Open-close apparatus and method for low voltage cabling box

Abstract

The present invention relates to an opening and closing device for a low-voltage connection box that facilitates the opening of a lid from the housing of the low-voltage connection box, thereby reducing working time and preventing safety accidents for workers. The device is characterized by comprising: a hinge (130) connecting the rear side of the housing (110) and the lid (120) of the low-voltage connection box (100); a handle (140) installed on the front side of the upper surface of the lid (120); and a pair of gas springs (150a) (150b) each installed on both sides of the housing (110) and the lid (120) with the hinge (130) in between, so as to be able to lift the lid (120).

Description

Technology Field

[0001] The present invention relates to a device and method for opening and closing a low-voltage connection box, and more specifically, to a device and method for opening and closing a low-voltage connection box in which a lid is opened from the body of the low-voltage connection box in a hinged manner to maintain the opened angle, and automatically prevents the lid from suddenly falling after being opened at a certain angle. Background Technology

[0002] Generally, the main cable for supplying electricity to houses, commercial buildings, and other structures is connected inside a low-voltage junction box (or a rectangular manhole) through multiple branch cables so that electricity can be supplied to each of the multiple power demand points.

[0003] A low-voltage connection box is installed by burying a box equipped with a connection space for electrical cables to be connected below the ground, such as on a road or sidewalk, and is configured so that the connection space can be opened or closed by a separate metal lid.

[0004] However, there were problems in that when opening the low-voltage connection box, the structure involves removing the pentagonal bolt connecting the box and the lid and inserting a crowbar between the lid and the box to open it, which poses a risk of damage to the box, as well as allowing foreign substances such as soil or water to enter the box through the gap between the box and the lid, and there is a risk of finger or toe pinching accidents due to the weight of the lid (32.5 kg). Additionally, there is a concern that opening the lid is inconvenient because there is no handle when lifting it, and that the weight of the lid puts strain on the musculoskeletal system, such as the lower back and wrists, potentially causing injury to the worker. Prior art literature

[0005] Korean Patent Publication No. 0841786 (June 20, 2008) The problem to be solved

[0006] The objective of the present invention is to provide an opening and closing device and method for a low-voltage connection box that can reduce working time without damaging the housing and lid and prevent safety accidents of workers. means of solving the problem

[0007] An opening and closing device for a low-voltage connection box according to an embodiment of the present invention for solving the above technical problem comprises: a hinge connecting the rear side of the housing body and the lid of the low-voltage connection box; a handle installed on the front side of the upper surface of the lid; and a pair of gas springs each installed on both sides of the housing body and the lid with the hinge in between, so as to be able to lift the lid.

[0008] The above hinge is characterized by connecting the rear side of the inner surface of the above enclosure and the rear side of the lower surface of the above lid.

[0009] The above handle is characterized by having a rotatable structure with both ends hinged.

[0010] A pair of the above gas springs are characterized in that one end of each is connected to one side of the left and right inner surface of the housing, and the other end is connected to one side of the left and right lower surface of the lid.

[0011] The above-mentioned lid is characterized by having a gravity sensor installed on the front side of the lower surface to detect a sudden drop after the lid is opened.

[0012] The gravity sensor is characterized by being installed at a position opposite the handle with the thickness of the lid (120) in between.

[0013] The above gravity sensor is characterized by including a transmitting communication device.

[0014] The lower rear side of the lid is characterized by having a terminal installed thereon that receives fall information detected by the gravity sensor via short-range communication by the transmitting communication device.

[0015] The above terminal It is characterized by being installed inside the above hinge.

[0016] The above terminal is characterized by comprising: a receiving communication device that receives drop information from the transmitting communication device; a control device that receives drop information from the receiving communication device and determines the risk; and a braking device that receives a risk signal from the control device, brakes the operation of the hinge, and then, after a certain period of time has elapsed, reverses the rotation to adjust the hinge to an initially set state so that the lid falls.

