JPH0888478A - Cover locking mechanism - Google Patents

Abstract

PURPOSE: To determine the position of a cover to a main body section on a basis of an edge section of the cover which is located at a place opposite to an secured edge of the cover by providing the cover with a member for positioning the cover to the main body and fitting members which are to be fitted in with counterparts of the main body and are located near the edge of the cover which is located opposite to the secured edge to prevent the cover from separated from the main body. CONSTITUTION: An upper edge section of a cover 8 is moved towards a main body section 1 and projections 12, 12 are inserted into positioning holes 3, 3. When the cover 8 is connected to the main body section 1 and the main body is closed, positioning sections 14, 14 of the positioning projections 12, 12 are located on positioning face sections 4, 4. At that time, the position of the cover 8 to the main body 1 is determined on a basis of the positions of the positioning sections 14 and the positioning faces 4 or part of the cover 8 which is near an upper edge section.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lid locking mechanism for locking a lid for opening and closing an opening of a body with respect to the body.

[0002]

2. Description of the Related Art Conventionally, a casing device has been proposed which has a casing-like main body portion having an opening portion and a lid body which is locked to the main body portion to open and close the opening portion. In this case device,
Various objects and devices are stored in the main body through the opening.

In the case device, the lid is supported by the main body via a lid locking mechanism so that the opening can be opened and closed.

The lid locking mechanism includes a hinge for rotatably mounting one edge of the lid near one side of the main body and an edge of the other side of the lid. Some include an engaging means for engaging the vicinity with the other side portion of the main body. The engagement means prevents the lid body from being separated from the main body portion. As this engaging means, a fitting member that fits and engages with a fitting hole provided in the main body can be used.

That is, the lid is rotatable via the hinge and can open and close the opening when the engagement of the lid with the main body is released. . Then, the lid body maintains the closed state of the opening by being engaged with the main body by the engaging means in the state where the opening is closed.

[0006]

In the case device as described above, the main body and the lid may be made of different materials. For example,
The main body may be made of a metal material such as iron or aluminum, and the lid may be made of a synthetic resin material such as so-called ABS resin.

As described above, when the materials forming the main body and the lid are different from each other, the main body and the lid have different coefficients of thermal expansion. Then
When the environmental temperature changes, the main body and the lid are
The amount of dimensional change is different from each other.

Such a difference in the amount of dimensional change appears in the engaging means because the main body and the lid are engaged at the hinge. Then, the difference in the amount of change in the dimension appears as a larger distance as the distance from the hinge to the engaging means increases. For example, the difference in the amount of change in size can be used when the main body is made of iron or aluminum, the lid is made of ABS resin, and the distance from the hinge to the engaging means is about 1 m. Compensation temperature from -20 ° C to + 50 ° C (15 ±
When the temperature is 35 ° C., it reaches about 4 mm (± 2 mm).

That is, in this case, the engaging means is 1
It should be possible to engage the lid with the main body even when the size of the lid with respect to the main body changes by ± 2 mm with respect to the standard engagement state at 5 ° C. It will be.

Therefore, in the lid locking mechanism as described above, there is a possibility that the engaging means cannot engage the lid with the main body when the environmental temperature changes. Further, in order to enable the engagement means to engage with the main body portion of the lid body even if the environmental temperature changes, the structure of the engagement means is complicated and the size is increased. The Rukoto.

Further, particularly when the hinge is arranged near the lower edge of the lid and the engaging means is arranged near the upper edge of the lid, the ambient temperature Changes in the position of the upper edge of the lid with respect to the main body, which may cause a problem in terms of appearance and design.

Therefore, the present invention has been proposed in view of the above circumstances, and a lid body made of a material different from that of the main body portion is locked to the main body portion, and the main body is formed by the lid body. A mechanism that enables opening and closing of an opening provided in the cover, and always maintains a good engagement state of the lid with the main body even if the environmental temperature changes within the compensation temperature. It is an object of the present invention to provide a lid locking mechanism adapted to be capable of performing the above.

[0013]

In order to solve the above-mentioned problems and achieve the above-mentioned object, a lid locking mechanism according to the present invention is provided in the main body portion in the vicinity of one edge of the lid. A hooked member that engages with the hooked portion and restricts the movement of the one edge portion of the lid member in a direction orthogonal to the direction from the one edge portion to the other edge portion of the lid member. A member and a direction extending from the other side edge portion to the one side edge portion of the lid body by engaging a positioning portion provided in the main body portion in the vicinity of the other side edge portion of the lid body. The member to be positioned for positioning the lid body with respect to the main body portion, and the engaging portion provided on the main body portion that is disposed near the edge portion on the other side of the lid body And an engagement means for preventing separation from the main body.

