JPH04111205U - Stopper for switchboard door - Google Patents

Abstract

(57) [Summary] [Purpose] To limit the opening angle of the door to a predetermined angle without deforming the stopper guide even after repeated use, and to maintain the door at that angle, and with a simple structure and low cost. To provide a stopper for a switchboard door that can be manufactured. [Structure] A stopper shaft guide that is fixed to the casing of the switchboard and has two stopper shaft holes connected by a guide groove, and a stopper that is fixed to the door of the switchboard and has a stop pin hole at one end of the guide groove. A stopper arm that is provided with a guide, a stopper shaft having a guide pin with a retaining washer at one end, a stop pin having a guide pin with a retaining washer at the other end, and connecting the stopper shaft guide and the stopper guide. It was composed of

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

The present invention relates to a stopper for maintaining a constant opening degree of a switchboard door.

0002

[Conventional technology]

When taking out or putting in equipment stored in the power distribution board, do not allow the equipment to Collision with equipment attached to the door, damaging or injuring one or both of them. This also prevents the door from being opened when inspecting the inside of the switchboard or testing it from adjacent panels. In order to prevent damage from hitting the door of the A stop is provided to limit and maintain a predetermined angle.

0003 Based on Figures 4 to 6, we will discuss stoppers for the doors of power distribution boards that are commonly used in the past. To explain, in FIG. 4 showing a cross-sectional plan view of the main part of the stopper part, 1 is a switchboard. 2 is the switchboard door, 3 is the hinge that attaches the door 2 to the casing 1 so that it can rotate freely. A hinge pin, 4 is a stopper shaft provided in the housing 1, and 5 is a hinge pin with one end loosely fitted to the stopper shaft 4. and a stopper arm with a stop pin 6 at the other end, 7 is a stopper arm fixed to the door 2. One end of the guide groove 8 is a stop pin hole into which the stop pin 6 is inserted. 9 is provided.

0004 FIG. 5(A) is a diagram showing details of the stopper shaft 4 in cross section A to A in FIG. 4 is a hexagonal bolt that serves as a stopper shaft, and is screwed into a piece 10 fixed to the housing 1. and is locked with a lock nut 11. 5 is loosely fitted to the stopper shaft 4. 12 is a washer on the stopper arm.

[0005] FIG. 5(B) is a diagram showing details of the stop pin 6 in the cross section from bottom to bottom in FIG. The outer diameter of the stop pin 6 fixed to the topper arm 5 is Attach the retaining washer 14, which is larger than the spring hole 9, with the bolt 15 through the spring washer. A guide pin 13 is provided and inserted into the guide groove 8 of the stopper guide 7. It is.

[0006] Figure 6 is a side view of the stopper part in Figure 4 seen from inside the switchboard, with door 2 closed. Therefore, if the stopper has a diameter larger than the width of the guide groove 8 of the stopper guide 7, The push pin 6 is on the top surface of the stopper guide 7, and the stopper arm 5 is inclined. To open a closed door, rotate the door 2 counterclockwise in Figure 4 around the hinge pin 3. move. A stop pin fixed to one end of the stopper arm 5 as the door 2 rotates. A guide pin 13 provided at the tip of the stopper guide 7 fixed to the door 2 Guided by the guide groove 8, the stopper arm 5 moves around the stopper shaft 4. Rotate counterclockwise. Then, the door 2 is moved at a predetermined angle as shown by the two-dot chain line in When opened, the guide pin 6 falls into the stop pin hole 9 provided at one end of the guide groove 8. When the door is closed, the stopper arm 5 becomes horizontal and limits the opening of the door 2 to a predetermined angle. Keep it constant.

[0007] To close the open door 2, insert the stop pin 6 of the stopper arm 5 through the hole 9. Pull up and rotate the door 2 clockwise around the hinge pin 3. With the rotation of door 2 The guide pin 13 provided at the tip of the stop pin 6 moves within the guide groove 8, The stopper arm 5 rotates clockwise around the stopper shaft 4 to finish closing the door 2. The stopper portion is shown by a solid line in FIG. 4, and is in the state shown in FIG. in this way The opening angle of the door can be limited to a predetermined angle and kept constant. was generally considered to be the angle at which equipment stored in the switchboard could be taken in and out. Therefore, the restricted angle is 100 degrees or more, and if there are rows of boards, only one door should be closed. Once opened, the door on the adjacent panel could not be opened or closed freely.

[0008] Therefore, recently, angles of 90 degrees or less are selected for doors for tests, inspections, inspections, etc. For loading and unloading of equipment stored inside the panel, etc. where the opening degree and angle exceeding 90 degrees are selected. Adopts a two-position limit stopper that can keep the door at two angles with the opening degree of the door. I'm starting to be able to do it.

