Lock catch and safety isolation locking device
By designing a latch structure suitable for any padlock, the problem of having to completely remove existing security isolation locking devices when changing lock types has been solved, thus making the replacement process more convenient.
Patent Information
- Application Number
- CN202423150425.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-20
- Publication Date
- 2025-12-12
- Estimated Expiration
- 2034-12-20
AI Technical Summary
Existing safety isolation interlocking devices require complete removal and installation when changing lock types, which is inconvenient to use.
A locking structure has been designed, including a locking bar and a telescopic component, which can be matched with any type of padlock. The lock type can be changed by changing the padlock, while the locking part does not need to be replaced.
This allows for changing only the padlock when switching lock types, without needing to remove and install the latch, thus improving the convenience of replacement and use.
Smart Images
Figure CN223661582U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of safety isolation and locking devices, and in particular to a latch and a safety isolation and locking device. Background Technology
[0002] Security interlocking devices are a familiar and widely used industrial product in people's lives. Due to their inherent security features, they provide a sense of security, and installing locks in necessary locations has become a standard security measure. Security interlocking devices on the market mainly include various types such as ordinary locks, electronic locks, and fingerprint locks. Each type of interlocking device is an independent unit. When replacing different interlocking devices, users need to completely remove the existing interlocking device before installing the new one, making replacement and use quite cumbersome. Utility Model Content
[0003] The purpose of this utility model is to solve the above-mentioned technical problems and provide a latch and a safety isolation locking device. The latch can be matched with any type of padlock. When changing the lock type, only the different type of padlock needs to be replaced. The latch part does not need to be replaced, making it more convenient to replace and use, unlike traditional safety isolation locking devices that require complete removal.
[0004] To achieve the above objectives, the present invention provides the following solution: The present invention discloses a latch, including a locking rod and a telescopic component;
[0005] The locking bar includes a first arm and a second arm that are parallel to each other. The first arm has a first locking tooth on the side away from the second arm. The first locking tooth is arranged along the length of the first arm.
[0006] The telescopic component includes a mounting end and a telescopic end. The mounting end has a sliding hole for fitting onto the second support arm. The telescopic end has a movable hole for fitting onto the first support arm. The inner wall of the movable hole has a second locking tooth for engaging with the first locking tooth. There is a movable gap between the movable hole and the first support arm, which is large enough to allow the first locking tooth to disengage from the second locking tooth. The mounting end and the telescopic end are respectively provided with ear plates, and the ear plates have ear plate holes for the lock beam of the padlock to pass through.
[0007] Preferably, the second arm has a third locking tooth on the side away from the first arm, and the inner wall of the sliding hole has a fourth locking tooth for engaging with the third locking tooth. There is a moving gap between the sliding hole and the second arm, and the moving gap has a size that allows the third locking tooth to disengage from the fourth locking tooth.
[0008] Preferably, the locking rod is a U-shaped rod.
[0009] Preferably, the telescopic component includes a guide rod, a sliding sleeve, and a locking ring. The inner sleeve hole of the sliding sleeve is the sliding hole, and the inner ring hole of the locking ring is the movable hole. Both the sliding sleeve and the locking ring are provided with sleeves. The sleeve of the sliding sleeve is sleeved on one end of the guide rod, and the sleeve of the locking ring is sleeved on the other end of the guide rod. The ear plate is provided on the sleeve.
[0010] Preferably, a return spring is sleeved on the guide rod, and the two ends of the return spring are respectively abutted or fixedly connected to the sleeve of the sliding sleeve and the sleeve of the locking ring.
[0011] Preferably, the cross-section of the guide rod and the cross-section of the tube hole of the sleeve are corresponding circles or polygons.
[0012] Preferably, the first locking tooth and the second locking tooth are mutually cooperating reverse teeth.
[0013] Preferably, the first locking tooth is a hemispherical groove, and the second locking tooth is a hemispherical protrusion.
[0014] A safety isolation locking device is also disclosed, including a padlock and the aforementioned latch, wherein the padlock includes a locking beam for passing through the ear plate hole.
[0015] Preferably, the padlock is a mechanical lock, a combination lock, a fingerprint lock, an iris lock, a facial recognition lock, or a lock with multiple unlocking modes.
[0016] The present invention achieves the following technical advantages over the prior art:
[0017] In this invention, the latch can be matched with any type of padlock, such as mechanical lock, combination lock, fingerprint lock, iris lock, facial recognition lock, or multi-unlocking mode lock. When changing the lock type, only the different type of padlock needs to be replaced, and the latch does not need to be replaced, making it more convenient to replace and use, unlike traditional security isolation locking devices that need to be completely removed when replacing. Attached Figure Description
[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0019] Figure 1 This is a perspective structural diagram of the safety isolation interlocking device in the embodiment;
[0020] Figure 2This is a semi-perspective, semi-sectional view of the latch structure in the embodiment;
[0021] Figure 3 This is a top view of the latch structure in the embodiment;
[0022] Figure 4 This is a schematic diagram of the connection structure between the ear plate and the sleeve in the embodiment.
