Tensioning lock easy to clean
By simplifying the lock cylinder and bolt structure, and combining a sealing sleeve and multi-layer sealing ring design, the problems of difficult cleaning and poor sealing performance of existing locks have been solved, resulting in an easy-to-clean and highly sealed lock suitable for food processing and pharmaceutical processing sites.
Patent Information
- Application Number
- CN202423291718.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-31
- Publication Date
- 2026-01-27
- Estimated Expiration
- 2034-12-31
AI Technical Summary
Existing locks are complex in structure and difficult to clean in food and pharmaceutical processing plants, resulting in unsanitary corners and poor sealing performance, which affects the hygiene and durability of the equipment.
An easy-to-clean pull lock was designed by simplifying the structure of the lock cylinder and bolt, reducing sharp edges, and setting a sealing sleeve and multiple sealing rings on the outer periphery of the lock case to ensure airtightness and prevent impurities and foreign objects from entering.
This makes the locks easy to clean, reduces hard-to-clean areas, improves sealing performance and service life, and reduces cleaning costs and the risk of contamination.
Smart Images
Figure CN223838833U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of lock technology, and more specifically to an easy-to-clean pull lock. Background Technology
[0002] In food processing, pharmaceutical processing, and other environments with extremely stringent hygiene and sealing requirements, the design of equipment and facilities must not only meet basic functionality but also focus on avoiding unsanitary corners to prevent the generation and spread of contamination. In these environments, door locks are a critical component, ensuring the door's seal and secure hold. However, existing locks often have complex structures and angular shapes, especially the threaded sections, making them prone to accumulating dirt and grime. These areas are not only difficult to clean but also create unsanitary corners, providing conditions for bacterial growth and thus threatening the safety of food or pharmaceuticals.
[0003] Meanwhile, ordinary pull-locks have complex structures, often featuring sharp edges and telescopic components. These components have poor sealing performance, making them susceptible to foreign object intrusion and further reducing the lock's functionality and durability. Furthermore, in environments with high hygiene requirements, complex lock designs may require more cleaning time and costs, which is extremely detrimental to improving industrial production efficiency.
[0004] Therefore, there is an urgent need in the existing technology for a lock that is simpler in design, easier to clean, and has good sealing performance to meet the high standards of hygiene, safety, and sealing required in special environments such as food processing and pharmaceutical processing. This lock should have a simple structure, a smooth surface design, and reliable sealing capabilities, thereby effectively reducing cleaning difficulty, increasing service life, and lowering the risk of contamination. Utility Model Content
[0005] In view of the shortcomings of the existing technology, the purpose of this application is to provide an easy-to-clean tension lock to solve the problems mentioned in the background art.
[0006] According to one aspect of this application, an easy-to-clean pull lock includes a lock housing, a lock cylinder, a lock shaft, and a lock tongue. The lock housing has an internal mounting hole, and the lock cylinder is installed within the mounting hole. The lock cylinder includes a cylindrical shaft portion rotatably disposed within the mounting hole. A sealing cover is fixedly provided at the upper end of the cylindrical shaft portion. A protruding core portion is fixedly provided at the top of the sealing cover. The bottom edge of the sealing cover is sealed to a first sealing ring, which is fixedly disposed on the outer wall of the lock housing. The cylindrical shaft portion is connected to the upper end of the lock shaft via a ball-head pin, and the upper end of the lock shaft is movably mounted inside the cylindrical shaft portion. The lower end of the lock shaft extends downward beyond the mounting hole. The hole is fixedly connected to the latch. A sealing ring is fixedly provided on the inner side wall of the bottom of the mounting hole inside the lock housing, and a second sealing ring is fixedly provided on the inner side wall of the sealing ring. The second sealing ring is rotatably and sealingly connected to the outer side wall of the lock shaft. A sealing sleeve is threaded on the outer side wall of the lock housing. A third sealing ring is fixedly provided at the upper opening of the sealing sleeve. The upper surface of the third sealing ring is in contact and sealingly connected to the lower surface of the first sealing ring. A fourth sealing ring is fixedly provided at the lower opening of the sealing sleeve. The inner side wall of the fourth sealing ring is rotatably and sealingly connected to the upper outer side wall of the latch. The lower end of the latch is located outside the sealing sleeve.
