Bolt mechanical bolt
By designing a mechanical door bolt of a hidden latch, the problem of how to expand the driving line planning under special circumstances when the double-open escape door is not opened frequently is solved, and the effect of cost reduction and function retention is achieved.
Patent Information
- Application Number
- CN202421051148.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Priority Date
- 2024-01-11
- Filing Date
- 2024-05-15
- Publication Date
- 2025-02-11
- Estimated Expiration
- 2034-05-15
AI Technical Summary
In public places where there is a large flow of people and high flexibility in the driving line planning, the infrequently opened doors of double-open escape doors are usually replaced with pin-type door bolts, resulting in the loss of escape function, especially manual type concealed latch door bolts.
Design a mechanical door bolt of a hidden latch, including a hidden latch, a movable seat and a fixed seat. It is connected by a screw. There are slide rails on the left and right sides of the movable seat. The third screw is connected to the slide rail on the side of the fixed seat. The up and down movement of the hidden latch, combined with the design of the limit spring and the lever, enables the door to open and close.
In special cases, this design can change the infrequently opened doors of double-open doors into hidden latch door bolts to replace escape locks, retaining flexibility in driving line planning, while reducing costs and reducing access control and gate control costs.
Smart Images
Figure CN222457123U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of escape locks, in particular to a concealed latch mechanical door bolt. Background Art
[0002] Generally, when installing indoor doors, single doors are usually used when there is little traffic and the traffic flow is simple. However, in most public places, double doors are used as the main installation requirement when considering the large traffic flow and flexible traffic flow. In the building requirements and regulations of advanced countries or mature markets, the use of escape doors and escape door locks is necessary and essential. Whether it is a single door or a double door, all of them need to be installed with escape doors and escape locks. Some escape doors and escape locks need to have additional fire prevention and escape functions.
[0003] There are different actual product installation methods for the product installation and application of double-opening escape doors (one that is often opened is called the main door or primary door, and the one that is not often opened is called the secondary door or secondary door). In addition to the two escape doors (main door and secondary door), both of which are equipped with escape locks, some construction units will choose to install a latch-type door bolt as a substitute for the door that is not often opened. However, the door with a concealed latch basically no longer has an "escape function", especially when a manual concealed latch door bolt is installed. Utility Model Content
[0004] The purpose of the utility model is to provide a concealed bolt mechanical door bolt. The main function of the concealed bolt door bolt is that the construction unit can consider special circumstances and expand the traffic flow planning when necessary, but it is not needed at other times. The double door is changed to a concealed bolt door bolt to replace the escape lock. On the one hand, the purpose of expanding the traffic flow planning when necessary can be retained. On the other hand, it is purely for cost considerations. The cost of the concealed bolt door bolt is much lower than that of the escape lock, or a very small part of the consideration can reduce the access control and door control costs of this door, because the manual concealed bolt can only be manually opened when the main door is opened.
[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:
[0006] A concealed latch mechanical door bolt comprises a concealed latch, a movable seat and a fixed seat, wherein the concealed latch is connected to the movable seat by a screw and the screw can change its length according to demand; slide rails are arranged on the left and right sides of the movable seat, the side of the fixed seat is fixedly connected to one end of a third screw and the other end of the third screw is connected to the slide rail; the upper limit plate is fixed to the upper back portion of the movable seat by a second screw, the lower limit plate is fixed to the lower back portion of the movable seat by a fourth screw and there is a distance between the lower limit plate and the upper limit plate; the limit spring is arranged on the upper limit plate and below the second screw; the shift rod is arranged at the middle position of the fixed seat by a spring pin and the upper end of the shift rod is connected to the upper limit plate.
[0007] Furthermore, at least two slide rails are respectively provided on the left and right side surfaces of the movable seat, and each side surface of the fixed seat is connected with at least two third screws.
[0008] Furthermore, the first screw fixes the limit spring to the upper limit plate to limit the shifting rod.
[0009] On the other hand, the concealed latch mechanical bolt can be installed above the door, or below the door, or both above and below the door.