In the "direction orthogonal to the direction extending from the one edge of the lid to the other edge of the lid",
Both the direction away from the main body and the direction along the surface of the main body are included.

Further, according to the present invention, in the lid locking mechanism, the lid is formed in a substantially rectangular flat plate shape, and the lid is provided with an edge portion on one side of the lid. The direction extending to the edge portion on the other side is the longitudinal direction of the lid body.

Further, according to the present invention, in each of the lid locking mechanisms described above, the hooked member is hung when the lid is positioned by the engagement of the positioning member of the positioned member. In a state in which the engagement with the stopper is maintained, the lid and the main body within the compensation temperature range in the direction from the edge on one side of the lid to the edge on the other side with respect to the latch. It is configured to be movable over a distance equal to or larger than the difference in dimensional change between the lid and the main body caused by the difference in coefficient of thermal expansion of the section.

[0017]

In the lid locking mechanism according to the present invention, the lid is provided near the edge on one side of the lid and is engaged with the latching portion provided on the main body so that the lid is locked from the edge on the one side. A latching member that restricts movement of the one edge portion of the lid body in a direction orthogonal to the direction extending to the other edge portion of the body, and a hook member disposed near the other edge portion of the lid body, A positioned member that engages with a positioning portion provided on the main body and positions the lid with respect to the main body in a direction extending from the other edge to the one edge of the lid; Since the lid means is provided near the other edge portion of the lid body, the engaging means for engaging with the engaging portion provided on the body portion to prevent the lid body from being separated from the body portion is provided. The position of the lid with respect to the main body is determined with reference to the other edge of the lid.

Further, in the lid locking mechanism, the lid is formed in a substantially rectangular flat plate shape, and an edge from one edge of the lid to the other side of the lid. If the direction across the portion is the longitudinal direction of the lid, positioning with respect to the main body with respect to the other edge of the lid with respect to the direction in which a difference in size between the lid and the main body is likely to occur Can be done.

Further, in each of the lid locking mechanisms, the hooked member is engaged with the hooking portion in a state where the lid is positioned by the engagement of the positioning member with the positioning portion. While maintaining the above, the thermal expansion of the lid body and the main body portion with respect to the hook portion in the direction extending from the edge portion on one side of the lid body to the edge portion on the other side within the compensation temperature range. In the case of being movable over a distance equal to or greater than the difference in dimensional change between the lid and the main body caused by the difference in the ratio,
The position of the lid body with respect to the main body portion is determined with reference to the edge portion on the other side of the lid body, and the engagement of the engagement portion with the engagement member is maintained within a compensation temperature range.

[0020]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Specific embodiments of the present invention will be described below with reference to the drawings.

As shown in FIG. 1, the lid locking mechanism according to the present invention includes a housing-shaped main body 1 having an opening and a lid 8 which is locked by the main body 1 to open and close the opening. It is used in a casing device having a.

In this case device, various objects and devices, for example, electronic equipment such as a disc changer device, are housed in the space 2 in the main body 1 through the opening.

The lid locking mechanism according to the present invention is such that, in the casing device, the lid 8 is supported with respect to the main body 1 and the opening can be opened and closed.

The main body 1 is made of a metal material such as iron or aluminum. The main body portion 1 is formed in a vertically long casing shape, and a front surface portion thereof is an opening portion over substantially the entire surface.

The lid 8 is made of a synthetic resin material such as so-called ABS resin and is formed into a vertically long rectangular substantially flat plate corresponding to the opening of the main body 1.

As shown in FIG. 2, a pair of left and right locked claws 16, 16 serving as a locked member are provided near the edge of one side of the lid 8, that is, near the lower edge. It is projected from the part toward the rear side. These locked claws 16, 16
Are flat plate-shaped claws that are each horizontal, and the front end sides thereof are widened portions 17 and 17 widened toward both sides.

The locked claws 16 and 16 are locking claws 6 which serve as locking parts provided on the lower side of the front surface of the main body 1.
Hang on to. The locking claw 6 is projected from the lower part of the opening as a horizontal flat plate-like claw toward the front side, and the tip side part thereof is bent at an approximately right angle toward the upper side. Has been done. The locking claw 6 has a pair of left and right cutouts 7, 7 corresponding to the locked claws 16, 16. The notches 7 and 7 are formed to have a width corresponding to the width of the base end side portions of the locked claws 16 and 16, respectively.

