JP2516232Y2 - Fixing mechanism in container - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an in-container fixing mechanism that is particularly suitable for use in inserting and fixing devices that are sensitive to vibration into a container.

[0002]

2. Description of the Related Art There are many ways in which a fixed object is loosely fitted and fixed in a container having an open end in various devices. For example, FIG. 7 shows an electric valve actuator A for driving an electric valve that is installed in piping of an oil plant or the like,
An object to be fixed 2 mainly including a control panel 2a is integrally assembled in a housing 1 which is a container. Specifically, the object to be fixed 2 is formed by rigidly contacting a substrate 22 with a front plate 21, which is a front end, and mounting the control panel 2a on the substrate 22. Then, the fixed object 2 is inserted into the housing 1 through the housing opening end 1a, and the front plate 21
The inner surface of the housing is brought into contact with the step portion 1b provided on the front end side of the housing 1, and the front plate 21 is fixed by the bolt 3 to the housing step portion 1
It is fastened and fixed to b, and finally the opening 1a is closed by the lid 4 to complete the attachment work.

[0003]

However, in such a mounting structure, the fixed object 2 is supported cantilevered on the front plate 21 thereof, and the rear end side is not restrained at all, and the free end is free. Becomes For this reason, there is a problem that vibration of the electric valve actuator A easily causes looseness of each portion, loosening of the bolt 3, etc., which may cause damage to parts of the control panel 2a and eventually cause failure of the main body of the electric valve actuator A. is there. Moreover, in the mounting procedure, the terminal plate 5 is first attached to the opening 1c on the rear end side of the housing 1 and is closed by the lid 6, so that this one wants to reinforce the rear end side of the fixed object 2. It is impossible to modify it at all, and at most, as shown in FIG. 8, the number of bolts 3 for fastening the front plate is limited to three, and the unstable mounting state described above is not resolved. There's a problem.

The present invention has been made in view of these problems, and is widely applied to the case where an object to be fixed is inserted and fixed in a container in which it is difficult to touch the part other than the opening end. It is an object of the present invention to provide an in-container fixing mechanism that is capable of reliably improving its mounting strength.

[0005]

The present invention adopts the following constitution in order to achieve the above object.

That is, the in-container fixing mechanism according to the present invention includes a locking surface provided on the inner wall of the container and facing the upper surface of the fixed object at the insertion position with a minute gap therebetween, and a downward surface of the fixed object. And a biasing means configured to be capable of projecting and retracting the pressing tool through an operation from the opening end side, the pressing tool being brought into contact with the inner wall of the container by the biasing means. The reaction force lifts the fixed object and presses the upward surface against the locking surface of the container.

[0007]

With this structure, if the upward surface of the object to be fixed is set at a position displaced to the rear end side from the front end, the object to be fixed is loosely fitted into the container through the open end. Then, by performing an operation of causing the pressing tool to project from the opening end side with respect to the biasing means, the upward surface of the fixed object is brought into contact with the locking surface of the container and constrained to the container side, and the fixed object is fixed. Can be supported not only at the front end portion but also at the rear end side. For this reason, even if the container can be touched only from the opening end side, the fixed object can be loosely fitted and reliably fixed in the container.

[0008]

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

This in-container fixing mechanism is applied to an electric valve actuator A similar to that shown in FIG. 7, and as shown in FIG. 1, an object to be fixed 2 mainly consisting of a control panel 2a in a housing 1 as a container. And the biasing means 7 is loosely fitted to the fixed object 2 and the strip-shaped pressing metal fitting 71 which is a component of the biasing means 7 is actuated to fix the fixed object 2 to the container 1 I'm trying to restrain it to the side.