[0007] Preferably, the cylindrical shaft portion has a pair of symmetrically arranged spiral grooves on its cylindrical wall. The upper end of the locking shaft is inserted into the cylindrical shaft portion, and a ball-head pin is inserted radially on the upper side wall of the locking shaft. The two ends of the ball-head pin are respectively located in the spiral grooves. The inner wall of the assembly hole has an L-shaped groove, which is formed by two interconnected grooves: an axial groove and a circumferential groove. The circumferential groove is located circumferentially on the side wall of the assembly hole, and the axial groove is located axially on the side wall of the assembly hole, with the axial groove located above the circumferential groove. The two ends of the ball-head pin can slide within the L-shaped groove. In the locked state, the two ends of the ball-head pin are located at the upper end of the spiral groove and slide within the axial groove. In the unlocked state, the two ends of the ball-head pin are located at the lower end of the spiral groove and slide within the circumferential groove.
[0008] Preferably, an axially arranged spring is installed inside the cylindrical shaft portion, with one end of the spring acting on the inner end face of the cylindrical shaft portion and the other end of the spring acting on the end of the locking shaft.
[0009] Preferably, the outer wall of the cylindrical shaft is fitted with a retaining wire to form a sealing structure between the outer wall of the cylindrical shaft and the inner wall of the upper end of the mounting hole of the lock housing.
[0010] Preferably, a sealing O-ring is embedded in the outer wall of the sealing ring to form a sealing structure between the outer wall of the sealing ring and the inner wall of the lower end of the mounting hole of the lock housing.
[0011] Preferably, the outer surfaces of the latch and the lock cylinder are rounded.
[0012] Preferably, the sealing cover and the raised core of the lock cylinder are integrally molded.
[0013] The advantages of this application compared with the prior art are as follows: This application provides an easy-to-clean pull lock, which reduces sharp corners in the design of the lock cylinder and lock tongue, thereby reducing dead corners for cleaning; a sealing sleeve is provided on the outer periphery of the lock shell to cover the threads on the outer wall of the lock cover, and sealing rings are provided at the upper and lower openings of the sealing sleeve to ensure sealing, thereby preventing impurities and foreign objects from entering the sealing sleeve; the sealing cover and the raised core of the lock cylinder are integrally formed, thereby ensuring the sealing of the top of the lock cylinder, thereby preventing impurities and foreign objects from entering the lock shell from the top of the lock cylinder. Attached Figure Description
[0014] Figure 1 This is a perspective view of an easy-to-clean tension lock according to an embodiment of this application.
[0015] Figure 2 This is a three-dimensional exploded view of an easy-to-clean tension lock according to an embodiment of this application.
[0016] Figure 3 This is a cross-sectional view of an easy-to-clean tension lock according to an embodiment of this application.
[0017] Figure 4 This is an internal structural diagram of the lock case of an easy-to-clean pull lock according to an embodiment of this application.
[0018] Reference numerals: 1. Lock case; 2. Lock cylinder; 3. Lock shaft; 4. Lock tongue; 5. Assembly hole; 6. Cylindrical shaft; 7. Sealing cover; 8. Protruding core; 9. First sealing ring; 10. Ball head pin; 11. Sealing ring ring; 12. Second sealing ring; 13. Sealing sleeve; 14. Third sealing ring; 15. Fourth sealing ring; 16. Spiral groove hole; 17. L-shaped slide groove; 171. Axial slide groove; 172. Circumferential slide groove; 18. Spring; 19. Locking screw; 20. Sealing O-ring. Detailed Implementation
[0019] To make the content of this application easier to understand, the technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. It should be noted that the terms "front," "rear," "left," "right," "upper," and "lower" used in the following description refer to the accompanying drawings. Figure 3In this context, the terms "inner" and "outer" refer to directions toward or away from the geometric center of a specific component, respectively. Furthermore, terms such as "first," "second," etc., are used for descriptive purposes only and should not be interpreted as indicating or implying relative importance.
