JPH09320328A - Locking structure of part - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a locking structure of parts in which the workability is high, and parts are prevented from leuig loosely engaged with each other. SOLUTION: In this locking structure, the first part 1 having the first engaging projection 7 on the outer periphery of the first cylinder 6; the second part 2 having the second cylinder 17 with the inner diameter larger than the outer diameter of the first cylinder 1, and having the second engaging projection 8 where the first engaging projection 7 is removal-stopping-locked by fitting and rotating the second cylinder 17 on the inner periphery; and a spring 20 energizing the first engaging projection 7 and the second engaging projection 8 in the direction to lock; are provided. And guide slopes 7a and 8a to guide the first engaging projection 7 and the second engaging projection 8 to the locking positions against the spring force of the spring 20, when the first cylinder 6 and the second cylinder 17 are rotated relatively, are formed to the firs engaging projection 7 and the second engaging projection 8.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a locking structure for components applied to a lighting fixture or the like which is attached by utilizing a hook ceiling.

[0002]

2. Description of the Related Art A first conventional example is shown in FIGS. That is, an inverted L-shaped locking groove 111 is formed on the outer periphery of the adapter 102 that is hooked on the hook sealing body 101, and a female connector 112 is provided at the tip. After hooking the hooking claw 108 of the adapter 102 on the hooking sealing body 101, the holder 113 is fitted to the adapter 102,
The holder 1 so that the locking claw 114 is engaged with the locking groove 111.
Insert 13 and rotate. The holder 113 includes a cylindrical inner cover 120 having an instrument support portion at its upper end, and an inner cover 120.
A spring 1 using an outer cover 123 having a locking claw 114 that is slidably fitted to the outside and locked in the locking groove 111, and a coil spring interposed between the inner cover 120 and the outer cover 123.
24.

When the holder 113 is attached to the adapter 102, the instrument body 127 is set and the holder 113 is set.
The tool body 127 is held between the ceiling 100 and the holder 113 by pushing up and rotating the tool body 102 onto the adapter 102.
In addition, the male connector 126 of the cord 128 connected to the lighting circuit (not shown) of the instrument body 127 is connected to the connector 11
Connect to 2. 133 is a cushioning material such as urethane for increasing the adhesion to the ceiling 100.

A second conventional example is shown in FIG. That is,
The locking structure in which the lamp base 140 is mounted on the socket base 141 is provided with a locking pawl 142 on the lamp base 140, an L-shaped locking groove 143 is formed on the socket base 141, and locked as indicated by an arrow. The claw 142 is inserted into the locking groove 143 to rotate and lock.

[0005]

In both the first conventional example and the second conventional example, the locking claws 114 and 142 are shown in FIG.
As shown in FIG. 7, it includes a groove 145 that guides the locking grooves 111 and 143 in the vertical direction, a groove 146 that continuously guides in the horizontal direction, and a groove 147 that presses and holds the locking claw 114 and the like by the pressure of a spring.

However, in such a locking structure, the locking claw 114 or the like is pushed into the groove 145 such as the locking groove 111 to the full extent, and then the groove is passed through the groove 146 while maintaining the pushing amount. And finally lead to the groove 147. For this reason, it is necessary to continuously apply a large force during the operation of mounting the lighting equipment. To mount the lighting equipment as shown in FIG. 16, the lighting equipment is heavy and a stepladder for mounting on the ceiling 100, etc. There is a drawback that it is difficult to install because the scaffold may be unstable because it climbs up to work in high places.

Further, even if the work is interrupted during the mounting operation, if the engaging claw 114 and the like are in the groove 146, the movement in the vertical direction is restricted at least, so that it is as if the engagement is completed. There is a risk of creating an illusion. If it is held in such a halfway state, if an external force in the direction toward the groove 145 is applied during use, the engagement may be disengaged and the parts may drop, leading to an accident.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a locking structure for parts which has good operability and which does not temporarily hang on each other.

