JP2571642Y2 - Bearing device with adjustable balance - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bearing device capable of easily and quickly adjusting the elasticity of a balance spring for winding a shutter from the outside of a shutter case in a lightweight shutter or the like.

[0002]

2. Description of the Related Art In current shutters, especially manual lightweight shutters, a balance spring is provided inside a hoisting drum to wind up a shutter curtain.
Give the balance spring a twist in advance,
By utilizing the reaction force, the force required when winding the shutter curtain is reduced.

[0003]

However, in the case of the lightweight shutter having the above-described structure, the shutter curtain is opened and closed by using the balance spring for the hoisting drum after use for a while or by increasing the resistance due to the rust of the balance spring. In operation, the operation force may become heavy.

Therefore, it is necessary to rewind the balance spring to re-twist it. To rewind the balance spring, remove the cover of the shutter housing case above the shutter and wind the curtain. They are taking or twisting the shaft.

In the above adjustment of the spring, it is extremely troublesome to remove the cover of the storage case of the shutter curtain and then performing the work of adding the spring, which is troublesome and consumes a lot of work time, and also requires a worker. There are many issues such as the need for two or more people. As described above, the applicant has developed a device that adjusts the elasticity of the balance spring for winding the shutter in the shutter case, but has a problem that it is difficult to easily adjust the elasticity.

[0006]

The inventor of the present invention has made intensive studies to solve the above-mentioned problems. A rotation adjusting body having a transmission part, a transmission part having a semi-columnar transmission part which can be brought into contact with the transmission part, a bearing casing fixed in a shutter case, and both ends of a pressing coil part A coil fixing body that is bent more centrally and has an appropriate angle difference to provide a locking portion, and a coil fixed body provided between the transmitting portion and the transmitted portion. It is exposed to the outside of the case, the shaft end and the transmitted body are connected and fixed, and the coil fixed body is released from being pressed and fixed in the bearing casing by reducing the coil fixed body by appropriate rotation of the hoisting shooting. Adjustable balanced bearings provided By was location, even without a troublesome work such as removing the cover of the storage case, can the added winding of reduced balance spring elasticity very easily and quickly, which solves the above problems.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS.

The bearing device A according to the present invention is provided at the widthwise end of the upper shutter housing case of the shutter device as shown in FIG. 1, and mainly includes a rotation adjusting member A ₁ , a transmitted member A ₂ , First, as shown in FIG. 5, the rotation adjusting body A ₁ includes the coil fixing body 8 and the bearing casing 9, and the transmission unit 2 having the winding pressing surface 2 a on one side surface of the disc-shaped flange plate 1. On the other side of the flange plate 1, a shooting 3 for hoisting is formed.

As shown in FIG. 5, the transmitting portion 2 is formed specifically in a semi-cylindrical shape, and both end surfaces thereof are wrapped pressing surfaces 2.
a, 2a, and the wrapped pressing surfaces 2a, 2a
The locking portions 8 at both ends of the coil fixing body 8 are flat.
b and 8b are lockable shapes, and the hoisting shot 3 is formed in a hexagonal shape, and is formed in a shape that is easy to use tools such as a spanner and a wrench.

[0010] the transmitting member A _2, as shown in FIG. 5, one locked face on the side 5a of the flange plate 4, the transmission unit 5 having a 5a is formed, also on the other side of the flange plate 4 A shaft connecting portion 6 for a shutter curtain is formed,
The transmission unit 5, the rotation from the rotating adjustment member rotation adjusting member A ₁ I transmission unit 2 and the combination of A ₁ is transmitted.

The transmitted portion 5 has a semi-cylindrical shape, specifically, a substantially fan-shaped column shape, and its both ends are flat locked surfaces 5a, 5a.
a, and the engaging portions 8b, 8b of the coil fixing body 8 are shaped to be able to be engaged.

Further, be those in the transmitting portion 5 of the transmission member A ₂ connecting shaft shaped portion 7 is formed, which can be as easy to perform the contact connection between the transmitting portion 2 of the rotary adjustment member A ₁ Te, in particular, in the embodiment shown in FIG. 5, a connecting shaft shaped portion 7 and the transfer unit 5 is fixed formation, transfer the rotational adjustment member a ₁ 2
The semi-cylindrical inner peripheral side coincides with the outer peripheral surface of the connecting shaft 7, and the transmitted portion 5 is arranged in the circumferential direction at a slight angle with respect to the transmitting portion 2 via the connecting shaft 7. Can be slid.

The connecting shaft 7 is, as shown in FIG.
EXAMPLE formed in the transmission portion 2 of the rotary adjustment member A ₁ also exist, in the embodiment, the transmission unit 5 of the transfer member A ₂ will be formed into a semi-cylindrical shape.

