JP3112325U - Hinge device and opening / closing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a hinge device having improved assemblability (embeddability) and further having a dustproof function and ensuring the reliability of a buffer function, and a switchgear having the hinge device.
A hinge device for supporting an opening / closing member so as to be openable / closable with respect to a fixing member. A hinge body 8 composed of a support shaft 10 and a substantially cylindrical bearing portion 11 having a C-shaped cross section that is extrapolated to the support shaft 10 and is relatively rotatable, and is connected to the support shaft 10. A cover member 9 having a shaft side cover 13 and a bearing portion side cover 12 which are connected to and covers the bearing portion 11 and covers the hinge body 8 is provided. One end side of the bearing portion 11 is a fixed end held and fixed to the bearing portion side cover 12, and the other end side is a free end. When the support shaft 10 rotates relative to the bearing portion 11, the hinge body 8 reduces the inner diameter of the bearing portion 11 or reduces the inner diameter of the bearing portion by the frictional force between the bearing portion 11 and the support shaft 10. It is comprised so that an internal diameter may be expanded.
[Selection] Figure 3

Description

  The present invention relates to a hinge device for supporting an opening / closing member so that it can be opened / closed with respect to a fixed member, and an opening / closing device provided with the hinge device.

  Conventionally, it can be opened and closed on lids for various containers, doors for loading and unloading media in electrical appliances such as audio equipment, doors for vending machines, car dashboards, lids for pianos and organs, notebook computers, etc. Since it is sometimes desirable to open and close while applying appropriate friction and torque, a hinge device having an appropriate buffer mechanism (damper mechanism) between the fixing member side serving as the main body and the opening and closing member side serving as the lid or door Is provided.

  For example, for relatively large and heavy lids and doors, a hinge device having a shock absorbing mechanism using oil dampers or shaft friction is often used, and in the case of a lid or door that is not so large and heavy A hinge device having a buffer mechanism using a torsion spring or a thin plate spring is often used.

  By the way, in order to meet the demands for cost reduction and reliability in such a hinge device, there is a demand for improvement in assemblability (embeddability) to the device to which the hinge device is attached. In particular, in a miniaturized hinge device or the like, when dust or dust adheres, the buffer function as designed is not exhibited, and thus countermeasures are required.

  The present invention has been made in view of the above circumstances, and its purpose is to improve the assemblability (incorporability), and further to provide a dustproof function and ensure the reliability of the buffer function, An object of the present invention is to provide an opening / closing device provided with this.

In order to achieve the above object, a hinge device of the present invention is a hinge device for supporting an opening / closing member to be opened and closed with respect to a fixed member,
A hinge body comprising: a support shaft; and a substantially cylindrical bearing section having a C-shaped cross section that is provided so as to be extrapolated and relatively rotatable with respect to the support shaft;
A shaft-side cover connected to one of the fixing member and the opening / closing member and connected to the support shaft to cover at least a part of the support shaft, and the other of the fixing member and the opening / closing member And a cover member side cover that covers the at least part of the bearing portion by connecting to the bearing portion and covering the hinge body, and a cover member.
The bearing portion of the hinge body has one end side in the circumferential direction as a fixed end that is held and fixed to the bearing portion side cover, and the other end side in the circumferential direction is a free end that is not fixed to the bearing portion side cover. Become
The hinge body reduces the inner diameter of the bearing portion by the frictional force between the bearing portion and the support shaft when the support shaft rotates relative to the bearing portion, or the inner diameter of the bearing portion. It is characterized by being configured to expand.

According to this hinge device, when the support shaft rotates relative to the bearing portion, the hinge body reduces the inner diameter of the bearing portion by the frictional force between the bearing portion and the support shaft. Alternatively, since the inner diameter of the bearing portion is increased, the relative rotation of the support shaft is reduced by the reduced-diameter bearing portion, particularly when the support shaft is relatively rotated in the direction of reducing the inner diameter of the bearing portion. Movement is regulated. Therefore, the opening or closing operation of the opening / closing member with respect to the fixing member connected to the hinge body is restricted, and thereby the buffer function is satisfactorily exhibited.
Moreover, since the cover member which covers this hinge main body is provided, this cover member will come to exhibit a dustproof function especially by covering the rotation part in a hinge main body.
Furthermore, by providing the cover member with an engaging portion for attachment to the fixing member or the opening / closing member, the hinge device can be easily attached to the fixing member or the opening / closing member, and its assemblability (incorporability) ) Can be improved.

