An auxiliary return lock cylinder
Patent Information
- Application Number
- CN202522235620.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-10-22
- Publication Date
- 2026-10-09
- Estimated Expiration
- 2035-10-22
AI Technical Summary
[0005]有鉴于此，本实用新型提供一种辅助回位锁芯，拟解决现有装置在转动过程中由于摩擦阻力的影响，可能出现未能旋转到位的情况，造成锁芯卡滞甚至功能失效的技术问题
[0026]1.本实用新型提供的一种辅助回位锁芯，通过限位组件将原本的滑动摩擦转化为滚动摩擦，从而显著减小锁芯与锁芯套之间的摩擦力，使得转动更加顺滑，更加省力，有效防止因锁芯与锁套之间摩擦力较大造成的锁芯转动卡滞现象，而摩擦力降低也有利于提高锁芯的使用寿命、提高可靠性。
Smart Images
Figure CN224834647U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of lock technology, specifically relating to an auxiliary return lock cylinder. Background Technology
[0002] Currently, the opening of commonly used locks mainly relies on the precise cooperation between the key and the internal mechanical structure of the lock cylinder. Locks are divided into mechanical locks, electronic locks, biometric locks, etc. Among them, mechanical locks are more common in daily life. Mechanical locks include pin tumbler locks, padlocks, and wafer locks, etc. In the field of motorcycles and electric vehicles, wafer locks are commonly used locks, which have good anti-theft performance.
[0003] A wafer lock typically consists of a lock cylinder, wafers, a lock body, and a key. The principle of a wafer lock cylinder is mainly based on the rotational movement of the wafers. When the correct key is inserted into the lock cylinder, the groove on the key matches the protrusion on the wafer, allowing the wafer to rotate smoothly. During the rotation of the wafer, the cylinder inside the lock cylinder also rotates, thus realizing the opening and closing function of the lock cylinder. However, using the wrong key will prevent the wafer from rotating, and therefore the lock cylinder cannot be opened.
[0004] However, due to frictional resistance, the cylinder of existing leaf locks may fail to rotate to the correct position during rotation, causing the cylinder to jam or even malfunction. Utility Model Content
[0005] In view of this, the present invention provides an auxiliary return lock cylinder, which aims to solve the technical problem that existing devices may fail to rotate to the correct position due to frictional resistance during rotation, resulting in lock cylinder jamming or even functional failure.
[0006] To solve the aforementioned technical problems, the present invention adopts the following technical solution: An auxiliary return lock cylinder includes a lock cylinder, a lock cylinder sleeve, and a limiting assembly. The lock cylinder is fitted inside the lock cylinder sleeve. The inner wall of the lock cylinder sleeve is provided with a guide and limiting part along the circumference. The guide and limiting part is formed by multiple curves with different curvatures. The lock cylinder is provided with the limiting component. The limiting component is in rolling contact with the guide and limiting part. During the rotation of the lock cylinder, the guide and limiting part can cooperate with the limiting component to guide the rotation of the lock cylinder and limit its position.
[0007] In this invention, on the one hand, by converting the original sliding friction into rolling friction, the friction between the lock cylinder and the lock cylinder sleeve is significantly reduced, making rotation smoother and less strenuous. This effectively prevents the lock cylinder from jamming due to excessive friction between the lock cylinder and the lock cylinder sleeve. The reduced friction also helps to improve the service life and reliability of the lock cylinder. On the other hand, by setting a guide limiting part, when the lock cylinder rotates to a certain extent, the rotation of the lock cylinder is limited by the cooperation of the guide limiting part and the limiting component. In addition, the guide limiting part not only cooperates with the limiting component to limit the rotation of the lock cylinder, but also guides the rotation of the lock cylinder during the rotation process. After rotating to a certain position, the guide limiting part can automatically guide the limiting component to move to another part for limiting, making it easier to use and providing a better unlocking feel.
[0008] Preferably, the guide and limiting portion includes a guide portion and a limiting portion, the guide portion and the limiting portion are smoothly connected end to end and form a ring, and the curvature of the guide portion is less than the curvature of the limiting portion.
