A multi-sealed vehicle safety door and its manufacturing process

Abstract

The present invention provides a multi-seal vehicle safety door, comprising a door frame having a predetermined curvature and a door leaf; the door frame is formed by mitre-jointing four integrally formed first frame profiles having a predetermined length and deflection; the frame profiles are bent along their lengths at one end facing the interior of the door frame and provided with at least two stepped portions; the stepped portions of two opposing first frame profiles are oriented toward each other, and sealing strips are provided at right angles to the stepped portions; the door leaf comprises a leaf frame and a panel; the leaf frame is formed by mitre-jointing four integrally formed second frame profiles having a predetermined length and deflection; the second frame profiles have a shaped tube and a baffle portion for engaging with the stepped portion openings; the baffle portions of the two opposing second frame profiles extend away from each other to close the gap between the door frame and the leaf frame. The present invention has the advantages of simplifying the assembly process, improving production efficiency, and providing excellent sealing performance.

Description

Technical Field

[0001] The invention relates to a multi-sealed vehicle safety door and a manufacturing process thereof. Background Art

[0002] As people's requirements for bus safety and passenger safety continue to increase, the demand for buses to add safety doors is becoming more and more common. As a means of escape in an emergency, bus safety doors must have very high strength and opening reliability. However, the structure and installation methods of curved safety doors in the existing technology have the following problems:

[0003] (1) The main structure of the safety door is composed of a door frame and a door leaf. Currently, the profiles of the door frame and door leaf are mostly formed by manual processes such as bending, welding, and gluing of square tubes and iron sheets. The process is cumbersome, the production cost is high, and the appearance is uneven.

[0004] (2) The safety door is not sealed enough and water leakage is common.

[0005] In view of this, the inventor specially designed a multi-sealed vehicle safety door and its manufacturing process, which resulted in this case. Summary of the Invention

[0006] In order to solve the above problems, the technical solutions of the present invention are as follows:

[0007] A multi-sealed vehicle safety door is installed on a vehicle body and includes a door frame with a predetermined curvature and a door leaf, the door leaf is hinged to the door frame and is used to close the door frame; the door frame is formed by obliquely joining four integrally formed first frame profiles with a predetermined length and deflection, and the frame profile is bent along its length direction at one end facing the interior of the door frame to provide at least two step portions, the step portion openings of the two oppositely arranged first frame profiles are facing in directions approaching each other, and sealing strips are provided at right angles to the step portion openings; the door leaf includes a sash frame and a panel, the sash frame is formed by obliquely joining four integrally formed second frame profiles with a predetermined length and deflection, the second frame profile has a shaped tube and a baffle portion for engaging with the step portion opening, and the baffle portions of the two oppositely arranged second frame profiles extend in directions away from each other to close the gap between the door frame and the sash frame.

[0008] Preferably, the first frame profile located at one end in the length direction of the door frame is provided with two hinge grooves along the height direction, and hinge components connected to the door leaf are provided in the hinge grooves.

[0009] Preferably, the hinge assembly has a pin seat, which is bent in a plate shape as a whole, and has a recessed middle portion to form a clearance groove, and mounting seats fixed to the first frame profile are provided at both ends. At least one pin shaft is provided between the two side walls of the clearance groove, and a rotating block that cooperates with the pin shaft is provided on the door leaf.

[0010] Preferably, the first frame profile opposite to the hinge groove is recessed with a lock rod groove, a lock rod assembly is provided inside the lock rod groove, a lock buckle that cooperates with the lock rod assembly is provided inside the second frame profile, and an inspection cover is provided at the position corresponding to the lock buckle.

[0011] Preferably, the first frame profiles located at both ends of the door frame in the length direction are provided with sealing pieces near the bottom thereof.

