Door leaf hinge reinforcing assembly structure
Patent Information
- Application Number
- CN202522109564.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-30
- Publication Date
- 2026-09-25
- Estimated Expiration
- 2035-09-30
AI Technical Summary
[0004]本实用新型的目的在于克服现有钢制门、钢制防火门生产中，采用焊接工艺造成门扇表面存在的表面烫伤、焊点残留、表面凹凸不平等质量缺陷影响铰链的安装，以及铰链安装效率低、人工成本高的问题
1、本实用新型提出的补强件上下端经两次折弯形成支撑部，支撑部与门扇边部内侧面贴合，且贴合后在门扇的安装孔周围形成用于注胶的胶合区，通过胶水黏贴的方式对补强件进行初步固定，然后可通过压铆螺钉与铰链固定连接，避免了高温焊接导致的门扇表面烫伤、焊渣飞溅造成的表面凹凸不平及焊点残留而影响铰链安装的问题，显著提升了铰链的安装稳定性，提高产品质量。
Smart Images
Figure CN224800111U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the technical field of steel door and steel fire door manufacturing, and particularly relates to a door hinge reinforcement assembly structure. Background Technology
[0002] In the production of steel doors and steel fire doors, the connection and fixing of hinges to door panels is one of the key processes. Currently, welding is the most common method used in the market to connect door panel components. However, this process has obvious drawbacks: the high temperature generated during welding can easily cause burns on the surface of the door frame, and uncontrollable factors such as weld spatter can cause unevenness on the product surface, forming defects such as weld points.
[0003] These problems not only reduce the appearance quality of the product, but may also affect the installation of hinges due to welding defects, thereby affecting the structural strength of the door leaf and increasing the defect rate. In addition, the installation process of hinges requires high operating skills and takes a long time, resulting in low efficiency and high labor costs. Utility Model Content
[0004] The purpose of this utility model is to overcome the problems in the production of existing steel doors and steel fire doors, where welding processes result in surface burns, weld residue, uneven surfaces, and other quality defects that affect hinge installation, as well as low hinge installation efficiency and high labor costs.
[0005] This utility model is implemented as follows: a door hinge reinforcement assembly structure includes a door leaf and a reinforcement component; the reinforcement component is made of standard sheet metal parts through sheet metal processing, and its upper and lower ends are bent twice to form a support part. The support part is attached to the inner side of the door frame edge, and after attachment, an adhesive area for glue injection is formed around the mounting hole of the door frame. The reinforcing member has an anti-theft hole in the middle and screw holes located above and below the anti-theft hole. The anti-theft hole is used to install the hinge anti-theft hook, and the screw holes are used to fix it to the hinge with M6 press-fit screws. The reinforcing member has U-shaped bends on both sides to form a fitting part, which fits against the front and rear inner sides of the door frame. The fitting part is provided with positioning holes, which correspond to the positioning grooves on the door leaf and are used for positioning the reinforcing member.
[0006] Preferably, the glue filling the bonding area is used to fix the reinforcing member to the door frame.
[0007] Preferably, the number of positioning holes matches the number of positioning slots on the door frame, and they are set in a one-to-one correspondence.
[0008] Preferably, the number of screw holes is at least two, and they are symmetrically distributed on the upper and lower sides of the anti-theft hole.
[0009] Preferably, the material of the reinforcing member is compatible with the material of the door leaf, and both are made of steel.
[0010] Preferably, the angle of the two bends of the support part is angle α, and angle α is 160-165°.
[0011] Compared with related technologies, the door hinge reinforcement assembly structure provided by this utility model has the following beneficial effects: 1. The reinforcing member proposed in this utility model is bent twice at the top and bottom to form a support part. The support part is attached to the inner side of the door leaf edge. After attachment, an adhesive area for glue injection is formed around the mounting hole of the door leaf. The reinforcing member is initially fixed by adhesive. Then, it can be fixedly connected to the hinge by rivet screws. This avoids the problems of door leaf surface burn caused by high temperature welding, uneven surface caused by welding slag splash, and welding residue that affect hinge installation. It significantly improves the installation stability of the hinge and improves product quality.
[0012] 2. This utility model eliminates the pretreatment before welding, the cleaning of welding slag after welding, and the surface repair process. Moreover, the reinforcing parts are quickly positioned by positioning holes and door leaf positioning grooves, making the assembly operation simple, reducing the skill requirements for workers, reducing the number of process steps, reducing labor input, effectively controlling production costs, significantly shortening the processing cycle, and improving production efficiency. 3. The reinforcing component of this utility model is made of standard sheet metal parts. With the help of adhesive bonding and the support of the U-shaped fitting part, it can provide a stable installation base for the hinge and fully meet the strength requirements of the door leaf. Attached Figure Description
[0013] Figure 1 This is a schematic diagram of the door hinge reinforcement assembly structure proposed in this utility model before installation; Figure 2 This is a schematic diagram of the door hinge reinforcement assembly structure proposed in this utility model after installation. Figure 3 This is a three-dimensional schematic diagram of a door hinge reinforcement assembly structure proposed in this utility model; Figure 4 This is a front view schematic diagram of a door hinge reinforcement assembly structure proposed in this utility model; Figure 5 This is a top view schematic diagram of a door hinge reinforcement assembly structure proposed in this utility model.
