WO2023234686A1

WO2023234686A1 - Rear opening/closing door hinge device for freight vehicle loading compartment

Info

Publication number: WO2023234686A1
Application number: PCT/KR2023/007409
Authority: WO
Inventors: 황인수; 천종철
Original assignee: 황인수; 천종철
Priority date: 2022-06-03
Filing date: 2023-05-31
Publication date: 2023-12-07
Also published as: KR102492624B1

Abstract

In the present invention, a roller is operated to be hung between a rotating member and a fixed guide member at a predetermined position while the rotating member slidably rotates along the fixed guide member by being linked with the opening/closing of a rear door of a vehicle loading compartment, and thus functions as a stopper so as to stably maintain the door in an open state, thereby enabling multi-stage opening of the loading compartment rear door by means of only a very simple structure.

Description

Rear opening and closing door hinge device of cargo vehicle loading box

The present invention relates to a loading box door of a cargo vehicle, and more specifically, to a rear opening and closing door of a cargo vehicle loading box that can be opened and closed in the longitudinal direction and also in the horizontal direction. It's about the hinge device.

Typically, a vehicle loading box is installed at the rear of a vehicle and used to load and transport cargo in the interior space.

This vehicle storage box is provided with a rear door that opens left and right at the rear to load or unload cargo, and the door is opened to the left or right by a hinge device to load or unload cargo into the cargo box.

The hinge device of the conventional loading box rear opening/closing door is configured to open the door by rotating left and right by coupling a rotating frame coupled to the door to a fixed frame fixed to the loading box with a hinge axis. The door rotates freely, allowing the operator to open the door. There was a problem in that the door could not remain open and rotated even with a small impact from lightly touching the door, greatly reducing workability and safety.

In order to solve these problems of the prior art, a hinge device with a multi-stage open structure that maintains the loading door in a multi-stage open state has been disclosed in many forms, such as in Patent Document 1 (Patent No. 10-1666168).

This conventional hinge device 100 is fixed to the door 3 by a fastening means 130 inserted into the connection hole 114 of the fixed frame 110 fixed to the loading box 2 as shown in FIGS. 1 to 3. The door 3 is rotatably mounted by inserting it into the fixing part 122 of the rotating frame 120, wherein an angle limiting groove corresponding to the rotation angle of the rotating frame 120 is formed radially in the fastening means. The angle adjustment member 140 is axially coupled, and a separate housing 116 is provided on the fixed frame to provide a moving part 152 and a rotating part 154 along with an elastic member 160 in the mounting hole 118 of the housing. The pressing member 150 formed is elastically inserted, so that the angle adjusting member 140 rotates together with the rotating frame 120 when the door 3 is opened and closed, and the rotating part of the pressing member is connected to the angle limiting groove 142a of the angle adjusting member. (154) is inserted and closely adhered to by the elastic member (160) so that the worker maintains the door (3) in a rotational open state.

However, the conventional hinge device 100 described above had the following problems.

First, a housing 116 having a mounting hole 118 is provided on the fixing frame, and a complex assembly structure is formed in which the elastic member 160 and the pressing member 150 are coupled to the mounting hole of the housing to improve assembly workability. There were problems with degradation and increased manufacturing costs.

Second, when the door is rotated, the angle adjustment member is not integrated with the rotating frame but is supported by being axially coupled to a fastening means, which reduces assembly rigidity, and the pressure member and elastic member on the side of the angle adjustment member are attached to the housing. Due to the assembly structure that is inserted into the mounting hole, the diameter of the pressing member is small, and in the case of elastic members, it is difficult to install a large diameter spring with sufficient elastic force, and the elastic force is lost in a short period of time with repeated use, which reduces the durability of the hinge device. There was a problem that greatly reduced it.

Third, when the door is rotated, the pressure member and the elastic member are in elastic close contact on the side of the angle adjustment member, so that the elastic support force acts in the horizontal direction rather than the vertical direction where the load of the door acts, thereby increasing the opening angle of the heavy door. The holding force decreases, and as a result, the operator is unable to stop the door accurately at the next home position of the angle adjustment member and rotates it to a home position that deviates from the next home position, making it very difficult to accurately adjust the opening of the door. there was.

Meanwhile, Patent Document 2 (Korean Patent No. 10-1320990) discloses a door hinge that connects the door and the car body to configure the center of rotation of the door when opening and closing the door, and a device that sets the degree of opening of the door at various angles. A door hinge for an automobile is disclosed that has a door checker attached and functions as a stopper to prevent the door checker from opening beyond a set angle when the door is opened.

