Gravity self-locking type door lock structure
By adopting a gravity self-locking door lock structure on the cooling tower maintenance door, the locking and opening is achieved by using gravity, the problem of existing door locks being easily stuck in humid environments is solved, and the automatic locking and opening function is realized, reducing costs.
Patent Information
- Application Number
- CN202421625106.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-10
- Publication Date
- 2025-06-27
- Estimated Expiration
- 2034-07-10
AI Technical Summary
The door locks of the existing cooling tower maintenance door are prone to rust in humid environments, resulting in spring corrosion and locking pins stuck, making the door unable to open normally, and the structure is complex and the cost is high.
The gravity self-locking door lock structure is adopted, and the locking tongue and lock lever connected by the hinged shaft are locked by gravity by using gravity to make the locking tongue fall into the locking groove of the lock buckle. There is no need for a spring and the structure is simple.
It realizes the automatic locking and opening function that is not easy to stagnate in humid environments, avoids door lock failure caused by spring rust, and has a simple structure and low cost.
Smart Images
Figure CN223034721U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of cooling towers, and particularly relates to a gravity self-locking door lock structure. Background Art
[0002] The existing door lock of the cooling tower access door for maintenance is as Figure 1 shown, including a rotary door lock tongue 12, a lock catch 13, a door lock fixed frame 14, and a stainless steel rotary handle 15; the rotary handle is used to open the door, and a spring is arranged inside. After rotation, the handle can automatically rebound; the spring inside the door lock is made of 65Mn spring steel, which is easy to rust in a humid environment. After running for a period of time, the spring rust causes the lock pin to get stuck, making it difficult to rotate the handle and unable to open the door; the structure and assembly of this door lock are complex, and the cost is relatively high. Summary of the Utility Model
[0003] Aiming at the above problems, the utility model provides a gravity self-locking door lock structure, which is applied to the maintenance door of the cooling tower. It uses gravity to lock, can be easily opened and closed, does not require a spring, has a simple structure, and has no risk of getting stuck.
[0004] To achieve the above object, the technical solution adopted by the utility model is:
[0005] A gravity self-locking door lock structure includes a door lock frame and a lock fastener; on the panel of the door lock frame, a swingable lock tongue member is connected through a hinge shaft, and a lock rod is inserted through the lock tongue member; both ends of the lock rod are connected with ball head handles; an activity hole for the up and down movement of the lock rod is opened on the door lock frame; a locking groove for clamping the end of the lock tongue member is arranged at the upper end of the lock fastener.
[0006] As a further improvement of the above solution, the lock fastener is an L-shaped plate, one side is a mounting plate, the other side is a lock catch plate, a slope for facilitating the upward sliding of the lock tongue member is arranged on the outer side of the lock catch plate, and a locking groove for facilitating the entry of the lock tongue member is arranged on the inner side of the upper end.
[0007] As a further improvement of the above solution, the lock tongue member is sleeved on the lock rod, and nuts for fixing the lock tongue member are installed at both ends of the lock rod.
[0008] As a further improvement of the above solution, a rotatable locking rod is vertically arranged inside the door lock frame, the upper end of the locking rod extends out from the top surface of the door lock frame, and an adjusting rod is installed; a locking pin that can extend into the activity hole and block the lock tongue member is arranged on the locking rod.
[0009] Compared with the prior art, the beneficial effects of the utility model are:
[0010] 1. The structure of this door lock is simple. It uses gravity to make the lock tongue fall into the locking groove of the lock catch to achieve locking, and does not require a spring. Therefore, the problem of getting stuck caused by spring rust can be avoided.
[0011] 2. When closing the inspection door, the lock tongue and the lock catch will contact each other. Under the reaction force of the inclined structure of the lock catch, the lock tongue slides upward. During the closing process, the lock tongue slides upward to the top of the inclined surface and then begins to fall downward by its own gravity and falls into the locking position of the lock catch, achieving the effect of automatically closing and locking the inspection door by gravity.
[0012] 3. When you need to open the door, you only need to lift the ball handle of the door lock upwards and push it lightly into the door to pull the lock tongue out of the locking groove of the lock buckle. After passing the top of the lock buckle, it reaches the inclined position of the lock buckle. At this time, the door lock is in the unlocked state. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Figure 1 This is a schematic diagram of the existing cooling tower maintenance door lock structure.
[0014] Figure 2 It is a schematic diagram of the structure after the utility model is installed.
[0015] Figure 3 This is a schematic diagram of the structure when the door lock is opened.
[0016] Figure 4 This is a schematic diagram of the structure of the door lock when it is closed.
[0017] Figure 5 It is a schematic diagram of the structure with a locking rod.
[0018] Figure 6 Schematic diagram of the locking rod installation structure inside the door lock frame.
[0019] In the figure: 11, inspection door; 12, rotary door lock bolt; 13, lock catch; 14, door lock fixing frame; 15, stainless steel rotating handle; 22, lock bolt piece; 23, lock catch piece; 24, door lock frame; 25, ball handle; 26, hinge shaft; 27, locking rod; 28, nut; 29, movable hole; 30, adjusting rod; 31, locking rod; 32, locking pin; 231, locking groove; 232, lock catch plate; 233, inclined surface. DETAILED DESCRIPTION
[0020] In order to enable those skilled in the art to better understand the technical solution, the utility model is described in detail below in conjunction with embodiments. The description in this section is only exemplary and explanatory and should not have any limiting effect on the protection scope of the utility model.