[0010] Compared with the prior art, the beneficial effects of the utility model are as follows:
[0011] The main function of the concealed bolt is that the construction unit, under special circumstances, will change the double door to a concealed bolt to replace the escape lock. On the one hand, it can retain the purpose of expanding the traffic line planning when necessary, and on the other hand, it can reduce costs. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] Figure 1 It is a concealed bolt mechanical door bolt diagram;
[0013] Figure 2 The state diagram of the concealed bolt being inserted into the lock catch (the door cannot be opened);
[0014] Figure 3 This is the state diagram when the concealed bolt is not inserted into the lock (the door can be opened);
[0015] Figure 4 This is a state diagram where the concealed bolt is not inserted into the lock catch;
[0016] Figure 5 It is a concealed bolt mechanical door bolt installed on the door diagram;
[0017] In the figure: 1. concealed latch; 2. screw rod; 3. fixed seat; 4. movable seat; 5. lever; 6. upper limit plate; 7. lower limit plate; 8. limit spring; 9. spring pin; 10. first screw; 11. second screw; 12. third screw; 13. fourth screw; 14. slide rail. DETAILED DESCRIPTION
[0018] The specific implementation of the present invention will be described in more detail below in conjunction with the schematic diagram. The advantages and features of the present invention will become clearer based on the following description and the scope of the claims. It should be noted that the drawings are all in a very simplified form and are not in exact proportions, and are only used to facilitate and clearly assist in explaining the purpose of the embodiments of the present invention.
[0019] A concealed bolt mechanical door bolt as described in the figure below includes a concealed bolt 1, a movable seat 4 and a fixed seat 3. The concealed bolt 1 is connected to the movable seat 4 by a screw 2 and the screw 2 can change its length according to demand. At least two slide rails 14 are provided on the left and right sides of the movable seat 4. At least two third screws 12 are fixedly connected to each side of the fixed seat 3, and the other end of the third screw 12 is connected to the slide rail 14. The third screw 12 moves up and down along the slide rail 14 provided on the movable seat 4.
[0020] The upper limit plate 6 is fixed to the upper back portion of the movable seat 4 by the second screw 11, the lower limit plate 7 is fixed to the lower back portion of the movable seat 4 by the fourth screw 13 and is spaced from the upper limit plate 6, the first screw 10 fixes the limit spring 8 to the upper limit plate 6 to limit the lever 5, and the limit spring 8 is arranged below the second screw 11 of the upper limit plate 6 by the first screw 10. The lever 5 is arranged at the middle position of the fixed seat 3 by the spring pin 9 and the upper end of the lever 5 is connected to the upper limit plate 6, and the lever 5 can rotate around the spring pin 9.
[0021] The lever 5 rotates downward, the slide rail 14 on the movable seat 4 and the third screw 12 on the fixed seat 3 move upward, and at the same time, the hidden bolt 1 rises and inserts into the lock, so that the door cannot be opened. The lever 5 rotates upward, the slide rail 14 on the movable seat 4 moves downward through the third screw 12 on the fixed seat 3, and at the same time, the hidden bolt drops down, leaving the lock below the door frame, so that the door can be opened. The purpose of the limit spring 8 is to have a switching and elastic resistance feel when the lever 5 leaves the lower limit plate but has not yet contacted the upper limit plate.
[0022] In addition, the concealed latch mechanical bolt can be installed above the door 20, or below the door 20, or both above and below the door 20.
[0023] Through the detailed description of the preferred embodiments above, it is hoped that the features and spirit of the present invention can be more clearly described, and the scope of the present invention is not limited by the preferred embodiments disclosed above. On the contrary, its purpose is to cover various changes and arrangements with equivalents within the scope of the claims to be applied for by the present invention.
Claims
1. A concealed bolt mechanical door bolt, characterized in that: The invention comprises a concealed latch (1), a movable seat (4) and a fixed seat (3), wherein the concealed latch (1) is connected to the movable seat (4) by a screw (2) and the screw (2) can be changed in length according to demand; slide rails are arranged on the left and right sides of the movable seat (4); the side of the fixed seat (3) is fixedly connected to one end of a third screw (12) and the other end of the third screw (12) is connected to the slide rail (14); an upper limit plate (6) is fixed to the upper back portion of the movable seat (4) by a second screw (11); a lower limit plate (7) is fixed to the lower back portion of the movable seat (4) by a fourth screw (13) and is spaced from the upper limit plate (6); a limit spring (8) is arranged on the upper limit plate (6) and below the second screw (11); a shifting rod (5) is arranged at the middle position of the fixed seat (3) by a spring pin (9) and the upper end of the shifting rod (5) is connected to the upper limit plate (6).
2. A concealed bolt mechanical door bolt according to claim 1, characterized in that: At least two slide rails (14) are respectively provided on the left and right side surfaces of the movable seat (4), and at least two third screws (12) are connected to each side surface of the fixed seat (3).
3. The concealed bolt mechanical door bolt according to claim 1, characterized in that: The first screw (10) fixes the limit spring (8) to the upper limit plate (6) to limit the shifting rod (5).
4. A concealed bolt mechanical door bolt according to any one of claims 1 to 3, characterized in that: Install above the door, below the door, or both above and below the door.