A door latch device for a factory gate

Abstract

The utility model relates to door latch technical field and propose a kind of door latch device of factory gate, including first door and second door being symmetrically arranged on door frame, further include: drive guide assembly, set on the first door;Door latch, set on the drive guide assembly, and extend towards the direction of the second door;Locking seat, set on the second door, and with the door latch keep coaxial arrangement, wherein, when the first door and the second door rotate closure, the drive guide assembly drives and guides the door latch and the locking seat connection, locks the first door and the second door.In the utility model, door latch is guided to move in the process that drive guide assembly drives door latch, can ensure that door latch stably connects with the locking seat, and the movement of door latch does not need manual operation, realizes the automatic locking and opening of door latch, can avoid high-altitude operation.

Description

Technical Field

[0001] This utility model relates to the field of door latch technology, and in particular to a door latch device for a factory gate. Background Technology

[0002] Some factories cannot use roller shutter doors due to environmental requirements. Some factories still use double-leaf rotating doors. After the two doors are closed, a latch needs to be inserted between the two doors to restrict their rotation, thus preventing the two doors from being opened from the outside.

[0003] Publication number CN214786736U discloses a novel double-leaf door latch. By setting base plates A and B, the latch can be locked and separated effectively, facilitating the locking and opening of the double-leaf door. However, in this solution, the latch structure requires manual operation, and there is no corresponding guiding mechanism on the latch structure. When the door is subjected to strong winds or vibrations, the door is difficult to close tightly due to insufficient closing power. It is also prone to jamming due to excessive external wind pressure, making it difficult to close the door.

[0004] Therefore, a door latch device for factory gates is proposed to solve the technical problem that existing solutions make it difficult to close the gate tightly when the gate is subjected to strong winds or vibrations, and the gate is prone to jamming due to excessive external wind pressure, thus making it difficult to close the gate. This ensures that the door latch device can adapt to high wind pressure and frequent opening and closing conditions. Utility Model Content

[0005] In view of this, the present invention proposes a door latch device for factory gates, which achieves the technical effect of successfully locking the gate under high wind pressure and frequent opening and closing conditions.

[0006] This utility model proposes a door latch device for a factory gate, including a first door and a second door symmetrically arranged on the door frame, and further comprising: A drive guide assembly is installed on the first door; A latch is provided on the drive guide assembly and extends toward the direction of the second door; A locking seat is disposed on the second door and is coaxially arranged with the door latch. When the first door and the second door are rotated to close, the drive guide assembly drives and guides the latch to connect with the locking seat, thereby locking the first door and the second door.

[0007] Based on the above technical solution, preferably, the drive guidance component includes: A drive unit is horizontally mounted on the first door, and the output end of the drive unit is equipped with the door latch. A guide member, disposed on the first door and close to the latch, is used to guide the latch when the latch is driven at the output end of the drive unit.

[0008] Based on the above technical solution, preferably, the guide component includes a guide seat, which is disposed on the first door and located between the drive unit and the locking seat. The guide seat is provided with a guide hole, which is adapted to the contour of the door latch.

[0009] Based on the above technical solution, preferably, the locking seat is provided with a locking hole, the locking hole and the door bolt are located on the same horizontal line, and the outline of the locking hole is adapted to the outline of the door bolt.

[0010] Based on the above technical solutions, the preferred embodiment also includes: A limiting member is disposed on the first door and spaced apart along the movement direction of the door latch to limit the movement stroke of the door latch.

[0011] Based on the above technical solution, preferably, the latch extends outward to form a follower part; The at least two limiting components are at least two limiting switches. The at least two limiting switches are electrically connected to the driving unit. The at least two limiting switches each have a trigger part. The at least two trigger parts are arranged on the motion path of the follower part, so that when the follower part triggers any one of the trigger parts, the driving unit stops working.

[0012] Based on the above technical solutions, the preferred embodiment also includes: An auxiliary component is provided on the locking seat to guide the latch to be smoothly inserted into the locking hole.

[0013] Based on the above technical solution, preferably, the auxiliary component includes a rotating arm and a pushing unit. The rotating arm is hinged to the locking seat, one end of the rotating arm is hinged to the output end of the pushing unit, and the other end of the rotating arm extends toward the first door, so that when the pushing unit pushes, the other end of the rotating arm abuts against the outer surface of the door latch.

