JP2630833B2 - Switchgear - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a switchgear having a mechanism in which a rotating member rotates with respect to a fixed member via a shaft.

[Background Art] As this kind of opening and closing device, a horizontal axis type represented by a compact case for makeup, a radio cassette, a dashboard of an automobile, and the like, and a cabinet lid, an entrance door or a gate door are represented. There is a vertical axis type.

The horizontal type is further shown in FIG. 6 (a),
There are three types as shown in (b) and (c). FIG. 6 (a) shows that when the lid 100 is closed, the fixing body 101 is locked to the fixed main body 101 in a horizontal state by a suitable locking means (not shown). (Not shown) allows the lid 100 to pivot upward about the shaft 102 and open. In FIG. 1B, when the lid 100 is closed, the lid 100 is vertically locked to the fixed main body 101. When the lock is released, the lid 100 is urged upward about the axis 102 to rotate. It opens. Further, as shown in FIG. 3C, the lid 100 is locked to the fixed main body 101 in a vertical state when the lid 100 is closed, as in the case of FIG. And is opened downward by its own weight or biased.

As shown in FIG. 7, a vertical axis type
Alternatively, a door 104 is attached to the fixed body 103 of the cabinet so as to be openable and closable by a shaft 105, and the door 104 is automatically opened or closed by an appropriate urging means (not shown). I have.

[Problems to be Solved by the Invention] As described above, there are various types of conventional opening / closing devices, from small and lightweight cosmetic compact cases to large and heavy gates. There was no switchgear provided. This is because the urging force of the urging means required when the opening / closing device is different, such as a compact cosmetic case or gate, is different, and the mechanism is exposed due to design restrictions such as a compact cosmetic. This is because different devices have to satisfy different requirements, such as not being preferred.

The present invention has been made in view of the above circumstances,
Its purpose is to make it possible to reduce the size by incorporating a mechanical part, and to make the biasing force in the above mechanical part variable, so that it can be applied to small to large equipment regardless of the horizontal axis type or vertical axis type It is an object of the present invention to provide an opening / closing device having a simple mechanism.

[Means for Solving the Problems] To achieve the above object, the present invention provides a bearing member provided at a predetermined interval on a fixed member, and a bracket of a rotating member is located between the two bearing members. One of the bearing members is provided with a non-circular engagement hole, the other bearing member is provided with an adjustment shaft insertion hole, and the bracket is provided with a through hole coaxially. In an opening / closing device in which a shaft is inserted between the through holes and the rotating member rotates about the shaft with respect to the fixed member, the shaft is rotationally restricted by the rotation of the rotating member. A fixed shaft, a rotating shaft having an engagement piece and rotating by rotation of the rotating member, and a torsion bar bridged between the rotating shaft and the fixed shaft, wherein the fixed shaft is non-circular Non-circular engagement section is provided on one bearing member The rotation shaft is inserted into the through hole of the bracket of the rotating member, is coupled to each other in a non-circular shape, and is rotated by the rotation of the rotating member. The bracket is inserted between the rotary shaft and the fixed shaft through the through hole of the bracket, and the insertion hole of the other bearing member is engaged with the cylindrical portion and the engagement piece of the rotary shaft when rotated. An adjustment shaft having a mating engagement piece is inserted, mutually connected in a non-circular shape, and rotationally restrained.A cylindrical portion is provided at one end of the rotary shaft, and is inserted into the cylindrical portion of the adjustment shaft. The two cylindrical portions are filled with viscous grease, and the length of the non-circular engagement hole of the one bearing member, the length of the non-circular coupling portion between the rotating shaft and the bracket, and the other bearing Non-circular connection between the insertion hole of the member and the adjustment shaft Length after assembling the shaft attached to the fixed shaft and the rotating shaft at both ends of the torsion bar,
Apply viscous grease to the barrel of the rotating shaft and the barrel of the adjusting shaft, insert the two barrels into each other, assemble the adjusting shaft to the rotating shaft, assemble the sub-assembly, and connect the engaging portion of the fixed shaft to one bearing. Insertion method in which the non-circular portion of the rotating shaft does not engage with the non-circular portion of the insertion hole of the bearing member while the non-circular portion of the rotating shaft does not engage with the non-circular portion of the insertion hole of the bearing member. By inserting the sub assembly into the through hole of the bracket of the rotating member and the insertion hole of the other bearing member, rotate the adjusting shaft in this state, and lock the engaging piece of the adjusting shaft with the engaging piece of the rotating shaft. After the rotating shaft is rotated, torsion is applied to the torsion bar and an initial torque is applied, the non-circular portion of the rotating shaft is connected to the non-circular portion of the bracket through hole of the rotating member, and is formed to have a size that can be assembled. Characterized by .