[0009] After adopting this technical solution, it should be noted that the function of the limiting part is to cooperate with the limiting component to limit the lock cylinder rotation. During the continuous rotation of the lock cylinder, the limiting component first disengages from the limiting part and enters the guide part. As the lock cylinder continues to rotate, when the limiting component rotates to the transition point between the guide part and the next limiting part, the limiting component moves directly to cooperate with the next limiting part under the action of the transition point, so as to automatically rotate to the required position after rotating to a certain position, thereby improving the user experience. Furthermore, it should be noted that the curvature of the guide part is less than that of the limiting part. On the one hand, the greater curvature of the limiting part forms a groove that cooperates with the limiting component, so as to restrict the rotation of the lock cylinder by cooperating with the limiting component; on the other hand, the smaller curvature of the guide part is conducive to the smooth transition between the limiting part and the guide part, thereby facilitating the movement of the limiting component.
[0010] Preferably, the guide portion and the limiting portion are each provided with four segments, which limit the limiting component four times.
[0011] After adopting this technical solution, it should be noted that the number of segments of the guiding part and the limiting part can be set according to actual needs. This application sets four segments, which are set 90° apart from each other.
[0012] Preferably, the limiting component includes an elastic element and a limiting ball, one end of the elastic element is connected to the limiting ball, and the other end of the elastic element is connected to the lock cylinder, and the limiting ball can cooperate with the limiting part to limit the movement.
[0013] After adopting this technical solution, it should be noted that the limiting ball is made of steel. The limiting ball rolls in contact with the limiting part and the guide part, generating rolling friction to reduce the friction caused by sliding friction. Taking the limiting ball as a reference when it is located in a limiting part, the limiting ball abuts against the limiting part under the action of the elastic element to achieve limiting. During the rotation, the limiting ball and the elastic element are squeezed and contracted by the limiting part. The rotation continues until the limiting ball is separated from the limiting part. At this time, the limiting ball and the elastic element are still in a compressed state under the compression of the guide part. When rotating to the transition point between the guide part and the next limiting part, due to the increase in curvature, the limiting ball is ejected outward under the elastic force of the elastic element until the limiting ball re-fits with the next limiting part for limiting. The above process is repeated when the lock cylinder is rotated to the next limiting part.
[0014] Preferably, the lock cylinder has a blind hole, the elastic element is disposed in the blind hole, and the limiting ball extends outward to the outside of the blind hole.
[0015] After adopting this technical solution, it should be noted that the blind hole provides support for the elastic element, so that the spring will not be sheared when the lock cylinder rotates, which helps to improve the service life.
[0016] Preferably, the curvature of the limiting ball is consistent with the curvature of the limiting part.
[0017] After adopting this technical solution, it should be noted that having the same curvature between the limiting ball and the limiting part can result in a larger contact area between the limiting ball and the limiting part, providing more stable limiting.
[0018] Preferably, the lock cylinder is provided with a positioning ring, and one end of the guide limiting part is provided with a platform, the platform and the positioning ring cooperate to position the lock cylinder.
[0019] Furthermore, the lock cylinder has an axial lock hole and a plurality of blade holes in the radial direction. Blades are inserted into the blade holes, and the blades have protrusions that can match the key teeth. A V-groove is formed at the upper end of the blade.
[0020] After adopting this technical solution, it should be noted that the key is inserted from the keyhole and cooperates with the blade, so that the key teeth cooperate with the protrusions on the blade. The V-groove is used to cooperate with the key guide groove, so that the angle of the blade can be precisely adjusted. In addition, it should be noted that the protrusions and V-groove of the blade are existing technologies.
[0021] Furthermore, a spring insertion hole is provided at the lower end of the blade hole, a support seat is provided at the lower end of the blade, and a spring is provided between the support seat and the spring insertion hole.
[0022] After adopting this technical solution, it should be noted that the function of the spring is to prevent the blade from rotating freely when subjected to vibration or impact, thereby preventing the key from being inserted. This is existing technology and will not be elaborated further.
[0023] Preferably, the inner wall of the lock cylinder sleeve is provided with a plurality of support platforms along the circumference, and the surface of the support platform is an arc shape that fits the lock cylinder.
[0024] After adopting this technical solution, it should be noted that the support platform serves to support and center the lock cylinder.
[0025] In summary, due to the adoption of the above technical solution, the beneficial effects of this utility model are:
[0026] 1. The auxiliary return lock cylinder provided by this utility model transforms the original sliding friction into rolling friction through the limiting component, thereby significantly reducing the friction between the lock cylinder and the lock cylinder sleeve, making the rotation smoother and more effortless, effectively preventing the lock cylinder from jamming due to the large friction between the lock cylinder and the lock sleeve, and the reduction of friction also helps to improve the service life and reliability of the lock cylinder.
