Heat-preservation free anti-collision door hinge

Abstract

The utility model relates to the technical field of anti-collision door hinges, and discloses a heat preservation free anti-collision door hinge which comprises a base and a main body, the base is fixed on an embedded iron plate in a door frame cavity through bolts, the main body is fixed on a door plate through butt clamp bolts and nuts, a penetrating shaft is vertically arranged on the base in a penetrating mode, and the penetrating shaft is rotationally connected with the base. And a pulling bolt structure is arranged in the main body. The base and the main body which are designed in a split mode are arranged, the base can be fixed on an embedded iron plate in a door frame cavity through bolts, the main body can be fixed on a door plate through butt clamp bolts and nuts, compared with the prior art, when the hinge is installed, expansion bolts do not need to be arranged on the ground, dirt cannot be hidden, and when the hinge is installed, the hinge is convenient to install. The hinge can be directly installed on a door plate and a door frame, installation is convenient, in addition, for a large and heavy door plate, the bearing capacity and resilience force of the hinge can be increased by increasing the number of the hinges, and the use effect is extremely good.

Description

Technical Field

[0001] The utility model relates to the technical field of anti-collision door hinges, in particular to a heat-insulating free anti-collision door hinge. Background Art

[0002] Cold storage doors refer to the doors installed in cold storage equipment, freezing storages and other freezing environment equipment to play a role in heat preservation and airtightness. With the update of freezing and refrigeration technologies, the tentacles of current cold storage projects have reached more fields. The deeper and more the freezing and refrigeration technologies extend into various fields, the number of cold storage demands is increased to a certain extent. The increasing number of cold storages brings about an increasing demand for cold storage panels.

[0003] Currently, most of the existing free anti-collision door hinges are ceiling and floor torsion springs. When installing, the base needs to be fixed on the ground with expansion bolts, which is easy to accumulate dirt and also increases the difficulty of installation and debugging. Content of the Utility Model

[0004] The purpose of the utility model is to solve the problems existing in the prior art, and to provide a heat-insulating free anti-collision door hinge.

[0005] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0006] A heat-insulating free anti-collision door hinge, comprising a base and a main body. The base is fixed on a pre-buried iron plate in the cavity of the door frame with bolts, and the main body is fixed on the door panel with clamping bolts and nuts. A through shaft is vertically arranged through the base, and the through shaft is rotationally connected with the base. A latch structure is arranged inside the main body, and a spring is sleeved outside the latch structure. One end of the latch structure movably penetrates through the main body and is sleeved outside the through shaft, and the other end of the latch structure is provided with a spring limit structure. Two ends of the spring are respectively fixed to the inner side wall of the main body and the spring limit structure.

[0007] Preferably, the latch structure includes a limit sleeve arranged inside the main body, a latch tail end movably arranged inside the sleeve, and a latch front end rotationally connected with the latch tail end through a rivet. One end of the latch front end penetrates through one end of the limit sleeve and is sleeved outside the through shaft and rotationally connected with the through shaft.

[0008] Preferably, an external thread is arranged at one end of the latch far from the latch front end. The spring limit structure includes a gasket sleeved outside the latch front end and a nut screwed to the external thread. One end of the spring is fixedly connected to the inner side of the gasket.

[0009] Preferably, a plurality of limit seats are installed on one side of the main body close to the base, and limit holes adapted to the through shaft are formed in the limit seats.

[0010] Preferably, the surface of the base is provided with fine-tuning screw holes, and a fine-tuning bolt is screwed into the fine-tuning screw holes.

[0011] Preferably, hover limit blocks are installed on both sides of the base, and the angle between the outer side of the hover limit block and the side of the base is adapted to the angle between the limit seat and the side wall of the main body.