[0017] The above braking device is composed of a motor, and the motor shaft of the motor is connected to the hinge pin of the hinge.

[0018] In addition, the opening and closing device of a low-voltage connection box according to another embodiment of the present invention comprises: a hinge connecting the rear side of the housing and the lid of the low-voltage connection box; a handle installed on the front side of the upper surface of the lid; a pair of gas springs each installed on both sides with the hinge in between, on one side of the housing and the lid, so as to lift the lid; a gravity sensor installed on the front side of the lower surface of the lid to detect a sudden fall after the lid is opened; and a terminal installed inside the hinge to receive information about the sudden fall from the gravity sensor and brake the operation of the hinge.

[0019] In addition, a method for opening and closing a low-voltage connection box according to another embodiment of the present invention comprises: a step of pulling a handle installed on the lid upward so that the lid is raised around a pivot point of a hinge connecting the housing and the lid of the low-voltage connection box; and a step of releasing the force pulling the handle so that the lid stops in an open state at a certain angle by operating a gas spring of a pair of gas springs connecting the housing and the lid by the force of raising the lid. Effects of the invention

[0020] The opening and closing device and method of the low-voltage connection box of the present invention is equipped with a handle and a gas spring so that the lid can be opened and closed from the housing of the low-voltage connection box in a hinged manner, thereby reducing the time required to open and close the lid without damaging the housing and the lid, and at the same time preventing musculoskeletal injuries such as those to the waist and wrists that occurred when opening and closing the lid manually as in the conventional method, and by blocking the lid from suddenly falling when open, it has the effect of preventing safety accidents in which a worker's fingers and toes are caught between the lid and the housing. Brief explanation of the drawing

[0021] FIG. 1 is a side cross-sectional view of a low-voltage connection box equipped with a switching device according to the present invention. FIG. 2 is a partial front cross-sectional view of a low-voltage connection box equipped with a switching device according to the present invention. FIG. 3 is a plan view of a lid equipped with a handle according to the present invention. FIG. 4 is a block diagram according to the present invention in which a gravity sensor and a transmitting communication device are provided on the lid, and a receiving communication device, a control device, and a braking device are provided on the hinge. Specific details for implementing the invention

[0022] Hereinafter, preferred embodiments of the present invention are described with reference to the accompanying drawings to fully understand the present invention. Embodiments of the present invention may be modified in various forms, and the scope of the present invention should not be interpreted as being limited to the embodiments described in detail below. It should be noted that in each drawing, identical components may be illustrated with the same reference numerals. Detailed descriptions of known functions and components that are deemed to unnecessarily obscure the essence of the present invention are omitted.

[0023] Referring to FIGS. 1 to 4, the opening and closing device of a low-voltage connection box according to an embodiment of the present invention includes a hinge (130), a handle (140), a pair of gas springs (150a) (150b), a terminal (160), and a gravity sensor (170) that are installed on the housing (110) and the lid (120) of the low-voltage connection box (100) to reduce working time and prevent safety accidents of workers without damaging the housing (110) and the lid (120).

[0024] That is, a stepped portion (112) is formed on the inner surface of the opening side of the above-mentioned housing (110) so that when the lid (120) is covered, the lower edge of the lid (120) rests on it, and the height of the upper surface of the lid (120) is equal to the height of the upper surface of the housing (110). The stepped portion (112) serves to provide an area so that when the opening of the housing (110) is closed, the housing (110) and the lid (120) are fastened by a plurality of fastening bolts (122).

[0025] The hinge (130) is installed to connect the rear center of the housing (110) and the lid (120), and serves to allow the lid (120) to be opened and closed from the housing (110) in a hinged manner.

[0026] It is preferable that the hinge (130) has an articulated structure in which one side and the other side are respectively connected to the rear side of the inner surface of the housing (110) and the rear side of the lower surface of the lid (120), and the one side and the other side of the hinge (130) are connected by a pin.