As shown in FIG. 5, the coil fixing body 8 is provided at both ends of a pressing coil portion 8a formed in a coil spring shape with locking portions 8b, 8c toward the center of the pressing coil portion 8a.
8b, specifically, the locking portions 8b, 8b are extended from both ends of the pressing coil portion 8a by steel wires forming the coil fixing body 8, become linear, and have a center at the center of the pressing coil portion 8a. And the locking portions 8b,
The diameter of the pressing coil portion 8a expands and contracts by 8b.

The locking portion 8b of the coil fixing member 8, 8b is wound pressing surface 2a of the rotary adjustment member _{A 1} as described above, 2a and the locking surface 5a of the transfer body _{A 2,} locking the 5a be one which, rotating adjusting body a ₁ of the winding pressing surface 2a, the locking portion 8b along the winding direction of the pressing coil portion 8a is locked so as to move relative to the 2a, the pressing coil at this time Part 8a
Becomes smaller in diameter.

The locking portions 8b, 8b of the coil fixing body 8
There when brought into abutment against the to-be locking surface 5a, 5a of the transmission member A ₂ is the winding direction of the pressing coil portion 8a is locked so as to move in the opposite direction, the diameter of the pressing coil portion 8a is increased in this case Become like

As shown in FIGS. 3 and 6, etc., the bearing casing 9 has a pressed surface 9a having a shape of a circumferential inner wall, and the coil fixed body 8 is mounted on the pressed surface 9a. However, when the pressing coil portion 8a of the coil fixing body 8 is not subjected to an external force, the pressing coil portion 8a always has a pressing force and is in contact with the pressed surface 9a.

Reference numeral B denotes a hoisting drum. As shown in FIGS. 1 and 2, a drum 11 is rotatably connected to a shaft 10, and a balance spring 12 is built in the drum 11. Have been.

The balance spring 12 has one end fixed to the shaft 10 and the other end fixed to the drum 11. When the shaft 10 is rotated with the drum 11 stopped, the balance spring 12 is torsionally applied. A shutter curtain 13 is wound around 11.

Reference numeral 14 denotes a shutter case,
The shaft 10, the drum 11, the wound shutter curtain 13 and the like are housed therein, and the shutter case 14
The bearing device A of the present invention is incorporated at the end portion in the width direction, and reference numeral 15 denotes a cover of the bearing casing 9,
Hoisting knob 3 of the rotary adjustment member A ₁ protrudes to the outside from the through hole of the lid 15, has a configuration that can be operated from the outside of the shutter case 14 hoisting knob 3.

[0021] To perform adding winding to provide torsional its balance spring 12, the rotational adjustment member A _1, it is intended to rotate in the winding direction of the balance spring 12 via the hoisting knob 3 The rotation of the rotation adjusting body A ₁ is transmitted to the transmission unit 2.
The rotation is transmitted to the transmitted part 5 of the transmitted body A ₂ via
Rotates shaft 10 which is directly connected to the transmission body A _2, it is given a torsion balance spring 12.

[0022] Here, the coil fixing member 8 which is furnished to the bearing casing 9 with the rotation of the rotating adjustment member A _1, as shown in FIG. 7, the engaging portions 8b, 8b is wound pressing surface 2a, 2a, the pressing coil portion 8a moves in the winding direction of the pressing coil portion 8a, and slightly reduces the diameter of the pressing coil portion 8a. The pressing coil portion always in contact with the pressed surface 9a of the bearing casing 9 with a strong pressing force. reducing the pressing force of 8a, the coil fixing member 8 is also rotated together with the transmission member a _2.

[0023] Given a torsion amount sufficient balance spring 12, when stopping the rotation of the rotary adjustment member A _1, as shown in FIG. 8, the shaft 10 is balanced by the elastic reaction force of the balance spring 12 tries to rotate in the torsional direction opposite to the direction of the spring 12, the locking surface 5a of the transfer body a _2, 5a of the coil fixing member 8 engaging portion 8b, 8
b is pressed in the direction opposite to the winding direction of the pressing coil portion 8a, thereby acting in a direction in which the diameter of the pressing coil portion 8a increases.
abuts at very strong pressing force to a, the engaging portion 8b of the coil fixed body 8, 8b is without the role of the stopper, the locking surface 5a of the transfer body A _2, abuts the 5a, to fixed state stopping the rotation of the inside bearing casing 9 of the transmitting member a _2.

Further, in the case of rewinding, the opposite direction of adding the winding, the rotational adjustment member A _1, via the hoisting knob 3 is intended to provide rotation to the balance spring 12,
Rotation of the rotary adjustment member A ₁ via the transmitting unit 2 the transmitting member A ₂
The rotation is transmitted to the transmission unit 5, to rotate the shaft 10 is directly connected to the transmission body A _2, the balance spring 12
Can be rewound.