[0023] Explanation of reference numerals in the attached diagram: 1. Locking rod; 2. Locking ring; 3. Sliding sleeve; 4. Guide rod; 5. Return spring; 6. Sleeve; 7. Ear plate; 8. First locking tooth; 9. Second locking tooth; 10. Padlock; 11. Sliding hole; 12. Movable hole; 13. Ear plate hole. Detailed Implementation
[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0025] Example 1
[0026] This embodiment provides a latch, such as Figures 1 to 4 As shown, it includes a locking rod 1 and a telescopic component;
[0027] The locking rod 1 includes a first arm and a second arm, which are parallel to each other. A first locking tooth 8 is provided on the side of the first arm away from the second arm, and the first locking tooth 8 is arranged along the length direction of the first arm.
[0028] The telescopic component includes a mounting end and a telescopic end. The mounting end has a sliding hole 11 for fitting onto the second support arm. The telescopic end has a movable hole 12 for fitting onto the first support arm. A second locking tooth 9 is located on the inner wall of the movable hole 12 away from the mounting end, and the second locking tooth 9 engages with a first locking tooth 8. There is a clearance between the movable hole 12 and the first support arm, a clearance large enough to allow the first locking tooth 8 to disengage from the second locking tooth 9. Ear plates 7 are correspondingly provided on both the mounting end and the telescopic end. Each ear plate 7 has an ear plate hole 13 for the lock beam of the padlock 10 to pass through.
[0029] Working principle:
[0030] When the latch is in the locked position (as shown in the attached image) Figure 1As shown), at this time, the padlock 10 is locked on the ear plate 7, that is, the locking beam of the padlock 10 passes through the ear plate hole 13 of the ear plate 7 on the mounting end and the telescopic end. Under the limitation of the locking beam, the telescopic component is in the retracted state. At this time, the second locking tooth 9 of the telescopic end is engaged with the first locking tooth 8. At this time, the telescopic end cannot move along the first support arm, that is, the telescopic component cannot be removed from the locking rod 1.
[0031] When the latch is in the open position (as shown in the attached image) Figure 2 As shown), at this time, the padlock 10 is not locked on the ear plate 7, so that the telescopic end of the telescopic component is in the maximum telescopic position. At this time, the side of the movable hole 12 near the mounting end is attached to the first support arm. At this time, the first locking tooth 8 and the second locking tooth 9 are in the disengaged state. At this time, the sliding hole 11 and the movable hole 12 can be moved outward along the length direction of the first support arm and the second support arm, so that the mounting end and the movable end are disengaged from the first support arm and the second support arm, and the telescopic component can be removed from the locking rod 1.
[0032] When in use, this latch can be matched with any type of padlock 10, such as mechanical locks, combination locks, fingerprint locks, iris locks, facial recognition locks, or multi-unlocking mode locks. Multi-unlocking mode locks can include any two or more of mechanical, combination, fingerprint, iris, and facial recognition methods. When changing the lock type, there is no need to replace the latch part; for example, the already installed lock bar 1 can be removed for easier use. It should be noted that when purchasing the padlock 10, the size should be such that after the padlock 10 is locked onto the ear plate 7, the telescopic component can retract. The degree of retraction should ensure that the second locking tooth 9 and the first locking tooth 8 on the telescopic end can effectively engage. That is, after the lock beam of the padlock 10 passes through the ear plates 7 of the fixed end and the telescopic end, it can limit the ear plates 7 of the fixed end and the telescopic end, preventing the fixed end and the telescopic end from moving away, and ensuring that the second locking tooth 9 and the first locking tooth 8 will not separate after engaging. If there is no padlock 10 of suitable size on the market, the latch can be made according to the size of commonly used padlock 10 on the market, as long as the second locking tooth 9 and the first locking tooth 8 can effectively engage when the commonly used padlock 10 is locked on the ear plate 7.
[0033] In one implementation, such as Figures 1 to 4 As shown, the second arm has a third locking tooth (not shown) on the side away from the first arm, and a fourth locking tooth (not shown) is provided on the inner wall of the sliding hole 11. The fourth locking tooth is used to engage with the third locking tooth. There is a moving gap between the sliding hole 11 and the second arm, and the moving gap is large enough to allow the third locking tooth to disengage from the fourth locking tooth. In this way, both the second arm and the first arm can lock the telescopic component by engaging the locking teeth.