[0027] The handle (140) is a rotary structure with both ends hinged so as to be installed at the center of the front side of the upper surface of the lid (120), and when not in use, it lies flat on the upper surface of the lid (120), and when in use, the lid (120) opens when the worker pulls the handle (140) upright.

[0028] The above pair of gas springs (150a) and (150b) are each composed of a gas-filled cylinder and a piston, installed on each side of the housing (110) and the lid (120) with a hinge (130) in between, and function to operate the gas springs by the force of the lid (120) being lifted so that the lid (120) stops in an open state at a certain angle.

[0029] At this time, it is preferable that one end of each of the pair of gas springs (150a) (150b) is connected to one side of the left and right inner surface of the housing (110), and the other end is connected to one side of the left and right lower surface of the lid (120).

[0030] The gravity sensor (170) is installed on the front side of the lower surface of the lid (120) and serves to detect a sudden fall after the lid (120) is opened, and includes a transmission communication device (172) to transmit fall information to a terminal (160).

[0031] At this time, it is preferable that the gravity sensor (170) be installed on the lower surface of the lid (120) opposite the handle (140) with the thickness of the lid (120) in between.

[0032] The above terminal (160) is installed inside the hinge (130) on the rear side of the lower surface of the lid (120) and receives fall information detected by the gravity sensor (170) via short-range communication by a transmitting communication device (172) to brake the operation of the hinge (130), and includes a receiving communication device (162), a control device (164), and a braking device (166).

[0033] At this time, the receiving communication device (162) plays the role of receiving drop information from the transmitting communication device (172).

[0034] The above control device (164) receives fall information from the receiving communication device (162) and determines the risk.

[0035] The above braking device (166) receives a danger signal from the control device (164), brakes the operation of the hinge (130), and after a certain period of time has elapsed, reverses the operation to adjust the hinge (130) to the initially set state so that the lid (120) falls. It plays a role.

[0036] At this time, the braking device (166) is physically in contact with one side of the hinge (130) so that the lid (120), which is opened at a certain angle with the hinge (130) as the center of rotation, does not suddenly close, thereby stopping the operation of the hinge (130) and preventing accidents such as the worker's fingers or toes being caught due to the weight of the lid (120).

[0037] in other words, The braking device (166) is composed of a motor, and the motor shaft (166a) of the motor can be configured to be connected to the hinge pin (132) of the hinge (130).

[0038] Meanwhile, a method for opening and closing a low-voltage connection box according to another embodiment of the present invention includes: a step of pulling a handle (140) installed on the lid (120) upward so that the lid (120) is raised around a hinge (130) connecting the housing (110) and the lid (120) of the low-voltage connection box (100); and a step of releasing the force pulling the handle (140) so that the lid (120) stops in an open state at a certain angle by operating the gas springs of a pair of gas springs (150a) (150b) connecting the housing (110) and the lid (120) by the force of raising the lid (120).

[0039] As such, the present invention is a low-pressure connection box opening and closing device equipped with a handle (140) and a gas spring (150a) (150b) so that the lid (120) can be opened and closed from the housing (110) of the low-pressure connection box (100) in a hinged manner. Therefore, the time required to open and close the lid (120) is shortened without damaging the housing (110) and the lid (120), and at the same time, musculoskeletal injuries such as those to the waist and wrists that occur when the lid (120) is opened and closed manually as in the past can be prevented in advance. Additionally, by blocking the lid (120) from suddenly falling while it is open, it has the advantage of preventing safety accidents in which a worker's fingers and toes are caught between the lid (120) and the housing (110).