That is, the hooks 16 and 16 to be hooked are
When the base end side portion is fitted into the notch portions 7, 7 from above, the widened portions 17, 17 are attached to the hook claws 6.
It is located on the rear side of the tip end side portion of and is engaged by the retaining claw 6.

When the engaged claws 16 and 16 are fitted into the cutouts 7 and 7 from above and are engaged with the engaging claws 6, the edge of the lid 8 on one side. From the part 8
The movement of the lower edge portion of the lid body 8 with respect to the main body portion 1 is restricted in a direction orthogonal to the direction (that is, the up-down direction) across the edge portion on the other side, that is, in the front-rear direction and the left-right direction. At this time, the locked claws 16 and 16 are capable of moving the lid 8 with respect to the main body 1 in the vertical direction.

Then, in the vicinity of the edge portion on the other side of the lid body 8,
That is, a pair of left and right positioning projections 12, 12 serving as members to be positioned are provided in the vicinity of the upper edge portion so as to project rearward from the back surface portion of the lid body 8.

These positioning protrusions 12, 12 are fitted and engaged in correspondence with a pair of left and right positioning holes 3, 3 which serve as positioning portions provided on the upper side portion of the main body 1, and the positioning protrusions 12, 12 of the lid 8 are attached. The positioning is performed with respect to the main body 1 in the vertical direction.

The lower ends of the positioning protrusions 12 and 12 are tapered toward the front end of the positioning protrusion 12 so that the thickness of the positioning protrusions 12 and 12 is reduced toward the front end. Then, these positioning protrusions 12, 12
The lower surface portion on the base end side of is a positioning portion 14.

The positioning holes 3 and 3 are formed on the front surface of the main body 1 above the opening and with the entrance facing forward. These positioning holes 3 and 3 are
In the vicinity of the entrances of the positioning holes 3 and 3, the opening is made wider toward the entrance by forming a tapered surface 18 facing the entrance. The bottom surfaces of the positioning holes 3 and 3 on the inner side are substantially horizontal surfaces, and serve as positioning surface portions 4.

In the vicinity of the upper edge of the lid body 8, a lock cylinder 9 serving as engaging means is arranged. The lock cylinder 9 is formed in a substantially cylindrical shape, penetrates the lid body 8 in the front-rear direction, and is arranged so as to be rotatable with respect to the lid body 8. The front end face of the lock cylinder 9 faces the front surface of the lid body 8. The front end surface of the lock cylinder 9 serves as a rotation operation portion 13 for rotating the lock cylinder 9.

The rear end side of the lock cylinder 9 projects toward the back side of the lid body 8 and has a lock projection 10. The lock projection 10 is formed so as to project on the outer peripheral surface side of the lock cylinder 9.

The lock cylinder 9 is fitted into and engages with the lock hole 5 which is an engaging portion provided in the main body 1 to prevent the lid 8 from being separated from the main body 1. .

That is, the lock hole 5 is a circular hole corresponding to the lock cylinder 9 and has a notch 11 corresponding to the lock protrusion 10. The notch 11 is enlarged inside the lock hole 5 in the rotation direction about the lock hole 5. Therefore, in the lock tube 9, the lock projection 10 is made to correspond to the cutout portion 11, and the lock hole 5 is provided.
After being inserted into the lock hole 5, the lock protrusion 10 is moved into the enlarged portion of the cutout portion 11 in the lock hole 5 so as not to come off from the lock hole 5.

In this lid locking mechanism, in order to attach the lid 8 to the main body 1, first, as shown in FIGS. 3 and 4, the hooks 16 and 16 are locked. Nail 6
By correspondingly fitting the respective cutout portions 7 and 7 from above, the tip end side portion of the latching claw 6 is latched to the latched claws 16 and 16.

Then, as shown by an arrow A in FIG. 3 and FIG. 5, the upper edge side portion of the lid 8 is connected to the main body portion 1.
When moved to the side, the positioning protrusions 12 and 12 are
It fits in corresponding to each said positioning hole 3,3. At this time, the positioning projections 12 and 12 first contact the tapered portions 15 and 15 with the tapered surfaces 18 and 18 of the bottom surfaces of the positioning holes 3 and 3, respectively, and the lid body 8 is moved to the main body portion. As the taper portions 15 and 15 are slidably contacted with the taper surfaces 18 and 18, the taper portions 15 and 15 ride on the positioning surface portions 4 and 4, respectively.