[0034] In one implementation, such as Figures 1 to 4 As shown, locking rod 1 is a U-shaped rod.
[0035] In one implementation, such as Figures 1 to 4 As shown, the locking rod 1 can also be an M-shaped rod or a door-shaped rod, etc., as long as it has a first arm and a second arm that are parallel to each other. It can even include only the first arm and the second arm. For example, the first arm and the second arm can be directly welded to the two door leaves for use. Of course, there are many ways to use it, which will not be elaborated here. It can be set according to the actual situation.
[0036] Furthermore, in one embodiment, such as Figures 1 to 4 As shown, the cross-section of the U-shaped rod is circular or rectangular. When the cross-section of the U-shaped rod is circular, the corresponding cross-section of the sliding hole 11 is circular, and the movable hole 12 is an elongated hole with semicircular ends. When the cross-section of the U-shaped rod is rectangular, the corresponding cross-section of the sliding hole 11 is rectangular, and the movable hole 12 is rectangular, with the rectangular cross-section of the movable hole 12 being longer than the rectangular cross-section of the U-shaped rod.
[0037] In one implementation, such as Figures 1 to 4 As shown, the sliding hole 11 and the U-shaped rod (second arm) are fitted with a clearance, and the clearance cannot be too large.
[0038] In one implementation, such as Figures 1 to 4 As shown, the telescopic component includes a locking ring 2, a sliding sleeve 3, and a guide rod 4. The inner sleeve hole of the sliding sleeve 3 is a sliding hole 11, and the inner ring hole of the locking ring 2 is a movable hole 12. Both the sliding sleeve 3 and the locking ring 2 are provided with sleeves 6. The sleeve 6 of the sliding sleeve 3 is fitted onto one end of the guide rod 4, and the sleeve 6 of the locking ring 2 is fitted onto the other end of the guide rod 4. Ear plates 7 are provided on the sleeves 6. The number of ear plates 7 is set as needed. Preferably, there is one ear plate 7 on the sleeve 6 of the locking ring 2 and one ear plate 7 on the sleeve 6 of the sliding sleeve 3. By pushing the ear plates 7 of the locking ring 2 and the sliding sleeve 3 relative to each other, the sleeves 6 can slide along the guide rod 4, so that the locking ring 2 and the sliding sleeve 3 are relatively close, realizing the retraction of the telescopic component. When the first locking tooth 8 and the second locking tooth 9 are engaged (if there are three locking teeth and a fourth locking tooth, the third locking tooth and the fourth locking tooth will also be engaged at this time), the locking beam of the padlock 10 passes through the ear plate hole 13, thus completing the locking.
[0039] In one implementation, such as Figures 1 to 4 As shown, a return spring 5 is sleeved on the guide rod 4. The two ends of the return spring 5 are respectively abutted or fixedly connected to the sleeve 6 of the sliding sleeve 3 and the sleeve 6 of the locking ring 2. With the return spring 5, after the padlock 10 is removed, the sliding sleeve 3 and the locking ring 2 will automatically spring away, so that the telescopic component is in the maximum extension state, at which time the telescopic component can be removed from the locking rod 1.
[0040] In one implementation, such as Figures 1 to 4As shown, the cross-section of the guide rod 4 and the cross-section of the tube hole of the sleeve 6 correspond, and both can be circular or both can be polygonal. Polygons can be triangles, quadrilaterals, pentagons, etc., and quadrilaterals can be squares, rectangles, or rhombuses, etc. Using polygons ensures that the guide rod 4 and the sleeve 6 will not rotate relative to each other, but will only move along the axial direction. A square is preferred.
[0041] In one implementation, such as Figures 1 to 4 As shown, the first locking tooth 8 and the second locking tooth 9 are counter-tooths that cooperate with each other. The advantage of using counter-tooths is that after the first locking tooth 8 and the second locking tooth 9 are engaged, the telescopic component can only move inward along the two arms of the locking rod 1 and cannot retract outward.
[0042] In one implementation, such as Figures 1 to 4 As shown, the first locking tooth 8 and the second locking tooth 9 are equilateral triangular teeth or isosceles triangular teeth that cooperate with each other. The advantage of using equilateral triangular teeth or isosceles triangular teeth is that after the first locking tooth 8 and the second locking tooth 9 are engaged, the telescopic component can neither move inward nor retract outward.
[0043] In one implementation, such as Figures 1 to 4 As shown, the first locking tooth 8 is a hemispherical groove, and the second locking tooth 9 is a hemispherical protrusion. The hemispherical protrusion fits into the hemispherical groove, which can achieve the same effect as an equilateral triangular tooth.
[0044] Example 2
[0045] This embodiment provides a safety isolation interlocking device, such as Figures 1 to 4 As shown, it includes a padlock 10 and a latch as in Embodiment 1. The padlock 10 includes a locking beam for passing through the ear plate hole 13.