Further, in the hinge device, a torsion spring is wound around the outer peripheral side of the cover member, one end side of the torsion spring is connected to one of the fixing member and the opening / closing member, and the other end side is the fixing member. And the other of the opening / closing member, and may be biased in the opening direction of the opening / closing member.
In this way, particularly when the opening / closing member opens with respect to the fixing member, the hinge body is configured to receive the restriction, so that the opening / closing member is vigorously opened by the action of the torsion spring. It is suppressed.

An opening / closing device of the present invention is characterized by including the hinge device, a fixing member connected to the hinge device, and an opening / closing member.
According to this opening / closing device, since the hinge device that exhibits a good buffering function is connected to the fixing member and the opening / closing member, the opening / closing member is prevented from opening or closing vigorously.
In addition, since the hinge device has a dustproof function, it is possible to prevent the buffer function from being lowered due to dust and dust adhering thereto.
Furthermore, the assembling property of the hinge device is improved, so that the assembling property of the opening / closing device itself is improved.

In the hinge device according to the present invention, the opening or closing operation of the opening / closing member with respect to the fixing member is restricted by the hinge body, so that the buffering function is satisfactorily exhibited. An impact or the like occurs during the operation or the closing operation, thereby preventing an inconvenience such as an impact sound or a hand being caught.
Further, since the hinge device has a dustproof function, it is possible to prevent the buffer function from being lowered due to dust and dust adhering thereto, thereby improving the reliability.
Furthermore, since the attachment of the hinge device to the fixing member or the opening / closing member can be facilitated and its assemblability (incorporation) can be improved, the assembling property of the opening / closing device itself provided with the fixing member or the opening / closing member can be improved. Can be improved.

In the opening / closing device of the present invention, the hinge device prevents the opening / closing member from opening and closing vigorously, so that an impact or the like is generated when the opening / closing member is opened or closed. Therefore, it is possible to prevent inconveniences such as an impact sound or a hand being caught.
Further, since the hinge device has a dustproof function, it is possible to prevent the buffer function from being lowered due to dust and dust adhering thereto, thereby improving the reliability.
Furthermore, since the assembling property (incorporating property) of the hinge device is improved and the assembling property of the opening / closing device itself is also improved, the productivity can be improved.

Hereinafter, the present invention will be described in detail with reference to the drawings.
FIG. 1 is a view showing an embodiment in which the switchgear according to the present invention is applied to a storage case. Reference numeral 1 in FIG. 1 denotes a storage case. The storage case 1 has a case main body 2 and a door 3 attached to the front side of the case main body 2 so as to be openable and closable, and a hinge device for supporting the door 3 so that the case main body 2 can be opened and closed. 4 is configured.

  The case main body 2 serves as a fixing member in the present invention, and has a storage space inside. A pair of bearings 5 for attaching the hinge device 4 is formed on the front upper portion thereof. The bearing 5 is formed with a hole 5 a as shown in FIG. 2A, and engages with a notch 6 formed on the upper side of the door 3. Further, an insertion hole 7 for inserting the hinge device 4 is formed in the vicinity of the notch portion 6 so as to open to the side surface of the door 3 and further extend to the inside with the notch portion 6 interposed therebetween. Has been. The insertion hole 7 communicates with the hole 5 a of the bearing 5 when the bearing 5 is engaged with the notch 6. Under such a configuration, the hinge device 4 is inserted between the insertion hole 7 and further inserted into the hole 5a of the bearing 5, so that it is attached between the case body 2 and the door 3 to open and close the door 3. Support is possible.