Figures 4 and 5 show the door hinge of Patent Document 2, which is rotatably connected to a car body coupling part 200 coupled to the car body and one end of the car body coupling part 200 to attach a door 3 (see Figure 1). ) and a door coupling portion 100 coupled to the vehicle body coupling portion 200. It includes a disk 300 fixed to the vehicle body coupling part 200, and the door coupling part 100 is concentrically coupled to the rotation axis 230 and has a hollow cylindrical shape with a closed upper surface and an open lower surface. A housing 110 is formed, a door coupling plate 120 is formed to be coupled to the door, and a disc-shaped cam is rotated integrally with the housing 110 and is provided to move up and down inside the housing 110. (400), wherein a first through hole 114 is formed on the upper surface of the housing 110 to allow the rotation axis 230 to pass through, and the disk 300 is formed on the inner peripheral surface of the housing 110. It is formed to a certain size, and the open lower surface of the housing 110 is coupled so as to be closed, and the upper surface of the disk 300 is provided to contact the lower surface of the cam 400, and the upper surface of the disk 300 and the A plurality of step grooves 310 and step ridges 320 are provided on the upper surface of the disk 300 in a shape in which valleys and peaks are alternately arranged along the circumference so that the door can be opened and closed in stages according to the shape of the lower surface of the cam 400. A cam protrusion 420 is formed on the lower surface of the cam 400, which is sequentially inserted into the plurality of step grooves 310 as the door coupling part 100 rotates. ) is provided with a protrusion 130, and the vehicle body coupling part 200 is provided with a buffering member 250 at a position where the protrusion 130 contacts, so that the buffering member 250 is connected to the door coupling part 100. ), and when the protrusion 130 and the buffer member 250 come into contact, the door is completely opened, so that the door hinge 10 of the car is similar to the conventional door checker. It is even performing its function.

However, Patent Document 2 above states that when opening a door in a closed state, the disk 300 rotates around the outer circumference of the rotation axis 230 along the door opening, and the step 320 that moves when the disk 300 rotates The cam projection 420 is pushed up in the axial direction (at this time, the spring 30 is compressed), and when the disk 300 continues to rotate further, the cam projection 420 passes over the step 320 and moves to a position directly below it. The moment the adjacent step groove 310 moves to a new location, the cam protrusion 420 descends due to the elastic force of the compressed spring 30 and is accommodated in the step groove 310, thereby changing the first opening position of the door. It is set (the door is maintained in an open state at that position), and the relative structure including the concave-convex combination of the disk 300 and the cam 400 for this is complex, and the direction of elastic force of the spring 30 and the Since the rotation directions of the step ledges 320 are orthogonal to each other, when the disk 300 rotates, the step 320 requires a large contact force and friction with the cam protrusion 420, and at the same time, a spring that applies elastic force in the axial direction The tension of (30) is large, which increases wear and noise generation, and also, when the door is opened, a torsional force acts on the bottom of the compression spring (30) and twists it, so it is supported in close contact with the upper surface of the cam protrusion (420) by the torsional restoring force. Various side effects, such as the generation of friction noise due to the movement of the bottom of the spring 30 back to its original state, are occurring.

[Prior art literature]

(Patent Document 1) Korean Patent No. 10-1666168

(Patent Document 2) Korean Patent No. 10-1320990

Accordingly, the present invention was proposed in consideration of the above points, and provides a cargo vehicle rear door hinge device that operates smoothly in the door rotation direction when the rear door of the vehicle cargo compartment is opened and whose function as a door stop checker is clearly guaranteed with a simple structure. The purpose is to provide

In order to achieve the above object, the present invention provides a fixed bracket member fixed to the vehicle body, a rotating bracket member for door coupling, one side of which is fixed to the loading box door, and the other side of which is rotatably coupled to the fixed bracket member, and In the rear opening and closing door hinge device of a cargo vehicle loading box that includes a door stopper mechanism that restrains an open door to stop at a predetermined position, the fixing bracket member includes upper and lower brackets that protrude at intervals up and down, and the door The stopper mechanism includes upper and lower fixed guide members symmetrically mounted on the inside of the ends of the upper and lower brackets so as to be aligned on a vertical axis at a predetermined upper and lower distance, and a central axis member installed vertically through the upper and lower fixed guide members. , a space formed on the outer circumference of the boss portion that surrounds and supports the outer circumference of the central axis member passing through the upper and lower fixed guide members, and is mounted on the central axis member between the upper and lower fixed guide members to slide and rotate with respect to the upper and lower fixed guide members. A rotating member movably coupled to the upper and lower fixed guide members, and installed in the space, the rotating member and the upper and lower fixed guide at a rotation position at a predetermined angle when the door is opened in a closed state. It moves so as to span the member at the same time and restrains the rotating member from rotating without the action of a predetermined or more external force, thereby restraining the door to remain open. In sections other than the set angle rotation position, the rotating member is in sliding contact with the inner surface of the rotating member. The rotating member includes a checker roller that allows rotation around the central axis member, and an operating body that supports and operates the checker roller, and one end of the rotating bracket member is fixed to the rotating member. It is characterized by

