Rotating bearing of a mechanical fingerprint lock

Abstract

The utility model relates to mechanical fingerprint lock technical field, concretely is a kind of rotating bearing of mechanical fingerprint lock, including inner ring body, outer ring body, roller body and protective device, inner ring body is set to the inside of outer ring body, roller body is set between inner ring body and outer ring body, protective device is set on inner ring body;Protective device includes opening two protective covers, recess is set to the both sides of inner ring body and outer ring body, the utility model, by setting antiskid device, by mounting assembly, protective cover can be installed in the recess of inner ring body, outer ring body surface, form around type protective structure, not easy to deform, can effectively intercept dust, hair and other impurities into bearing interior, while antiskid cover cooperates rolling contact part, can limit the position of inner ring body and outer ring body, can effectively limit the relative displacement of inner ring body and outer ring body, reduce the deviation problem caused by long-term use, guarantee the concentricity of bearing rotation, and feeding port is convenient for adding lubricating oil.

Description

Technical Field

[0001] This utility model relates to the field of mechanical fingerprint lock technology, and in particular to a rotating bearing for a mechanical fingerprint lock. Background Technology

[0002] A mechanical fingerprint lock is a composite lock that integrates fingerprint recognition technology and a mechanical lock cylinder. It collects the user's fingerprint information through a fingerprint sensor, verifies the identity through chip comparison, and then drives the internal mechanical structure to unlock. At the same time, it retains the traditional keyhole as a backup unlocking method. Compared with ordinary mechanical locks, its core advantages are that no key is needed, the uniqueness of the fingerprint enhances security, and unlocking is convenient. The mechanical fingerprint lock bearing is a precision bearing used in the rotating parts inside the lock (such as the handle shaft and the lock cylinder transmission mechanism). Its main function is to support the rotating structure, reduce frictional resistance, and ensure the smoothness and stability of mechanical transmission after fingerprint verification. It is mostly a small deep groove ball bearing or sliding bearing, and its structure includes an inner ring, an outer ring, and rolling elements (or sliding bushings), which are adapted to the compact internal space of the lock.

[0003] In daily work, it has been found that in the dustproof design of existing mechanical fingerprint lock rotary bearings, a lip seal is often installed between the inner and outer rings to intercept impurities. However, since these seals are mostly made of rubber, they are easily deformed by temperature and pressure, affecting the sealing effect. They are also inconvenient to limit positioning and add lubricating oil. When the inner and outer rings are misaligned, the sealing effect will be worse. When adding lubricating oil, the seal needs to be removed, which is inconvenient. Utility Model Content

[0004] The purpose of this utility model is to solve the problems in the existing technology where a lip seal is usually installed between the inner and outer rings to intercept impurities, resulting in poor sealing effect, easy positioning and lubrication, and even worse sealing effect when the inner and outer rings are misaligned. When adding lubricant, the seal needs to be removed, which is inconvenient. Therefore, a rotating bearing for a mechanical fingerprint lock is proposed.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a rotating bearing for a mechanical fingerprint lock, comprising an inner ring body, an outer ring body, a roller body, and a protective device, wherein the inner ring body is disposed inside the outer ring body, the roller body is disposed between the inner ring body and the outer ring body, and the protective device is disposed on the inner ring body;

[0006] The protective device includes two protective covers. Grooves are formed on both sides of the inner and outer rings. The protective covers are inserted into the inner walls of the grooves. An installation assembly is provided in the groove on the surface of the inner ring for installing and positioning the protective covers. A sliding groove is formed on the surface of the protective cover, and a feed inlet is formed on the inner wall of the sliding groove. A cover plate is slidably connected to the inner wall of the sliding groove, and a sliding rod is fixedly connected to the inner wall of the sliding groove. The sliding rod is slidably connected to the inner wall of the cover plate. A rolling contact part is provided on the surface of the protective cover for contacting the inner wall of the groove on the surface of the outer ring. Through these components, the protective covers can be installed in the grooves on the surfaces of the inner and outer rings using the installation assembly. The rolling contact part of the protective cover reduces friction and provides a limiting function, reducing the possibility of misalignment between the inner and outer rings. The feed inlet facilitates quick addition of lubricating oil.