[0012] A manufacturing process for a multi-seal vehicle safety door comprises the following steps:

[0013] Step 1: Door frame processing:

[0014] Step 1.1: The first frame profile is sequentially subjected to the processes of integral molding, cutting and polishing, bending and correction, beveling, and opening hinge grooves or locking rod grooves to complete the production of a single first frame profile;

[0015] Step 1.2: Several first frame profiles are first positioned and welded into a door frame, and then the door frame is produced by the following processes: locking hinge assembly, locking lock rod assembly, polishing, and door frame gluing;

[0016] Step 2: Door leaf processing:

[0017] Step 2.1: The second frame profile is sequentially subjected to the processes of integral molding, cutting and polishing, bending and correcting the second frame profile, beveling, machining holes, embedding plates or pulling rivet nuts, thereby completing the production of a single second frame profile;

[0018] Step 2.2: First, several second frame profiles are positioned and welded to form a sash frame. Then, the sash frame is welded to the frame, the frame weld points are polished, the panels are glued and mounted, the decorative strips are welded, the door leaf is polished, and the door leaf is glued to complete the door leaf production.

[0019] Step 3: Assemble and debug the door frame and door leaf.

[0020] Preferably, the bending correction process in step 1.1 or 2.1 is provided with a calibration tool, which includes a base and several automatic detection devices arranged side by side on the base. The automatic detection device includes a detection board and a detection circuit. The detection board has a detection arc surface for detecting the deflection of the first frame profile or the second frame profile.

[0021] Preferably, the detection circuit includes at least three detection points, a power supply and a status display light arranged on the working surface of the detection arc surface, two of which are an electrical input point and an electrical output point, and the other detection points are detection switches.

[0022] The present invention has a door frame and a door leaf. The door frame is formed by obliquely connecting four integrally formed first frame profiles. The leaf frame of the door leaf is formed by four integrally formed second frame profiles. The first frame profile is bent to have at least two step portions, and a sealing strip is affixed to the right angle of the step portion. The second frame profile has a shaped tube that is embedded with the step portion. The integrally formed first frame profile and the second frame profile simplify the work process and improve production efficiency. The embedding of the two effectively improves the sealing performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The drawings described herein are used to provide further understanding of the present invention and constitute a part of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations on the present invention.

[0024] in:

[0025] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0026] Figure 2 It is a schematic structural diagram of the door frame highlighted by the present invention;

[0027] Figure 3 This is a structural diagram highlighting the first frame profile of the present invention;

[0028] Figure 4 yes Figure 3 Schematic diagram of the cross-sectional structure of the middle AA area;

[0029] Figure 5 It is a structural schematic diagram of the present invention highlighting the door leaf;

[0030] Figure 6 This is a structural diagram highlighting the second frame profile of the present invention;

[0031] Figure 7 yes Figure 6 Schematic diagram of the cross-sectional structure of the middle BB area;

[0032] Figure 8 This is a schematic diagram highlighting the hinged structure of the door frame and the door leaf of the present invention, and the first frame profile where the hinge assembly is located is hidden in this figure;

[0033] Figure 9 is a structural schematic diagram highlighting the hinge assembly of the present invention;

[0034] Figure 10 This is a schematic diagram highlighting the structure of the door frame and door leaf locked together according to the present invention, wherein the first frame profile where the locking rod assembly is located is hidden;

[0035] Figure 11 yes Figure 10 Schematic diagram of the enlarged structure of area A in the middle;

[0036] Figure 12 It is a schematic structural diagram of the automatic detection device of the present invention.

[0037] Description of labels:

[0038] 1. Door frame; 11. First frame profile; 12. Step portion; 13. Hinge assembly; 131. Pin seat; 132. Mounting seat; 133. Pin shaft; 14. Lock rod assembly; 15. Sealing piece; 2. Door leaf; 21. Leaf frame; 211. Second frame profile; 212. Shaped tube; 213. Baffle portion; 214. Inspection cover; 22. Panel; 3. Automatic detection device; 31. Detection board; 311. Detection arc surface; 32. Detection circuit; 321. Detection point; 322. Power supply; 323. Display light. DETAILED DESCRIPTION

[0039] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention clearer and more understandable, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0040] See also Figures 1 to 7 , which is a multi-sealed vehicle safety door as the best embodiment of the present invention, is installed on the vehicle body and includes a door frame 1 with a predetermined curvature and a door leaf 2, the door leaf 2 being hinged to the door frame 1 and used to close the door frame 1;

[0041] The door frame 1 is formed by miter-jointing four integrally formed first frame profiles 11 of predetermined length and deflection. One end of the frame profile facing the interior of the door frame 1 is bent along its length to form at least two steps 12. The openings of the steps 12 of the two opposing first frame profiles 11 face toward each other, and sealing strips are provided at right angles to the openings of the steps 12. In this embodiment, two steps 12 are provided.