According to a preferred embodiment of the present invention, the upper and lower fixed guide members include a boss portion that surrounds and supports the outer circumference of the penetrating central axis member, and a first ring formed concentrically with a ring-shaped first space portion on the outer circumference of the boss portion. A second ring member is formed concentrically with a second space between the member and the first ring member, and the checker roller is passed through the wall of the first ring member so as to form a right angle to the door in the closed state. It has an opening formed in an allowable size, and the rotating member includes upper and lower protruding ring members that are respectively inserted into the second space portions of the upper and lower fixed guide members and coupled to slide and rotate in an annular manner, and the opening and the predetermined rotation. At least one roller receiving confinement groove is formed on the upper and lower protruding ring members at an angle to accommodate a portion of the body of the checker roller that protrudes through the opening when positioned facing the opening through rotation of the door. It is characterized by being composed of:

According to the present invention, the actuator is accommodated in the first space and includes two supports supporting the inner body of the checker roller on both sides, and the two supports are positioned within the first space so that the two supports are elasticated in a direction closer to each other. By including an elastic body to be disposed, when the opening portion and the roller receiving restraint groove are aligned in a straight line, the outer body of the checker roller passes through the opening portion due to the force of the elastic body pushing the two supports closer to each other. It is characterized in that it protrudes and is accommodated in the roller receiving restraint groove to restrict the rotation of the rotating member.

According to a preferred embodiment of the present invention, one, two, or three roller receiving restraint grooves are formed to lock and restrain the door in an arbitrary open position.

According to a preferred embodiment of the present invention, the two roller receiving restraint grooves are each at 90° positions with respect to the opening portion and are formed on 180° opposite each other, so that the door is opened at 90° and 270° open positions. It is characterized in that it is formed to constrain rotational movement.

According to a preferred embodiment of the present invention, the two roller receiving restraint grooves are positioned at 90° and 180° with respect to the opening portion and are formed to have a phase difference at right angles to each other, so that the door is opened at 90° and 180° open positions. It is characterized in that it is formed to constrain rotational movement.

According to a preferred embodiment of the present invention, the three roller receiving restraint grooves are formed at positions of 90°, 180°, and 270°, respectively, with respect to the opening portion in the door closed state, so that the door is opened at 90°, 180°, and 270°. Characterized in that it is formed to constrain rotational movement in position.

According to the present invention, the elastic body is characterized in that it is a compression coil spring.

In addition, according to the present invention, the roller receiving restraint groove is characterized in that it is formed penetrating the wall surface of the upper and lower protruding ring members.

In addition, according to the present invention, the two supports have curved contact surfaces with the checker roller so that the rotating member gently retracts the checker roller when the rotating member receives a predetermined force in the rotation direction.

In addition, according to the present invention, a washer is provided between the upper and lower fixed guide members and the rotating member.

The present invention is linked to the opening and closing of the rear door of the vehicle cargo compartment, and while the rotating member slides and rotates along the fixed guide member, the roller is operated so that the roller is placed between the rotating member and the fixed guide member at a predetermined designated position, thereby functioning as a stopper to close the door. Since it is stably maintained in the open state, it has the advantage of being able to operate the multi-step opening of the rear door of the loading box with an extremely simple structure.

1 to 5 are diagrams showing the prior art.

Figure 6 is a view showing the rear of a cargo vehicle to which the rear opening and closing door hinge device of the cargo vehicle loading box according to the present invention is applied.

Figure 7 is a perspective view of the rear opening and closing door hinge device of a cargo vehicle loading box according to the present invention.

Figure 8 is a perspective view showing the fixing bracket member of the present invention.

Figure 9 is a front view showing the rotation bracket member of the present invention.

Figure 10 is a front cross-sectional view showing the main part of the rear opening and closing door hinge device of the cargo vehicle loading box according to the present invention.

Figure 11 is a plan view of the hinge device of Figure 10.

Figure 12 is a plan view of the rear opening and closing door hinge device of a cargo vehicle loading box according to the present invention, and is a cross-sectional view showing the door stopper mechanism portion.