[0007] Preferably, the installation assembly includes a screw rotatably connected to the inner wall of the inner ring groove and multiple guide posts fixedly connected. One end of the screw has a control hole, and the surface of the protective cover has a screw hole and multiple guide holes. The screw is threaded to the inner wall of the screw hole, and the guide posts are inserted into the inner wall of the guide holes. With the above components, during installation, the guide hole on the surface of the protective cover can be fitted onto the guide post, and then a tool can be inserted into the control hole. Rotating the screw connects the screw to the screw hole, causing the protective cover to move and fit snugly to achieve installation.

[0008] Preferably, the length of the plurality of guide posts is longer than that of the screw, which facilitates the early insertion of the guide posts into the guide holes for guidance.

[0009] Preferably, a spring is fitted on the surface of the slide rod, and the two ends of the spring are fixedly connected to the inner wall of the cover plate and the slide groove, respectively. Through the above components, the spring can drive the cover plate to reset, thereby improving the sealing effect on the feed inlet.

[0010] Preferably, the surface of the cover plate is fixedly connected with anti-slip strips, and there are multiple anti-slip strips arranged at equal intervals. Through the above-mentioned components and the anti-slip strips, the cover plate can be moved more stably.

[0011] Preferably, the anti-slip strip is made of rubber.

[0012] Preferably, the rolling contact portion includes a plurality of balls and a plurality of rollers. The plurality of balls are disposed in the inner wall of the protective cover, and the plurality of rollers are rotatably connected to the inner wall of the protective cover. Through the above components, the balls and rollers can contact the inner wall of the groove on the surface of the outer ring body, thereby providing support and reducing friction.

[0013] Preferably, a limiting groove is formed on the inner wall of the groove on the surface of the outer ring body, and the ball contacts the inner wall of the limiting groove. Through the above-mentioned components, the limiting groove and the ball can be further limited to ensure stability.

[0014] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0015] In this invention, by setting an anti-slip device and installing components, the protective cover can be installed in the grooves on the surfaces of the inner and outer rings to form a surrounding protective structure. This structure is not easily deformed and can effectively intercept dust, hair, and other impurities from entering the bearing. At the same time, the anti-slip cover, in conjunction with the rolling contact part, can limit the movement of the inner and outer rings, effectively restricting the relative displacement between them, reducing the offset problem caused by long-term use, ensuring the concentricity of the bearing rotation, and facilitating the addition of lubricating oil at the feed port.

[0016] In this invention, the installation component is pre-positioned by the guide post and the guide hole, and then connected by the screw and the screw hole. The guide post is longer than the screw, which ensures that the protective cover is aligned by the guide structure during installation, reducing installation deviations caused by misalignment, and making the installation process of the protective cover accurate and stable.

[0017] In this invention, the rolling ball of the rolling contact part cooperates with the limiting groove in the groove of the outer ring body, and the roller contacts the inner wall of the groove to form multiple limiting supports and reduce friction. Attached Figure Description

[0018] Figure 1 A three-dimensional structural diagram of the rotating bearing of a mechanical fingerprint lock is provided for this utility model;

[0019] Figure 2 A cross-sectional structural diagram of the rotating bearing of a mechanical fingerprint lock is provided for this utility model;

[0020] Figure 3 This utility model proposes a rotating bearing for a mechanical fingerprint lock. Figure 2 Schematic diagram of the structure at point A in the middle;

[0021] Figure 4 An exploded view of the rotating bearing of a mechanical fingerprint lock is provided for this utility model.

[0022] Figure 5 This utility model proposes a rotating bearing for a mechanical fingerprint lock. Figure 4 Schematic diagram of the structure at point B.