[0012] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0013] In the present utility model, by providing a base and a main body that adopt a split design, the base can be fixed to the embedded iron plate in the door frame cavity through bolts, and the main body can be fixed to the door panel through clamping bolts and nuts. Compared with the prior art, when installing this hinge, it is not necessary to drill expansion bolts on the ground, and there will be no dirt accumulation. Moreover, during installation, it can be directly installed on the door panel and the door frame, which is convenient for installation. In addition, for larger and heavier door panels, the bearing capacity and resilience of the hinge can be increased by increasing the number of hinges, and the use effect is excellent. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 FIG. is a schematic diagram of the installation state of a heat-insulating free anti-collision door hinge proposed by the present utility model;

[0015] Figure 2 FIG. is a front view of the rotating state of a heat-insulating free anti-collision door hinge proposed by the present utility model;

[0016] Figure 3 FIG. is a rear view of the rotating state of a heat-insulating free anti-collision door hinge proposed by the present utility model;

[0017] Figure 4 FIG. is a schematic diagram of the closed state of a heat-insulating free anti-collision door hinge proposed by the present utility model;

[0018] Figure 5 FIG. is an exploded view of a heat-insulating free anti-collision door hinge proposed by the present utility model;

[0019] Figure 6 FIG. is a cross-sectional view of the closed state of a heat-insulating free anti-collision door hinge proposed by the present utility model;

[0020] Figure 7 FIG. is a cross-sectional view of the counterclockwise rotating state of a heat-insulating free anti-collision door hinge proposed by the present utility model;

[0021] Figure 8 FIG. is a cross-sectional view of the clockwise rotating state of a heat-insulating free anti-collision door hinge proposed by the present utility model.

[0022] In the figure: 1, base; 2, main body; 3, through-axis; 4, front end of the bolt; 5, tail end of the bolt; 6, spring; 7, embedded iron plate; 8, spring pin; 9, fixing bolt; 10, fine-tuning bolt; 11, clamping bolt; 12, clamping nut; 14, rivet; 15, gasket; 16, nut; 17, door panel; 18, wall panel; 19, door frame; 20, limit sleeve; 21, hovering limit block; 22, limit seat; 23, limit hole. Detailed implementation manner

[0023] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0024] Referring to Figures 1 - 8 , a heat-insulating free anti-collision door hinge includes a base 1 and a main body 2. The base 1 is fixed on an embedded iron plate 7 in the cavity of the door frame 19 by a fixing bolt 9 (the door frame 19 is installed on the wall panel 18), and the main body 2 is fixed on the door panel 17 by a clamping bolt 11 and a clamping nut 12. The base 1 and the main body 2 are rotationally connected through a through-axis 3 (the through-axis 3 vertically and movably penetrates the base 1 and is rotationally installed on the base 1 through a spring pin 8 horizontally inserted into the base 1. A groove is provided at the position of the through-axis 3 corresponding to the spring pin 8, and this part of the through-axis 3 is in the shape of an inverted frustum. When the spring pin 8 is inserted into this position, it can limit the position of the through-axis 3 without affecting the rotation of the through-axis 3). A bolt structure is arranged inside the main body 2, and a spring 6 is sleeved outside the bolt structure. One end of the bolt structure movably penetrates the main body 2 and is sleeved outside the through-axis 3 (several notches are provided on the front surface of the base 1, and one end of the bolt structure is located in the notches). The other end of the bolt structure is provided with a spring limit structure, and the two ends of the spring 6 are respectively fixed to the inner side wall of the main body 2 and the spring limit structure.

[0025] When in use, the device is provided with a base 1 and a main body 2 of a split design. The base 1 can be fixed to the embedded iron plate 7 in the cavity of the door frame 19 by fixing bolts 9, and the main body 2 can be fixed to the door panel 17 by clamping bolts 11 and nuts 16 (the installation and fixation of the base 1 and the main body 2 to the door panel 17 and the door frame 19 can be completed at the factory). When the main body 2 rotates with the door panel 17, the pull bolt will rotate around the through shaft 3 as the center, and the pull bolt will transmit the tension to the spring 6 to generate a rebound force. As the door opening angle gradually increases, the rebound force of the spring 6 also gradually increases. Compared with the existing technology, when installing this hinge, there is no need to drive expansion bolts on the ground, which will not harbor dirt and grime. Moreover, during installation, it can be installed directly on the door panel 17 and the door frame 19, which is easy to install. In addition, for larger and heavier door panels 17 (such as polyurethane insulated free anti-collision doors with larger and heavier door panels 17), the bearing capacity and rebound force of the hinge can be increased by increasing the number of hinges, and the use effect is excellent.