Figure 13 is a top view (or bottom view) showing the lower (or upper) fixed guide member according to the present invention.

Figure 14 is a front cross-sectional shape of the upper and lower fixed

guide members

53 and 53 according to the present invention.

Figure 15 is a cross-sectional view taken along line A-A of Figure 13.

Figure 16 is a front cross-sectional view of the rotating member of the present invention.

Figure 17 is a B-B cross-sectional view of the rotating member of the present invention.

Figure 18 is a plan cross-sectional structure of the door stopper mechanism shown by assembling the rotating member and the upper and lower fixed guide members of the present invention.

Figure 19 is a view showing a washer placed between the rotating member and the upper and lower fixed guide members of the present invention.

Figure 20(a)(b) is a diagram showing a checker roller and an actuating body (illustration of the elastic body is omitted).

FIG. 21 is a diagram showing the operating state of the rear opening and closing door hinge device of the cargo vehicle loading box when the door is opened 90° from the closed state of FIG. 12.

FIG. 22 is a diagram showing the operating state of the rear opening/closing door hinge device of the cargo vehicle loading box when the door is fully opened in the open state of FIG. 21.

[Explanation of drawing symbols]

40: Freight vehicle loading box 41: Door

42: door hinge device 43: car body

44: fixed bracket member 45: rotating bracket member

46: Door stopper mechanism 47: Bolt hole

48: upper and lower brackets 49: shaft hole

50: Bolt hole 51: Fixing protrusion

52: central axis member 53: upper and lower fixed guide members

54: Rotating member 55: Checker roller

56: Actuator 57: Boss part

58: first space portion 59: first ring member

60: second space portion 61: second ring member

62: Opening portion 63: Upper and lower protruding ring members

64 (64a, 64b): Roller receiving restraint groove 65: Support body

66: elastic body 67: washer

Below, with reference to the attached drawings, embodiments of the present invention will be described in detail so that those skilled in the art can easily implement the present invention.

However, since the description of the present invention is only an example for structural and functional explanation, the scope of the present invention should not be construed as limited by the embodiments described in the text.

For example, since the embodiments can be variously modified and have various forms, the scope of rights of the present invention should be understood to include equivalents that can realize the technical idea.

In addition, the purpose or effect presented in the present invention does not mean that a specific embodiment must include all or only such effects, so the scope of the present invention should not be understood as limited thereby.

In this specification, the present embodiments are provided to ensure that the disclosure of the present invention is complete and to fully inform those skilled in the art of the scope of the invention. And the present invention is only defined by the scope of the claims.

Accordingly, in some embodiments, well-known components, well-known operations and well-known techniques are not specifically described in order to avoid ambiguous interpretation of the present invention.

Meanwhile, the meaning of the terms described in the present invention is not limited to the dictionary meaning and should be understood as follows.

When a component is referred to as being “connected” to another component, it should be understood that it may be directly connected to the other component, but that other components may also exist in between. On the other hand, when a component is referred to as being “directly connected” to another component, it should be understood that there are no other components in between. Meanwhile, other expressions that describe the relationship between components, such as “between” and “immediately between” or “neighboring to” and “directly adjacent to” should be interpreted similarly.

Singular expressions should be understood to include plural expressions, unless the context clearly indicates otherwise, and terms such as “comprise” or “comprising” refer to the specified features, numbers, steps, operations, components, parts, or It is intended to specify the existence of a combination of these, and should be understood as not excluding in advance the possibility of the existence or addition of one or more other features, numbers, steps, operations, components, parts, or combinations thereof.

All terms used herein, unless otherwise defined, have the same meaning as commonly understood by a person of ordinary skill in the field to which the present invention pertains.

Terms defined in commonly used dictionaries should be interpreted as consistent with the meaning they have in the context of the related technology, and cannot be interpreted as having an ideal or excessively formal meaning unless clearly defined in the present invention.

As used in the detailed description of the invention and the appended claims, “inside (or inside)” means a direction approaching the central axis, and “outside (or outside)” means a direction away from the central axis. , In addition, “upper” and “lower” may refer to the actual installation and use state of the device or the state shown in the drawings, and other directions or orientations, including these directions, are shown in the drawings for clarity. It is depicted as a symbol and is not intended to limit actual devices or systems. The devices and systems described herein can be used in multiple directions and orientations.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. In the description of the embodiments, the same reference numerals are assigned to the same components, and in some cases, descriptions of the same reference numerals are omitted.

