Modular blade lock cylinder telescopic stability enhancement mechanism

Abstract

This invention provides a mechanical device for improving the stability of the cylinder extension and retraction of a modular blade lock, relating to the field of blade lock technology. It includes a modular blade lock body, inside which a cylinder body is assembled. The cylinder body has several blade slots, with integrally formed slot-spacer ribs between adjacent blade slots. A first rolling structure is provided on the blade slots. A first spring group located inside a first placement side slot elastically pushes against a first inner frame and a first rotating wheel, continuously adhering to the outer walls of the front and rear blades. The elastic extension and retraction of the first spring group automatically compensates for machining errors, assembly gaps, and long-term wear gaps, maintaining a tight fit between the first rotating wheel and the blades. Simultaneously, it provides lateral support for the moving blades, limiting radial swaying and lateral displacement of the front and rear blades within the blade slots, thereby regulating the blade movement posture and ensuring that the blades smoothly complete the displacement action following the cylinder body, thus improving stability.

Description

Technical Field

[0001] This invention belongs to the field of blade lock technology, and more specifically, relates to a mechanical device for improving the stability of the cylinder extension and retraction of modular blade locks. Background Technology

[0002] Leaf locks are a widely used type of mechanical lock. They rely on the precise matching of multiple leaf components inside the lock cylinder with the key teeth to open and close the lock. They are characterized by their compact structure, strong adaptability, excellent anti-theft performance, and convenient operation. They can be adapted to various installation and usage scenarios and are a common type of lock in civilian and general security fields.

[0003] A search of Chinese patent publication number "CN110185322A" reveals a "leaf lock". The inner side of the leaf of this leaf lock has a step that matches the key. The leaf groove cooperates with the protrusion on the lock shell to achieve unlocking and locking. It has the advantages of both tubular locks and pin tumbler locks, and has the advantages of small size, large number of passwords, and easy manufacturing and management. It has the key insertion and removal feel of tubular locks, and also has the flat key feature of leaf locks.

[0004] Based on the above search and existing technology findings, the aforementioned patent has certain defects: the blade lock only optimizes the basic mating structure of the blade, key, and lock shell, focusing on improving the key insertion and removal feel, reducing the lock body volume, and increasing the number of passwords. It does not address the issues of jamming and shaking caused by machining errors, assembly gaps, and wear gaps from long-term use. Consequently, when the gap between subsequent blades increases, these gaps cause the front and rear blades to lose stable constraint within the blade groove, making them prone to shaking and affecting the smoothness of unlocking. Summary of the Invention

[0005] To address the aforementioned technical problems, this invention provides a mechanical device for improving the stability of the lock cylinder extension and retraction of a modular blade lock.

[0006] A mechanical device for improving the stability of the cylinder extension and retraction of a modular blade lock includes a modular blade lock body. A cylinder body is assembled inside the modular blade lock body. Several blade slots are opened in the cylinder body. A slot spacer rib is integrally formed between adjacent blade slots. A front blade and a rear blade are assembled at each of the slot spacer rib positions.

[0007] Preferably, the blade groove is provided with a first rolling structure, the first rolling structure includes a first placement side groove, each group of the first placement side grooves is symmetrically opened on the inner wall of the blade groove, a first inner frame is placed inside the first placement side groove, a first spring group is fixedly connected to the side wall of the first inner frame, the first spring group is housed inside the first placement side groove, and one end of the first spring group is fixedly connected to the groove wall of the first placement side groove, multiple first fixing rods are fixedly provided on the inner side of the first inner frame, a first bearing is fitted on the outer side of the first fixing rod, the inner ring of the first bearing is fastened to the first fixing rod, a first rotating wheel is fixedly installed on the outer ring of the first bearing, and the outer wall of the first rotating wheel is in contact with the surface of the front blade and the rear blade.

[0008] Preferably, the front and rear blades are provided with a second rolling structure, the second rolling structure including a second placement side groove, each group of the second placement side grooves being opened inside the front blade, a second inner frame being placed inside the second placement side groove, a second spring group being fixedly connected to the side wall of the second inner frame, the second spring group being placed inside the second placement side groove, one end of which is fixedly connected to the groove wall of the second placement side groove, multiple second fixing rods being fixedly installed inside the second inner frame, a second bearing being assembled on the outside of the second fixing rods, the inner ring of the second bearing being fixedly connected to the second fixing rod, and a second rotating wheel being fixedly installed on the outer ring of the second bearing, the second rotating wheel provided on the front blade cooperating and fitting with the rear blade.