[0009]

According to another aspect of the present invention, there is provided a locking structure for a component, comprising: a first cylindrical portion; and a first engaging protrusion on an outer periphery of the first cylindrical portion. And a second cylindrical portion having an inner diameter larger than the outer diameter of the first cylindrical portion, and the first cylindrical portion and the second cylindrical portion are engaged with each other and rotated to rotate the first cylindrical portion. A second component having a second engagement projection on the inner circumference thereof for retaining and locking the engagement projection, and urging in a direction of engaging the first engagement projection and the second engagement projection A spring for rotating the first cylindrical portion and the second cylindrical portion relative to each other and resisting the spring force of the spring, the first engaging protrusion and the second A guide slope for guiding the engaging projection and the engaging position is formed on at least one of the first engaging projection and the second engaging projection.

According to the component locking structure of the first aspect,
By fitting and rotating the first cylindrical portion and the second cylindrical portion, the first engaging projection and the second engaging projection slide against the spring force and slide over the guide inclined surface. To lock. In this case, the guide slopes are locked at the position where they have finished sliding, and the mounting of the first component and the second component is completed. Until then, the spring force is applied in the directions in which the guide slopes are in contact with each other and deviate from each other. Since the first part and the second part are disengaged immediately after the hand is released, the first part and the second part are not attached, and fitting is performed in an incomplete state. And there is no fear of dropping equipment. Further, as the first engaging protrusion and the second engaging protrusion relatively move along the guide slope, the load due to the spring force is gradually applied,
It is easy to put the second part in the first part.

According to a second aspect of the present invention, there is provided a component locking structure according to the first aspect, wherein each of the first engaging protrusion and the second engaging protrusion has a pair, and the first engaging protrusion and the second engaging protrusion are in pairs. The positional relationship of the second engaging projections is slightly deviated in the circumferential direction. According to the component locking structure of the second aspect, in addition to the effect of the first aspect, the position of the second engaging protrusion relative to the first engaging protrusion is relatively slightly displaced, for example, the first engaging protrusion. By opening the mating protrusion with a slight deviation from the rotation angle of 180 degrees, and opening the second engaging protrusion with the rotation angle of 180 degrees,
Even if temporary hooking occurs at the top of the guide slope in the engagement of the one first engagement protrusion and the second engagement protrusion, the other first engagement protrusion and second engagement protrusion Since the position of the top of the guide slope in the engagement of is displaced and the spring pressure is applied in the disengagement direction, incomplete mounting is less likely to occur.

According to a third aspect of the present invention, there is provided a component locking structure according to the first or second aspect, wherein the first engaging protrusion and the second engaging protrusion are in an engaged state. And a flat surface portion that makes mutual contact in the axial direction of the second cylindrical portion. According to the component locking structure of claim 3, in addition to the effect of claim 1 or claim 2, the first component and the second component
Since the parts can be engaged with each other only by the flat parts, there is no risk of damaging the top of the relatively weak guide slope, and stability is achieved because the flat faces are oriented in the axial direction. The first part and the second part are not tilted and look good, and even if the parts are made of resin, the force applied per unit area can be reduced so that they are less likely to be damaged and are less likely to be deformed due to creep phenomenon. Become.

[0013]