[0023] Legend:

[0024] 1. Inner ring body; 2. Outer ring body; 3. Roller body; 4. Protective device; 41. Protective cover; 42. Slide groove; 43. Cover plate; 44. Anti-slip strip; 45. Spring; 46. Mounting assembly; 461. Screw; 462. Control hole; 463. Screw hole; 464. Guide post; 465. Guide hole; 47. Slide rod; 48. Feed port; 49. Groove; 410. Ball; 411. Roller. Detailed Implementation

[0025] Please see Figure 1 - Figure 5 This utility model provides a technical solution: a rotating bearing for a mechanical fingerprint lock, comprising an inner ring body 1, an outer ring body 2, a roller body 3, and a protective device 4. The inner ring body 1 is disposed inside the outer ring body 2, the roller body 3 is disposed between the inner ring body 1 and the outer ring body 2, and the protective device 4 is disposed on the inner ring body 1.

[0026] Specifically, the protective device 4 includes two protective covers 41. Grooves 49 are provided on both sides of the inner ring body 1 and the outer ring body 2. The protective cover 41 is inserted into the inner wall of the groove 49. An installation component 46 is provided in the groove 49 on the surface of the inner ring body 1 for installing and positioning the protective cover 41. A sliding groove 42 is provided on the surface of the protective cover 41. A feed port 48 is provided on the inner wall of the sliding groove 42. A cover plate 43 is slidably connected to the inner wall of the sliding groove 42. A sliding rod 47 is fixedly connected to the inner wall of the sliding groove 42. The sliding rod 47 is slidably connected to the inner wall of the cover plate 43. A rolling contact part is provided on the surface of the protective cover 41 for contacting the inner wall of the groove 49 on the surface of the outer ring body 2. A spring 45 is sleeved on the surface of the sliding rod 47. The two ends of the spring 45 are fixedly connected to the inner wall of the cover plate 43 and the sliding groove 42, respectively. Anti-slip strips 44 are fixedly connected to the surface of the cover plate 43. There are multiple anti-slip strips 44, which are evenly spaced and are made of rubber.

[0027] In this embodiment: the protective cover 41 can be installed in the groove 49 on the surface of the inner ring 1 and the outer ring 2 by the mounting component 46. The protective cover 41 contacts the inner wall of the groove 49 of the outer ring 2 through the rolling contact part, which can reduce friction and limit the movement of the inner ring 1 and the outer ring 2. The feed port 48 facilitates the quick addition of lubricating oil. The spring 45, together with the cover plate 43, can achieve a stable seal on the feed port 48.

[0028] Preferably, the mounting assembly 46 includes a screw 461 rotatably connected to the inner wall of the groove 49 of the inner ring body 1 and a plurality of guide posts 464 fixedly connected. One end of the screw 461 is provided with a control hole 462, and the surface of the protective cover 41 is provided with a screw hole 463 and a plurality of guide holes 465. The screw 461 is threadedly connected to the inner wall of the screw hole 463, and the guide posts 464 are inserted into the inner wall of the guide holes 465. The plurality of guide posts 464 are longer than the length of the screw 461, so that the guide posts 464 can be inserted into the guide holes 465 in advance for guidance.

[0029] In this embodiment: During installation, the guide hole 465 on the surface of the protective cover 41 can be fitted onto the guide post 464. Then, a tool is inserted into the control hole 462, and the screw 461 is rotated. The screw 461 is connected to the screw hole 463, which drives the protective cover 41 to move and fit tightly to achieve installation.

[0030] Preferably, the rolling contact portion includes a plurality of balls 410 and a plurality of rollers 411. The plurality of balls 410 are disposed in the inner wall of the protective cover 41, and the plurality of rollers 411 are rotatably connected to the inner wall of the protective cover 41. A limiting groove is formed in the inner wall of the groove 49 on the surface of the outer ring body 2, and the balls 410 contact the inner wall of the limiting groove.

[0031] In this embodiment, the ball 410 and the roller 411 can contact the inner wall of the groove 49 on the surface of the outer ring body 2, thereby providing support and reducing friction. The limiting groove, in conjunction with the ball 410, can further limit the movement and ensure stability.