[0014] Based on the above technical solution, preferably, the end of the door latch near the second door is conical, and the side of the locking seat near the first door is recessed.

[0015] Based on the above technical solution, preferably, the taper of the conical end of the latch is 3:2.

[0016] The door latch device for a factory gate provided by this utility model has the following advantages compared with the prior art: (1) The door latch is guided to move during the process of driving the guide component, which can ensure that the door latch is stably connected to the locking seat. Furthermore, the movement of the door latch does not require manual operation, thus realizing automatic locking and unlocking of the door latch and avoiding high-altitude operations. (2) The guide seat is located on the movement path of the bolt. When the bolt actively inserts into the locking seat or separates from the locking seat, the bolt can move relative to the guide seat under the guidance of the guide hole. (3) When the latch is inserted into the locking hole, the locking hole is adapted to the outline of the latch, so that there is no gap between the latch and the locking hole. In this way, when the two doors are subjected to external wind pressure, the first and second doors will not shake, and the latch will not fall out of the locking hole during the shaking process. This ensures that the latch can stably lock the first and second doors. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art 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.

[0018] Figure 1 This is a front view of a door latch device for a factory gate according to the present invention; Figure 2 This is a perspective view of a door latch device for a factory gate according to the present invention; Figure 3 This is a perspective view of another embodiment of the door latch device for a factory gate according to the present invention; Figure 4 This is a partial top view of another embodiment of the door latch device for a factory gate according to the present invention; Figure 5 This is a perspective view of a guide component for a door latch device of a factory gate according to the present invention; Figure 6 This is a perspective view of a door latch device for a factory gate according to the present invention.

[0019] Explanation of reference numerals in the attached drawings: 1. Drive guide assembly; 11. Drive unit; 12. Guide member; 1201. Guide hole; 121. Guide seat; 2. Latch; 3. Locking seat; 301. Locking hole; 4. Limiting member; 41. Trigger part; 5. Auxiliary member; 51. Rotating arm; 52. Pushing unit; 110. First door; 120. Second door. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0021] In the description of the embodiments of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this utility model based on the specific circumstances.

[0022] In the description of the embodiments of this utility model, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this utility model 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 the embodiments of this utility model.

[0023] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0024] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0025] The following disclosure provides numerous different embodiments or examples for implementing various structures of the present invention. To simplify the disclosure, specific examples of components and arrangements are described below. These are merely examples and are not intended to limit the scope of the invention. Furthermore, reference numerals and / or letters may be repeated in different examples. Such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed. In addition, examples of various specific processes and materials are provided in this invention; however, those skilled in the art will recognize the applicability of other processes and / or the use of other materials.

[0026] The technical solution is explained below. The existing solution, when the door is subjected to strong winds or vibrations, suffers from insufficient closing power, making it difficult to close tightly. Excessive external wind pressure can also cause it to jam, further hindering closure. Therefore, if… Figure 1 and Figure 2 As shown, this utility model provides a door latch device for a factory gate, including a first door 110 and a second door 120 symmetrically arranged on the door frame. The first door 110 and the second door 120 rotate relative to the door frame under the drive of a hydraulic system to achieve automatic opening or closing. The device also includes: Drive guide assembly 1 is installed on the first door 110; A latch 2 is disposed on the drive guide assembly 1 and extends toward the second door 120; The locking seat 3 is mounted on the second door 120 and is coaxially positioned with the door latch 2. When the first door 110 and the second door 120 are rotated to close, the drive guide assembly 1 drives and guides the latch 2 to connect with the locking seat 3, thereby locking the first door 110 and the second door 120.

[0027] During the process of driving the door latch 2, the drive guide component 1 guides the door latch 2 to move, which can ensure that the door latch 2 is stably connected to the locking seat 31. Furthermore, the movement of the door latch 2 does not require manual operation, realizing automatic locking and unlocking of the door latch, which can avoid working at height.