In the present invention, the connection of the rotating shaft and the bracket of the rotating member in a non-circular shape is a serration connection between a ridge and a serration groove.

[Operation] The torsion bar applies a rotational urging force to the rotating member via the rotary shaft, and the urging force can be variably adjusted by increasing or decreasing the number of the torsion bars and the torsion. The viscous grease imparts viscous resistance to the rotation of the rotating member, thereby preventing a rapid rotation of the rotating member. Further, the shaft body can be inserted from the lateral direction and assembled by applying an initial torque to the torsion bar.

EXAMPLES Hereinafter, the present invention will be specifically described with reference to the accompanying drawings.

FIG. 1 is a sectional view of an embodiment of the present invention, and FIG. 2 is a perspective view thereof. As shown in FIG.
Are opened and closed by rotating with respect to the fixed member 2. This rotation is performed about the shaft body 3 as shown in FIG. The shaft body 3 includes a fixed shaft 4 and a rotating shaft 5
And a torsion bar 6 bridged over them.

FIG. 3 shows the structure of this shaft body, in which the fixed shaft 4 is on the left side,
The rotating shaft 5 is provided on the right side, and both ends of the torsion bar 6 are locked between them. The fixed shaft 4 has an engaging portion 41 having a non-circular cross section and a bearing portion 42 having a circular cross section.
Are formed integrally and continuously. As shown in FIG. 2, the engaging portion 41 is inserted into each of the non-circular engaging holes 21 formed in one of the bearing members of the fixed member 2 so that the fixed shaft 4 can rotate the rotating member 1. It is rotationally restrained against it. On the other hand, the support section 42 having a circular cross section is inserted into the bracket 11 of the rotating member 1 as shown in FIGS. 1 and 2, and supports the rotating member 1 during rotation. The rotating shaft 5 is the third
As shown in the figure, a plurality of projections 51 are provided on a connecting portion 52 formed on the outer surface, and a cylindrical portion 53 formed concentrically on the right side of the connecting portion 52, and these connecting portions 52 and A flange portion 54 is formed between the cylindrical portion 53 and the cylindrical portion 53. Here, an engagement piece 55 is formed on the flange portion 54 so as to protrude toward the cylinder portion 53. As shown in FIG. 1, the connecting portion 52 of the rotary shaft 5 is inserted into the rotary member 1, and a serration groove into which the ridge 51 is fitted is formed on the inner surface of the rotary member 1 at the inserted portion. At the same time as the insertion, the connection with the rotating body 1 is performed, and the rotating shaft 5 integrally rotates in the same direction with the rotation of the rotating member 1. Both ends of the torsion bar 6 are bent at substantially right angles, and the left end thereof is fixed to the fixed shaft 4.
The right end is buried in the rotating shaft 5 and is bridged between the two shafts 4,5. This allows the torsion bar 6 to rotate the rotating member 1.
Of rotation is being performed. Here, one or a plurality of torsion bars 6 are bridged between the fixed shaft 4 and the rotating shaft 5 in such a structure, and the number and diameter of the torsion bars 6 are changed as appropriate. In the present embodiment, the shaft 3 serving as the rotation center of the rotating member 1 is constituted by the combination of the fixed shaft 4, the rotating shaft 5 and the torsion bar 6 as described above, and the torsion bar 6 is rotated by the rotation of the rotating member 1. We are activating. Therefore, it has both the function of the center of rotation of the rotating member 1 and the function of urging the rotation of the member 1,
The structure is simplified, and the number of parts and the weight can be reduced. Further, by adjusting the number, diameter and torsion of the torsion bar 6, the rotation urging force can be changed.

