JPH1053394A - Vertically moving member control mechanism - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent overload to a motor even if the motor is driven with a force being applied reverse to an upward force. SOLUTION: A drive shaft 4 is connected to the output shaft 33 of a motor 3. A moving member 5 which has a nut part directly fitted around the drive shaft 4 and a connecting cylinder part directly connected to a bearing plate, with the nut part connected to the connecting cylinder part via a viscous fluid, is placed. A guide member 8 passed through a guide receiving part provided in the bearing plate 7 is fixed in place along the direction of vertical movement. A vertically moving member 6 which moves up and down as the bearing plate 7 moves up and down together with the moving member 5 as the output shaft 33 rotates is supported on the bearing plate 7.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vertically moving member control mechanism.

[0002]

2. Description of the Related Art In parking lots and the like, they are always buried in the ground, but buried poles are buried as necessary to prohibit parking other than specific cars. Also, in parks and the like, similar poles are buried to prohibit the entry of cars and bicycles.

[0003]

Some of the above-mentioned embedded poles have a handle attached to the upper end of the pole and are manually moved up and down, while others are electrically driven in which a motor is disposed in a case. . In the case of an electric pole, it is usual to arrange a rack in the vertical direction of the case and attach a pinion that meshes with the rack to the pole, thereby moving the pole up and down.

However, in such a structure, if a heavy object such as an automobile tire is placed on the upper end of the buried pole, the motor is driven in the ascending direction of the pole without noticing that. In such a case, the pole may not rise, and the motor may be overloaded, causing damage such as burning of the motor.

The present invention has been made in view of the above points, and even if the motor is driven in a state where a force opposing the ascending direction is applied to a vertically moving member such as an embedded pole,
It is an object to provide a vertically moving member control mechanism that can prevent an overload on a motor.

[0006]

In order to achieve the above object, a vertically moving member control mechanism according to the present invention comprises a motor, a drive shaft connected to an output shaft of the motor, and a nut directly screwed to the drive shaft. A moving member in which the nut portion and the connecting tube portion are connected via a viscous liquid, and the nut portion and the connecting tube portion are fixedly disposed along the vertical movement direction. A guide member that is inserted into the guide receiving portion provided on the bearing plate, and a vertically moving member that is supported by the bearing plate, and that moves up and down by the bearing plate moving up and down together with the moving member with the rotation of the output shaft. , Is characterized by having. This vertically moving member control mechanism is preferably applied to an embedded pole which is a vertically moving member and is disposed in a parking lot or the like.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in more detail based on embodiments shown in the drawings. In the figure, 1
Denotes a vertically moving member control mechanism according to the present embodiment, and includes a case 2, a motor 3, a drive shaft 4, a moving member 5, a vertically moving member 6, and the like. In the present embodiment, an example is shown in which the present invention is applied to an embedded pole disposed in a parking lot or the like.

The case 2 is formed in a cylindrical shape with a bottom and is buried underground. The motor 3 is fixed in a motor box 31 formed by a partition plate below the case 2.
The motor 3 is electrically connected to an external power supply (not shown) via a control box 32 disposed in the case 2.

The drive shaft 4 has a length slightly shorter than the length of the case 2 in the longitudinal direction, and has one end near the inside of the motor box 31 and along the axis of the case 2. It is arranged. And the motor box 31
The output shaft 33 of the motor 3 and one end of the drive shaft 4 are connected via a plurality of gears 34.
3 is transmitted to the drive shaft 4.

As shown in FIG. 2, the moving member 5 is roughly divided into a nut portion 51 which is a portion screwed to the drive shaft 4.
And a connecting tubular portion 52 that is a portion connected to a bearing plate 7 described later. The nut portion 51 further includes
It is divided into a first nut portion 51a and a second nut portion 51b. The first nut portion 51a has a cylindrical portion 51a1 directly screwed to the drive shaft 4, and a flange portion 51a2 protruding outward from an upper edge of the cylindrical portion 51a1. A cylindrical portion 51b1 having an inner diameter fitted to the outer periphery of the cylindrical portion 51a1 of the first nut portion 51a, and protruding outward from the upper end edge of the cylindrical portion 51b1 and bent downward in the middle. And a flange portion 51b2 having a substantially inverted L-shaped cross section. Also, the first nut portion 51a
And the second nut portion 51b are connected to both flange portions 51a.
2 and 51b2 are integrally connected by a screw 51c inserted therethrough.