[0009] Fig. 7 shows a second example in which a stop pin hole 91 is added to the stopper guide 7 shown in Fig. 4. This is a plan view showing the stopper guide 71 of the position limit stopper, which stops when the door 2 is opened. The pin 6 falls into the stop pin hole 91 and limits the opening degree of the door 2 to a first predetermined angle. Then, lift the stop pin 6 from the stop pin hole and open the door 2 again. The stop pin 6 falls into the stop pin hole 9 and controls the opening degree of the door 2 to a second predetermined angle. limit To close the door 2, stop the stop pin 6 part of the stopper arm 5. Either lift it until it passes through the pin hole 91 and close it, or slide the stop pin 6. Drop the top pin into the hole 91 to set the opening angle of the door 2 to the first predetermined angle, and then Lift the top pin 6 portion from the hole 91 and close the door 2.

0010

[Problem that the idea aims to solve]

If the stop pin 6 falls into the stop pin hole 91 while opening or closing the door 2, In order for this part to absorb the kinetic energy of door 2 and keep it stationary, it is long. A stop pin hole 91 provided in the middle of the guide groove 8 is connected from the stop pin 6. During repeated use, the width of the guide groove 8 expands and stops due to large force. The opening angle of the door 2 is limited to a first predetermined angle. You won't be able to keep it at that angle.

[0011] This invention allows the door to open at a predetermined angle without deforming the stopper guide. To be able to limit and maintain the angle at that angle, and to manufacture it at low cost with a simple structure. The purpose of this invention is to provide a stopper for the door of a switchboard that allows for

0012

[Means to solve the problem]

This invention changes the position of the stopper shaft instead of the stop pin position to control the opening degree of the door. It is intended to limit and maintain a constant level, and is fixed to the housing of the switchboard and consists of two switches. The stopper shaft guide, which connects the topper shaft hole with a guide groove, is fixed to the door of the power distribution board. A stopper guide with a hole for a stop pin at one end of the guide groove and a pullout guide at one end. A stopper shaft is provided with a guide pin with a retaining washer, and a retainer is provided at the other end. A stop pin with a guide pin with a washer is provided, and the stopper shaft guide and the stop pin are connected to each other. The stopper arm that connects to the stopper guide can form a stopper for the switchboard door. It is characterized by.

[0013]

[Effect]

The door opens to a first predetermined angle, maintains that angle, and changes the position of the stopper shaft. The door can be further opened to a second predetermined angle, and the door can be maintained at that opening angle. I can do that.

[0014]

【Example】

1 to 3 are diagrams showing one embodiment of the present invention, and the same parts as in FIGS. 4 to 6 have the same reference numerals. The explanation will be omitted by adding a number.

[0015] In FIG. 1 showing a plan view of the stopper part, 16 is a stopper shaft guide with a U-shaped cross section. One side of the two opposing sides is fixed to the housing 1, and the other side is provided with a guide groove 17. Connected stopper shaft holes 18 and 19 are drilled. 7 is the stopper guide One side of the L-shaped cross section is fixed to the door 2, and the other side has a guide groove 8 and a stock at one end. A pin hole 9 is provided. 51 is when the door 2 is opened to a predetermined angle. The stopper arm is bent appropriately so as not to hit the body 1, and one end has a stopper arm shown in Fig. 2. As shown in the figure, the stopper shaft 61 equipped with the guide pin 13 with a retaining washer 14 is fixed. and a guide pin 13 with a retaining washer 14 as shown in Fig. 5(B) is attached to the other end. A stop pin 6 provided thereon is fixed. The stopper shaft 61 is a stopper shaft. The stop pin 6 is fitted into the stopper shaft hole 18 provided in the guide 16. The guide pin 13 is inserted into the guide groove 8 of the stopper guide 7, and the stopper shaft guide The door 16 and the stopper guide 7 are connected.

[0016] When the door 2 is rotated counterclockwise around the hinge pin 3, the stopper arm 51 rotates counterclockwise around the stopper shaft 61 fitted into the stopper shaft hole 18. , the stop pin 6 is a guide whose guide pin 13 is provided on the stopper guide 7. It moves guided by the groove 8, falls into the stop pin hole 9, and stops at the inserted position. However, the stopper arm 51 is like 51a shown by the two-dot chain line, and the door 2 is also like the two-dot chain line 51a. The first predetermined angle is maintained as shown by the chain line 2a.

[0017] To close the door 2 from this first predetermined angle, the stop pin must be inserted into the hole 9. The door 2 is rotated clockwise around the hinge pin 3 by pulling up the stop pin 6. As the door 2 rotates, the guide pin 13 of the stop pin 6 moves within the guide groove 8, The stopper arm 51 is centered on the stopper shaft 61 fitted into the stopper shaft hole 18. When the door 2 is rotated clockwise (1) and the door (2) is closed, the state shown by the solid line in Fig. 1 and shown in Fig. 3 is reached. becomes.

[0018] Figure 3 is a side view of the stopper part in Figure 1 seen from inside the switchboard. The shaft 61 is fitted into the stopper shaft hole 18 of the stopper shaft guide 16, and The pin 6 has a diameter larger than the width of the guide groove 8 of the stopper guide 7, so it The stopper arm 51 is located on the upper surface of the door 7 and is inclined.