  The hinge device 4 is an embodiment of the hinge device of the present invention, and includes a hinge body 8 and a cover member 9 covering the hinge body 8 as shown in FIG. As shown in FIG. 4, the hinge body 8 includes a support shaft 10, a substantially cylindrical bearing portion 11 having a C-shaped cross section that is provided so as to be extrapolated and relatively rotatable with respect to the support shaft 10. It is comprised from the metal or resin. The support shaft 10 is formed of a columnar portion 10 a that is formed in a columnar shape and is inserted into the bearing portion 11, and a connecting portion 10 b having a D-shaped cross section that protrudes outside without being extrapolated to the bearing portion 11. ing. The bearing portion 11 is attached to the cylindrical portion 10a so as to be slidable in the circumferential direction thereof, and on one end side in the circumferential direction, the bearing portion side cover 12 of the cover member 9 (see FIG. 3). ) And a fixed end 11a that is held and fixed. That is, the fixed end 11a is formed so as to extend outward, for example, outward in the tangential direction, with respect to the cylindrical portion 10a of the support shaft 10 on one end side of the bearing portion 11 formed in a C-shaped cross section. It has been done.

  As shown in FIG. 3A, the cover member 3 includes a shaft side cover 13 that covers a part of the support shaft 10, and the bearing part side cover 12 that covers at least a part of the bearing part. , Formed of resin or the like. The shaft-side cover 13 is formed with a through hole 13a along the central axis direction, a protrusion 14 for forced fitting is formed at the front end side, and along the circumferential direction in the through hole 13a on the rear end side. Thus, an engaging recess 13b that engages with the bearing portion side cover 12 is formed. As shown in FIG. 3 (b), the tip end portion on which the protruding portion 14 is formed is split into two parts so that it can be forcibly fitted into the hole 5a of the bearing 5 of the case body 2 as will be described later. It has become.

As shown in FIG. 3C, the through hole 13a has a tip end side (projection 14 side) that is substantially the same as the cross-sectional shape of the connecting portion 10b of the support shaft 10, that is, a D-shaped cross section. Is formed. Under such a configuration, the shaft-side cover 13 is connected and held and fixed in the through hole 13a without causing the support shaft 10 to idle.
Also, the distal end side of the shaft side cover 13 has a D-shaped cross-sectional shape like the distal end side of the through-hole 13a, so that the shaft side cover 13 is case body 2 as will be described later. The bearing 5 is held and fixed in the hole 5a of the bearing 5 without idling.
Further, as shown in FIG. 3A, the inner diameter of the rear end side of the through-hole 13a is larger than that of the front end side, and a part of the bearing portion 11 is inserted and covers this. The front end side of the bearing portion side cover 12 is also inserted.

The bearing portion side cover 12 has a bottomed cylindrical shape, and has a small diameter portion 12a inserted into the through hole 13a of the shaft side cover 13 with its distal end formed in a small diameter. An engagement convex portion 12b that engages with the engagement concave portion 13b is formed along the circumferential direction on the distal end side of the small-diameter portion, whereby the bearing portion side cover 12 serves as the shaft side cover. 13 is integrated to be rotatable.
Further, the bearing portion side cover 12 is configured to extrapolate the bearing portion 11 side of the hinge body 8 into the inner hole 12c and hold it.

That is, as shown in FIG. 3 (d), a groove-like cutout portion 15 extending in the tangential direction of the inner peripheral surface is formed in the inner hole 12c. As shown in FIG. 3A, the fixed end 11a of the bearing portion 11 is fitted into the portion 15 and is held and fixed therein. Further, the other end side in the circumferential direction of the bearing portion 11 is merely inserted into the inner hole 12c of the bearing portion side cover 12 and is held without being directly fixed. With this configuration, the bearing portion 11 has the fixed end 11 a held and fixed to the bearing portion side cover 12, and the other end, which is the opposite side, is not fixed to the bearing portion side cover 12. It is a free end provided.
Further, the bearing portion side cover 12 is formed with a large diameter portion 12 d on the rear end side, and an engagement protrusion 16 is formed on the tip end side of the large diameter portion 12. The large-diameter portion 12 and the engagement protrusion 16 are formed to engage with the insertion hole of the door 3 as will be described later.