[0025]

In the present invention, according to the invention], facing the shaft 10 which is elastically installed the balance spring 12, the hoisting knob 3 and the rotary adjustment member A ₁ having a semi-cylindrical transmission portion 2, the transmitting unit 2 It is a mediator a _2, a bearing housing 9 which is fixed to the shutter case 14, and an appropriate angle bent toward the center than the pressing coil portion 8a ends with the transmission part 5 of the abutment can be semi-columnar and A coil fixing member 8 provided between the transmitting portion 2 and the transmitted portion 5 with locking portions 8b, 8b provided with a difference; , The end of the shaft 10 and the receiver A ₂ are connected and fixed, and the coil fixed body 8 is reduced in the bearing casing 9 by reducing the coil fixed body 8 by appropriate rotation of the hoisting shooting 3. Adjustable balance provided so that it can be released from pressing and fixing By was receiving device, first of all
The balance spring 12 can be easily (quickly twisted) or unwound from the outside of the shutter case 14, and secondly, the structure can be extremely simplified. It works.

These effects will be described in detail. The coil fixed body 8 is housed in a bearing casing 9 in a fixed state, and the coil fixed body 8 is transferred to the transmitting portion 2 and the transmitted portion 5.
And the coil fixed body 8 is provided so as to be releasable from the pressing and fixing in the bearing casing 9 by reducing the coil fixed body 8 by appropriate rotation of the hoisting shooting 3. rotation of the knob 3, with important its rotation to the transmitting member a _2, to reduce the diameter of the pressing coil portion 8a is transmitting portion 2 by pressing the locking portion 8b, the 8b, pressing pressure coil unit 8a
Of pressing force decreases. Thereby, which makes it easy to convey the rotation from the outside of the shutter case 14 to the transmitted body A _2, rotates the rotating adjustment member A _1, the drum 11 from the shaft 10 via the transmission member A ₂ The torsion can be given to the balance spring 12 inside (winding up).

[0027] Here, when the release the rotational adjustment member A ₁ is the elastic reaction force of the balance spring 12 of the shaft 10, by which the transmitting member A ₂ is rotated in the reverse direction, the target transmission unit 5 Are the locking portions 8b of the coil fixing body 8,
8b at the same time as contacting the coil fixed body 8b.
The pressing coil portion 8a is expanded, and the pressing coil portion 8a is pressed into the bearing casing 9, so that the shaft 10
Can be fixed. As described above, the elasticity of the balance spring 12 can be provided without removing the cover of the upper shutter case 14, so that it is not troublesome and can be made safe.

Furthermore, in the present invention, in a direction opposite to the sum winding described above, can only rewind very simply by rotating the rotating adjustment member A _1.

[Brief description of the drawings]

FIG. 1 is a front view showing a partial cross section of a shutter using the present invention.

FIG. 2 is a sectional view of a main part of the shutter provided with the present invention.

FIG. 3 is an enlarged vertical sectional view of a main part of the present invention.

FIG. 4 is an enlarged cross-sectional view of a main part of the present invention.

FIG. 5 is an exploded perspective view of a main member of the present invention.

FIG. 6 is an enlarged vertical sectional view of a main part showing an operation state of the present invention.

FIG. 7 is an enlarged cross-sectional view of a main part showing an operation state of the present invention.

FIG. 8 is an enlarged cross-sectional view of a main part showing an operation state of the present invention.

FIG. 9 is an enlarged cross-sectional view of a main part showing another embodiment of the present invention.

[Explanation of symbols]

A ₁ : rotation adjusting body A ₂ : transmitted body 2 ... transmission section 3: hoisting shooting 5 ... transmitted section 8 ... coil fixed body 8 a ... pressing coil section 8 b ... locking section 9 ... bearing casing 10 ... shaft 12 ... Balance spring 14 ... Shutter case

Claims (1)

(57) [Scope of request for utility model registration] 1. A a shaft of the balance spring and elastically mounted, a rotary adjustment member having a mito semi cylindrical transmission portion Ta for the upper winding, opposite to the abutment can be semi-pillar shaped object transmitted to the transmitting unit and the transmission body having a section, a bearing casing that is fixed to the shutter case, an engagement portion having and appropriate angular difference bent toward the center than the pressing coil section ends provided, and wherein
A coil fixed body provided between the transmitting portion and the transmitted portion, and the hoisting image is exposed outside the shutter case.
And the shaft end and the driven body are connected and fixed .
A balance-adjustable bearing device characterized in that the coil fixed body is releasably released from being pressed and fixed in the bearing casing by reducing the coil fixed body by appropriate rotation of the upper shooting .