In FIG. 1, reference numeral 7 denotes an adjusting shaft provided on the same axis on the right side of the shaft body 3 described above. As shown in FIG. 5, this adjusting shaft 7 has a concentric cylindrical portion 71 and a slit 72 formed on the right side of the cylindrical portion 71, and a plurality of ridges 73 on the outer surface on the right side. Are formed. The cylindrical portion 71 has a cylindrical portion of the rotary shaft 5.
53 are inserted into each other with a predetermined gap, and these gaps are filled with viscous grease 8 (FIG. 1) that performs a damper action. On the other hand, the ridge 73 is inserted into a serration groove formed in the other bearing member of the fixing member 2 as shown in FIG.
Fixed to In such a structure, when the rotating shaft 5 is rotated by the rotation of the rotating member 1, the viscous resistance of the viscous grease 8 filled between the cylindrical portion 53 of the coaxial 5 and the cylindrical portion 71 of the adjusting shaft 7 causes the rotating member 1 to rotate. Is performed so that the rotation of the motor becomes slow. In addition, since the viscous grease 8 that performs such a buffering action is provided on the same axis as the shaft body 3, the radial dimension is reduced, and the diameter of the rotation center of the rotating member 1 can be reduced. A tool such as a driver is inserted into the slit 27, and an initial torque is applied to the torsion bar 6 by operating the driver. An engagement piece 74 is formed on the left end side of the adjustment shaft 7,
The engaging piece 74 is engaged with the engaging piece 55 of the rotating shaft 5, and the engaging piece 74 presses the engaging piece 55 to rotate the rotating shaft 5 during the initial torque adjustment. Has become.

 Next, the assembly of this embodiment will be described.

After attaching both ends of the torsion bar 6 to the fixed shaft 4 and the rotating shaft 5 to assemble the shaft body 3, apply the viscous grease 8 to the cylindrical portion 53 and the cylindrical portion 71, and assemble the adjusting shaft 7 to the rotating shaft 5. The sub-assembly as shown in FIG. 4 is assembled. Next, the engaging portion 41 of the fixed shaft 4 is inserted into the engaging hole 21 of the fixed member 2, while the ridge 51 of the rotating shaft 5 is
Serration grooves of through holes 11 and ridges 73 of adjustment shaft 7
Inserts the sub-assembly into the through-hole of the bracket 11 of the rotating member 1 and the insertion hole of the bearing member of the fixed member 2 so that the sub-assembly does not engage with the serration groove of the insertion hole of the bearing member of the fixed member 2. Then, a tool such as a screwdriver is inserted into the slit 72 of the adjustment shaft 7 to rotate the adjustment shaft 7 and
The engaging piece 55 is pressed by 74 to rotate the rotating shaft 5.
As a result, the torsion bar 6 is twisted and an initial torque is applied. In this state, the rotating shaft 5 is serrated and connected to the rotating member 1 and the adjusting shaft 7 is serrated and connected to the fixed member 2 to complete the assembly. This assembly is performed with the rotating member 1 fully opened.

[Effects of the Invention] As described above, the present invention provides a shaft body that serves as a rotation center of a rotating member by bridging a torsion bar between a rotating shaft that rotates with the rotating member and a fixed shaft that is engaged with the fixed member. And the viscous grease that acts as a damper is filled on the axis of this shaft, so that the opening and closing mechanism and the shaft can be integrated and designed compactly, and the appearance is good because the mechanism is not exposed. is there.

In addition, according to the present invention, after attaching both ends of the torsion bar to the fixed shaft and the rotating shaft and assembling the shaft, viscous grease is applied to the cylindrical portion of the rotating shaft and the cylindrical portion of the adjusting shaft, and the both ends are mutually connected. Insert the adjusting shaft into the rotating shaft, assemble the sub-assembly, and insert the engaging portion of the fixed shaft into the engaging hole of one bearing member, while the non-circular portion of the rotating shaft is the non-circular portion of the bracket and the adjusting shaft. The sub-assembly is inserted into the bracket and the bearing member of the rotating member with an insertion dimension such that the non-circular portion does not engage with the non-circular portion of the insertion hole of the bearing member. After rotating the rotating shaft by locking the engagement piece of the adjusting shaft to the torsion bar to apply the initial torque, the non-circular portion of the rotating shaft is connected to the non-circular portion of the bracket of the rotating member. With The non-circular part of the adjusting shaft can be assembled by connecting it to another bearing member, so that it can be assembled by retrofitting by inserting it from the side and easy to assemble, and it can be used for both horizontal shaft type and vertical shaft type. Can be broadened.

Further, since the torsion bar is used as the rotation urging means of the rotating member of the present invention, the torsion bar can be used to open or close in the torsion direction of the torsion bar, and the urging force can be applied to the torsion bar mounting main body. , And can be easily controlled by increasing or decreasing the torsion, so that various effects are exhibited, such as being commonly applicable to small to large devices.