BEST MODE FOR CARRYING OUT THE INVENTION A first embodiment of the present invention will be described with reference to FIGS. That is, the locking structure of the component applied to this lighting fixture has the adapter 1 which is the first component and the holder 2 which is the second component. The adapter 1 has a first cylindrical portion 6 and the first cylindrical portion 6
Has a first engaging projection 7 on its outer periphery. In the embodiment,
A hook sealing portion 4a having a hook claw 5 for hooking on a hook sealing body 4 installed on the ceiling 3 or the like;
It is composed of a first cylindrical portion 6 depending from this, and the first cylindrical portion 6 constitutes a load power feeding portion. The first cylindrical portion 6 is a cylindrical receiving portion of the incandescent lamp socket, and as shown in FIG. 4, the center contact piece 14 and the side contact piece 1 are attached to the female screw portion 6a.
5 are arranged. The first engaging projection 7 is a guide slope 7a.
Is formed on one side thereof to form a triangular portion 7'at the top, and a flat surface portion 7b projecting from the guide slope 7a and perpendicular to the axial direction is formed. Further, the pair of hooking claws 5 is shown in FIG.
As shown in FIG. 5, the mounting screw 51 is mounted, and the inner end portion thereof is caulked and connected to the center contact piece 14 and the side contact piece 15. Reference numeral 9 denotes a lock release button that allows the lock claw 10 to appear and disappear.
With the hook retracted, the hook claw 5 is hooked on the hook ceiling body 4 and the lock release bonder 9 is released, whereby the lock claw 10 is projected by the spring and locked in the recess (not shown) of the hook ceiling body 4. The rotation of the hooking sealing body 4 is restricted to prevent the adapter 1 from coming off accidentally. Reference numeral 11 denotes a flange for temporarily holding the flange, and the temporary holding claw 13 of the flange 12 can be caught as shown in FIG. Reference numeral 1a denotes a hook sealing alignment mark for facilitating hooking of the hook claw 5 on the hook sealing body 4, and 16 denotes a lamp mounted on the first cylindrical portion 6.

The holder 2 has a second cylindrical portion 17 having an inner diameter larger than the outer diameter of the first cylindrical portion 6, and the first cylindrical portion 6
By engaging and rotating the second cylindrical portion 17 and the second cylindrical portion 17, the first engaging protrusion 7 has a second engaging protrusion 8 on the inner circumference thereof, which is retained and locked. In addition, the first engagement protrusion 7 and the second engagement protrusion 8
When the first cylindrical portion 6 and the second cylindrical portion 17 are rotated relative to each other,
The second engaging projection 8 is formed with a guide slant surface 8a that slides against the guide slant surface 7a of the first engaging projection 7 against the spring force of the spring 20 and guides it to the locking position. 7a,
Only one of 8a may be provided. The second engagement projection 8 has a flat surface portion 8b that axially makes contact with the flat surface portion 7b of the first cylindrical portion 7 in the locked state.

The holder 2 of the embodiment has a cylindrical shape which is externally inserted into the adapter 1 and has an outer cylinder 18 which is connected to the second cylindrical part 17 as an inner cylinder. A moving member 19 for supporting the instrument body which is movable in the axial direction is provided between the outer cylinder 17 and the outer cylinder 18, and a spring 20 biases the moving member 19 toward the hooking sealing body 4 side. More specifically, the second cylindrical portion 17 has a dimension e larger than that of the moving member 19 when the device is not pushed up by the moving member 19.
The cylindrical portion 17 is raised. In addition, the second cylindrical portion 17
The outer cylinder 18 and the outer cylinder 18 are integrally formed by a connecting portion 21 on the side away from the hooking sealing body 4, and the connecting portion 21 has an arc-shaped long hole 21a. The outer cylinder 18 is lower than the second cylindrical portion 17 by a dimension f, as shown in FIG. Second cylindrical portion 17
Is provided with a locking groove (not shown) for slidably locking the moving member 19 on the outer peripheral surface thereof, and a second engagement for engaging with the first engaging projection 7 of the adapter 2 on the inner peripheral surface thereof. Protrusions 8 are provided. The second engaging protrusion 8 has a substantially V-shaped groove portion that can engage with the substantially triangular portion 7'of the protrusion of the first engaging protrusion 7.
A guide slope 8a for guiding the guide slope 7a forming one side of the substantially triangular portion 7'is formed outside the groove portion, so that a substantially triangular portion 8'is formed at the edge of the groove portion. Therefore, as shown in FIG. 2, the moving member 19 is in a state in which the guide slope 7a of the first engaging projection 7 is in contact with the guide slope 8a.
The first engaging projection 7 is moved toward the guide slope 8a
1 and slides over the guide slope 8a, as shown in FIG. 1, it is locked in the substantially V-shaped groove of the second engaging projection 8 and in the incompletely mounted state, the holder 20 is pressed by the force of the spring 20 described later. It is designed to move in the direction in which 2 comes off.
Further, when the first engaging projection 7 and the second engaging projection 8 are in the locked state, the flat surface portions 7b and 8b are locked to each other, and the substantially triangular portion of the first engaging projection 7 and the second engaging projection 7 are locked. It is slightly apart from the groove of the engaging projection 8.