When the lid body 8 is joined to the main body portion 1 to be in the closed lid state, as shown in FIGS. The positioning portions 14, 14 of the respective positioning protrusions 12, 12 are placed.

At this time, the position of the lid 8 with respect to the main body 1 is determined on the basis of the positions of the positioning portion 14 and the positioning surface 4, that is, the vicinity of the upper edge of the lid 8. Therefore, even if the vertical length of the lid body 8 indicated by the arrow L in FIG. 7 changes with respect to the main body portion 1 due to thermal expansion of the lid body 8 or the like, the upper edge side of the lid body 8 The position of the portion with respect to the main body 1 does not move.

Therefore, in this lid locking mechanism,
Even if the length of the lid 8 changes with respect to the main body 1,
The lock cylinder 9 can always be fitted and engaged with the lock hole 5 in a good state.

Further, in this lid locking mechanism, even if the length of the lid 8 changes with respect to the main body 1, the position of the upper edge side portion of the lid 8 with respect to the main body 1 remains unchanged. Since it does not move, there is no problem in terms of appearance and design.

Then, the hooks 16 and 16 to be hooked are in the state where the lid 8 is positioned by the engagement of the positioning projections 12 and 12 with the positioning holes 3 and 3, respectively. 7 with respect to the latching claw 6 in a state in which the latching claw 6 is maintained, that is, the direction from the one edge of the lid 8 to the other edge, that is, the up-down direction. And as indicated by an arrow C, a distance equal to or larger than a difference in dimensional change between the lid 8 and the main body 1 caused by a difference in coefficient of thermal expansion between the lid 8 and the main body 1 within a compensation temperature range. It is possible to move over.

That is, since the materials forming the body 1 and the lid 8 are different from each other, the body 1 and the lid 8 have different coefficients of thermal expansion. Therefore, when the environmental temperature changes, the main body 1 and the lid 8 have different dimensional changes.

The difference in the amount of dimensional change is that, for example, the main body 1 is made of iron or aluminum, the lid 8 is made of ABS resin, and the positioning projections 12 and 12 make the respective hooks. Assuming that the distance to the claws 16 and 16 is about 1 m, the usable compensation temperature is-
When it is set to + 50 ° C (15 ± 35 ° C) from 20 ° C, it is about 4 mm (± 2 mm).

Therefore, the portion of the hook claw 6 which is bent upward from the tip end side portion of the hook claw 6 with respect to the standard position of the hook claws 16, 16 at 15 ° C. Even if 16 and 16 move up and down by about ± 2 mm, the hooks 16 and 16 can be kept hooked, and the length in the up and down direction does not hinder the movement of the hooks 16 and 16. Have

The lid locking mechanism according to the present invention is limited to a structure in which the direction from the one edge of the lid 8 to the other edge is the vertical direction as in the above-described example. Alternatively, the direction extending from the one edge portion of the lid 8 to the other edge portion may be configured as the left-right direction. Further, in this case, the main body portion 1 is not limited to having the opening portion on the front surface portion, and may have the opening portion on the upper surface portion.

Further, in the lid locking mechanism according to the present invention, the positioning portion and the positioned member are positioned by the positioning cylinder 21 arranged in the main body 1 as shown in FIG.
Alternatively, the positioning rod 20 may be fitted and engaged with the inner hole 22 of the positioning cylinder 21. The positioning rod 20 is provided in the vicinity of the edge portion on the other side of the lid body 8 so as to project toward the main body portion 1. The tip end of the positioning rod 20 is tapered so that the fitting of the positioning tube 21 into the inner hole 22 can be smoothly performed.
The positioning cylinder 21 is arranged in the main body 1 with the opening end of the inner hole 22 facing the positioning rod 20 projecting from the lid 8.

Also in this case, even if the length of the lid body 8 changes with respect to the main body portion 1, the lock cylinder 9 is
The lock hole 5 can always be fitted and engaged in a good condition.