The connecting tube 52 is further divided into a first connecting tube 52a and a second connecting tube 52b. The first connecting cylinder 52a is connected to the cylinder 51 of the second nut 51b.
a cylindrical portion 52a1 having a thickness that can be inserted into a gap formed by an outer peripheral surface of b1 and an inner peripheral surface of a flange portion 51b2 having a substantially inverted L-shaped cross section; and a lower end edge of the cylindrical body portion 52a1. A flange portion 52a2 which protrudes outward and is formed in a size enough to fit within the inner diameter of a cylindrical vertical moving member 6 described later.
b has a cylindrical body portion 52b1 having a thickness such that it can be inserted into a gap formed by the outer peripheral surface of the flange portion 51b2 having a substantially inverted L-shaped cross section and the inner peripheral surface of the cylindrical vertical moving member 6. It is configured. Then, the first connecting cylinder 52a and the second
The connecting cylinder 52b is integrally connected with a bearing plate 7, which will be described later, to be in contact with the lower surface of the flange 52a2 of the first connecting cylinder 52a by screws 52c. In the present embodiment, the connecting tubular portion 52 is formed separately from the bearing plate 7 and is connected using screws 52c. However, a portion corresponding to the connecting tubular portion 52 is integrated with the bearing plate 7 in advance. May be used.

In the present embodiment, the nut 51
Between the inner peripheral surface of the flange portion 51b2 and the outer peripheral surface of the cylindrical body portion 52a1 of the first connecting cylindrical portion 52a. And a slight gap formed between the outer peripheral surface of the flange portion 51b2 of the second nut portion 51b and the inner peripheral surface of the cylindrical portion 52b1 of the second connecting cylindrical portion 52b. Viscous liquids 53 and 54 are sealed in the gaps, respectively.

The vertically moving member 6 has a predetermined length, is formed in a cylindrical shape, and has an outer periphery of the moving member 5, that is,
The second connecting tubular portion 52b is externally provided around the tubular body 52b1. The lower end surface has an outer diameter larger than the diameter of the vertically moving member 6, and has an insertion hole 7
a is disposed so as to abut the upper surface of the opened bearing plate 7. In the present embodiment, the vertically moving member 6
Is used as an embedded pole disposed in a parking lot or the like, as described above.

The up-and-down moving member 6 can of course be constituted by a single cylindrical body. However, when it is used as an embedded pole used in a parking lot or the like as in the present embodiment, In order to minimize damage to the vertical moving member 6 and the vehicle even if the vehicle collides with the vertical moving member 6 as a pole, as shown in FIG. It is arranged in series, and both are
It is preferable to have a structure connected by c.

As described above, the bearing plate 7 is connected and fixed to the connecting tubular portion 52 of the moving member 5 by the screw 52c.
At an appropriate position of the bearing plate 7, a rod-shaped guide member 8 is provided around the vertical moving member 6 and disposed in parallel with the vertical moving member 6, and the bearing plate 7 extends along the guide member 8. A guide cylinder 7b provided with a hole-shaped or groove-shaped guide receiving portion 7c so as to move up and down is integrally provided.

Here, the moving member 5, the vertically moving member 6, and the bearing plate 7 are of course provided outside the motor box 31. Of course, the guide member 8
Does not move up and down, so that the end may face the motor box 31 as long as it is disposed at least between the upper lid 21 of the case 2 and the motor box 31.

In FIG. 1, reference numeral 22 denotes the upper lid 2.
When the upper end of the guide cylinder 7b of the bearing plate 7 comes into contact with the limit switch 21, the drive of the motor 3 is stopped. Reference numeral 9 denotes a drain pump provided on the bottom surface of the case 1 for discharging rainwater or the like that has entered the case 1 to the outside of the case 1 through a drain pipe 91.