[0028] like Figure 1 As shown, to stably guide the latch 2, the drive guide assembly 1 includes: The drive unit 11 is horizontally mounted on the first door 110, and a latch 2 is mounted on the output end of the drive unit 11. A guide member 12 is disposed on the first door 110 and close to the latch 2, for guiding the latch 2 when the latch 2 is driven at the output end of the drive unit 11.

[0029] like Figure 4As shown, in order to stably guide the movement of the latch 2, the guide member 12 includes a guide seat 121, which is disposed on the first door 110 and located between the drive unit 11 and the locking seat 3. The guide seat 121 is provided with a guide hole 1201, which is adapted to the contour of the latch 2.

[0030] Specifically, the guide seat 121 is located on the movement path of the latch 2. That is, regardless of whether the latch 2 is connected to the locking seat 3, the latch 2 is always located inside the guide hole 1201. In this way, when the latch 2 actively inserts into the locking seat 3 or separates from the locking seat 3, the latch 2 can move relative to the guide seat 121 under the guidance of the guide hole 1201.

[0031] like Figure 5 As shown, more specifically, the latch 2 is hinged to the output end of the drive unit 11. When ensuring that the latch 2 can move horizontally under the guidance of the guide hole 1201, the hinged connection between the latch 2 and the output end of the drive unit 11 can achieve quick connection and convenient connection.

[0032] like Figure 2 As shown, the locking seat 3 locks the rotation of the first door 110 and the second door 120 by plugging in. The locking seat 3 is provided with a locking hole 301, which is located on the same horizontal line as the door latch 2, and the outline of the locking hole 301 is adapted to the outline of the door latch 2.

[0033] When the latch 2 is inserted into the locking hole 301, the locking hole 301 conforms to the contour of the latch 2, so that there is no gap between the latch 2 and the locking hole 301. In this way, when the first door 110 and the second door 120 are subjected to external wind pressure, the first door 110 and the second door 120 will not shake. It also prevents the latch 2 from falling out of the locking hole 301 during the shaking process, and ensures that the latch 2 stably locks the first door 110 and the second door 120.

[0034] like Figure 1 As shown, in order to limit the travel of the latch 2, the aforementioned latch device for the factory gate further includes: At least two limiting members 4 are provided on the first door 110 and are spaced apart along the movement direction of the latch 2 to limit the movement stroke of the latch 2.

[0035] By using the limiting component 4 to detect the movement stroke of the latch 2, it can ensure that the latch 2 is stably inserted into the locking hole 301, and when the latch 2 retracts, it can also limit the movement stroke of the latch 2, so that the latch 2 can stably achieve automatic locking and unlocking.

[0036] like Figure 2As shown, the latch 2 extends outward to form a follower part, and the latch 2 pin 21 is hinged to the output end of the drive unit 11. The pin 21 is vertically arranged, and one end of the pin 21 extends vertically downward and serves as the follower part. At least two limiting components 4 are at least two limit switches. At least two limit switches are electrically connected to the drive unit 11. At least two limit switches have a trigger part 41. At least two trigger parts 41 are respectively arranged in the motion path of the follower part, so that when the follower part triggers any one of the trigger parts 41, the drive unit 11 stops working.

[0037] like Figure 2 As shown, two limit switches are configured, both of which are electrically connected to the drive unit 11. Each limit switch has a trigger part 41. When either trigger part 41 is triggered, the drive unit 11 will stop working. The two trigger parts 41 are located at a starting position and an ending position respectively. When the latch 2 is pushed by the drive unit 11 and inserted into the locking hole 301, the pin 21 will contact the trigger part 41 at the ending position during its movement, and stop the operation of the drive unit 11. When the latch 2 is driven by the drive unit 11 and separated from the locking hole 301, the pin 21 will contact the trigger part 41 at the starting position during its retraction movement, and stop the operation of the drive unit 11.

[0038] More specifically, the limiting member 4 also includes a guide rail 42, one end of the pin 21 extends downward to between the two trigger parts 41, and the other end of the pin 21 extends upward and is located between the guide rails 42. The guide rails 42 can also limit the movement stroke of the latch 2.

[0039] Another embodiment of this utility model, such as Figure 3 and Figure 4 As shown, in order to ensure that the latch 2 is smoothly inserted into the locking hole 301, the aforementioned latch device for the factory gate also includes: Auxiliary component 5 is provided on the locking seat 3 to guide the door latch 2 to be smoothly inserted into the locking hole 301.