[0042] The integral forming process of the door frame 1 is to place a metal plate into a press-bending machine, press out a step portion 12, and then press one free end of the bent metal plate with the other free end by folding to form another step portion 12. The metal plate is enclosed by bending and pressing to form a whole with a predetermined cross-section.

[0043] The door leaf 2 includes a leaf frame 21 and a panel 22. The leaf frame 21 is formed by beveling a number of second frame profiles 211 that are integrally formed by die-casting and have a predetermined length and deflection. The second frame profile 211 has a shaped tube 212 and a baffle portion 213 for engaging with the opening of the step portion 12. The baffle portions 213 of the two oppositely arranged second frame profiles 211 extend in directions away from each other to close the gap between the door frame 1 and the leaf frame 21. Water holes are provided at both ends of the bottom surface of the second frame profile 211 located at the bottom of the leaf frame 21.

[0044] The integral molding process of the fan frame 21 is to inject molten liquid metal into a mold and form the integral body by die casting;

[0045] like Figure 8 As shown, the first frame profile 11 located at one end in the length direction of the door frame 1 is provided with two hinge grooves along the height direction, and the hinge components 13 connected to the door leaf 2 are arranged in the hinge grooves.

[0046] like Figure 9 As shown, the hinge assembly 13 has a pin seat 131, the pin seat 131 is bent in a plate shape as a whole, and the middle part is recessed to form a clearance groove, and a first waist hole is provided at both ends for easy position adjustment, and the first waist hole is connected to a mounting seat 132 fixed to the first frame profile 11 through bolts and nuts, and at least one pin shaft 133 is provided between the two side walls of the clearance groove, and a rotating block cooperating with the pin shaft 133 is provided on the door leaf 2. The mounting seat 132 is U-shaped as a whole, the bottom plate of the U-shape is fixedly connected to the pin seat 131, one side wall of the U-shape is embedded in the hinge groove, and the other side wall of the U-shape is arranged toward the hinge assembly 13.

[0047] like Figure 10-11 As shown, the first frame profile 11 opposite to the hinge groove is recessed with a locking rod groove, and a locking rod assembly 14 is arranged inside the locking rod groove. Specifically, the locking rod assembly 14 includes an I-shaped fixed seat, an adjustment seat sliding in the length direction of the fixed seat, and a locking rod sliding in the width direction of the fixed seat. Both ends of the adjustment seat are provided with a second waist hole opened along the sliding direction for easy adjustment, and both ends of the locking rod are provided with a third waist hole along the sliding direction. A lock buckle that cooperates with the locking rod assembly 14 is provided in the second frame profile 211, and an inspection cover 214 is threadedly connected to the position corresponding to the lock buckle. The lock buckle can be easily maintained by disassembling and assembling the inspection cover 214.

[0048] like Figure 10-11 As shown, the first frame profiles 11 located at both ends of the door frame 1 in the length direction are provided with sealing pieces 15 near their bottoms. Specifically, the sealing piece 15 on the hinge groove side is located at the connection between the two first frame profiles 11 and is flush with the top of the first frame profile 11 located at the bottom. The sealing piece 15 on the lock rod groove side is located below the lock rod assembly 14 near the bottom of the door frame 1. The sealing piece 15 is embedded in the groove for waterproofing.