[0051]

As described above, in the lid locking mechanism according to the present invention, the lid locking mechanism is provided near the one edge of the lid and is engaged with the locking portion provided in the main body. A hooked member that restricts the movement of the edge portion on one side of the lid body in a direction orthogonal to the direction from the edge portion on one side to the edge portion on the other side of the lid body, and the edge on the other side of the lid body. The positioning portion provided in the main body portion, which is disposed in the vicinity of the portion, to position the lid body with respect to the main body portion in the direction from the other edge portion to the one edge portion of the lid body. Engagement for engaging the positioned member and the engaging portion provided on the main body portion arranged near the edge portion on the other side of the lid body to prevent the lid body from separating from the main body portion. And means.

Therefore, in this lid locking mechanism,
The position of the lid body with respect to the body portion is determined with reference to the edge portion on the other side of the lid body. Therefore, the engaging means can always engage the engaging portion in a good condition.

Further, in the lid locking mechanism, the lid is formed into a substantially rectangular flat plate shape, and the edge of one side of the lid to the other side of the lid is edged. If the direction across the portion is the longitudinal direction of the lid, positioning with respect to the main body with respect to the other edge of the lid with respect to the direction in which a difference in size between the lid and the main body is likely to occur It can be performed.

Further, in each of the lid locking mechanisms, the hooked member is engaged with the hooking portion in a state where the lid is positioned by the engagement of the positioning member with the positioning portion. While maintaining the above, the thermal expansion of the lid body and the main body portion with respect to the hook portion in the direction extending from the edge portion on one side of the lid body to the edge portion on the other side within the compensation temperature range. In the case of being movable over a distance equal to or greater than the difference in dimensional change between the lid and the main body caused by the difference in the ratio,
The position of the lid body with respect to the body portion can be determined with reference to the edge portion on the other side of the lid body, and the engagement of the engagement portion with the engagement member can be maintained within a compensation temperature range. it can.

That is, according to the present invention, a mechanism for locking a lid body made of a material different from that of the body portion to the body portion and enabling opening and closing of the opening provided in the body portion by the lid body. Also, there is provided a lid locking mechanism capable of always maintaining a good engagement state of the lid with the main body even if the environmental temperature changes within the compensation temperature. Is what you can do.

[Brief description of drawings]

FIG. 1 is an exploded perspective view showing a configuration of a casing device having a lid locking mechanism according to the present invention.

FIG. 2 is a perspective view showing a configuration of a lid of the casing device.

FIG. 3 is a perspective view showing a configuration of the casing device.

FIG. 4 is a side view showing a state in which the lid is opened in the casing device with a part thereof cut away.

FIG. 5 is a side view showing a partially broken state of a state in which the lid is being closed in the casing device.

FIG. 6 is a partially cutaway side view showing a state in which the lid is closed in the casing device.

FIG. 7 is a vertical cross-sectional view of a main part showing the configuration of the main part of the lid locking mechanism.

FIG. 8 is a vertical cross-sectional view of a main part showing another example of the configuration of the main part of the lid locking mechanism.

[Explanation of symbols]

 1 Main Body 3 Positioning Hole 4 Positioning Surface 6 Locking Claw 8 Lid 9 Lock Cylinder 10 Lock Protrusion 12 Positioning Protrusion 14 Positioning Surface 16 Locked Claw

Claims (3)

[Claims] 1. A lid disposed near an edge on one side of the lid and engaged with a hooking portion provided on the main body, so that the edge on the other side of the lid is positioned more than the edge on the one side. A locked member that restricts the movement of one edge portion of the lid body in a direction orthogonal to the extending direction, and a positioning provided on the main body portion, which is disposed near the other edge portion of the lid body. A positioned member that engages with a portion to position the lid body with respect to the main body portion in a direction extending from the other edge portion to the one edge portion of the lid body; A lid locking mechanism that is provided near an edge portion and that includes an engaging means that engages with an engaging portion provided on the main body to prevent the lid from separating from the main body. 2. The lid is formed in a substantially rectangular flat plate shape, and a direction extending from an edge portion on one side of the lid body to an edge portion on the other side of the lid body is a longitudinal direction of the lid body. The lid locking mechanism according to claim 1, wherein: 3. The hooked member is attached to the hooking portion in a state where the lid member is positioned by the engagement of the positioning member of the positioned member with the lid member being kept engaged with the hooking portion. Between the lid and the main body caused by a difference in coefficient of thermal expansion between the lid and the main body within a compensation temperature range in a direction extending from one edge of the lid to the other edge. The lid locking mechanism according to claim 1 or 2, wherein the lid locking mechanism is movable over a distance equal to or greater than the difference in dimensional change.