  In the hinge device 4 having such a configuration, the hinge body 8 has a substantially cylindrical bearing portion 11 with a C-shaped cross section with respect to the support shaft 10 as shown in FIG. Since the tip end side of the shaft is connected to the shaft side cover 13 without spinning, the fixed end 11a of the bearing portion 11 is held and fixed to the bearing portion side cover 12, and the opposite side is a free end. When the side cover 13 and the bearing portion side cover 12 are relatively rotated, the support shaft 10 and the bearing portion 11 connected to each other are also relatively rotated.

  At this time, when the support shaft 10 is relatively rotated in the direction of arrow A in FIG. 4, the free end side (the fixed end 11 a and the fixed end 11 a) of the bearing portion 11 is caused by the frictional force between the support shaft 10 and the bearing portion 11. The opposite side) rotates with the support shaft 10, and thereby the inner diameter of the bearing portion 11 is enlarged. Then, the tightening force of the bearing portion 11 with respect to the support shaft 10 decreases, and the frictional force generated between them decreases, so that the relative rotation between the support shaft 10 and the bearing portion 11 is smooth. Become.

  On the other hand, when the support shaft 10 is relatively rotated in the direction of arrow B in FIG. 4, the free end side of the bearing portion 11 is rotated with the support shaft 10, thereby reducing the inner diameter of the bearing portion 11. Then, the tightening force of the bearing portion 11 with respect to the support shaft 10 is increased, and the frictional force generated between them is increased, so that resistance to relative rotation between the support shaft 10 and the bearing portion 11 is reduced. And smooth rotation is prevented.

  Further, as shown in FIGS. 2A and 2B, the torsion spring 17 is wound around the outer peripheral side of the cover member 9 in the hinge device 4 having such a configuration. The torsion spring 17 includes a coil portion 17a and end portions 17b and 17c thereof. One end portion 17b extends in the axial direction of the coil portion 17a, and the other end portion 17c extends in the radial direction of the coil portion 17. It is formed to extend. Then, with the bearing 5 of the case body 2 engaged with the notch 6 of the door 3, it is inserted into the insertion hole 7 of the door 3, and its one end 17 b is in the vicinity of the hole 5 a of the bearing 5. The storage case is inserted into the formed engagement hole 5b and engaged therewith, and the other end 17c is engaged with an engagement groove 7a formed continuously on the inner surface of the insertion hole 7. 2 is installed between the bearing 5 and the door 3.

Here, the torsion spring 17 is attached in a state where a twisting force is applied in a predetermined direction at the time of attachment between the bearing 5 and the door 3. Thereby, the force to return to the original becomes an urging force, and this urging force works in the direction to open the door 3.
Then, after attaching the torsion spring 17 between the bearing 5 and the door 3 in this way, the hinge device 4 is inserted into the insertion hole 7 from the protruding portion 14 side, as shown in FIG. As described above, the protrusion 14 is forcibly fitted into the hole 5a of the bearing 5 in a state where the coil portion 17a of the torsion spring 17 is inserted, and is locked in the hole 5a while being inserted therethrough. Thereby, the hinge apparatus 4 is attached to the bearing 5, and is attached in the insertion hole 7 in the state. However, with respect to the relative rotation direction of the support shaft 10 with respect to the bearing portion 11, the hinge device 4 is configured in advance so that the arrow B direction in FIG. This is attached in the insertion hole 7.

  At this time, the hole 5 a of the bearing 5 has a D-shaped cross section corresponding to the cross section of the shaft cover 13, so that the shaft cover 13 is formed in the hole 5 a of the bearing 5. They are connected in a fixed state without spinning. Further, the bearing portion side cover 12 is connected in a state of being held and fixed in the insertion hole 7 without idling by the engagement protrusion 16 being engaged with the engagement groove 7 a of the insertion hole 7. As shown in FIG. 2B, the bearing portion side cover 12 is formed with a step portion 12 e on the tip side from the engagement protrusion 16, and this step portion 12 e is the end portion 17 c of the torsion spring 17. Is supposed to hold down.