[0027] 2. The auxiliary return lock cylinder provided by this utility model, by setting a guide limiting part, when the lock cylinder rotates to a certain extent, the rotation of the lock cylinder is limited by the cooperation of the guide limiting part and the limiting component. In addition, the guide limiting part can not only cooperate with the limiting component to limit the rotation of the lock cylinder, but also guide the rotation of the lock cylinder during the rotation process. After rotating to a certain position, the limiting component can be automatically guided to move to another part for limiting under the action of the guide limiting part, making it easier to use and providing a better unlocking feel.
[0028] 3. The auxiliary return lock cylinder provided by this utility model has a curvature of less than that of lesser limiter. On the one hand, the curvature of lesser limiter forms a groove that cooperates with lesser limiter, so as to restrict the rotation of lock cylinder by cooperating with lesser limiter. On the other hand, the curvature of lesser limiter facilitates a smooth transition between lesser limiter and limiter, thereby facilitating the movement of lesser limiter.
[0029] 4. The auxiliary return lock cylinder provided by this utility model, by having the limit ball and the limit part have the same curvature, can make the contact area between the limit ball and the limit part larger, and provide more stable limiting. Attached Figure Description
[0030] This utility model will be described by way of example and with reference to the accompanying drawings, wherein: Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is an exploded view of the structure of this utility model; Figure 3 This utility model Figure 1 Sectional view along the AA direction; Figure 4 This is a schematic diagram of the lock cylinder sleeve structure of this utility model; Figure 5 This utility model Figure 1 Sectional view along the BB direction.
[0031] Figure label: 1-Lock cylinder, 2-Lock cylinder sleeve, 3-Lock hole, 4-Leaf hole, 401-Spring insertion hole, 5-Limit hole, 6-Limit assembly, 601-Elastic element, 602-Limit ball, 7-Leaf, 701-Protrusion, 702-Support base, 703-V groove, 8-Support platform, 9-Guide limit part, 901-Limit part, 902-Guide part, 10-Through hole, 11-Platform, 12-Positioning ring. Detailed Implementation
[0032] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions in the embodiments of this application will be clearly and completely described below in conjunction with the embodiments and accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. The components of the embodiments of this application described and marked in the accompanying drawings can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely represents selected embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.
[0033] In the description of the embodiments of this application, it should be noted that the terms "upper," "lower," "left," "right," "vertical," "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 utility product is in use. They are only for the convenience of describing this application 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 application. In addition, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.
[0034] The following is combined Figures 1-5 This utility model will be described in detail. Example 1
[0035] An auxiliary return lock cylinder, such as Figures 1-5 As shown, it includes a lock cylinder 1, a lock cylinder sleeve 2, and a limiting assembly 6. The lock cylinder 1 is fitted inside the lock cylinder sleeve 2. The inner wall of the lock cylinder sleeve 2 is provided with a guide and limiting part 9 along its circumference. The guide and limiting part 9 is formed by multiple curves with different curvatures. The lock cylinder 1 is provided with a limiting component 6. The limiting component 6 and the guide and limiting part 9 are in rolling contact. During the rotation of the lock cylinder 1, the guide and limiting part 9 can cooperate with the limiting component 6 to guide and limit the rotation of the lock cylinder 1. This significantly reduces the friction between the lock cylinder 1 and the lock cylinder sleeve 2 by converting the original sliding friction into rolling friction, making the rotation smoother and less strenuous, and effectively preventing damage caused by excessive friction between the lock cylinder 1 and the lock cylinder sleeve 2. The reduced friction also helps to improve the service life and reliability of the lock cylinder 1. On the other hand, by setting the guide limiting part 9, when the lock cylinder 1 rotates to a certain extent, the guide limiting part 9 and the limiting component 6 work together to limit the rotation of the lock cylinder 1. In addition, the guide limiting part 9 can not only cooperate with the limiting component 6 to limit the rotation of the lock cylinder 1, but also guide the rotation of the lock cylinder 1 during the rotation process. After rotating to a certain position, the guide limiting part 9 can automatically guide the limiting component 6 to move to another position for limiting, making it easier to use and providing a better unlocking feel.