When the rotating shaft and the bracket of the rotating member, and the adjusting shaft and the bearing member of the fixed member are serration-coupled between the ridges and the serration grooves, the connection for restricting the rotation can be easily performed.

[Brief description of the drawings]

FIG. 1 is a sectional view showing an embodiment of the present invention, FIG. 2 is an exploded perspective view thereof, and FIGS. 3 (a), (b), (c) and (d) are front views showing the structure of a shaft. Figures, sectional views, left side views, right side views, FIGS. 4 (a), (b) and (c) are front views, sectional views, right side views, and FIGS. 5 (a) and (b) showing a sub-assembly. ) Is a front view, a sectional view, and FIGS. 6 (a) and (b) showing an adjustment shaft.
(C) is a perspective view showing a conventional horizontal axis type switchgear, and FIG. 7 is a perspective view showing a conventional vertical axis switchgear. DESCRIPTION OF SYMBOLS 1 ... Rotating member, 2 ... Fixed member, 3 ... Shaft, 4 ... Fixed shaft, 5 ... Rotating shaft, 6 ... Torsion bar, 8 ... Viscous grease (viscous substance).

Claims (2)

(57) [Claims] A fixed member is provided with a bearing member at a predetermined interval, a bracket of a rotating member is located between the two bearing members, and one of the bearing members has a non-circular engaging hole. The other bearing member is provided coaxially with an insertion hole for the adjustment shaft, and the bracket is provided coaxially with a through hole. A shaft is inserted between the engagement hole, the insertion hole and the through hole, and the rotating member is provided. The opening and closing device rotates about a shaft with respect to the fixed member, wherein the shaft has a fixed shaft that is rotationally restrained with respect to the rotation of the rotating member, and an engagement piece. A rotating shaft that is rotated by motion, and a torsion bar bridged between the rotating shaft and the fixed shaft. The fixed shaft is provided with an engaging portion having a non-circular cross section on one of the bearing members. The rotation shaft is inserted into the engagement hole having a non-circular shape. The torsion bar is inserted into the through-hole of the bracket of the rotating member, is coupled to each other in a non-circular shape, and is rotated by the rotation of the rotating member. The torsion bar passes through the through-hole of the bracket between the rotating shaft and the fixed shaft. An adjustment shaft having a cylindrical portion and an engagement piece that engages with the engagement piece of the rotating shaft when rotated is inserted into the insertion hole of the other bearing member, and is connected to each other in a non-circular shape. A cylindrical portion is provided at one end of the rotating shaft, inserted into the cylindrical portion of the adjusting shaft, viscous grease is filled between the two cylindrical portions, and the one bearing member is provided. The length of the non-circular engagement hole of the non-circular shape, the length of the non-circular connecting portion between the rotating shaft and the bracket, and the length of the non-circular connecting portion of the insertion hole and the adjusting shaft of the other bearing member are , Both ends of the torsion bar are fixed and rotating axes After assembling the shaft, apply viscous grease to the barrel of the rotating shaft and the barrel of the adjusting shaft, insert these two tubular parts into each other, assemble the adjusting shaft to the rotating shaft, and assemble the sub-assembly, The engaging portion of the fixed shaft is inserted into the engaging hole of one of the bearing members, while the non-circular portion of the rotating shaft has the non-circular portion of the through hole of the bracket and the non-circular portion of the adjusting shaft has the non-circular portion of the inserting hole of the bearing member. The sub-assembly is inserted into the bracket and bearing member of the rotating member by an insertion method that does not engage with the circular portion, and in this state, the adjusting shaft is rotated, and the engaging piece of the adjusting shaft is locked by the engaging piece of the rotating shaft. After rotating the rotating shaft by applying a torque to the torsion bar and applying an initial torque, the non-circular portion of the rotating shaft is coupled to the non-circular portion of the bracket through hole of the rotating member, and the non-circular portion of the adjusting shaft is Insertion hole of other bearing member An opening and closing device characterized in that it is formed in a size that can be assembled by being connected to a non-circular portion. 2. The non-circular coupling between the rotating shaft and the bracket of the rotating member and the non-circular coupling between the adjusting shaft and the bearing member are serration couplings between the ridges and the serration grooves. The switchgear according to claim 1, wherein