[0046] Working principle:
[0047] When the telescopic component is retracted, i.e., the movable end (such as the locking ring 2) and the mounting end (such as the sliding sleeve 3) are relatively close, the second locking tooth 9 and the first locking tooth 8 of the locking ring 2 engage, and the locking beam of the padlock 10 passes through the ear plate hole 13 of the ear plate 7, thus locking the movable end (such as the locking ring 2) and the mounting end (such as the sliding sleeve 3) so that they cannot move away from each other, and the locking is successful. At this time, the telescopic component cannot be removed from the locking rod 1. When the padlock 10 is removed, the movable end (such as the locking ring 2) and the mounting end (such as the sliding sleeve 3) are no longer restricted, and the movable end (such as the locking ring 2) and the mounting end (such as the sliding sleeve 3) can move away from each other, so that the second locking tooth 9 and the first locking tooth 8 disengage, and the telescopic component can be removed, completing the unlocking.
[0048] In one implementation, such as Figures 1 to 4As shown, padlock 10 can be a mechanical lock, combination lock, fingerprint lock, iris lock, facial recognition lock, or multi-mode lock. Multi-mode locks can include any two or more of the following unlocking modes: mechanical unlocking, combination unlocking, fingerprint unlocking, iris unlocking, and facial unlocking.
[0049] This utility model uses specific examples to illustrate its principles and implementation methods. The above description of the embodiments is only for the purpose of helping to understand the method and core idea of this utility model. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the idea of this utility model. In summary, the content of this specification should not be construed as a limitation of this utility model.
Claims
1. A latch, characterized in that, Includes a locking rod (1) and a telescopic component; The locking bar (1) includes a first arm and a second arm that are parallel to each other. The first arm is provided with a first locking tooth (8) on the side away from the second arm. The first locking tooth (8) is arranged along the length direction of the first arm. The telescopic component includes an installation end and a telescopic end. The installation end is provided with a sliding hole (11) for fitting onto the second support arm. The telescopic end is provided with a movable hole (12) for fitting onto the first support arm. The inner wall of the movable hole (12) is provided with a second locking tooth (9) for engaging with the first locking tooth (8). There is a movable gap between the movable hole (12) and the first support arm. The movable gap is large enough to allow the first locking tooth (8) to disengage from the second locking tooth (9). The installation end and the telescopic end are respectively provided with ear plates (7). The ear plates (7) have ear plate holes (13) through which the lock beam of the padlock (10) passes.
2. The latch according to claim 1, characterized in that, The second arm has a third locking tooth on the side away from the first arm, and the inner wall of the sliding hole (11) has a fourth locking tooth for engaging with the third locking tooth. There is a moving gap between the sliding hole (11) and the second arm, and the moving gap has a size that allows the third locking tooth to disengage from the fourth locking tooth.
3. The latch according to claim 2, characterized in that, The locking rod (1) is a U-shaped rod.
4. The latch according to claim 1, characterized in that, The telescopic component includes a guide rod (4), a sliding sleeve (3), and a locking ring (2). The inner sleeve hole of the sliding sleeve (3) is the sliding hole (11), and the inner ring hole of the locking ring (2) is the movable hole (12). Both the sliding sleeve (3) and the locking ring (2) are provided with sleeves (6). The sleeve (6) of the sliding sleeve (3) is sleeved on one end of the guide rod (4), and the sleeve (6) of the locking ring (2) is sleeved on the other end of the guide rod (4). The ear plate (7) is provided on the sleeve (6).
5. The latch according to claim 4, characterized in that, A return spring (5) is sleeved on the guide rod (4), and the two ends of the return spring (5) are respectively abutted or fixedly connected to the sleeve (6) of the sliding sleeve (3) and the sleeve (6) of the locking ring (2).
6. The latch according to claim 5, characterized in that, The cross-section of the guide rod (4) and the cross-section of the tube hole of the sleeve (6) are corresponding circles or polygons.
7. The latch according to claim 1, characterized in that, The first locking tooth (8) and the second locking tooth (9) are mutually cooperating reverse teeth.
8. The latch according to claim 1, characterized in that, The first locking tooth (8) is a hemispherical groove, and the second locking tooth (9) is a hemispherical protrusion.
9. A safety isolation interlocking device, characterized in that, Includes a padlock (10) and a latch as described in any one of claims 1-8, wherein the padlock (10) includes a locking beam for passing through the ear plate hole (13).
10. The safety isolation interlocking device according to claim 9, characterized in that, The padlock (10) is a mechanical lock, a combination lock, a fingerprint lock, an iris lock, a facial recognition lock, or a lock with multiple unlocking modes.