[0026] In this embodiment, the pull bolt structure includes a limiting sleeve 20 arranged inside the main body 2, a pull bolt tail end 5 movably arranged in the sleeve, and a pull bolt front end 4 rotatably connected to the pull bolt tail end 5 through a rivet 14. One end of the pull bolt front end 4 passes through one end of the limiting sleeve 20 and is sleeved on the outside of the through shaft 3 and is rotatably connected to the through shaft 3. The connected pull bolt front end 4 and pull bolt rear end move inside the limiting sleeve 20 to limit the position of the pull bolt front end 4 and the pull bolt rear end.

[0027] In this embodiment, an external thread is provided at the end of the outer end of the pull bolt away from the front end 4 of the pull bolt. The spring limiting structure includes a gasket 15 sleeved on the outside of the front end 4 of the pull bolt and a nut 16 screwed to the external thread. One end of the spring 6 is fixedly connected to the inner side of the gasket 15, so that the compression amount of the spring 6 can be adjusted by adjusting the position of the nut 16.

[0028] In this embodiment, a plurality of limit seats 22 are installed on the side of the main body 2 close to the base 1, and a limit hole 23 adapted for the through shaft 3 is opened on the limit seat 22. When the main body 2 rotates 0 degrees relative to the base 1, the through shaft 3 enters the limit hole 23.

[0029] In this embodiment, a fine-tuning screw hole is provided on the surface of the base 1, and a fine-tuning bolt 10 is spirally connected to the inside of the fine-tuning screw hole. The return angle of the hinge can be fine-tuned. The fine-tuning bolt 10 on the side that needs to be adjusted is unscrewed, and the fine-tuning bolt 10 will support the main body 2 and act as a limiter, so that the main body 2 cannot return to its initial position.

[0030] In this embodiment, both sides of the base 1 are equipped with hovering limit blocks 21, and the outer sides of the hovering limit blocks 21 are aligned with the side surfaces of the base 1 (i.e., Figure 4The included angle between the side corresponding to the side of the main body 2 shown and the included angle between the limit seat 22 and the side wall of the main body 2 are adapted. For example, the included angle is set to 93 degrees. When the main body 2 rotates to ±93 degrees, the side surface of the main body 2 will fit with the hovering limit block 21 on the side surface of the base 1 under the action of the spring 6. At this time, the main body 2 has no space to continue rotating and cannot rotate back, reaching the hovering state.

[0031] The above is only the preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution of the present invention and its inventive concept, makes equivalent substitutions or changes, and should be covered within the protection scope of the present invention.

Claims

1. A heat-insulating and freely anti-collision door hinge, comprising a base and a main body, the base is installed on the door frame, and the main body is installed on the door panel, characterized in that: A through-shaft is vertically provided through the base, and the through-shaft is rotatably connected to the base. A bolt structure is arranged inside the main body, and a spring is sleeved outside the bolt structure. One end of the bolt structure movably penetrates through the main body and is sleeved outside the through-shaft. The other end of the bolt structure is provided with a spring limit structure, and the two ends of the spring are respectively fixedly connected to the inner side wall of the main body and the spring limit structure.

2. The thermal insulation and free anti-collision door hinge according to claim 1, characterized in that: The bolt structure includes a limit sleeve arranged inside the main body, a bolt tail end movably arranged inside the sleeve, and a bolt front end rotatably connected to the bolt tail end by a rivet. One end of the bolt front end penetrates through one end of the limit sleeve and is sleeved outside the through-shaft, and is rotatably connected to the through-shaft.

3. The thermal insulation free anti-collision door hinge according to claim 2, characterized in that: An external thread is arranged at one end of the bolt away from the bolt front end. The spring limit structure includes a gasket sleeved outside the bolt front end and a nut screwed to the external thread. One end of the spring is fixedly connected to the inner side of the gasket.

4. The heat-insulating free anti-collision door hinge according to claim 2, characterized in that: A plurality of limit seats are installed on one side of the main body close to the base, and limit holes adapted to the through-shaft are provided on the limit seats.

5. A heat-insulating and freely anti-collision door hinge according to claim 1, characterized in that: A fine-tuning screw hole is provided on the surface of the base, and a fine-tuning bolt is helically connected inside the fine-tuning screw hole.

6. The thermal insulation and free anti-collision door hinge according to claim 1, characterized in that: Hover limit blocks are installed on both sides of the base, and the angle between the outer side of the hover limit block and the side surface of the base is adapted to the angle between the limit seat and the side wall of the main body.

Images