[0036] The guide limiting part 9 includes a guide part 902 and a limiting part 901. The guide part 902 and the limiting part 901 are smoothly connected end to end and form a ring. The curvature of the guide part 902 is less than the curvature of the limiting part 901. The function of the limiting part 901 is to cooperate with the limiting component 6 to limit the rotation of the lock cylinder 1. During the continuous rotation of the lock cylinder 1, the limiting component 6 first disengages from the limiting part 901 and enters the guide part 902. As the lock cylinder 1 continues to rotate, when the limiting component 6 rotates to the transition point between the guide part 902 and the next limiting part 901, the lock cylinder 1 rotates to the transition point. Under the action of the part, the limiting component 6 moves directly to cooperate with the next limiting part 901, so that after rotating to a certain position, it automatically rotates to the required position, thereby improving the user feel. In addition, the curvature of the guide part 902 is less than the curvature of the limiting part 901. On the one hand, the curvature of the limiting part 901 is greater, forming a groove that cooperates with the limiting component 6, so as to restrict the rotation of the lock cylinder 1 by cooperating with the limiting component 6; on the other hand, the curvature of the guide part 902 is less than the curvature of the limiting part 901, which is conducive to the smooth transition of the connection between the limiting part 901 and the guide part 902, thereby facilitating the movement of the limiting component 6.
[0037] The guide part 902 and the limiting part 901 are each provided with four segments, which limit the limiting component 6 four times.
[0038] The lock cylinder 1 is provided with a positioning ring 12, and one end of the guide limiting part 9 is provided with a platform 11. The platform 11 and the positioning ring 12 cooperate to position the lock cylinder 1.
[0039] The lock cylinder 1 has an axial lock hole 3 and a plurality of blade holes 4 in the radial direction. A blade 7 is inserted into the blade hole 4. The blade 7 has a protrusion 701 that matches the key teeth. The upper end of the blade 7 has a V-groove 703. The key is inserted from the lock hole 3 and engages with the blade 7, so that the key teeth engage with the protrusion 701 on the blade 7. The function of the V-groove 703 is to engage with the guide groove of the key, thereby enabling precise adjustment of the angle of the blade 7. It should be noted that the protrusion 701 and the V-groove 703 of the blade 7 are existing technologies.
[0040] The blade hole 4 has a spring insertion hole 401 at its lower end, and the blade 7 has a support base 702 at its lower end. A spring is provided between the support base 702 and the spring insertion hole 401. The function of the spring is to prevent the blade 7 from rotating freely when subjected to vibration or impact, thereby preventing the key from being inserted. This is existing technology and will not be described in detail here.
[0041] The inner wall of the lock cylinder sleeve 2 is provided with a plurality of support platforms 8 along the circumference. The surface of the support platform 8 is an arc shape that fits the lock cylinder 1. The support platform 8 plays the role of supporting and centering the lock cylinder 1. The support platform 8 is located on one side of the guide limiting part 9. Example 2
[0042] The difference between this embodiment and Embodiment 1 is that, as Figure 2 , Figure 3 As shown, the limiting component 6 includes an elastic element 601 and a limiting ball 602. One end of the elastic element 601 is connected to the limiting ball 602, and the other end of the elastic element 601 is connected to the lock cylinder 1. The limiting ball 602 can cooperate with the limiting part 901 to limit the movement.
[0043] The lock cylinder 1 is provided with a blind hole, the elastic element 601 is disposed in the blind hole, and the limiting ball 602 extends outward to the outside of the blind hole. The blind hole provides support for the elastic element 601, so that the spring will not be sheared when the lock cylinder 1 rotates, which helps to improve the service life.
[0044] In this embodiment, the limiting ball 602 is made of steel. The limiting ball 602 rolls with the limiting part 901 and the guide part 902, generating rolling friction to reduce the friction caused by sliding friction. Taking the limiting ball 602 as a reference when it is located in a limiting part 901, the limiting ball 602 abuts against the limiting part 901 under the action of the elastic member 601 to achieve limiting. During the rotation, the limiting ball 602 and the elastic member 601 are squeezed and contracted by the limiting part 901. The rotation continues until the limiting ball 602 is separated from the limiting part 901. At this time, the limiting ball 602 and the elastic member 601 are still in a compressed state under the compression of the guide part 902. When rotating to the transition point between the guide part 902 and the next limiting part 901, due to the increase in curvature, the limiting ball 602 is ejected outward under the elastic force of the elastic member 601 until the limiting ball 602 re-fits with the next limiting part 901 for limiting. The above process is repeated when rotating the lock cylinder 1 to the next limiting part 901. Example 3
[0045] The difference between this embodiment and Embodiment 2 is that, as Figure 5 As shown, the curvature of the limiting ball 602 is the same as the curvature of the limiting part 901. The fact that the curvatures of the limiting ball 602 and the limiting part 901 are the same can make the contact area between the limiting ball 602 and the limiting part 901 larger, thus providing a more stable limiting.