The vertically moving member control mechanism 1 according to the present embodiment
As shown in FIG. 1, the vertically movable member 6 is disposed in an appropriate position such as a parking lot in a state where the vertically movable member 6 is accommodated in the case 2. When it is desired to raise the vertical moving member 6 by operating the motor 3 to rotate in a direction in which the vertical moving member 6 is raised by a remote control switch or the like (not shown), the output shaft 33 and the gear 34 are used. The rotational force of the motor 3 is transmitted to the drive shaft 4, and the drive shaft 4 rotates in one direction. By this rotation, the moving member 5 screwed to the drive shaft 4 also tries to rotate, but the guide receiving portion 7c formed on the guide cylinder 7b of the bearing plate 7 connected and fixed to the moving member 5
However, the moving member 5 cannot be rotated because the guide member 8 is inserted through the fixedly disposed guide member 8.
Along with the bearing plate 7. That is, although the rotational force of the drive shaft 4 is directly transmitted to the nut portion 51, the rotational force of the drive shaft 4 is also connected to the connecting cylinder portion 52 via the viscous liquids 53 and 54 as described above. And tries to rotate with the nut portion 51. However, since the connecting tubular portion 52 is connected to the guide member 8 via the bearing plate 7, it is guided by the guide member 8 and rises. As a result, the vertically moving member 6 whose lower end surface is supported on the bearing plate 7 also rises, and projects out of the case 2 from the upper end 61 side. As a result, in the present embodiment, the vertically moving member 6 functions as a pole for stopping the vehicle. When the bearing plate 7 comes into contact with a limit switch 22 provided inside the upper cover 21 of the case 2, the driving of the motor 3 is stopped.

When lowering the vertically moving member 6, a remote control switch (not shown) is operated so that the output shaft 33 of the motor 3 rotates in the reverse direction. The driving force of the output shaft 33 is transmitted to the moving member 5 and the bearing plate 7 via the driving shaft 4 in the same manner as described above, and the bearing plate 7 descends along the guide member 8,
At the same time, the vertically moving member 6 is also lowered.

The vertically moving member 6 normally operates in this manner. However, if a vehicle tire or a heavy stone is located on the upper end surface of the vertically moving member 6 before ascending, the vertically moving member 6 is inadvertently raised by the remote control switch. If it is operated, the vertically moving member 6 cannot move up due to its weight. However, the motor 3 is running. Therefore, if no countermeasures are taken, there is a possibility that the motor 3 will be overloaded and burned unless the switch is turned off.
However, in the present embodiment, as described above, the moving member 5 is composed of the nut portion 51 and the connecting cylinder portion 52 connected via the viscous liquids 53 and 54 (so-called “viscus”). Coupling"). Therefore, when an unnecessarily large load is not applied to the vertically moving member 6, the nut portion 51 and the connecting cylinder portion 52 operate together. However, when the lifting operation of the vertically moving member 6 is restricted for some reason, Since a load that cannot rotate is applied to the connecting cylinder 52 of the moving member 5, the nut 51 directly connected to the drive shaft 4 is independently rotated within the connecting cylinder 52 and rotates with the drive shaft 4. Will do. That is, the drive shaft 4 and the nut portion 51 run idle in the connecting cylinder portion 52. Therefore, burn-in can be prevented without overloading the motor 3.

Although the above-described embodiment describes an example in which the present invention is applied to an embedded pole disposed in a parking lot or the like, it is possible to apply the present invention to a control mechanism for various vertical moving members. Of course.

[0022]

The vertically moving member control mechanism of the present invention normally transmits the driving force of the motor to the vertically moving member, but transmits the driving force of the motor when an excessive load is applied to the vertically moving member. Since the moving member capable of shutting off the motor is provided, damage to the motor in such a case can be prevented.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view illustrating a structure of a vertically moving member control mechanism according to an embodiment of the present invention.

FIG. 2 is a cross-sectional view showing a detailed structure of a moving member of a vertically moving member control mechanism.

[Explanation of symbols]

 Reference Signs List 1 vertical moving member control mechanism 2 case 3 motor 4 drive shaft 5 moving member 6 vertical moving member 7 bearing plate 8 guide member

Claims (2)

[Claims] 1. A motor, comprising: a drive shaft connected to an output shaft of the motor; a nut portion directly screwed to the drive shaft; and a connection cylinder portion directly connected to a bearing plate. A moving member connected to the connection cylinder via a viscous liquid,
A guide member fixedly disposed along the vertical movement direction and inserted into a guide receiving portion provided on the bearing plate, and supported by the bearing plate, and the bearing plate is moved up and down together with the moving member with the rotation of the output shaft. A vertically moving member control mechanism, comprising: a vertically moving member that moves up and down by moving. 2. The vertically moving member control mechanism according to claim 1, wherein said vertically moving member is an embedded pole.