Limiting hinge for vehicle compartment door

Abstract

The invention discloses a vehicle compartment door limiting hinge which comprises a first hinge piece, a second hinge piece, a hinge pin, a plurality of gaskets, an elastic pin assembly and a locking plate. The elastic pin assembly comprises an upper support, a lower support, a pin body, a compression spring, a locking sleeve and a limiting nut, the upper support and the lower support are perpendicularly fixed to the position, close to the hinge pin, of the second hinge piece, and the locking sleeve is fixed in the upper support and the lower support. The pin body penetrates through the locking sleeve, and the two ends of the compression spring abut against a stepped hole of the locking sleeve and the middle of the pin body respectively. The locking plate perpendicular to the hinge pin is fixed to the position, close to the hinge pin, of the first hinge piece, and when the compartment door is opened, one end of the pin body automatically stretches into a locking hole of the locking plate, so that the vehicle compartment door is locked in the locking plate opening state. According to the invention, integration of the hinge and the limiter is realized. The structure is compact, operation is easy and convenient, manufacturing and mounting are convenient, the manufacturing and mounting cost of the compartment door is reduced, mounting efficiency is improved, and the opening and closing reliability of the compartment door is remarkably improved.

Description

Technical Field

[0001] The invention relates to a door hinge, in particular to a compartment door hinge with a limiting function, belonging to the technical field of vehicle accessories. Background Art

[0002] At present, domestic short- and medium-distance logistics transportation mainly relies on road transportation, and road transportation mainly uses vans as carriers. There are single doors on the left and right sides of the van body or double doors on the rear side. This type of compartment door has the following problems:

[0003] Since the carriage door does not have a limit function after opening, it often happens that the opened carriage door is closed by strong wind or the carriage door is automatically closed when the parking is unstable, which poses a serious safety hazard. For this reason, some carriage doors have been equipped with door limiters, but the existing door limiters can only limit the door after the door is fully opened, and cannot limit the door opened to a certain angle; some door limiters are made of a combination of steel plates and bent steel pipes. Such door limiters are bulky and inconvenient to use.

[0004] The utility model patent with the application date of May 5, 2008 and the patent number of ZL200820035442.X entitled "A Door Stopper" discloses a door stopper, which includes a fixed support, a fixed shaft pin, a curved rod, a sliding seat, and a movable shaft pin. The upper and lower vertical edges of the upper vertical edge of the sliding seat are respectively provided with an upper long groove and a lower long groove parallel to the bottom edge of the sliding seat, and the other end of the curved rod is movably connected to the upper and lower long grooves of the sliding seat through a movable shaft pin. The advantage of this door stopper is that it can position and lock the open door at different angles, but it needs to manually loosen the nut before closing the door, and after installation, it affects the net passing size of the door. In addition, the size of the stopper of this structure is relatively large. Summary of the invention

[0005] In order to overcome the shortcomings of existing door limiters of vans, such as large size and the need for manual unlocking before closing the door, the present invention proposes a vehicle compartment door limit hinge, which integrates the limit function and the hinge function. The compartment door can be automatically positioned after opening and is very convenient to unlock before closing the door.

[0006] The present invention is achieved through the following technical solutions.

[0007] A vehicle compartment door limit hinge comprises a first hinge piece, a second hinge piece, a hinge pin, several washers, an elastic pin assembly and a locking plate, wherein the first hinge piece is a fixed hinge piece fixed to the compartment door frame, and the second hinge piece is a flip hinge piece fixed to one end of the compartment door; the adjacent sides of the first hinge piece and the second hinge piece are respectively provided with several first hinge blocks and second hinge blocks plugged into each other at intervals, the washers are respectively embedded between the adjacent surfaces of the first hinge blocks and the second hinge blocks, and are hinged by a hinge pin that crosses each first hinge block, each second hinge block and each washer; the elastic pin assembly is parallel to the hinge pin, is arranged on the second hinge piece and close to the hinge pin, and the elastic pin assembly It includes an upper bracket, a lower bracket, a pin body, a compression spring, a locking sleeve and a limit nut. The upper bracket and the lower bracket are arranged at intervals and are vertically fixed at the second hinge piece near the hinge pin. One end of the locking sleeve is supported in the upper end of the upper bracket, and the threaded shaft at the other end of the locking sleeve is positioned in the upper end of the lower bracket and is clamped and fixed to the lower bracket by the limit nut; the pin body passes through the locking sleeve, and the two ends of the compression spring respectively abut against the stepped hole of the locking sleeve and the middle part of the pin body; the locking plate is perpendicular to the hinge pin, fixed at the first hinge piece near the hinge pin, and a locking hole is provided on the upper end of the locking plate; when the compartment door is flipped open with the second hinge piece around the axis of the hinge pin, one end of the pin body extends into the locking hole to lock the vehicle compartment door in an open state.