[0040] The auxiliary component 5 includes a rotating arm 51 and a pushing unit 52. The rotating arm 51 is hinged to the locking seat 3. One end of the rotating arm 51 is hinged to the output end of the pushing unit 52. The other end of the rotating arm 51 extends toward the first door 110 and is used to abut against the outer surface of the latch 2 when the pushing unit 52 pushes.

[0041] Specifically, both the drive unit 11 and the push unit 52 are implemented as hydraulic push rods. The reason for choosing hydraulic push rods is that the torque required for the drive latch 2 to cooperate with the first door 110 and the second door 120 is relatively large, and the traditional electric push rod method is difficult to ensure stable drive of the latch 2.

[0042] Before the latch 2 is inserted into the locking hole 301, the first door 110 and the second door 120 are not fixed. At this time, if the first door 110 or the second door 120 is subjected to a large wind pressure, they are very likely to shake. Also, because the outline of the latch 2 and the locking hole 301 are roughly the same, it is difficult for the latch 2 to be inserted into the locking hole 301. Therefore, to solve this problem, a rotating arm 51 is provided on the locking seat 3. By pushing the unit 52, the arm 51 is driven to rotate so that one end of it is exactly against the outer surface of the latch 2. This can keep the first door 110 and the second door 120 as much as possible on the same horizontal line, thus ensuring that the latch 2 can be smoothly inserted into the locking hole 301.

[0043] More specifically, the rotating arm 51 is located on the side of the locking seat 3 away from the second door 120, so that the rotating arm 51 abuts against the latch 2 from the side away from the second door 120. In this way, the rotation ratio 51 can act on the outer surface of the latch 2 from the direction of closing the first door 110. Even if the first door 110 or the second door 120 is opened by shaking, the direction in which the rotating arm 51 pushes the latch 2 can suppress the shaking of the first door 110 or the second door 120, ensuring that the latch 2 is smoothly inserted into the locking hole 301.

[0044] like Figure 5 As shown, in order to ensure that the latch 2 is smoothly inserted into the locking hole 301, the end of the latch 2 near the second door 120 is conical, and the locking seat 3 near the first door 110 is recessed.

[0045] Specifically, the taper of the conical end of the latch 2 is 3:2, which ensures that the latch 2 can be smoothly inserted into the interior of the locking seat 3.

[0046] When the latch 2 is inserted into the locking hole 301, the conical end of the latch 2 can serve as a guide. At the same time, the locking seat 3 is recessed on the side near the first door 110, which can further guide the latch 2 into the locking hole 301, thereby ensuring that the latch 2 can be properly inserted into the locking hole 301 and ensuring stable locking of the first door 110 and the second door 120.

[0047] It is worth mentioning that when the external wind pressure affects the closing of the first door 110 and the second door 120, there will be an angle between the first door 110 and the second door 120. The rotating arm 51 is located inside the first door 110 and the second door 120, and the rotating arm 51 abuts against the outer surface of the latch 2 in a rotating manner. Therefore, the position and direction of the torque of the rotating arm 51 acting on the latch 2 are very conducive to counteracting the wind pressure on the first door 110, which is beneficial to keeping the first door 110 and the second door 120 on the same horizontal line.

[0048] On the other hand, this utility model also provides a method for using a door latch device for a factory gate, including the following steps: Step 1: Drive unit 11 drives latch 2 to approach locking seat 3; Step 2: The pushing unit 52 pushes the rotating arm 51 to abut against the outer surface of the latch 2, keeping the latch 2 and the locking hole 301 at the same horizontal line; Step 3: The drive unit 11 further drives the latch 2 to extend into the locking hole 301, locking the first door 110 and the second door 120.

[0049] Specifically, taking the first door 110 as an example, with dimensions of 7.75m x 3.87m, and an area of ​​30 square meters, the thrust exerted by the wind pressure on the first door 110 at a wind speed of 10.7m / s is: F = 1 / 2 ρv 2 ×30m 2 Here, ρ is the air density, taken as 1.29 kg / m³. 3 .