[0049] A manufacturing process for a multi-seal vehicle safety door comprises the following steps:

[0050] Step 1: Door frame 1 processing:

[0051] Step 1.1: The first frame profile 11 is sequentially subjected to the steps of integral molding, cutting and polishing, bending and correction, beveling, and opening hinge grooves or locking rod grooves to complete the production of a single first frame profile 11;

[0052] Step 1.2: A plurality of first frame profiles 11 are first positioned and welded to form a door frame 1, and then sequentially undergo the steps of locking the hinge assembly 13, locking the lock rod assembly 14, polishing, and gluing the door frame 1 to complete the production of the door frame 1;

[0053] Step 2: Door leaf 2 processing:

[0054] Step 2.1: The second frame profile 211 is sequentially subjected to the steps of integral molding, cutting and polishing, bending and correcting the second frame profile 211, beveling, machining holes, embedding plates or pulling rivet nuts, thereby completing the production of a single second frame profile 211;

[0055] Step 2.2: First, several second frame profiles 211 are positioned and welded to form the sash frame 21. Then, the sash frame 21 is welded to the frame, the frame weld points are polished, and the panel 22 is glued and assembled. The decorative strips are welded, the door leaf 2 is polished, and the door leaf 2 is glued to complete the production of the door leaf 2.

[0056] Step 3: Assemble and debug the door frame 1 and door leaf 2.

[0057] like Figure 12 As shown, the stretch-bending correction process in step 1.1 or 2.1 is provided with a calibration fixture, which includes a base and several automatic detection devices 3 arranged side by side on the base. The automatic detection device 3 includes a detection plate 31 and a detection circuit 32. The detection plate 31 is made of plastic steel and has a detection arc surface 311 for detecting the deflection of the first frame profile 11 or the second frame profile 211.

[0058] like Figure 12 As shown, the automatic detection device 3 also includes a detection circuit 32, which includes at least three detection points 321, a power supply 322 and a status display light 323 arranged on the working surface of the detection arc surface 311, two of the detection points 321 are respectively an electrical input point and an electrical output point, and the other detection points 321 are detection switches, which are at least one of the detection photoelectric or button detections. The display status of the display light 323 is used to indicate whether the detection is qualified or not. When the part to be detected is placed on the automatic detection device 3, the electrical input point and the electrical output point are connected through the part to be detected, and then pass through the detection switch and the display light 323 connected in series in the circuit. If the deflection meets the requirements, the switches are in a closed state, making the light green, otherwise the display light 323 is not on.

[0059] Furthermore, the detection part is provided with two detection working arc surfaces, the automatic detection device 3 is arranged on the base through a rotating shaft, and the automatic detection device 3 is engaged through gears. A handwheel is provided at the input end of the gear, and the switching of the detection arc surface 311 is synchronously realized by the handwheel to adapt to different models of parts to be detected.

[0060] The present invention has a door frame 1 and a door leaf 2. The door frame 1 is formed by four integrally formed first frame profiles 11 being obliquely connected. The leaf frame 21 of the door leaf 2 is formed by four integrally formed second frame profiles 211. The first frame profile 11 is bent to have at least two step portions 12, and a sealing strip is affixed to the right angle of the step portion 12. The second frame profile 211 has a shaped tube 212 that is embedded with the step portion 12. The integrally formed first frame profile 11 and the second frame profile 211 simplify the work process and improve production efficiency. The embedding of the two effectively improves the sealing performance.

[0061] In summary, the present invention has an integrally formed first frame profile 11 and a second frame profile 211 , the first frame profile 11 is bent to have a step portion 12 , and the second frame profile 211 is engaged with the step portion 12 , which has the advantages of simplifying the assembly process, improving production efficiency, and having good sealing performance.

[0062] The present invention is described above by way of example in conjunction with the accompanying drawings. It is obvious that the specific implementation of the present invention is not limited to the above-mentioned method. As long as various non-substantial improvements are made using the method concept and technical solution of the present invention, or the concept and technical solution of the present invention are directly applied to other occasions without improvement, they are all within the scope of protection of the present invention.