  Further, as shown in FIG. 1, the housing case 1 of the present embodiment is provided with a lock mechanism 20 for holding the door 3 in a closed state at the lower part of the front surface. As shown in FIG. 5A, the lock mechanism 20 includes a first engagement portion 21 provided in the door 3, a second engagement portion 22 provided in the case main body 2, and the second engagement portion 21. An operation unit 23 connected to the engagement unit 22 is provided.

  The first engagement portion 21 includes a coil spring 24 provided in an accommodation space (not shown) in the door 3 and a first engagement member 25 arranged with its rear end urged thereto. It is a thing. The first engagement member 25 is provided in the storage space so as to be able to advance and retreat, and a first locking portion 26 is formed at a tip portion thereof. The first engaging member 25 has an opening 25a on its side surface, and the opening 25a is engaged with a shaft 27 that protrudes into the housing space. Under such a configuration, the first engagement member 25 is urged by the coil spring 24 to resist the urging force of the coil spring 24 and the state in which the first locking portion 26 protrudes from the lower end side of the door 3. Thus, it can move between the state in which it is retracted into the accommodation space.

  The second engaging portion 22 is disposed in the case main body 2 with a coil spring 28 provided in an accommodation space (not shown) corresponding to the first engaging portion 21 and a rear end side thereof being urged. The second engaging member 29 is formed. The second engaging member 29 is provided so as to be able to advance and retract in the storage space, and a second locking portion 30 is formed at the tip of the second engaging member 29 so as to be detachably locked to the first locking portion 26. ing. Further, the operation portion 23 is connected to the front surface side of the second engagement member 29, and the second engagement member 29 is operated to move up and down by the operation portion 23.

With this configuration, the lock mechanism 20 is urged by the first engagement member 25 and the second engagement member 29 when the door 3 is closed as shown in FIG. Thus, the first locking portion 26 and the second locking portion 30 are locked, and thus the door 3 is locked without being opened.
Further, in order to open the door 3 from this state, the operation portion 23 is pressed and lowered. Then, the second engagement member 29 connected to the operation portion 23 also descends against the urging force of the coil spring 28, whereby the second locking portion 30 at the tip thereof becomes the first engagement of the first engagement member 25. The door 3 is unlocked and the door 3 is unlocked.

When the door 3 is unlocked in this way, as described above, the torsion spring 17 of the hinge device 4 exerts its urging force in the direction in which the door 3 opens. As a result, the door 3 rotates upward about the hinge device 4 as shown in FIG. 5B to open the case body 2.
At this time, the hinge device 4 is attached in a state where the arrow B direction in FIG. 4 coincides with the opening direction of the door 3 with respect to the relative rotation direction of the support shaft 10 with respect to the bearing portion 11. 3 is opened, and the bearing-side cover 12 is rotated relative to the shaft-side cover 13 along with this, and thereby the bearing portion 11 is rotated relative to the support shaft 10. The tightening force of the bearing portion 11 with respect to 10 is increased, and the frictional force generated between them is increased. Accordingly, resistance is generated in the relative rotation between the support shaft 10 and the bearing portion 11, and a buffer function is added to prevent smooth rotation, thereby preventing the door 3 from being vigorously opened.

Therefore, in the hinge device 4 of the present invention, it is possible to prevent inconveniences such as an impact sound and a hand being caught.
In addition, the hinge device 4 is configured to cover the hinge body 8 with the cover member 9 including the bearing portion side cover 12 and the shaft side cover 13, and thus has a dustproof function, so that dust and dust are prevented. It is possible to prevent the buffer function from being deteriorated due to adhesion, thereby improving the reliability.
Further, by providing the cover member 9 with an engaging portion for attachment to the case main body 2 (fixing member) and the door 3 (opening / closing member), the case main body 2 (fixing member) and the door 3 (opening / closing member). Since the attachment of the hinge device 4 to the housing can be facilitated and its assemblability (assembleability) can be improved, the assemblability of the storage case 1 (opening / closing device) itself can be improved.