[0050] F = 1 / 2 × 1.29 × (10.7) 2 ×30=2214N The area of ​​the first door 110 is 30 square meters and the width-to-height ratio is 2:1. Then the lever arm L_wind = 7.75 / 2 ≈ 3.88. According to the torque balance equation, the thrust required to push the edge of the first door 110 is F1 × L_push = F_wind × L_wind. Therefore, when the wind speed is 10.7 m / s, the force F1 pushing the first door 110 is 2214 N × 3.88 / 7.75 = 1108 N; In this example, the pushing unit 52 uses the rotation of the rotating arm 51 to open the latch 2 of the first door 110. The hinge point is located at one-third of the distance from the rotating arm 51. The distance from the end of the rotating arm 51 that abuts the latch 2 to the hinge point is L1, and the distance from the end of the rotating arm 51 that connects to the pushing unit 52 to the hinge point is L2, where 2 × L1 = L2. Therefore, according to the torque balance equation, the pushing unit 52 only needs to output a force of 554 N to push the first door 110. Thus, to ensure that the pushing unit 52 stably pushes the first door 110, the hinge point of the rotating arm 51 must be 2 × L1 ≤ L2.

[0051] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A door latch device for a factory gate, characterized in that, Including a first door (110) and a second door (120) symmetrically arranged on the door frame, and also including: A drive guide assembly (1) is disposed on the first door (110); A latch (2) is disposed on the output end of the drive guide assembly (1) and extends toward the second door (120); A locking seat (3) is disposed on the second door (120) and is coaxially disposed with the door latch (2); When the first door (110) and the second door (120) are rotated to close, the drive guide assembly (1) drives and guides the latch (2) to connect with the locking seat (3) to lock the first door (110) and the second door (120).

2. The door latch device for the factory gate as described in claim 1, characterized in that, The drive guidance component (1) includes: A drive unit (11) is horizontally mounted on the first door (110), and the output end of the drive unit (11) is provided with the door latch (2). A guide member (12) is disposed on the first door (110) and close to the latch (2) for guiding the latch (2) when the output end of the drive unit (11) drives the latch (2).

3. The door latch device for the factory gate as described in claim 2, characterized in that, The guide member (12) includes a guide seat (121) disposed on the first door (110) and located between the drive unit (11) and the locking seat (3). The guide seat (121) is provided with a guide hole (1201) that is adapted to the contour of the latch (2).

4. The door latch device for the factory gate as described in claim 3, characterized in that, The locking seat (3) is provided with a locking hole (301), the locking hole (301) and the door latch (2) are located on the same horizontal line, and the outline of the locking hole (301) is adapted to the outline of the door latch (2).

5. The door latch device for the factory gate as described in claim 2, characterized in that, Also includes: At least two limiting members (4) are disposed on the first door (110) and spaced apart along the movement direction of the door latch (2) to limit the movement stroke of the door latch (2).

6. The door latch device for a factory gate as described in claim 5, characterized in that, The latch (2) extends outward to form a follower part; The at least two limiting components (4) are at least two limiting switches. The at least two limiting switches are electrically connected to the drive unit (11). The at least two limiting switches each have a trigger part (41). The at least two trigger parts (41) are arranged in the motion path of the follower part. When the follower part triggers any one of the trigger parts (41), the drive unit (11) stops working.

7. The door latch device for the factory gate as described in claim 4, characterized in that, Also includes: An auxiliary component (5) is provided on the locking seat (3) to guide the latch (2) to be smoothly inserted into the locking hole (301).

8. The door latch device for a factory gate as described in claim 7, characterized in that, The auxiliary component (5) includes a rotating arm (51) and a pushing unit (52). The rotating arm (51) is hinged to the locking seat (3). One end of the rotating arm (51) is hinged to the output end of the pushing unit (52). The other end of the rotating arm (51) extends toward the first door (110) and is used to abut against the outer surface of the latch (2) when the pushing unit (52) pushes.

9. The door latch device for a factory gate as described in claim 4, characterized in that, The latch (2) is conical at one end near the second door (120), and the locking seat (3) is recessed on the side near the first door (110).

10. The door latch device for a factory gate as described in claim 9, characterized in that, The taper of the conical end of the latch (2) is 3:2.

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