A groove 35 for guiding the first engaging projection 7 into the second cylindrical portion 7 is formed over the entire length of the inner peripheral surface of the second cylindrical portion 17 in the axial direction. The entrance of the groove 35 is made particularly wide to improve the guide property, and the number of the grooves 35 is set to four, which is larger than two of the first engaging projections 7. When the holder 2 is attached to the adapter 1, the rotation direction in which the first engagement protrusion 7 and the second engagement protrusion 8 are locked is the rotation direction when the adapter 1 is attached to the hook sealing body 4. Since it is aligned with the direction, the adapter 1 does not loosen when the holder 2 is attached.

The moving member 19 is constructed so as to be fitted between the second cylindrical portion 17 and the outer cylinder 18 so as to be movable only in the axial direction, has a substantially cylindrical shape, and has a globe 41. A tool support portion 24 for supporting a tool such as the above is provided on the outer peripheral side of the upper end of the figure, and is in sliding contact with the outer peripheral surface of the second cylindrical portion 17 and engaged with the spring receiver and the retaining portion 30 of the second cylindrical portion 17. An elastic body (not shown) that projects a plurality of projections 19a that also serve as stoppers to the inner peripheral surface, and further inserts the moving member 19 from the end of the second cylindrical portion 17 so as to be slidably locked in the locking groove. ) Is provided on the inner peripheral surface, and in this state, the protrusion 19a can be locked to the retaining portion 30. Further, the second cylindrical portion 17 and the moving member 19 are passed through the gap between the protrusions 19a and the elongated hole 21a.
The heat of the lamp can be raised in the interval, and the temperature rise of the holder 2 is suppressed.

A plurality of instrument support portions 24 of the moving member 19 are arranged at substantially equal intervals in the circumferential direction of the moving member 19, that is, at least three.
It is divided into individual pieces and protrudes so as to have a diameter substantially equal to that of the outer cylinder 18. Further, the height of the moving member 19 below the instrument support portion 24 is set lower than the height of the outer cylinder 18. That is, when the height c of the outer cylinder 18 is set as shown in FIG. 8 and the height d of the moving member 19 is lower than the instrument support portion 24, c>
d.

The moving member 19 is a molded product made of a thermoplastic resin and is manufactured by injection molding, and a gate is provided on the end surface of the moving member 19 corresponding to the substantially central portion of each of the instrument supporting portions 24. 31 is the gate position on the molded product. The spring 20 is arranged between the second cylindrical portion 17 and the outer cylinder 18, and urges the moving member 19 by compressing between the connecting portion 21 and the moving member 19. In the embodiment, a coil spring is used.

After the flange 12 is temporarily held by the adapter 1, the globe 41 and the holder 2 are held in both hands, and the holder 2 is attached. With the holder 2 attached, the flange 12 is pressed against the ceiling 3 by the tool support 24 of the moving member 19 biased by the spring 20, and the flange 12 and the globe 41 are thereby fixed. In this way, the instrument support body configured by the adapter 1 and the holder 2 constitutes an instrument for one incandescent lamp that supports the flange 12 and the globe 41.

Since the inner diameter of the globe 41 is close to the outer diameter of the second cylindrical portion 17, the amount of play is restricted. Further, since the position of the flange 12 is regulated by the globe 41, when the position of the globe 41 is regulated, the position of the flange 12 is also regulated. Further, since the device support portion 24 is projected to about the outer diameter of the outer cylinder 18 and the position is regulated, the edges of the globe 41 and the flange 12 can be placed on the device support portion 24, and the device can be securely held. You can

According to this embodiment, the first cylindrical portion 6
By engaging and rotating the second cylindrical portion 17 with the first cylindrical portion 17,
The engaging projection 7 and the second engaging projection 8 slide on the guide slopes 7a and 8a against the spring force and ride over them to be locked.
In this case, the guide slopes 7a and 8a are locked at the positions where they have finished sliding, and the mounting of the adapter 1 of the first component and the holder 2 of the second component is completed.
Since the spring pressure is applied in the direction in which they contact each other at a and are disengaged from each other, the first part and the second part are disengaged immediately even if the hands are released and the hands are released, and temporary engagement occurs. And there is no incomplete mating,
There is no fear of dropping equipment.