[0008] The purpose of the present invention can be further achieved by the following technical measures.

[0009] Furthermore, the locking sleeve is a stepped shaft sleeve, and the pin body is a stepped shaft structure with large ends and a small middle. The two ends of the pin body are gap-matched with the corresponding hole sections of the stepped hole of the locking sleeve, and the compression spring is located in the middle of the stepped shaft; the distance C from the center line of the locking hole to the center line of the hinge pin is equal to the distance D from the center line of the hinge pin to the center line of the pin body; and a guide cone surface is provided on the locking plate facing the hinge pin.

[0010] Furthermore, the pin body includes a first pin section and a second pin section, one end of the first pin section radially extends out of the handle plate, and the other end of the first pin section is gap-matched with the large end hole at one end of the locking sleeve step hole; the second pin section is also a stepped shaft, the small end of the first pin section and the small end shaft end of the second pin section are fixedly connected by threads, a compression spring is sleeved on the small end shaft of the second pin section, the end face of the small end shaft of the second pin section is a spherical surface, and the spherical surface extends out of the locking sleeve step hole.

[0011] Furthermore, the locking plate has a guide cone surface on the side facing the hinge pin. The guide cone angle β of the locking plate is 46° to 50°; the center height H1 of the locking hole is equal to the center height H2 of the pin body, and the gap between the outer diameter of the pin body and the diameter of the locking hole is 0.8 to 1.2 mm; when the compartment door is opened and limited, the ratio of the depth L of the pin body extending into the locking hole to the thickness B of the locking plate is: L / B = 0.75 to 0.85.

[0012] Furthermore, an oil cup is provided at one end of the hinge pin, a central lubricating oil blind hole is provided at the axial center of the hinge pin and one end of the central lubricating oil blind hole is communicated with the oil cup hole, and the middle parts of several radial lubricating oil holes are vertically connected to the axial central lubricating oil blind hole, and the radial lubricating oil holes correspond to the positions of the inner holes of the gasket respectively, and two oil storage grooves are radially evenly distributed at the other end of the hinge pin, and the two ends of the radial lubricating oil holes are vertically connected to the oil storage grooves respectively.

[0013] Furthermore, the gasket is made of polytetrafluoroethylene.

[0014] The present invention has both hinge and limit functions. The compartment door is automatically locked after opening and the compartment door is accurately and reliably positioned. The locking plate and the elastic pin assembly are respectively arranged on the first hinge piece and the second hinge piece, thereby realizing the integration of the hinge and the limiter. The structure is compact and the operation is simple. The manufacturing and installation are convenient, the manufacturing and installation costs of the compartment door are reduced, the installation efficiency is improved, and the reliability of the opening and closing of the compartment door is significantly improved.

[0015] Advantages and features of the present invention will be illustrated and explained by the following non-limiting description of preferred embodiments thereof, which are given by way of example only with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a front view of the present invention;

[0017] Figure 2 yes Figure 1 Left view of

[0018] Figure 3 It is a cross-sectional view of the pin body. DETAILED DESCRIPTION

[0019] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0020] In the description of the present invention, terms such as "center", "up", "down", "left", and "right" indicating orientation or positional relationships are based on the orientation or positional relationships shown in the drawings, and do not indicate or imply that the device referred to must have a specific orientation.

[0021] like Figure 1 and Figure 2As shown, the present invention includes a first hinge piece 1, a second hinge piece 2, a hinge pin 3, 6 washers 4, an elastic pin assembly 5 and a locking plate 6. The first hinge piece 1 is a fixed hinge piece fixed on the door frame of the compartment, and the second hinge piece 2 is a flip hinge piece fixed on one end of the compartment door. The adjacent sides of the first hinge piece 1 and the second hinge piece 2 are respectively arranged with a first hinge block 11 and a second hinge block 21 inserted into each other, and the washers 4 made of polytetrafluoroethylene are respectively embedded between the adjacent surfaces of the first hinge block 11 and the second hinge block 21, so that the opening and closing resistance of the compartment door is smaller. The first hinge piece 1 and the second hinge piece 2 are hinged by a hinge pin 3 that crosses each first hinge block 11, each second hinge block 21 and each washer 4.

[0022] The elastic pin assembly 5 is parallel to the hinge pin 3, and is arranged on the second hinge piece 2 and near the hinge pin 3. It includes an upper bracket 51, a lower bracket 52, a pin body 53, a compression spring 54, a locking sleeve 55 and a limiting nut 56. The upper bracket 51 and the lower bracket 52 are arranged at intervals and are vertically welded and fixed to the second hinge piece 2 near the hinge pin 3. The upper end of the locking sleeve 55 is supported in the upper end of the upper bracket 51, and the threaded shaft 551 at the lower end of the locking sleeve 55 is positioned in the upper end of the lower bracket 52 and is clamped and fixed on the lower bracket 52 by the limiting nut 56. The pin body 53 passes through the locking sleeve 55, and the two ends of the compression spring 54 are respectively against the locking sleeve stepped hole 552 and the middle of the pin body 53.