Figure 6 is a view showing the rear of a cargo vehicle to which the rear opening and closing door hinge device of the cargo vehicle loading box according to the present invention is applied, and Figure 7 is a perspective view of the rear opening and closing door hinge device of the cargo vehicle loading box according to the present invention. At the rear of the loading box 40, there is a door 41 that opens and closes the loading box on one or both sides, and this door 41 is connected to the rear opening and closing door hinge device 42 (hereinafter referred to as 'door hinge device') of the cargo vehicle loading box. The loading box 40 can be opened or closed by means of the door hinge device 42, which has a fixing bracket member 44 fixed to the car body 43 and one side of which is fixed to the loading box door 41. , the other side guides the rotation of the door coupling rotary bracket member 45 and the rotary bracket member 45, which is rotatably coupled to the fixed bracket member 44, and the open door 41 is positioned at a predetermined position. It includes a door stopper mechanism 46 that restrains it to remain stationary.

Figure 8 is a view showing the fixing bracket member 44 of the present invention. The fixing bracket member 44 is provided with bolt holes 47 for fixing it to the car body 43 with bolts, and is spaced up and down. It is provided with upper and lower brackets 48 that protrude horizontally, and the upper and lower brackets 48 are formed with shaft holes 49 for inserting and fixing the shaft on the vertical axis.

Figure 9 is a view showing the rotation bracket member 45 of the present invention, which has a plurality of bolt holes 50 for fastening to the door 41 with bolts at one end, and a door stopper mechanism at the other end, which will be described in detail later. A fixing protrusion 51 is formed to protrude for fixing to (46). This fixing protrusion 51 is made to rotate integrally with the rotating member 54 by forming a slit hole in the body of the rotating member 54, then fitting and welding it.

Figure 10 is a front cross-sectional view showing the main part of the rear opening and closing door hinge device 42 of the cargo vehicle loading box according to the present invention, and Figure 11 is a plan view showing the rear opening and closing door hinge device of the cargo vehicle loading box according to the present invention. 12 is a flat cross-sectional view of the door stopper mechanism in the top view of the rear opening and closing door hinge device of the cargo vehicle loading box according to the present invention, and the door stopper mechanism 46 is between the upper and lower brackets 48. This door stopper mechanism (46), which has a cylindrical shape, is mounted on the upper and lower brackets (48) by a vertically penetrating central axis member (52).

The door stopper mechanism (46) includes upper and lower fixing guide members (53, 53) fixed symmetrically to each other at a predetermined upper and lower distance so as to be aligned on a vertical axis inside the ends of the upper and lower brackets (48, 48), A central axis member (52) installed to vertically penetrate the upper and lower fixed guide members (53, 53), and a central axis member (52) installed between the upper and lower fixed guide members (53, 53) to form the upper and lower fixed guide members. A rotating member 54 coupled to the upper and lower fixed

guide members

53, 53 to enable slide rotation movement with respect to (53, 53), and the rotating member 54 is connected to the door 41 when the door 41 is closed. When opened, it moves to simultaneously span the rotating member 54 and the upper and lower fixed guide members 53 at a preset rotational position at a predetermined angle, thereby restraining the rotating member 54 from rotating without the action of a predetermined or more external force. The door 41 is constrained to remain open at a position in which it is rotated at a predetermined angle, and in sections other than the set angle rotation position, the door 41 is in sliding contact with the inner surface of the rotating member 54, so that the rotating member 54 is the center. It includes a checker roller 55 that allows rotation around the shaft member 52 and an actuator 56 that supports and operates the checker roller 55.

Figure 13 is a plan view showing the upper and lower fixed

guide members

53 and 53 according to the present invention (a bottom view shape based on the upper fixed guide member, and a top view shape based on the lower fixed guide member), and Figure 14 is a plan view showing the upper and lower fixed

guide members

53 and 53 according to the present invention. This is the front cross-sectional shape of the upper and lower fixed

guide members

53 and 53, and FIG. 15 is a cross-sectional view A-A of FIG. 13.

The upper and lower fixed

guide members

53 and 53 are formed concentrically with a ring-shaped first space portion 58 around the outer circumference of the boss portion 57 that surrounds and supports the outer circumference of the central axis member 52 passing up and down. The first ring member 59 and the second ring member 61 formed concentrically with a ring-shaped second space 60 between the first ring member 59 and the door 41 are in a closed state. An opening 62 is formed on the wall of the first ring member 59 at a right angle to the door 41 and is sized to allow the checker roller 55 to pass through.