Claims

1. A multi-seal vehicle safety door, installed on a vehicle body, characterized in that: The door comprises a door frame with a predetermined curvature and a door leaf, wherein the door leaf is hinged to the door frame and is used to close the door frame; The door frame is formed by miter-jointing and assembling four integrally formed first frame profiles with predetermined length and deflection. One end of the frame profile facing the interior of the door frame is bent along its length and provided with at least two steps. The openings of the step portions of the two oppositely arranged first frame profiles face toward each other, and sealing strips are provided at right angles to the openings of the step portions. The door leaf comprises a leaf frame and a panel, wherein the leaf frame is formed by mitering four integrally formed second frame profiles having a predetermined length and deflection, the second frame profiles comprising a shaped tube and a stopper portion for engaging with the step opening, the stopper portions of two oppositely disposed second frame profiles extending in directions away from each other to close the gap between the door frame and the leaf frame; The first frame profile located at one end of the door frame in the length direction is provided with two hinge grooves along the height direction, and the hinge assemblies connected to the door leaf are arranged in the hinge grooves; The hinge assembly has a pin seat, which is bent in a plate shape as a whole, with a recessed middle portion forming a clearance groove and first waist holes at both ends for easy position adjustment. The first waist holes are connected to a mounting seat fixed to the first frame profile through bolts and nuts. At least one pin shaft is provided between the two side walls of the clearance groove, and a rotating block cooperating with the pin shaft is provided on the door leaf. The mounting seat is U-shaped as a whole, with the bottom plate of the U-shape fixedly connected to the pin seat, one side wall of the U-shape engaged with the hinge groove, and the other side wall of the U-shape arranged toward the hinge assembly.

2. A multi-seal vehicle safety door according to claim 1, characterized in that: The first frame profile opposite to the hinge groove is recessed with a lock rod groove, a lock rod assembly is arranged inside the lock rod groove, a lock buckle that cooperates with the lock rod assembly is arranged in the second frame profile, and an inspection cover is arranged at the position corresponding to the lock buckle.

3. The multi-seal vehicle safety door according to claim 1, characterized in that: The first frame profiles located at both ends of the door frame in the length direction are provided with sealing pieces near the bottom thereof.

4. A manufacturing process for a multi-seal vehicle safety door, applied to a multi-seal vehicle safety door according to any one of claims 1 to 3, characterized in that: The following steps are involved: Step 1: Door frame processing: Step 1.1: The first frame profile is sequentially subjected to the processes of integral molding, cutting and polishing, bending and correction, beveling, and opening hinge grooves or locking rod grooves to complete the manufacturing of a single first frame profile; Step 1.2: The first frame profiles are first welded into a door frame, and then the door frame is manufactured by sequentially locking the hinge assembly, locking the lock rod assembly, polishing, door frame gluing, and sealing stripping. Step 2: Door leaf processing: Step 2.1: The second frame profile is sequentially subjected to the steps of integral molding, cutting and polishing, bending and correcting the second frame profile, beveling, machining holes, embedding plates or pulling rivet nuts, thereby completing the manufacture of a single second frame profile; Step 2.2: First, the second frame profiles are tack-welded to form a sash frame. The sash frame is then welded to the frame, the frame welds are polished, the panels are glued and mounted, decorative strips are welded, the door leaf is polished, and the door leaf is glued to complete the manufacturing of the door leaf. Step 3: Assemble and debug the door frame and door leaf.

5. The manufacturing process of a multi-seal vehicle safety door according to claim 4, characterized in that: The bending correction process in step 1.1 or 2.1 is provided with a calibration fixture, which includes a base and several automatic detection devices arranged side by side on the base. The automatic detection device includes a detection board and a detection circuit. The detection board has a detection arc surface for detecting the deflection of the first frame profile or the second frame profile.

6. The manufacturing process of a multi-seal vehicle safety door according to claim 5, characterized in that: The detection circuit includes at least three detection points, a power supply and a status display light arranged on the working surface of the detection arc surface, two of which are respectively an electrical input point and an electrical output point that are mutually conductive through the first frame profile or the second frame profile, and the other detection points are detection switches.

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