[0046] The working principle of this utility model: When the key is inserted and turned, causing the lock cylinder to rotate, the lock cylinder drives the limiting component to rotate. With the limiting ball 602 positioned at a limiting part 901 as a reference, the limiting ball 602 abuts against the limiting part 901 under the action of the elastic element 601 to achieve limiting. During the rotation, the limiting ball 602 and the elastic element 601 are compressed and contracted by the limiting part 901. The rotation continues until the limiting ball 602 disengages from the limiting part 901. At this point, the limiting ball 602 and the elastic element 601 are still in a compressed state under the compression of the guide part 902. When rotating to the transition point between the guide part 902 and the next limiting part 901, due to the increased curvature, the limiting ball 602 is ejected outward under the elastic force of the elastic element 601 until the limiting ball 602 re-engages with the next limiting part 901 for limiting. The above process is repeated when the lock cylinder 1 is rotated to the next limiting part 901, making it easier to use and providing a better unlocking feel.
[0047] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims
1. An auxiliary return lock cylinder, characterized in that, It includes a lock cylinder (1), a lock cylinder sleeve (2), and a limiting component (6). The lock cylinder (1) is fitted inside the lock cylinder sleeve (2). The inner wall of the lock cylinder sleeve (2) is provided with a guide limiting part (9) along the circumferential direction. The guide limiting part (9) is formed by multiple curves with different curvatures. The lock cylinder (1) is provided with the limiting component (6). The limiting component (6) and the guide limiting part (9) are in rolling contact. During the rotation of the lock cylinder (1), the guide limiting part (9) can cooperate with the limiting component (6) to guide the lock cylinder (1) to rotate and limit its position.
2. The auxiliary return lock cylinder according to claim 1, characterized in that: The guide and limiting part (9) includes a guide part (902) and a limiting part (901). The guide part (902) and the limiting part (901) are smoothly connected end to end and form a ring. The curvature of the guide part (902) is less than the curvature of the limiting part (901).
3. The auxiliary return lock cylinder according to claim 2, characterized in that: The guide part (902) and the limiting part (901) are each provided with four segments, which limit the limiting component (6) four times.
4. An auxiliary return lock cylinder according to claim 2, characterized in that: The limiting component (6) includes an elastic element (601) and a limiting ball (602). One end of the elastic element (601) is connected to the limiting ball (602), and the other end of the elastic element (601) is connected to the lock cylinder (1). The limiting ball (602) can cooperate with the limiting part (901) for limiting.
5. An auxiliary return lock cylinder according to claim 4, characterized in that: The lock cylinder (1) is provided with a blind hole, the elastic element (601) is provided in the blind hole, and the limiting ball (602) extends outward to the outside of the blind hole.
6. An auxiliary return lock cylinder according to claim 4, characterized in that: The curvature of the limiting ball (602) is consistent with the curvature of the limiting part (901).
7. An auxiliary return lock cylinder according to any one of claims 1-6, characterized in that: The lock cylinder (1) is provided with a positioning ring (12), and one end of the guide limiting part (9) is provided with a platform (11). The platform (11) and the positioning ring (12) cooperate to position the lock cylinder (1).
8. An auxiliary return lock cylinder according to any one of claims 1-6, characterized in that: The lock cylinder (1) has an axial lock hole (3) and a plurality of blade holes (4) are provided radially. A blade (7) is inserted into the blade hole (4). The blade (7) has a protrusion (701) that can match the key teeth. A V-groove (703) is provided at the upper end of the blade (7).
9. An auxiliary return lock cylinder according to claim 8, characterized in that: The blade hole (4) has a spring insertion hole (401) at the lower end, and the blade (7) has a support seat (702) at the lower end. A spring is provided between the support seat (702) and the spring insertion hole (401).
10. An auxiliary return lock cylinder according to any one of claims 1-6, characterized in that: The inner wall of the lock cylinder sleeve (2) is provided with multiple support platforms (8) along the circumference, and the surface of the support platform (8) is an arc shape that fits the lock cylinder (1).