[0023] The locking plate 6 is perpendicular to the hinge pin 3 and is welded and fixed to the first hinge piece 1 near the hinge pin 3. A locking hole 61 is provided at the upper end of the locking plate 6. When the vehicle door is opened as the second hinge piece 2 flips around the axis of the hinge pin 3, the lower end of the pin body 53 extends into the locking hole 61 to lock the vehicle door in the open state.

[0024] The locking sleeve 55 is a stepped shaft sleeve, and the pin body 53 is a stepped shaft structure with large ends and a small middle. The two ends of the pin body 53 are in clearance with the corresponding hole sections of the locking sleeve stepped hole 552, and the compression spring 54 is located in the middle of the stepped shaft. The distance C from the center line of the locking hole 61 to the center line of the hinge pin 3 is equal to the distance D from the center line of the hinge pin 3 to the center line of the pin body 53. And the center height H1 of the locking hole is equal to the center height H2 of the pin body. Such a structure allows the pin body 53 to accurately extend into the locking hole 61 when the compartment door is opened, locking the compartment door in the open state, and improving the reliability of the compartment door opening limit.

[0025] In order to facilitate the assembly of the compression spring 54, the pin body 53 is a stepped shaft assembly structure with large ends and a small middle. The pin body 53 includes a first pin segment 531 and a second pin segment 532. The upper end of the first pin segment 531 radially extends out of a handle plate 5311, and the upper end of the first pin segment 531 is in clearance with the large end hole of the upper end of the locking sleeve stepped hole 552. The second pin segment 532 is also a stepped shaft. The small end of the first pin segment 531 and the end of the second pin segment small end shaft 5321 are fixedly connected by threads. The compression spring 54 is sleeved on the second pin segment small end shaft 5321. The end face of the second pin segment small end shaft 5321 is a spherical surface, and the spherical surface extends out of the locking sleeve stepped hole 552.

[0026] In order to guide the head of the pin body 53 to smoothly enter the locking hole 61, the locking plate 6 is provided with a guide cone 62 on the side facing the hinge pin 3. The guide cone angle β of the locking plate 6 in this embodiment is 48°, and the gap between the outer diameter of the pin body 3 and the hole diameter of the locking hole 61 is 1.0 mm, which facilitates the end of the pin body 3 to enter and exit the locking hole 61. When the compartment door is opened and limited, the ratio of the depth L of the pin body 3 extending into the locking hole to the thickness B of the locking plate is: L / B=0.8, ensuring that the compartment door is reliably locked in the open state.

[0027] Figure 2 The figure shows a schematic diagram of the limit position when the compartment door is opened after installation of the present invention. The vertical double-dash line side is the installation reference plane of the present invention, so as to realize the opening, locking and closing of the compartment door, which is beneficial to the transportation and loading and unloading of the van.

[0028] like Figure 3 As shown, in order to prevent the hinge pin 3 from rusting due to long-term exposure to the outside, which may cause the door to get stuck when opening and closing, a lubricating oil circuit is provided in the hinge pin 3, including an oil cup 31 provided at one end of the hinge pin 3, a central lubricating oil blind hole 32 with one end communicating with the oil cup hole 311 provided at the axial center of the hinge pin, and the middle parts of the six radial lubricating oil holes 33 arranged at intervals are respectively vertically connected to the axial central lubricating oil blind hole 32, and the radial lubricating oil holes 33 correspond to the inner hole positions of the gasket 4 respectively, and two oil storage grooves 34 are evenly distributed radially at the other end of the hinge pin 3, and the two ends of the radial lubricating oil holes 33 are respectively vertically connected to the oil storage grooves 34.

[0029] Apply a door-opening torque to the compartment door to open it, and the second hinge piece 2 and the compartment door rotate counterclockwise around the axis of the hinge pin 3. Since the spherical surface of one end of the pin body 53 first contacts the guide cone 62 of the locking plate 6, the pin body 53 overcomes the elastic force of the compression spring 52 and moves upward under the push of the guide cone 62. As the compartment door is further opened, the lower end of the pin body 53 moves along the guide cone 62 until the lower end of the pin body 53 automatically falls into the locking hole 61 of the locking plate 56 under the elastic reset force of the compression spring 52. Figure 2 As shown, the compartment door is locked in the open position α>90°.

[0030] When closing the door, first hold the handle plate 5311 of the locker 5 and gently pull up the pin body 53, and the pin body 53 overcomes the elastic force of the compression spring 52 and moves upward until the lower end of the pin body 53 is separated from the locking hole 61 of the locking plate 6, and the door is unlocked, and the door can be closed. Two or three of the present invention can be installed according to the size and weight of the door.