Figure 16 is a front cross-sectional view of the rotating member of the present invention, and Figure 17 is a B-B plan cross-sectional view of the rotating member of the present invention, wherein the rotating member 54 is the second space 60 of the upper and lower fixed guide members 53. ) and the upper and lower protruding ring members 63 that are respectively fitted and coupled to each other and the opening portion 62 at a predetermined rotation angle and are formed on the upper and lower protruding ring members 63 in the circumferential direction to form the door 41. ) is located on a coaxial line in the horizontal plane with the opening portion 62 through rotational opening and closing of ) and accommodates a part of the body of the checker roller 55 protruding through the opening portion 62 (representative roller receiving

confinement grooves

64a, 64b) The symbol includes 64), and the roller receiving restraint groove 64 enables frictional contact by smooth relative rotational movement in response to the circular outer surface shape of the checker roller 55 that is in contact with the checker roller 55. It is formed as a curved surface with a curvature greater than the curvature of .

Figure 18 is a plan cross-sectional view of the door stopper mechanism 46 shown by assembling the rotating member 54 and the upper and lower fixed guide members 53 of the present invention, wherein the operating body 54 is formed in the first space 58. Two supports 65 accommodated within and supporting the body located in the inner (inner) direction of the checker roller 55 from both sides, and a first space so that the two supports 65 are elastic in a direction closer to each other. By including an elastic body 66 disposed within (58) (in Fig. 18, the compression coil spring is simply shown as a line to avoid complexity), the opening portion 62 and the roller receiving restraint groove come into contact with each other on a horizontal line. When aligned in a straight line, the elastic body 66 (a compression coil spring is used in the illustrated embodiment) moves the two supports 65 in the outer direction of the checker roller 55 by applying an elastic force to bring them closer to each other. The body protrudes through the opening portion 62 and is accommodated in the roller receiving restraint groove 64 to restrain the rotation of the rotating member 54. In this restrained state, the door 41 and the rotating bracket member When the force applied to the rotating member 54 due to the rotation of (45) is less than the binding force, the door 41 does not rotate and remains open in that position.

According to an embodiment of the present invention, two or three roller receiving confining grooves 64 are formed, and the two roller receiving confining grooves 64 are 90° out of phase with the opening portion 62, and are mutually It is preferable that the door 41 is formed on 180° of the opposing position. In this case, the door 41 is restricted from rotating at the 90° and 270° open positions, so that the door remains open at 90° in the first stage. In the second stage, at the 270° opening position, the door 41 is completely opened and the door 41 comes into close contact with the side wall of the loading box 40.

Therefore, although not shown in the drawing, three roller receiving restraint grooves 64 can be formed in the upper and lower protruding ring members 63, and in this case, in the door closed state, the openings 62 are at angles of 90°, 180°, and 270°, respectively. It is formed at a position with a ° phase difference to restrict the rotational movement of the door 41 at the 90°, 180° and 270° open positions, and at this time, the roller receiving restraint groove 64 is exactly 90°. , it does not have to be formed at 180°, so of course this can be changed to some extent depending on the door opening angle design.

Meanwhile, the roller receiving restraint groove 64 can be formed to penetrate the wall surface of the upper and lower protruding ring members 63, and the two

supports

65 and 65 apply force to the rotating member 54 in the rotation direction. It is preferable that the contact surface with the roller 55 is formed as a curved surface so that the rotating member 54 gently retracts the checker roller 55 (moves in the direction of the central axis) when subjected to a predetermined amount or more.

Figure 19 is a view showing the washer 67 placed between the rotating member 54 and the upper and lower fixed guide members 53 of the present invention, and this washer is connected to the first ring member 59 and the second ring member 62. ) (see FIG. 14) and functions to smoothly guide the rotation of the rotating member 54 and prevent wear.

Figure 20 (a) (b) shows the checker roller 55 and the operating body 56, (a) when the opening portion 62 and the roller receiving confinement groove 64 are aligned in a straight line. Due to the action of the elastic force (F1) of the elastic body (66), the two supports (65,65) constituting the actuating body (56) retract together to move the checker roller (55) to the outside (based on the state shown in FIG. 18). Then, it is pushed toward the upper side (see arrow T1), and as a result, the outer part of the body of the checker roller 55 leaves the first space 58 and goes outward (towards the top) through the opening 62. That is, it is an operational diagram showing a situation in which a part of its outer body protrudes toward the second space 60 and is accommodated in the roller receiving and restraining groove 64, and (b) shows a rotational force (F2) of a predetermined or higher value in the state (a). ) is applied to the rotating member 54, the upper and lower protruding ring members 63 are forced to ride over the checker roller 55 and press the checker roller 55 in the direction of the central axis, thereby pressing the support body 65, 65) are spread apart in the direction of the arrow b1 to accommodate the checker roller 55 between them, and at this time, the outer surface of the checker roller 55 is in sliding contact with the inner surface 63a of the upper and lower protruding ring members 63. In this state, the checker roller 55 is completely located within the first space 58 and the opening 62, showing that the rotating member 54 rotates and opens and closes even with a small force.