[0009] Preferably, the front blade has a concave groove symmetrically formed on one end face near the rear blade, and the rear blade has a convex slider symmetrically fixed on its side wall, the convex slider being slidably embedded in the concave groove.

[0010] Compared with the prior art, the present invention has the following beneficial effects:

[0011] In this invention, by setting a first rolling structure, when the lock cylinder body drives the front and rear blades to move in the blade groove, the first bearing can drive the first rotating wheel to rotate freely, converting the sliding friction between the blade and the inner wall of the blade groove into rolling friction, thereby reducing the motion resistance generated during the blade movement, reducing the frictional loss between the contacting parts, and thus effectively reducing the wear of the parts and the jamming problem.

[0012] In this invention, a first spring assembly located inside the first placement side groove elastically pushes the first inner frame and the first rotating wheel to continuously adhere to the outer walls of the front and rear blades. The elastic extension and contraction of the first spring assembly automatically compensates for machining errors, assembly gaps, and mating gaps formed over long-term use, maintaining a tight fit between the first rotating wheel and the blades. At the same time, it provides lateral support for the moving blades, limiting radial swaying and lateral displacement of the front and rear blades within the blade groove. This regulates the movement posture of the blades, ensuring that the blades smoothly complete the shifting action following the lock cylinder body, thus improving stability.

[0013] In this invention, by setting a second rolling structure, when the front blade and the rear blade are squeezed by the key and slide relative to each other, the second bearing drives the second rotating wheel to rotate flexibly, which transforms the planar sliding friction of the contact surface of the front and rear blades into rolling friction, weakens the motion resistance between the blades, avoids the two blades from rubbing against each other for a long time and causing surface scratches, and eliminates the situation of jamming during the extension and retraction of the lock cylinder, thereby ensuring that the lock opening and closing operation is smooth and unobstructed.

[0014] In this invention, the second spring assembly inside the second placement side groove elastically pushes the second inner frame outward, so that the second rotating wheel continuously adheres to the surface of the rear blade. This can adapt to the slight tilt angle and positional deviation that occurs during the movement of the front and rear blades, quickly resolve the problem of poor fit between the front and rear blades and mutual squeezing causing motion interference, and make the relative adjustment between the front and rear blades smoother.

[0015] In this invention, a sliding limiting structure is formed by the concave groove of the front blade and the convex slider fixedly installed on the rear blade. When the front and rear blades move relative to each other, the convex slider can only slide in a directional straight line along the concave groove, which constrains the movement trajectory and deflection angle of the two blades and avoids adverse movement states such as lateral misalignment, vertical tilting, and angular deviation. At the same time, it works in conjunction with the first rolling structure and the second rolling structure to reduce the overall movement friction and regulate the overall running posture, thereby making the reciprocating extension and retraction of the lock cylinder body more uniform and stable, and significantly improving the consistency of the lock cylinder extension and retraction operation and the overall working stability. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural schematic diagram of the present invention; Figure 2 This is a cross-sectional view of the modular blade lock body of the present invention; Figure 3 This is a cross-sectional view of the lock cylinder body of the present invention; Figure 4 This is a schematic diagram of the lock cylinder body assembly structure of the present invention; Figure 5 This is a schematic diagram of the first inner frame assembly structure of the present invention; Figure 6 This is a three-dimensional structural diagram of the lock cylinder body of the present invention; Figure 7 This is a schematic diagram of the blade assembly structure of the present invention; Figure 8 This is a schematic diagram of the second inner frame assembly structure of the present invention.

[0017] In the figure, the correspondence between the component names and the attached drawing numbers is as follows: 11. Modular blade lock body; 12. Lock cylinder body; 13. Blade groove; 14. Groove spacer rib; 15. First storage side groove; 16. First inner frame; 17. First spring assembly; 18. First fixing rod; 19. First bearing; 21. First rotating wheel; 22. Front blade; 23. Rear blade; 24. Second storage side groove; 25. Second inner frame; 26. Second spring assembly; 27. Second fixing rod; 28. Second bearing; 29. ​​Second rotating wheel; 31. Concave sliding groove; 32. Convex sliding block. Detailed Implementation

[0018] The embodiments of the present invention will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of the invention.