[0021] Embodiment 1:
[0022] like Figures 1-4As shown, the specific scheme of this embodiment is: a gravity self-locking door lock structure, including a door lock frame 24 and a lock member 23; a lock tongue member 22 that can swing up and down is connected to the panel of the door lock frame 24 through a hinge shaft 26, and a lock rod 27 is installed on the lock tongue member 22; both ends of the lock rod 27 are connected to the ball handle 25; a movable hole 29 for the lock rod 27 to move up and down is opened on the door lock frame 24; a locking groove 231 for clamping the end of the lock tongue member 22 is provided on the upper end of the lock member 23.
[0023] Specifically, the locking member 23 is an L-shaped plate, one side of which is a mounting plate and the other side is a locking plate 232. The outer side of the locking plate 232 is provided with an inclined surface 233 for facilitating the upward sliding of the locking tongue member 22, and the inner side of the upper end is provided with a locking groove 231 for facilitating the entry of the locking tongue member 22.
[0024] Specifically, the locking tongue piece 22 is sleeved on the locking rod 27 , and nuts 28 for fixing the locking tongue piece 22 are installed at both ends of the locking rod 27 .
[0025] Working principle:
[0026] The door lock frame 24 is a box structure, which is installed on the inspection door 11, and the lock tongue piece 22 is located outside the panel of the door lock frame 24; the movable hole 29 is a long strip hole, which is convenient for the lock rod 27 to move up and down inside; the lock rod 27 passes through the center hole of the lock tongue piece 22 and is fixed by a nut 28; the rear end of the lock tongue piece 22 is installed on the door lock frame 24 through a hinge shaft 26; so that the lock tongue piece 22 can be flipped up and down and swung; the ball head handle 25 is a stainless steel ball handle.
[0027] When closing the inspection door 11, the lock tongue member 22 and the lock catch member 23 will contact each other. Under the reaction force of the inclined surface 233 structure of the lock catch member 23, the lock tongue slides upward. During the closing process, the lock tongue slides upward to the top of the inclined surface 233 and then begins to lock downward by its own gravity and falls into the locking position of the lock catch 13, thereby achieving the effect of automatically closing and locking the inspection door 11 by gravity.
[0028] When the door needs to be opened, one only needs to lift the ball handle 25 of the door lock upwards and gently push it into the door to pull the lock tongue 22 out of the locking groove 231 of the lock catch 23, pass the top of the lock catch 13, and reach the inclined surface 233 of the lock catch 13. At this time, the door lock is in an unlocked state.
[0029] Embodiment 2:
[0030] like Figures 5-6 As shown, based on the structure of Example 1, a rotatable locking rod 31 is vertically arranged in the door lock frame 24, the upper end of the locking rod 31 extends from the top surface of the door lock frame 24 and is installed with an adjusting rod 30; the locking rod 31 is provided with a locking pin 32 which can extend into the movable hole 29 and block the lock tongue member 22.
[0031] Specifically, mounting holes are formed at the top and bottom surfaces of the door lock frame 24. The upper and lower ends of the locking rod 31 pass through the mounting holes for installation. The lower end is connected to a nut, and the upper end is connected to the adjusting rod 30. A locking pin 32 is installed in the middle. Since the diameter of the locking rod 31 is relatively large, a threaded hole can be formed in the locking rod 31. Then, threads are designed at the end of the locking pin 32, so that the locking pin 32 can be installed in the threaded hole of the locking rod 31 through threaded connection. The locking pin 32 is installed perpendicular to the locking rod 31. When the adjusting rod 30 is toggled, the locking rod 31 is driven to rotate, and the locking pin 32 is driven to extend into the moving hole 29, thereby blocking the lock tongue member 22, preventing the lock tongue member 22 from loosening, achieving the locked state, and avoiding the opening of the lock tongue member 22 caused by misoperation.
[0032] It should be noted that in this text, the terms "including", "comprising" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or further includes elements inherent to such process, method, article or device. Specific examples are used in this article to elaborate on the principle and implementation manner of the technical solution of the present invention. The description of the above examples is only used to help understand the method and its core idea of the present invention. The above is only the preferred implementation manner of the present invention. It should be pointed out that due to the limited nature of written expression and objectively existing infinite specific structures, for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements, refinements or changes can be made, or the above technical features can be combined in an appropriate manner; these improvements, refinements, changes or combinations, or directly applying the concept and technical solution of the present invention to other occasions without improvement, shall all be regarded as the protection scope of the present invention.
Claims
1. A gravity self-locking door lock structure, comprising a door lock frame (24) and a lock member (23); characterized in that: A locking tongue member (22) capable of swinging up and down is connected to the panel of the door lock frame (24) via a hinge shaft (26), and a locking rod (27) is inserted and installed on the locking tongue member (22); both ends of the locking rod (27) are connected to a ball handle (25); a movable hole (29) for the locking rod (27) to move up and down is provided on the door lock frame (24); and a locking groove (231) for clamping the end of the locking tongue member (22) is provided at the upper end of the locking member (23).
2. A gravity self-locking door lock structure according to claim 1, characterized in that: The locking member (23) is an L-shaped plate, one side of which is a mounting plate and the other side of which is a locking plate (232). The locking plate (232) is provided with an inclined surface (233) on the outer side for facilitating the upward sliding of the locking tongue member (22), and a locking groove (231) on the inner side of the upper end for facilitating the entry of the locking tongue member (22).
3. A gravity self-locking door lock structure according to claim 1, characterized in that: The locking tongue piece (22) is sleeved on a locking rod (27), and nuts (28) for fixing the locking tongue piece (22) are installed at both ends of the locking rod (27).
4. A gravity self-locking door lock structure according to claim 1, characterized in that: A rotatable locking rod (31) is vertically arranged in the door lock frame (24), the upper end of the locking rod (31) extends from the top surface of the door lock frame (24) and is installed with an adjusting rod (30); the locking rod (31) is provided with a locking pin (32) which can extend into the movable hole (29) and block the lock tongue member (22).