[0014] In the diagram: 1. Door leaf; 11. Mounting hole; 12. Positioning groove; 2. Reinforcing member; 21. Screw hole; 22. Positioning hole; 23. Anti-theft hole; 24. Support part; 25. Adhesive part; 26. Glue area. Detailed Implementation
[0015] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.
[0016] The present invention will be further described below with reference to specific embodiments, such as... Figures 1-5 As shown, the present invention proposes a door hinge reinforcement assembly structure, including a door leaf 1 and a reinforcement member 2, the specific structure of which is as follows: 1. The reinforcing component 2 is made of standard sheet metal parts through sheet metal processing. Its material is compatible with the steel material of the door leaf 1 to ensure the consistency of structural strength.
[0017] 2. The upper and lower ends of the reinforcing member 2 are bent twice to form a support part 24 that fits against the inner side of the door leaf 1. After the support part 24 fits against the inner side of the door leaf 1, an adhesive area 26 is formed between the two at the upper and lower parts of the door leaf 1. By injecting glue into the adhesive area 26, a stable connection between the reinforcing member 2 and the door leaf 1 can be achieved, and the initial fixation of the hinge can be achieved.
[0018] 3. An anti-theft hole 23 is provided in the middle of the reinforcing member 2 for installing a hinge anti-theft hook to improve the anti-theft performance of the door leaf; at least two screw holes 21 are symmetrically provided above and below the anti-theft hole 23, and the screw holes 21 are used to fix the hinge to the reinforcing member 2 by M6 press-fit screws.
[0019] 4. The two sides of the reinforcing component 2 are formed by a U-shaped bending process to form the fitting part 25. The fitting part 25 fits tightly with the front and rear inner sides of the door leaf 1, further improving the assembly stability of the reinforcing component 2 and the door leaf 1. The fitting part 25 is provided with positioning holes 22, which correspond one-to-one with the positioning grooves 12 preset on the door leaf 1. During assembly, the positioning pins and other components are inserted into the positioning holes 22 and positioning grooves 12 to quickly and accurately position the reinforcing component 2, which facilitates subsequent glue injection and hinge installation operations.
[0020] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit the scope of protection of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on these embodiments, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model. Although this utility model has been described in detail with reference to the above embodiments, those skilled in the art can still combine, add, delete, or otherwise adjust the features of the various embodiments of this utility model according to the circumstances without conflict or creative effort, thereby obtaining different technical solutions that do not fundamentally depart from the concept of this utility model. These technical solutions are also within the scope of protection of this utility model.
Claims
1. A door hinge reinforcement assembly structure, characterized in that, It includes a door leaf (1) and a reinforcing member (2); the reinforcing member (2) is made of standard sheet metal parts by sheet metal processing, and its upper and lower ends are bent twice to form a support part (24). The support part (24) is attached to the inner side of the door leaf (1), and after being attached, an adhesive area (26) for injecting glue is formed around the mounting hole (11) of the door leaf (1). The reinforcing member (2) has an anti-theft hole (23) in the middle and screw holes (21) located above and below the anti-theft hole (23). The anti-theft hole (23) is used to install the hinge anti-theft hook, and the screw holes (21) are used to fix it to the hinge by M6 press screws. The reinforcing member (2) has a U-shaped bend on both sides to form a fitting part (25). The fitting part (25) fits against the front and rear inner sides of the door leaf (1). The fitting part (25) has a positioning hole (22). The positioning hole (22) corresponds to the positioning groove (12) on the door leaf (1) and is used for positioning the reinforcing member (2).
2. The door hinge reinforcement assembly structure as described in claim 1, characterized in that, The glue filling the adhesive area (26) is used to fix the reinforcing member (2) to the door leaf (1).
3. The door hinge reinforcement assembly structure as described in claim 1, characterized in that, The number of positioning holes (22) matches the number of positioning slots (12) on the door leaf (1), and they are set in a one-to-one correspondence.
4. The door hinge reinforcement assembly structure as described in claim 1, characterized in that, The number of screw holes (21) is at least two, and they are symmetrically distributed on the upper and lower sides of the anti-theft hole (23).
5. The door hinge reinforcement assembly structure as described in claim 1, characterized in that, The material of the reinforcing member (2) is compatible with the material of the door leaf (1), both being made of steel.
6. The door hinge reinforcement assembly structure as described in claim 1, characterized in that, The support part (24) bends at angles a twice, and angle a is 160-165°.