[0020] like Figures 1-4As shown, an easy-to-clean pull lock includes a lock housing 1, a lock cylinder 2, a lock shaft 3, and a lock tongue 4. The lock housing 1 has an assembly hole 5 inside, and the lock cylinder 2 is installed within the assembly hole 5. The lock cylinder 2 includes a cylindrical shaft portion 6 rotatably disposed within the assembly hole 5. A retaining wire 19 is embedded in the outer wall of the cylindrical shaft portion 6 to form a sealing structure between the outer wall of the cylindrical shaft portion 6 and the inner wall of the upper end of the assembly hole 5 of the lock housing 1. A sealing cover 7 is fixedly provided at the upper end of the cylindrical shaft portion 6, and a protruding core portion 8 is fixedly provided at the top of the sealing cover 7. The bottom of the sealing cover 7... The side of the lock cylinder 2 is sealed to the first sealing ring 9, and the first sealing ring 9 is fixedly installed on the outer side wall of the lock housing 1. The sealing cover 7 and the protruding core 8 of the lock cylinder 2 are integrally molded. The above design ensures the sealing of the top of the lock cylinder 2, thereby preventing impurities and foreign objects from entering the lock housing 1 from the top of the lock cylinder 2. The cylindrical shaft 6 is connected to the upper end of the lock shaft 3 through the ball head pin 10, and the upper end of the lock shaft 3 is movably installed inside the cylindrical shaft 6. A pair of symmetrically arranged spiral grooves 16 are opened on the cylindrical wall of the cylindrical shaft 6. The upper end of the lock shaft 3 A ball-head pin 10 is inserted into the cylindrical shaft 6 and radially inserted into the upper side wall of the locking shaft 3. Both ends of the ball-head pin 10 are respectively located within the spiral groove hole 16. An L-shaped groove 17 is provided on the inner wall of the assembly hole 5. The L-shaped groove 17 is formed by two interconnected grooves: an axial groove 171 and a circumferential groove 172. The circumferential groove 172 is located circumferentially on the side wall of the assembly hole 5, and the axial groove 171 is located axially on the side wall of the assembly hole 5, with the axial groove 171 positioned above the circumferential groove 172. The ball-head pin 10... The two ends of the ball head pin 10 can slide within the L-shaped groove 17. When the lock is engaged, the two ends of the ball head pin 10 are located at the upper end of the spiral groove 16 and slide within the axial groove 171. When the lock is disengaged, the two ends of the ball head pin 10 are located at the lower end of the spiral groove 16 and slide within the circumferential groove 172. An axially arranged spring 18 is installed inside the cylindrical shaft 6. One end of the spring 18 acts on the inner end face of the cylindrical shaft 6, and the other end of the spring 18 acts on the end of the lock shaft 3.The lower end of the locking shaft 3 extends downward into the mounting hole 5 and is fixedly connected to the locking tongue 4. A sealing ring 11 is fixedly provided on the inner side wall of the bottom of the mounting hole 5 inside the lock housing 1. A sealing O-ring 20 is embedded in the outer side wall of the sealing ring 11 to form a sealing structure between the outer side wall of the sealing ring 11 and the inner side wall of the lower end of the mounting hole 5 of the lock housing 1. A second sealing ring 12 is fixedly provided on the inner side wall of the sealing ring 11. The second sealing ring 12 is rotatably sealed to the outer side wall of the locking shaft 3. A sealing sleeve 13 is threaded onto the outer side wall of the lock housing 1. A third sealing ring 14 is fixedly provided at the upper opening of the sealing sleeve 13. The upper surface of the third sealing ring 14 is flush with the first sealing ring 9. The lower surface is in contact with a sealing connection. A fourth sealing ring 15 is fixedly provided at the lower opening of the sealing sleeve 13. The inner wall of the fourth sealing ring 15 is rotatably sealed to the outer wall of the upper end of the latch 4. In the above design, a sealing sleeve 13 is provided on the outer periphery of the lock housing 1 to cover the threads of the outer wall of the lock cover. Sealing rings are provided at the upper and lower openings of the sealing sleeve 13 to ensure sealing, thereby preventing impurities and foreign objects from entering the sealing sleeve 13. The lower end of the latch 4 is located outside the sealing sleeve 13. The outer surfaces of the latch 4 and the lock cylinder 2 are rounded. In this design, the design of the lock cylinder 2 and the latch 4 reduces sharp corners, thereby reducing dead corners for cleaning.
[0021] In summary, the design of the lock cylinder 2 and the lock tongue 4 reduces sharp edges, thereby reducing hard-to-clean areas and facilitating cleaning. A sealing sleeve 13 is provided on the outer periphery of the lock shell 1 to cover the threads on the outer wall of the lock cover, and sealing rings are provided at the upper and lower openings of the sealing sleeve 13 to ensure sealing, thereby preventing impurities and foreign objects from entering the sealing sleeve 13. The sealing cover 7 and the protruding core 8 of the lock cylinder 2 are integrally formed, thereby ensuring the sealing of the top of the lock cylinder 2, thereby preventing impurities and foreign objects from entering the lock shell 1 from the top of the lock cylinder 2.