Hereinafter, the operating process of the device of the present invention will be described with reference to FIGS. 12, 21, and 22.

Figure 12 shows a state in which the door 41 is closing the rear opening of the vehicle loading box, and at this time, the checker roller 55 is pressed against the inner surface 63a of the upper and lower protruding ring members 63 of the rotating member 54. Therefore, the

supports

65 and 65 are spread apart to accommodate the inner body portion of the checker roller 55 between them. At this time, the compression spring, which is the elastic body 66, is compressed to reduce its length, causing a restoring elastic force inside. is accumulating.

In this state, when the door 41 of the loading box is opened and flipped open, the rotating bracket member 45 rotates, and the inner surface 63a of the upper and lower protruding ring members 63 of the rotating bracket member 45 The checker roller 55 applies a pressing force in the normal direction, resulting in frictional force, so the rotational motion feels a little tight, but the rotational moment is much larger than the frictional force, which interferes with the rotation of the rotation bracket member 45. does not cause

When the door 41 is opened by rotating the rotating bracket member 45 at a predetermined angle from the initial position, for example, 90° as shown in FIG. 21, the initial state formed close to the rotating bracket member 45 is opened. The position of the roller receiving restraint groove (64a) is also moved by a 90° phase difference by rotation and comes to a position opposite to the checker roller (55), and at that moment, the pressing force in the direction of the central axis by the inner surface (63a) is released. The compression spring expands due to the restoring elastic force of the elastic body 66, and a force (see F1 in FIG. 20) is applied to bring the two supports 65 on both sides closer to each other, thereby moving the checker roller 55 into the opening 62. The body of the checker roller 55, which sticks out into the second space 60 (based on the situation shown in FIG. 21), is pushed up so that it is tightly accommodated in the recessed roller receiving confinement groove 64a. do.

When the checker roller 55 is accommodated in the roller receiving restraint groove 64a, the rotating member 54 is locked and does not escape from the locked restraint state unless a predetermined force is applied, and the door 41 is opened at 90°. ) is maintained in its open state, preventing the door 41 from being arbitrarily closed due to wind, etc., thereby injuring people around it.

If you want to completely open the door 41 in this first-stage locked state, hold the door 41 with your hand and apply force in the opening direction.

Accordingly, when the force applied in the opening direction is greater than F2, the upper and lower protruding ring members 63 forcibly push the checker roller 55 in the direction of the central axis due to the rotational force acting in the circumferential direction, and from this point on, the checker roller 55 is pushed over. Since the roller 55 comes into contact with the inner surface 63a of the upper and lower protruding ring members 63, sliding friction occurs due to the continuously applied rotational force, and rotational movement of the door 41 occurs without great force. When the door (41) is fully opened, the door (41) is rotated 270° in the closed state, and in this state, the roller receiving restraint groove (64b) in the second position reaches the position of the checker roller (55). As in the previous case of 90°, the checker roller 55 is locked by receiving a part of its body in the roller receiving confinement groove 64b (at this time, the roller receiving confinement groove 64a used in the first locking position is shown in the figure 12), so that the door 41 is in close contact with the side wall of the loading box and does not close on its own unless wind, action, or a large artificial force is applied.

It should be understood that the present invention is not limited to the exemplary embodiments described herein. Various types and styles of user interfaces may be used in accordance with the present invention without limitation. Modifications and variations of the above-described embodiments of the invention are possible, as will be recognized by those skilled in the art in light of the above teachings. Accordingly, it is to be understood that within the scope of the appended claims and their equivalents, the invention may be practiced otherwise than as specifically described. For example, the embodiment shown in the present invention proposes a locking method that pushes the checker roller outward, but it is also possible, of course, to configure the locking method to push the checker roller inward (in the direction of the central axis).

The present invention is linked to the opening and closing of the rear door of the vehicle cargo compartment, and while the rotating member slides and rotates along the fixed guide member, the roller is operated so that the roller is placed between the rotating member and the fixed guide member at a predetermined designated position, thereby functioning as a stopper to close the door. It is possible to keep it stable in the open state in multi-level positions.