[0019] Please see Figure 1 - Figure 8 The present invention provides a mechanical device for improving the stability of the cylinder extension and retraction of a modular blade lock, including a modular blade lock body 11, a lock cylinder body 12 is assembled inside the modular blade lock body 11, a plurality of blade grooves 13 are opened inside the lock cylinder body 12, and a groove spacing rib 14 is integrally formed between adjacent blade grooves 13. A front blade 22 and a rear blade 23 are assembled at each groove spacing rib 14 position.

[0020] The blade groove 13 is provided with a first rolling structure, which includes a first placement side groove 15. Each group of first placement side grooves 15 is symmetrically opened on the inner wall of the blade groove 13. A first inner frame 16 is placed inside the first placement side groove 15. A first spring group 17 is fixedly connected to the side wall of the first inner frame 16. The first spring group 17 is housed inside the first placement side groove 15, and one end of the first spring group 17 is fixedly connected to the groove wall of the first placement side groove 15. Multiple first fixing rods 18 are fixedly provided on the inner side of the first inner frame 16. A first bearing 19 is fitted on the outer side of the first fixing rod 18. The inner ring of the first bearing 19 is fastened to the first fixing rod 18. A first rotating wheel 21 is fixedly installed on the outer ring of the first bearing 19. The outer wall of the first rotating wheel 21 is in contact with the surface of the front blade 22 and the rear blade 23.

[0021] By setting the first rolling structure, when the lock cylinder body 12 drives the front blade 22 and the rear blade 23 to move in the blade groove 13, the first bearing 19 can drive the first rotating wheel 21 to rotate freely, converting the sliding friction between the blade and the inner wall of the blade groove 13 into rolling friction, thereby reducing the motion resistance generated during the blade movement, reducing the frictional loss between each contacting component, and thus effectively reducing the wear of parts and reducing jamming problems.

[0022] The first spring assembly 17, located inside the first storage side groove 15, elastically pushes the first inner frame 16 and the first rotating wheel 21 to continuously adhere to the outer walls of the front blade 22 and the rear blade 23. Relying on the elastic extension and contraction of the first spring assembly 17, it automatically compensates for the machining errors of the parts, the assembly gaps, and the fitting gaps formed by long-term use, maintaining the first rotating wheel 21 and the blade in a state of tight contact at all times. At the same time, it provides lateral support for the moving blade, limiting the radial swing and left and right deviation of the front blade 22 and the rear blade 23 inside the blade groove 13, thereby regulating the movement posture of the blade and ensuring that the blade smoothly completes the displacement action following the lock cylinder body 12, thus improving stability.

[0023] The front blade 22 and the rear blade 23 are provided with a second rolling structure. The second rolling structure includes a second placement side groove 24. Each set of second placement side grooves 24 is opened inside the front blade 22. A second inner frame 25 is placed inside the second placement side groove 24. A second spring group 26 is fixedly connected to the side wall of the second inner frame 25. The second spring group 26 is placed inside the second placement side groove 24, and one end of it is fixedly connected to the groove wall of the second placement side groove 24. Multiple second fixing rods 27 are fixedly installed inside the second inner frame 25. A second bearing 28 is assembled on the outside of the second fixing rod 27. The inner ring of the second bearing 28 is fixedly connected to the second fixing rod 27. A second rotating wheel 29 is fixedly installed on the outer ring of the second bearing 28. The second rotating wheel 29 provided on the front blade 22 and the rear blade 23 cooperate and fit together.

[0024] By setting a second rolling structure, when the front blade 22 and the rear blade 23 slide relative to each other due to the pressure of the key, the second bearing 28 drives the second rotating wheel 29 to rotate flexibly, which transforms the planar sliding friction of the contact surfaces of the front blade 22 and the rear blade 23 into rolling friction, weakens the motion resistance between the blades, avoids the two blades from rubbing against each other for a long time and causing surface scratches, and eliminates the situation of jamming during the extension and retraction of the lock cylinder, thereby ensuring that the lock opening and closing operation is smooth and unobstructed.

[0025] The second spring assembly 26 inside the second storage side groove 24 elastically pushes the second inner frame 25 outward, so that the second rotating wheel 29 continuously adheres to the surface of the rear blade 23. This can adapt to the slight tilt angle and position deviation that occurs during the movement of the front blade 22 and the rear blade 23, and quickly resolve the problem of poor fit between the front blade 22 and the rear blade 23 and mutual squeezing that causes movement interference, making the relative adjustment between the front blade 22 and the rear blade 23 smoother.

