parallel with the top surface of the lock cylinder base 2 when the lock cylinder protective cover 4 is in the opening position. Under this design, when the lock cylinder protective cover 4 reaches the opening position, one end of the lock cylinder protective cover 4 defined by the guide groove 22 is also lifted for a distance, so that the top surfaces of the lock cylinder protective cover 4 and the handle 2 remain parallel. The end of the guide groove 22 that is toward the open position of the lock cylinder protective cover 4 extends to have a disassembly opening 221 that passes through the top surface of the handle 2, that is, under the inclined design of the guide groove, which is also the end of the guide groove 22 close to the top surface of the lock cylinder base 2 as shown in the figure, the guide pin 42 is installed into and slides out of the guide groove 22 through the disassembly opening 221; one end of the guide groove 22 extends to form the disassembly opening 221. During normal use, the lock cylinder protective cover slides to the open position, and the guide pin is still in the guide groove. When the restriction of the guide rocker arm on the lock cylinder protective cover is released, the guide leg can slide out through the disassembly opening to complete the disassembly.
Claims
1. A lock core protection device for a crank lock, comprising a lock core, a lock core base, a lock core protection cover and a guide connection structure, wherein the lock core is mounted on the lock core base, the head end of the lock core corresponds to the top surface of the lock core base, the lock core protection cover is connected to the lock core base via the guide connection structure, and the guide connection structure guides the lock core protection cover to move between a covering position and an open position relative to the lock core base, characterized in that: The guide connection structure includes a pivot pin arranged in the middle of the bottom of the lock core protective cover, a guide pin arranged at one end of the bottom of the lock core protective cover, a guide rocker arm pivotally mounted on the lock core base, and guide grooves arranged on both sides of the lock core base. The guide rocker arm swings along a surface perpendicular to the top surface of the lock core base. A rocker arm mounting seat is arranged below the top surface of the lock core base. The guide rocker arm is pivotally mounted on the rocker arm mounting seat. An avoidance channel leading to the rocker arm mounting seat is arranged on the top surface of the lock core base. The extension direction of the guide groove and the swing direction of the guide rocker arm are both in line with the lock core protective cover. The guide pin is slidably and rotatably supported in the guide groove in accordance with the movable direction of the protective cover. The pivot pin of the lock core protective cover is hinged at one end of the guide rocker arm. The guide rocker arm has a vertical position perpendicular to the top surface of the lock core base, a first swing position corresponding to the covering position of the lock core protective cover, and a second swing position corresponding to the opening position of the lock core protective cover. The first swing position and the second swing position are respectively located on both sides of the vertical position. The lock core protective cover is attached to the lock core base in both the covering position and the opening position.
2. The lock cylinder protection device of the crank lock according to claim 1, characterized in that: The guide connection structure also includes a swing spring, and the fixed pivot end of the guide rocker arm is provided with a driving arm that rotates with the guide rocker arm, the driving arm resists the swing end of the swing spring, and the fixed end of the swing spring resists on the base of the lock cylinder. The swing spring is in a compressed state, and the driving arm has two extreme positions and a dead point position. The two extreme positions of the driving arm correspond one by one to the first deflection position and the second deflection position of the guide rocker arm. The dead point position is located between the two extreme positions. At the dead point position, the axis of the driving arm coincides with the line of action of the spring force formed by the swing spring.
3. The lock cylinder protection device of the crank lock according to claim 2, characterized in that: The swing spring is a torsion spring, with mounting rings at both ends of the torsion spring, mounting shaft heads on both the driving arm and the lock core base, and the two mounting rings of the torsion spring are sleeved on the two mounting shaft heads in a one-to-one correspondence.
4. The lock cylinder protection device of the crank lock according to claim 3, characterized in that: The lock core base is provided with an arc-shaped guide groove, the driving arm is provided with a guide protrusion, and the guide protrusion is positioned and inserted in the arc-shaped guide groove and slides along the arc-shaped guide groove.
5. The lock cylinder protection device of the crank lock according to claim 1, characterized in that: The top surface of the lock core base is provided with a recess, and the head end of the lock core corresponds to the recess. The recess is for the lock core protective cover in the covering position to be buckled into, so that the top surface of the lock core protective cover in the covering position is flush with the top surface of the lock core base.
6. The lock cylinder protection device of the crank lock according to claim 5, characterized in that: In the direction of movement of the lock core protective cover from the covering position to the opening position, the guide groove extends obliquely close to the top surface of the lock core base, so as to enable the lock core protective cover to be stacked on the lock core base in parallel with the top surface of the lock core base when in the opening position.
7. The lock cylinder protection device of the crank lock according to claim 6, characterized in that: One end of the guide groove close to the top surface of the lock core base is extended with a disassembly opening penetrating the top surface of the lock core base, and the guide pin is installed into and slides out of the guide groove through the disassembly opening.
8. The lock cylinder protection device of the crank lock according to claim 1, characterized in that: The lock core protective cover is provided with pivot pins and guide pins on both lateral sides, each pivot pin is equipped with a guide rocker arm, the lock core base is provided with guide grooves corresponding to the guide pins on both lateral sides, and installation cavities are provided on both sides of the lock core base. The guide rocker arm is assembled in the installation cavity, and the avoidance channel is connected to the installation cavity. The installation cavity has an inner installation wall, and an outer cover plate is fixedly installed on the inner installation wall.