[0031] The present invention can be made of common steel material and then be anti-corrosion treated, or can be made of stainless steel material. Figure 2 The present invention is shown as a right-opening door hinge, in which case the elastic pin assembly 5 moves while the locking plate 6 is stationary; the present invention can also be used as a left-opening door hinge, in which case the locking plate 6 moves while the locker 5 is stationary. In addition to being applied to vehicle compartment doors, the present invention can also be applied to the opening and closing of other doors that require the use of a heavier weight.

[0032] In addition to the above embodiments, the present invention may also have other implementation modes. Any technical solutions formed by equivalent replacement or equivalent transformation shall fall within the protection scope required by the present invention.

Claims

1. A vehicle compartment door limit hinge, comprising a first hinge piece, a second hinge piece, a hinge pin and a plurality of washers, wherein the first hinge piece is a fixed hinge piece fixed to the compartment door frame, and the second hinge piece is a flip hinge piece fixed to one end of the compartment door; adjacent sides of the first hinge piece and the second hinge piece are respectively provided with a plurality of first hinge blocks and second hinge blocks plugged into each other, and the washers are respectively embedded between adjacent surfaces of the first hinge blocks and the second hinge blocks, and are hinged by a hinge pin that crosses each first hinge block, each second hinge block and each washer; characterized in that: It also includes an elastic pin assembly and a locking plate. The elastic pin assembly parallel to the hinge pin is arranged on the second hinge piece and close to the hinge pin. The elastic pin assembly includes an upper bracket, a lower bracket, a pin body, a compression spring, a locking sleeve and a limiting nut. The upper bracket and the lower bracket arranged at intervals are vertically fixed to the second hinge piece close to the hinge pin. One end of the locking sleeve is supported in the upper end of the upper bracket, and the threaded shaft at the other end of the locking sleeve is positioned in the upper end of the lower bracket and is clamped and fixed to the lower bracket by the limiting nut; the pin body passes through the locking sleeve, and the two ends of the compression spring respectively abut against the stepped hole of the locking sleeve and the middle part of the pin body; the locking plate is perpendicular to the hinge pin, fixed to the first hinge piece close to the hinge pin, and a locking hole is provided on the upper end of the locking plate; when the compartment door is flipped open with the second hinge piece around the axis of the hinge pin, one end of the pin body extends into the locking hole to lock the vehicle compartment door in an open state.

2. The vehicle compartment door limit hinge according to claim 1, characterized in that: The locking sleeve is a stepped shaft sleeve, and the pin body is a stepped shaft structure with large ends and a small middle. The two ends of the pin body are gap-matched with the corresponding hole sections of the stepped hole of the locking sleeve, and the compression spring is located in the middle of the stepped shaft; the distance C from the center line of the locking hole to the center line of the hinge pin is equal to the distance D from the center line of the hinge pin to the center line of the pin body; a guide cone surface is provided on the locking plate facing the hinge pin.

3. The vehicle compartment door limit hinge according to claim 1, characterized in that: The pin body includes a first pin section and a second pin section, one end of the first pin section radially extends out of the handle plate, and the other end of the first pin section is gap-matched with the large end hole at one end of the locking sleeve stepped hole; the second pin section is also a stepped shaft, the small end of the first pin section and the small end shaft end of the second pin section are fixedly connected by threads, a compression spring is sleeved on the small end shaft of the second pin section, the end face of the small end shaft of the second pin section is a spherical surface, and the spherical surface extends out of the stepped hole of the locking sleeve.

4. The vehicle compartment door limit hinge according to claim 2, characterized in that: The guide cone angle β of the locking plate is 46°~50°, the center height H1 of the locking hole matches the center height H2 of the pin body, and the gap between the outer diameter of the pin body and the diameter of the locking hole is 0.8~1.2mm; when the compartment door is opened and limited, the ratio of the depth L of the pin body extending into the locking hole to the thickness B of the locking plate is: L / B=0.75~0.

85.

5. The vehicle compartment door limit hinge according to claim 1, characterized in that: An oil cup is provided at one end of the hinge pin, a central lubricating oil blind hole whose one end communicates with the oil cup hole is provided at the axial center of the hinge pin, the middle parts of several radial lubricating oil holes arranged at intervals are vertically connected to the axial central lubricating oil blind hole, the radial lubricating oil holes respectively correspond to the positions of the inner holes of the gasket, two oil storage grooves are evenly distributed radially at the other end of the hinge pin, and both ends of the radial lubricating oil holes are respectively vertically connected to the oil storage grooves.

6. The vehicle compartment door limit hinge according to claim 1, characterized in that: The material of the gasket is polytetrafluoroethylene.

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