Further, in the storage case 1 (opening / closing device) of the present invention, the hinge device 4 prevents the door 3 (opening / closing member) from opening vigorously. As a result, it is possible to prevent inconveniences such as an impact sound or a hand being caught.
Moreover, since the hinge apparatus 4 has a dustproof function, the fall of the buffer function by dust and dust adhering can be prevented, thereby improving the reliability.
Further, since the assemblability (incorporability) of the hinge device 4 is improved, the assemblability of the storage case 1 itself is also improved, so that the productivity can be improved.

  In addition, this invention is not limited to the said embodiment, A various change is possible unless it deviates from the summary of this invention. For example, in the above embodiment, the torsion spring 17 is wound around the outer peripheral side of the cover member 9 to automatically open the door 3 upward, but the door is configured to open downward. In some cases, it is not necessary to use a torsion spring because the opening operation can be automatically performed by its own weight.

  In the above embodiment, an example in which the hinge device of the present invention is applied to a storage case has been shown, but besides this, for example, lids for various containers, doors for taking in and out media in electrical appliances such as audio equipment, The hinge device of the present invention can be applied to various opening / closing devices such as a door of a vending machine, a dashboard of a car, a lid of a piano or an organ, a notebook computer, and the like.

It is a schematic block diagram for demonstrating one Embodiment at the time of applying the hinge apparatus of this invention to a storage case. (A) is a perspective view which shows the principal part of a hinge apparatus and its attachment part, (b) is a principal part sectional side view which shows the state in which the hinge apparatus was attached. (A) is a side sectional view of the hinge device, (b) is a side view of the hinge device, (c) is a front view of the hinge device, and (d) is a transverse sectional view of the bearing side cover. It is a perspective view of a hinge main body. It is principal part sectional drawing for demonstrating a locking mechanism, Comprising: (a) is a figure which shows the locked state, (b) is a figure which shows the state by which the lock | rock was cancelled | released.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Storage case (opening-closing member), 2 ... Case main body (fixing member), 3 ... Door (opening / closing member), 4 ... Hinge apparatus, 8 ... Hinge main body, 9 ... Cover member, 10 ... Support shaft, 11 ... Bearing part 12 ... Bearing side cover, 13 ... Shaft side cover, 17 ... Torsion spring

Claims (3)

A hinge device for supporting an opening / closing member to be openable / closable with respect to a fixing member,
A hinge body comprising: a support shaft; and a substantially cylindrical bearing section having a C-shaped cross section that is provided so as to be extrapolated and relatively rotatable with respect to the support shaft;
A shaft-side cover connected to one of the fixing member and the opening / closing member and connected to the support shaft to cover at least a part of the support shaft, and the other of the fixing member and the opening / closing member And a cover member side cover that covers the at least part of the bearing portion by connecting to the bearing portion and covering the hinge body, and a cover member.
The bearing portion of the hinge body has one end side in the circumferential direction as a fixed end that is held and fixed to the bearing portion side cover, and the other end side in the circumferential direction is a free end that is not fixed to the bearing portion side cover. Become
The hinge body reduces the inner diameter of the bearing portion by the frictional force between the bearing portion and the support shaft when the support shaft rotates relative to the bearing portion, or the inner diameter of the bearing portion. A hinge device configured to enlarge the size of the hinge device.   A torsion spring is wound around the outer peripheral side of the cover member, one end of the torsion spring is connected to one of the fixing member and the opening / closing member, and the other end is the other of the fixing member and the opening / closing member. The hinge device according to claim 1, wherein the hinge device is urged in a direction to open the opening / closing member. An opening / closing device comprising the hinge device according to claim 1, a fixing member connected to the hinge device, and an opening / closing member.

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