[0022] The above embodiments are only used to illustrate the technical solutions of the embodiments of this application, and are not intended to limit them. Although the embodiments of this application have been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features, without departing from the spirit and scope defined by the claims of this application.
Claims
1. An easy-to-clean pull lock, comprising a lock housing (1), a lock cylinder (2), a lock shaft (3), and a lock tongue (4), characterized in that, The lock housing (1) has an assembly hole (5) inside, and the lock cylinder (2) is installed in the assembly hole (5). The lock cylinder (2) includes a cylindrical shaft (6) rotatably disposed in the assembly hole (5). A sealing cover (7) is fixedly provided at the upper end of the cylindrical shaft (6). A protruding core (8) is fixedly provided at the top of the sealing cover (7). The bottom side of the sealing cover (7) is sealed to a first sealing ring (9), and the first sealing ring (9) is fixedly disposed on the outer side wall of the lock housing (1). The cylindrical shaft (6) is connected to the upper end of the lock shaft (3) through a ball head pin (10), and the upper end of the lock shaft (3) is movably installed inside the cylindrical shaft (6). The lower end of the lock shaft (3) extends downward out of the assembly hole (5) and is fixedly connected to the lock tongue (4). The lock housing ( 1) A sealing ring (11) is fixedly provided on the inner side wall of the bottom of the assembly hole (5) inside, and a second sealing ring (12) is fixedly provided on the inner side wall of the sealing ring (11). The second sealing ring (12) is rotatably sealed to the outer side wall of the lock shaft (3). A sealing sleeve (13) is threaded on the outer side wall of the lock shell (1). A third sealing ring (14) is fixedly provided at the upper opening of the sealing sleeve (13). The upper surface of the third sealing ring (14) is in contact with the lower surface of the first sealing ring (9) and is sealed. A fourth sealing ring (15) is fixedly provided at the lower opening of the sealing sleeve (13). The inner side wall of the fourth sealing ring (15) is rotatably sealed to the upper outer side wall of the lock tongue (4). The lower end of the lock tongue (4) is located outside the sealing sleeve (13).
2. The easy-to-clean tension lock according to claim 1, characterized in that, The cylindrical shaft (6) has a pair of symmetrically arranged spiral grooves (16) on its cylindrical wall. The upper end of the locking shaft (3) is inserted into the cylindrical shaft (6), and the ball head pin (10) is inserted radially on the upper side wall of the locking shaft (3). The two ends of the ball head pin (10) are respectively located in the spiral grooves (16). The inner wall of the assembly hole (5) is provided with an L-shaped slide groove (17). The L-shaped slide groove (17) is formed by two interconnected grooves: an axial slide groove (171) and a circumferential slide groove (172). The circumferential slide groove (172) is located on the side wall of the assembly hole (5). In the circumferential direction, the axial groove (171) is provided on the side wall of the assembly hole (5) in the axial direction, and the axial groove (171) is located on the upper side of the circumferential groove (172). The two ends of the ball head pin (10) can slide in the L-shaped groove (17). When the lock is tightened, the two ends of the ball head pin (10) are located at the upper end of the spiral groove hole (16) and slide in the axial groove (171). When the lock is unlocked, the two ends of the ball head pin (10) are located at the lower end of the spiral groove hole (16) and slide in the circumferential groove (172).
3. The easy-to-clean tension lock according to claim 1, characterized in that, An axially arranged spring (18) is installed inside the cylindrical shaft (6). One end of the spring (18) acts on the inner end face of the cylindrical shaft (6), and the other end of the spring (18) acts on the end of the locking shaft (3).
4. The easy-to-clean tension lock according to claim 1, characterized in that, The outer wall of the cylindrical shaft (6) is fitted with a locking wire (19) to form a sealing structure between the outer wall of the cylindrical shaft (6) and the inner wall of the upper end of the mounting hole (5) of the lock housing (1).
5. The easy-to-clean tension lock according to claim 1, characterized in that, A sealing O-ring (20) is embedded in the outer wall of the sealing ring (11) to form a sealing structure between the outer wall of the sealing ring (11) and the inner wall of the lower end of the mounting hole (5) of the lock housing (1).
6. The easy-to-clean tension lock according to claim 1, characterized in that, The outer surfaces of the latch (4) and the lock cylinder (2) are rounded.
7. The easy-to-clean tension lock according to claim 1, characterized in that, The sealing cover (7) and the raised core (8) of the lock cylinder (2) are integrally molded.