[0040] Meanwhile, the present invention is not limited to the embodiments described above, but can be implemented with modifications and variations within the scope of the essence of the invention, and such technical concepts to which modifications and variations are applied should also be considered to fall within the scope of the following patent claims. Explanation of the symbols

[0041] 100 : Low voltage connection box 110 : Hull 112 : Step 120 : Lid 122 : Fastening bolt 130 : Hinge 132 ; Hinge pin 140 : Handle 150a, 150b: Gas spring 160 : Terminal 162 : Receiving communication device 164 : Control unit 166 : Braking system 166a : Motor shaft 170: Gravity sensor 172 : Transmitting communication device

Claims

Claim 1 A low-pressure connection box opening and closing device characterized by comprising: a hinge (130) connecting the rear side of the housing (110) and the lid (120) of the low-pressure connection box (100); a handle (140) installed on the front side of the upper surface of the lid (120); and a pair of gas springs (150a) (150b) respectively installed on both sides of the housing (110) and the lid (120) with the hinge (130) in between so as to lift the lid (120), and a gravity sensor (170) installed on the front side of the lower surface of the lid (120) to detect a sudden drop after the lid (120) is opened. Claim 2 An opening and closing device for a low-pressure connection box according to claim 1, wherein the hinge (130) connects the rear side of the inner surface of the housing (110) and the rear side of the lower surface of the lid (120). Claim 3 An opening and closing device for a low-voltage connection box according to claim 1, wherein the handle (140) is a rotary structure with both ends hinged. Claim 4 A low-pressure connection box opening and closing device according to claim 1, wherein a pair of gas springs (150a) (150b) each have one end connected to one side of the left and right inner surface of the housing (110) and the other end connected to one side of the left and right lower surface of the lid (120). Claim 5 delete Claim 6 A low-voltage connection box opening and closing device according to claim 1, wherein the gravity sensor (170) is installed at a position opposite to the handle (140) with the thickness of the lid (120) in between. Claim 7 A switching device for a low-voltage connection box according to claim 1, wherein the gravity sensor (170) includes a transmitting communication device (172). Claim 8 A low-voltage connection box opening and closing device according to claim 7, characterized in that a terminal (160) is installed on the rear side of the lower surface of the lid (120) to receive falling information detected by the gravity sensor (170) via short-range communication by the transmitting communication device (172). Claim 9 A low-voltage connection box opening and closing device according to claim 8, wherein the terminal (160) is installed inside the hinge (130). Claim 10 The opening and closing device of a low-voltage connection box according to claim 9, wherein the terminal (160) comprises: a receiving communication device (162) that receives drop information from the transmitting communication device (172); a control device (164) that receives drop information from the receiving communication device (162) and determines the risk; and a braking device (166) that receives a risk signal from the control device (164), brakes the operation of the hinge (130), and then, after a certain period of time has elapsed, reverses the operation to adjust the hinge (130) to the initially set state so that the lid (120) falls. Claim 11 An opening and closing device for a low-voltage connection box according to claim 10, wherein the braking device (166) is composed of a motor, and the motor shaft (166a) of the motor is connected to the hinge pin (132) of the hinge (130). Claim 12 A low-voltage connection box opening and closing device characterized by comprising: a hinge (130) connecting the rear side of the housing (110) and the lid (120) of the low-voltage connection box (100); a handle (140) installed on the front side of the upper surface of the lid (120); a pair of gas springs (150a) (150b) respectively installed on both sides of the housing (110) and the lid (120) with the hinge (130) in between so as to lift the lid (120); a gravity sensor (170) installed on the front side of the lower surface of the lid (120) to detect a sudden drop after the lid (120) is opened; and a terminal (160) installed inside the hinge (130) to receive information about a sudden drop from the gravity sensor (170) and brake the operation of the hinge (130). Claim 13 A method for opening and closing a low-pressure connection box, comprising: a step of pulling a handle (140) installed on the lid (120) upward so that the lid (120) is raised by rotating a hinge (130) connecting the housing (110) and the lid (120) of the low-pressure connection box (100); and a step of releasing the force pulling the handle (140) so that the lid (120) stops in an open state at a certain angle by operating the gas springs of a pair of gas springs (150a) (150b) connecting the housing (110) and the lid (120) by the force of raising the lid (120); wherein a gravity sensor (170) is installed on the front side of the lower surface of the lid (120) to detect a sudden drop after the lid (120) is opened.

Images