Claims

A fixed bracket member fixed to the vehicle body, a rotating bracket member for door coupling, one side of which is fixed to the loading box door and the other side rotatably coupled with respect to the fixed bracket member, and the open door is restrained to stop at a predetermined position. In the rear opening and closing door hinge device of a cargo vehicle loading box including a door stopper mechanism,

The fixing bracket member is provided with upper and lower brackets that protrude at intervals up and down, and the door stopper mechanism is an upper and lower fixing mechanism that is symmetrically mounted at a predetermined upper and lower interval so as to be aligned on a vertical axis inside the ends of the upper and lower brackets. A guide member, a central axis member installed to vertically penetrate the upper and lower fixed guide members, a space formed on the outer periphery of the boss portion surrounding and supporting the outer periphery of the central shaft member passing through the upper and lower fixed guide members, and A rotating member is mounted on the central axis member between the upper and lower fixed guide members and is coupled to the upper and lower fixed guide members to enable slide rotation movement with respect to the upper and lower fixed guide members, and is installed in the space portion so that the rotating member moves the door when the door is closed. When opened, it moves to simultaneously span the rotating member and the upper and lower fixed guide members at a preset rotational position at a predetermined angle, thereby restraining the rotating member from rotating without the action of a predetermined or greater external force, so that the door remains open. A checker roller that slides in contact with the inner surface of the rotating member in sections other than the set angular rotation position and allows the rotating member to rotate around the central axis member, and an actuator that supports and operates the checker roller. It includes a rear opening and closing door hinge device for a cargo vehicle loading box, wherein one end of the rotating bracket member is fixed to the rotating member.
The method of claim 1, wherein the upper and lower fixed guide members include a boss portion that surrounds and supports the outer periphery of the penetrating central axis member, and a first ring member formed concentrically with a ring-shaped first space portion on the outer periphery of the boss portion; A second ring member is concentrically formed with a second space between the first ring member and a size that allows the checker roller to pass through the wall of the first ring member so as to form a right angle to the door in a closed state. It has an opening formed by an opening, and the rotating member has a predetermined rotation angle with the upper and lower protruding ring members and the opening portion respectively inserted into the second space portion of the upper and lower fixed guide members and coupled to be able to slide and rotate in an annular manner. One or more roller receiving confinement grooves formed on the upper and lower protruding ring members to accommodate a portion of the body of the checker roller that protrudes through the opening when positioned opposite the opening through the rotational opening and closing of the door. Features a rear opening and closing door hinge device for a cargo vehicle loading box.
The method of claim 2, wherein the actuator includes two supports accommodated in the first space to support the inner body of the checker roller on both sides, and the first space so that the two supports are elasticated in a direction closer to each other. By including an elastic body disposed within, when the opening portion and the roller receiving restraint groove are aligned in a straight line, the outer body of the checker roller moves through the opening portion due to the force of the elastic body pushing the two supports closer to each other. A rear opening and closing door hinge device for a cargo vehicle loading box, characterized in that it protrudes through and is received in the roller receiving restraint groove to restrict the rotation of the rotating member.
The rear door hinge device of claim 3, wherein one, two, or three roller receiving restraint grooves are formed to lock and restrain the door in an arbitrary open position.
The method of claim 4, wherein the two roller receiving restraint grooves are each positioned at 90° from the opening portion, and are formed at 180° opposite each other, so that the door rotates at the 90° and 270° open positions. A rear opening and closing door hinge device for a cargo vehicle loading box, characterized in that it is formed to restrain.
The method of claim 4, wherein the two roller receiving restraint grooves are positioned at 90° and 180° with respect to the opening portion and are formed to have a phase difference at right angles to each other, so that the door rotates at the 90° and 180° open positions. A rear opening and closing door hinge device for a cargo vehicle loading box, characterized in that it is formed to restrain.
The method of claim 4, wherein the three roller receiving restraint grooves are formed at 90°, 180°, and 270° positions with respect to the opening portion in the door closed state, so that the door rotates at 90°, 180°, and 270° open positions. A rear opening and closing door hinge device for a cargo vehicle loading box, characterized in that it is formed to restrict movement.
The rear door hinge device of claim 3, wherein the elastic body is a compression coil spring.
The rear opening and closing door hinge device of a cargo vehicle loading box according to claim 2, wherein the roller receiving restraint groove is formed through the wall surface of the upper and lower protruding ring members.
The freight vehicle according to claim 3, wherein the two supports have a curved contact surface with the checker roller so that the rotating member gently retracts the checker roller when the rotating member receives a predetermined force or more in the rotation direction. Rear opening and closing door hinge device of the loading box.
The rear door hinge device of claim 1, wherein a washer is disposed between the upper and lower fixed guide members and the rotating member.