[0032] Working principle: During use, the protective cover 41 is inserted into the groove 49 on the surface of the inner ring 1 and the outer ring 2. The guide hole 465 on the surface of the protective cover 41 is first fitted onto the guide post 464 for guidance. Then, a tool is inserted into the control hole 462, and the screw 461 is rotated. The screw 461 connects with the screw hole 463, which drives the protective cover 41 to move and fit tightly to achieve installation. When it is tightly fitted, the ball 410 contacts the inner wall of the limiting groove, and the roller 411 contacts the surface of the outer ring 2. The inner wall of the groove 49 is in contact with the ball 410 and the roller 411, which can reduce friction during movement. At the same time, the protective cover 41 can restrict the inner ring 1 and the outer ring 2, ensuring the stable operation of the inner ring 1 and the outer ring 2. When it is necessary to adjust the lubricating oil, the cover plate 43 can be pushed by the anti-slip strip 44, the spring 45 is stressed, and then lubricating oil is added through the feed port 48. After adding, the cover plate 43 is released, the spring 45 drives the cover plate 43 to return to its original position, and the feed port 48 is blocked.

Claims

1. A rotating bearing for a mechanical fingerprint lock, comprising an inner ring body (1), an outer ring body (2), a roller body (3), and a protective device (4), characterized in that: The inner ring body (1) is disposed inside the outer ring body (2), the roller body (3) is disposed between the inner ring body (1) and the outer ring body (2), and the protective device (4) is disposed on the inner ring body (1); The protective device (4) includes two protective covers (41). Grooves (49) are provided on both sides of the inner ring body (1) and the outer ring body (2). The protective cover (41) is inserted into the inner wall of the groove (49). An installation component (46) is provided in the groove (49) on the surface of the inner ring body (1) for installing and positioning the protective cover (41). A sliding groove (42) is provided on the surface of the protective cover (41). A feed port (48) is provided on the inner wall of the sliding groove (42). A cover plate (43) is slidably connected to the inner wall of the sliding groove (42). A sliding rod (47) is fixedly connected to the inner wall of the sliding groove (42). The sliding rod (47) is slidably connected to the inner wall of the cover plate (43). A rolling contact part is provided on the surface of the protective cover (41) for contacting the inner wall of the groove (49) on the surface of the outer ring body (2).

2. The rotating bearing of a mechanical fingerprint lock according to claim 1, characterized in that: The mounting assembly (46) includes a screw (461) rotatably connected to the inner wall of the groove (49) of the inner ring body (1) and a plurality of fixedly connected guide posts (464). One end of the screw (461) is provided with a control hole (462). The surface of the protective cover (41) is provided with a screw hole (463) and a plurality of guide holes (465). The screw (461) is threadedly connected to the inner wall of the screw hole (463), and the guide posts (464) are inserted into the inner wall of the guide holes (465).

3. The rotating bearing of a mechanical fingerprint lock according to claim 2, characterized in that: Multiple guide posts (464) are longer than the screw (461) to facilitate early insertion of the guide posts (464) into the guide holes (465) for guidance.

4. The rotating bearing of a mechanical fingerprint lock according to claim 1, characterized in that: A spring (45) is fitted on the surface of the slide bar (47), and the two ends of the spring (45) are fixedly connected to the inner walls of the cover plate (43) and the slide groove (42), respectively.

5. The rotating bearing of a mechanical fingerprint lock according to claim 1, characterized in that: The surface of the cover plate (43) is fixedly connected with anti-slip strips (44), and there are multiple anti-slip strips (44) arranged at equal intervals.

6. The rotating bearing of a mechanical fingerprint lock according to claim 5, characterized in that: The anti-slip strip (44) is made of rubber.

7. The rotating bearing of a mechanical fingerprint lock according to claim 1, characterized in that: The rolling contact portion includes a plurality of balls (410) and a plurality of rollers (411). The plurality of balls (410) are disposed in the inner wall of the protective cover (41), and the plurality of rollers (411) are rotatably connected to the inner wall of the protective cover (41).

8. The rotating bearing of a mechanical fingerprint lock according to claim 7, characterized in that: A limiting groove is formed on the inner wall of the groove (49) on the surface of the outer ring body (2), and the ball (410) contacts the inner wall of the limiting groove.

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