[0026] The front blade 22 has a concave groove 31 symmetrically opened on one end face near the rear blade 23, and the rear blade 23 has a convex slider 32 symmetrically fixed on the side wall, and the convex slider 32 is slidably embedded in the concave groove 31.

[0027] The concave groove 31 of the front blade 22 and the convex slider 32 fixedly installed on the rear blade 23 form a sliding limiting structure. When the front blade 22 and the rear blade 23 move relative to each other, the convex slider 32 can only slide in a directional straight line along the concave groove 31, which constrains the movement trajectory and deflection angle of the two blades and avoids adverse movement states such as lateral misalignment, vertical tilting, and angular deviation. At the same time, it works in conjunction with the first rolling structure and the second rolling structure to reduce the overall movement friction and regulate the overall running posture, so that the reciprocating extension and retraction of the lock cylinder body 12 is more uniform and stable, which significantly improves the consistency of the lock cylinder extension and retraction operation and the overall working stability.

[0028] Working principle: In the first step, when the key is inserted into the lock cylinder body 12, the front blade 22 and the rear blade 23 move together with the lock cylinder within the blade groove 13. The outer wall of the blade continues to contact the first rotating wheel 21 on the inner wall of the blade groove 13. The first rotating wheel 21 is movably sleeved on the outside of the first fixed rod 18 via the first bearing 19. The inner ring of the first bearing 19 is fixed to the surface of the first fixed rod 18, and the outer ring can drive the first rotating wheel 21 to rotate freely. This converts the original hard sliding friction between the blade and the inner wall of the blade groove 13 into rolling friction of the first rotating wheel 21, greatly reducing the motion resistance encountered by the blade during movement and reducing wear on the contact surfaces of the parts. 15 is symmetrically opened on the inner wall of the blade groove 13. The first inner frame 16 is placed inside the first storage side groove 15. One end of the first spring group 17 is fixed to the groove wall of the first storage side groove 15, and the other end is fixedly connected to the first inner frame 16. Relying on the elastic extension and contraction performance of the first spring group 17, it can continuously push the first inner frame 16 together with the first rotating wheel 21 towards the blade direction to press tightly against it. It can automatically compensate for the processing error of the parts, the assembly gap, and the fitting gap generated by long-term use, so that the first rotating wheel 21 always presses tightly against the outer wall of the blade and does not come off. It effectively restricts the radial swing and left and right deviation of the blade inside the blade groove 13, constrains the movement posture of the blade, and ensures that the blade follows the lock cylinder smoothly. In the second step, during the lock opening and closing operation, in addition to moving with the lock cylinder as a whole, the front blade 22 and the rear blade 23 also experience slight relative slippage and minor position adjustments due to the pressure of the key. The inner contact surfaces of the two blades that are in contact with each other are prone to generating significant friction, hindering the normal extension and retraction of the lock cylinder. The second inner frame 25 is built into the second storage side groove 24 inside the front blade 22. The second inner frame 25 is elastically connected to the groove wall of the second storage side groove 24 through the second spring assembly 26. The second fixed rod 27 fixed inside the second inner frame 25 is movably mounted on the outside of the second rotating wheel 29 with the help of the second bearing 28. The outer wall of the second rotating wheel 29 is in contact with the inner surface of the rear blade 23. When the blade 23 undergoes relative displacement, the second rotating wheel 29 rotates flexibly with the help of the second bearing 28, transforming the planar sliding friction between the two blades into rolling friction, further reducing the motion resistance between the blades and preventing scratches, jamming, and other faults caused by long-term mutual friction between the blades. The second spring assembly 26 continuously pushes the second inner frame 25 outward elastically, keeping the second rotating wheel 29 in close contact with the rear blade 23. It can adapt to the slight tilt angle and positional deviation generated during the movement of the two blades, and promptly eliminate problems such as poor contact between the front and rear blades 23 and mutual squeezing interference, making the relative movement between the front blade 22 and the rear blade 23 smoother. Third, a concave groove 31 is symmetrically machined on the end face of the front blade 22 near the rear blade 23. A convex slider 32 is fixedly assembled on the corresponding side wall of the rear blade 23. When the lock cylinder extends and retracts, causing the front blade 22 and the rear blade 23 to move relative to each other, the convex slider 32 can only slide back and forth in a directional straight line along the preset channel of the concave groove 31. Relying on the interlocking and limiting structure of the groove and the slider, the structure prevents adverse working conditions such as lateral misalignment, vertical tilting, angular deflection, and offset misalignment when the two blades move. At the same time, it complements the upper and lower rolling structures, which reduces the frictional resistance of the entire movement through the rolling structure and regulates the overall movement trajectory by relying on the groove and slider structure, ensuring that the extension and retraction of the lock cylinder body 12 is uniform and stable, and improving the consistency and working stability of the lock cylinder extension and retraction operation.