Further, as the first engaging projection 7 and the second engaging projection 8 relatively move along the guide slopes 7a and 8a, the load due to the spring force is gradually applied, so that the second component Is easy to put in the first part. That is, in FIG.
As shown in (a), in the conventional example, it is necessary to rotate the holder 2 while maintaining the maximum load from the mounting start to the mounting completion, whereas in this embodiment, FIG.
As shown in (b), after the load is applied up to the point where the guide slopes 7c and 8a come into contact with each other, the pushing-up force increases as the holder 2 rotates. The energy required for the mounting operation is reduced only in the portion indicated by the alternate long and short dash line in the figure. For this reason,
The holder 2 is easily locked to the adapter 1.

The first engaging protrusion 7 and the second engaging protrusion 8 are formed by the flat portions 7b and 8b of the first cylindrical portion 6 and the second cylindrical portion 17 which are in axial contact with each other in the locked state. Since the first part and the second part can be engaged with each other only by the flat parts 7b and 8b, the triangular parts 7'and 8'of the guide slope 7b having relatively weak strength can be provided. There is no danger of damaging the top part, and the two flat parts oriented in the axial direction are engaged with each other, so stability is good, and the first part and the second part look good without tilting and when the parts are made of resin. However, since the force applied per unit area can be reduced, damage is less likely to occur, and deformation due to the creep phenomenon is less likely to occur.

A second embodiment of the present invention is shown in FIG. That is, the locking structure of this component is the same as the first engaging protrusion 7 and the second engaging protrusion 8 in the first embodiment.
Are provided in pairs, and the positional relationship between the first engagement protrusion 7 and the second engagement protrusion 8 is slightly deviated in the circumferential direction.
In FIG. 14, the pair of first engaging projections 7 are separated from each other by a small angle α from the rotation angle of 180 degrees, and the pair of second engaging projections 8 are separated by the rotation angle of 180 degrees.

According to this embodiment, in the unlikely event that one of the first engaging projection 7 and the second engaging projection 8 is engaged, the substantially triangular portions 7 ', 8'of the guide slopes 7a, 8a. Even if temporary hooking occurs at the top, the guide slopes 7a, 8a in the engagement of the other first engaging protrusion 7 and second engaging protrusion 8
Since the position of the top part of the is shifted and the spring pressure is applied in the releasing direction, incomplete mounting is less likely to occur.

FIG. 15 shows a third embodiment of the present invention. That is, the locking structure of this component is the same as the first engaging protrusion 7 and the second engaging protrusion 8 in the first embodiment.
Is one each. In this embodiment,
Although the balance between the engagement between the second cylindrical portion 17 and the first cylindrical portion 6 is poor and the holder 2 tilts, the guide slope 7
Since the tops of a and 8a do not hang temporarily at two or more places at the same time, and the balance in the hung state cannot be balanced,
Temporary hooking is less likely to occur than in the first embodiment.

[0028]

According to the component locking structure of the first aspect, the first engaging portion and the second engaging portion are rotated by fitting and rotating the first cylindrical portion and the second cylindrical portion. The engaging projection slides on the inclined surface of the guide against the spring force, rides over this and is locked. In this case, the guide slope is locked at the position where it has finished sliding,
Although the parts and the second part are completely attached, the spring pressure is applied to the guide slopes so that they come in contact with each other and separate from each other until then. In addition, the first part and the second part are not disengaged from each other, temporary hooking does not occur, fitting in an incomplete state does not occur, and there is no fear of dropping an instrument or the like. Further, as the first engaging protrusion and the second engaging protrusion relatively move along the guide slope, the load due to the spring force is gradually applied, so that the second component can be easily inserted into the first component. .