[0019] To further open the door 2 to a second predetermined angle, the stop pin 6 is for the stop pin. While the stopper shaft 61 is still inserted into the hole 9, insert the stopper shaft 61 that is inserted into the stopper shaft hole 18. Pull up and rotate the door 2 counterclockwise around the hinge pin 3. Rotation of door 2 At the same time, the guide pin 13 of the stopper shaft 61 is connected to the guide of the stopper shaft guide 16. The stopper arm 5 moves through the stopper shaft groove 17, falls into the stopper shaft hole 19, and fits into the stopper shaft hole 19. Door 1 looks like 51b shown with a two-dot chain line, and door 2 looks like 2b shown with a two-dot chain line. to maintain the second predetermined angle.

[0020] To close the door 2 from this second predetermined angle, the stop pin must be inserted into the hole 9. Leave the stop pin 6 as it is, and insert the stopper fitted into the stopper shaft hole 19. The shaft 61 is pulled up and the door 2 is rotated clockwise around the hinge pin 3. Rotation of door 2 At the same time, the guide pin 13 of the stopper shaft 61 is connected to the guide of the stopper shaft guide 16. The door 2 moves through the stopper shaft hole 17 and fits into the stopper shaft hole 18, and the opening degree of the door 2 is the first. is maintained at a predetermined angle. From this first predetermined angle, the door is 2 can be closed.

[0021] In order to close the door 2 from the second predetermined angle mentioned above, the stopper shaft is inserted into the hole 19 for the stopper shaft. Leave the inserted stopper shaft 61 as it is and insert it into the stop pin hole 9. the same way as when closing the door 2 from the first predetermined angle by pulling up the stop pin 6. Door 2 can also be closed by It opens to the second predetermined angle without stopping once.

[0022] If you open the switchboard door up to 90 degrees, the same way as doors for general buildings, you will be able to see inside. Since the door can be inspected, tested, and inspected, the door should always be opened to the first predetermined angle mentioned above. It will be a good thing if you keep it that way. In addition, the output of equipment housed in the switchboard It is extremely rare to open the door more than 90 degrees for things such as loading or changing internal wiring. Therefore, even if you change the position of the stopper shaft and open the door more than 90 degrees, the stopper shaft position Changing the position is extremely easy and does not pose a problem in terms of work efficiency.

[0023]

[Effect of the idea]

The stopper for the switchboard door according to the present invention is a stopper provided on the stop arm. The pin is attached to the stop guide provided in the middle of the long guide groove that is fixed to the door. Unlike the door that falls into the stopper hole and holds it at that angle, the stopper Stop the door by changing the position of the stop shaft provided on the arm, and adjust it to that angle. The stop guide is used to hold the door, so while the door is being opened and closed repeatedly, The width of the idle groove expands to become larger than the outside diameter of the stop pin, and functions as a stopper. The U-shaped cross-section strip fixed to the switchboard casing was Topper shaft guide, L-shaped cross section stopper guide fixed to the door, stopper shaft guide The stopper arm that connects the stopper guide and the stopper guide is simple and safe in terms of shape and structure. This has the practical effect of being able to be manufactured at low cost.

[Brief explanation of drawings]

FIG. 1 is a cross-sectional plan view of a main part of a stopper for a door of a switchboard showing an embodiment of the present invention.

FIG. 2 is a side view of the stopper as seen from the inside of the switchboard.

FIG. 3 is a detailed view of the stopper shaft in a cross-sectional view taken from A to H in FIG. 1;

FIG. 4 is a cross-sectional plan view of main parts of a conventional example of a stopper for a door of a switchboard.

5 is a detailed view of the stopper shaft portion and stop pin portion in FIG. 4, FIG. 5(A) is a sectional view from A to A in FIG. 4, and is a detailed view of the stopper shaft portion; FIG. 5(B) is a detailed view of the stopper shaft portion in FIG. 4; Detailed view of the stop pin section in a cross-sectional view.

FIG. 6 is a side view of the stopper in FIG. 4, seen from inside the switchboard.

FIG. 7 is a plan view of a stopper guide portion in a conventional two-position limit stopper.

[Explanation of symbols]

1...Switchboard housing 2...Switchboard door 6...stop pin 7...Stopper guide 8, 17...Guide groove 9...Hole for stop pin 13...Guide pin 14...Keeping washer 16...Stopper shaft guide 18, 19...Stopper shaft hole 51...Stopper arm 61...stopper shaft

Claims (1)

[Scope of utility model registration request] 1. A stopper shaft guide that is fixed to a casing of a switchboard and has two stopper shaft holes connected by a guide groove, and a stopper shaft guide that is fixed to a door of the switchboard and has a stop pin hole at one end of the guide groove. a stopper shaft having a stopper guide with a stopper guide, a stopper shaft having a guide pin with a retaining washer at one end, and a stop pin having a guide pin with a retaining washer at the other end, connecting the stopper shaft guide and the stopper guide. A stopper for a door of a power distribution board, characterized by comprising a stopper arm.