[0029] The embodiments of the present invention are given for illustrative and descriptive purposes only, and are not intended to be exhaustive or to limit the invention to the forms disclosed. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described to better illustrate the principles and practical application of the invention, and to enable those skilled in the art to understand the invention and design various embodiments with various modifications suitable for a particular purpose.

Claims

1. A mechanical device for improving the stability of the cylinder extension and retraction of a modular blade lock, comprising a modular blade lock body (11), wherein a cylinder body (12) is assembled inside the modular blade lock body (11), and a plurality of blade grooves (13) are provided inside the cylinder body (12), and a groove spacing rib (14) is integrally formed between adjacent blade grooves (13), and a front blade (22) and a rear blade (23) are assembled at each of the groove spacing ribs (14), characterized in that: The blade groove (13) is provided with a first rolling structure; The front blade (22) and the rear blade (23) are provided with a second rolling structure; The first rolling structure includes a first placement side groove (15), and each group of the first placement side grooves (15) is symmetrically opened on the inner wall of the blade groove (13).

2. The mechanical device for improving the stability of the lock cylinder extension and retraction of the modular blade lock as described in claim 1, characterized in that, The first inner frame (16) is placed inside the first storage side groove (15), and the first spring group (17) is fixedly connected to the side wall of the first inner frame (16).

3. The mechanical device for improving the stability of the lock cylinder extension and retraction of the modular blade lock as described in claim 2, characterized in that, The first spring assembly (17) is housed inside the first storage side groove (15), and one end of the first spring assembly (17) is fixedly connected to the groove wall of the first storage side groove (15). Multiple first fixing rods (18) are fixedly provided on the inner side of the first inner frame (16).

4. The mechanical device for improving the stability of the lock cylinder extension and retraction of the modular blade lock as described in claim 3, characterized in that, The first bearing (19) is fitted on the outer side of the first fixed rod (18). The inner ring of the first bearing (19) is fastened to the first fixed rod (18). The outer ring of the first bearing (19) is fixedly mounted with the first rotating wheel (21). The outer wall of the first rotating wheel (21) is in contact with the surface of the front blade (22) and the rear blade (23).

5. The mechanical device for improving the stability of the lock cylinder extension and retraction of the modular blade lock as described in any one of claims 1-4, characterized in that, The second rolling structure includes a second storage side groove (24), and each set of the second storage side groove (24) is opened inside the front blade (22).

6. The mechanical device for improving the stability of the lock cylinder extension and retraction of the modular blade lock as described in claim 5, characterized in that, A second inner frame (25) is installed in the second storage side groove (24), and a second spring assembly (26) is fixedly connected to the side wall of the second inner frame (25).

7. The mechanical device for improving the stability of the lock cylinder extension and retraction of the modular blade lock as described in claim 6, characterized in that, The second spring assembly (26) is placed inside the second storage side groove (24), and one end of it is fixedly connected to the groove wall of the second storage side groove (24).

8. The mechanical device for improving the stability of the lock cylinder extension and retraction of the modular blade lock as described in claim 7, characterized in that, Multiple second fixing rods (27) are fixedly installed inside the second inner frame (25), and second bearings (28) are assembled on the outside of the second fixing rods (27).

9. The mechanical device for improving the stability of the lock cylinder extension and retraction of the modular blade lock as described in claim 8, characterized in that, The inner ring of the second bearing (28) is fixedly connected to the second fixed rod (27), and the outer ring of the second bearing (28) is fixedly installed with the second rotating wheel (29). The second rotating wheel (29) provided on the front blade (22) and the rear blade (23) cooperate and fit together.

10. The mechanical device for improving the stability of the lock cylinder extension and retraction of the modular blade lock as described in claim 1, characterized in that, The front blade (22) has a concave groove (31) symmetrically opened on one end face near the rear blade (23), and the rear blade (23) has a convex slider (32) symmetrically fixed on the side wall, and the convex slider (32) is slidably embedded in the concave groove (31).

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