According to the component locking structure of the second aspect,
In addition to the effect of claim 1, the position of the second engagement protrusion relative to the first engagement protrusion is relatively displaced, for example, the first engagement protrusion is slightly deviated from a rotation angle of 180 degrees to open. If the second engaging projection is opened at a rotation angle of 180 degrees, a temporary catch may occur at the top of the guide slope in the engagement between the first engaging projection and the second engaging projection. However, the position of the apex of the guide slope in the engagement of the other first engaging protrusion and the second engaging protrusion is displaced, and the spring pressure is applied in the disengagement direction. Less likely to occur.

According to the locking structure for parts of claim 3,
In addition to the effect of claim 1 or claim 2, since the first part and the second part can be engaged with each other only by the flat parts after mounting, there is a risk of damaging the top part of the relatively weak guide slope. There is no such thing, and the two flat surfaces are oriented in the axial direction, so stability is good, the first part and the second part are not tilted, and they look good. Since the force applied to the can be reduced, it is less likely to be damaged, and deformation due to the creep phenomenon is less likely to occur.

[Brief description of drawings]

FIG. 1 is an explanatory view showing an engagement according to a first embodiment of this invention.

FIG. 2 is an explanatory diagram of a state before the engagement.

FIG. 3 is a front view of a lighting device.

FIG. 4 is a half sectional side view of the adapter.

FIG. 5 is a partial cross-sectional view of the first cylindrical portion.

FIG. 6 is a bottom view of the adapter.

FIG. 7 is a plan view of a holder.

FIG. 8 is a front view of a half section thereof.

FIG. 9 is an explanatory diagram showing irregularities on the outer peripheral surface of the outer cylinder.

FIG. 10 is a perspective view before connecting the holder to the adapter.

FIG. 11 is a perspective view of the holder seen from the lower end side.

FIG. 12 is a perspective view of a first engagement protrusion.

FIG. 13 is a graph of a conventional example and an embodiment of a force for pushing up a holder with respect to a rotation amount.

FIG. 14 is a bottom view of the adapter according to the second embodiment.

FIG. 15 is a bottom view of the adapter according to the third embodiment.

FIG. 16 is a partial cross-sectional view of a first conventional example.

FIG. 17 is a perspective view before connecting the holder to the adapter.

FIG. 18 is a partial perspective view showing a lamp base and a socket receiver of a second conventional example.

FIG. 19 is an explanatory view of a locking groove of a conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Adapter which is a 1st part 2 Holder which is a 2nd part 6 1st cylindrical part 7 1st engaging part 7a guide slope 7b plane part 8 2nd engaging part 8a guide slope 8b plane part 17th 2 cylindrical part 18 outer cylinder 19 moving member 20 spring

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Ken Imai 1-55 Yoshida Shimojima, Higashiosaka City, Osaka Prefecture Asahi National Lighting Co., Ltd.

Claims (3)

[Claims] 1. A first component having a first cylindrical portion and a first engaging protrusion on an outer periphery of the first cylindrical portion;
Has a second cylindrical portion having an inner diameter larger than the outer diameter of the cylindrical portion, and the first engaging protrusion is pulled out by interlocking and rotating the first cylindrical portion and the second cylindrical portion. Second stop and lock
A second part having an engaging protrusion on its inner circumference, and a spring for urging the first engaging protrusion and the second engaging protrusion in a locking direction, the first cylinder Guides the first engagement protrusion and the second engagement protrusion to the locking position against the spring force of the spring when the portion and the second cylindrical portion are relatively rotated. A locking structure for a component, wherein a guide slope is formed on at least one of the first engaging protrusion and the second engaging protrusion. 2. The first engaging protrusion and the second engaging protrusion each have a pair, and the positional relationship between the first engaging protrusion and the second engaging protrusion is slightly displaced in the circumferential direction. The locking structure for a component according to claim 1, wherein: 3. The first engagement projection and the second engagement projection each have a flat surface portion in axial contact with the first cylindrical portion and the second cylindrical portion in a locked state. The locking structure for a component according to claim 1 or claim 2.