More specifically, the housing 1 has an opening end 1a, a step portion 1b is formed on the inner circumference of the vicinity of the opening end 1a, and the lower half inner wall 1d thereof is formed.
As shown in FIGS. 1 and 2, a pair of guide rails 11 extending in the longitudinal direction are provided in a protruding manner, and a locking surface 11a according to the present invention is set on the lower surface of the guide rails 11. on the other hand,
The fixed object 2 is formed by rigidly contacting a front plate 21 which is a front end portion with a substrate 22 and mounting the control panel 2a on the substrate 22. The lower surface 22a of the substrate 22 is provided with a collar 23a and a bolt 23b. And an L-shaped guide member 24 is fixed. The guide member 24 is to be inserted into the crescent-shaped space S between the guide rail 11 of the housing 1 and the inner wall 1d of the housing, and its upper surface 2 at the insertion position.
4a is designed so as to face the locking surface 11a under a minute gap. On the other hand, the biasing means 7 is shown in FIG.
~ As shown in FIG. 4, the bent portion 24 of the guide member 24
The screw holes 72 are provided at two positions of b, and the bolts 73 are screwed into the screw holes 72 to prevent the double nut 7 at the rear end from coming off.
4, the bolts 73 are also inserted through the long holes 71a provided in the pressing metal fitting 71, and the pressing metal fitting 71 is movably held on the guide member 24 side. The lower edge 71b of the pressing metal fitting 71 is connected to the front end side of the guide member 24 via a spring 75, and the pressing metal fitting 71 is elastically brought into contact with the head 73a of the bolt 73 by the spring force. A cross groove 73b is formed on the bolt head 73a.

Next, the mounting procedure of this embodiment will be described. First, as shown in FIG. 3, the guide member 24 is inserted into the space S in a state where the bolt 73 is slackened to the position where the double nut 74 abuts on the bent piece 24b and the pressing metal fitting 71 is laid down. While being guided along 11, the fixed object 2 is inserted into the housing 1 up to the position in FIG. 1 where the front plate 21 contacts the housing step portion 1b. Next, open end 1
A driver (not shown) is inserted into the housing 1 from the side a, the screw 73 is engaged with the cross groove 73b of the bolt head 73a and tightened, and the bolt 73 is screwed into the screw hole 72 of the guide member 24. Along with this, the bolt head 73a presses the lower edge 71b side of the pressing metal fitting 71, and causes the pressing metal fitting 71 to rotate about the upper edge 71c side as a fulcrum, as shown in FIG. The pressing fitting 71 is erected (that is, protrudes downward) to a substantially vertical posture, and the lower edge 71b thereof is pressed against the housing inner wall 1d. And the guide member 2 is generated by the pressing reaction force.
Press 4 upwards. As a result, the guide member 2
As shown in FIGS. 5 and 6, the upward surface 24a of the No. 4 abuts on the locking surface 11a of the guide rail 11, and as a result, the fixed object 2 is constrained to the housing 1 side at that portion. Finally,
As shown in FIG. 1, the bolt 3 inserted into one location of the front plate 21 is fastened to the housing step portion 1b to complete the mounting work.

In this way, the fixing mechanism according to the present embodiment surely fixes the fixed object 2 to the housing 1 at the two front and rear positions, even though the work is performed only through the opening 1a of the housing 1. , It is possible to improve the support strength by eliminating the cantilevered mounting state. Therefore, the control panel 2
It is possible to improve vibration resistance during operation of the electric valve actuator A as a whole including a, and effectively avoid damage to parts due to looseness of various parts and loosening of bolts, failure of the electric valve actuator A, and the like. Further, in such a case, by simply inserting the screwdriver again from the opening end 1a and loosening the bolt 73, the pressing fitting 71 is laid down in the state of FIG. 4, and in that state, the bolt 3 of the front plate 21 is loosened. hand,
The fixed object 2 can be easily taken out of the housing 1. Moreover, since it is not necessary to bolt the front plate 21 at three points as in the conventional case, the attaching / detaching operation can be simplified.

The specific construction of each part is not limited to the illustrated example, and various modifications can be made without departing from the spirit of the present invention. For example, the urging means of the above-described embodiment engages the bolt head and the spring with the pressing metal fitting to cause the pivoting movement (that is, the projecting / withdrawing operation) of the pressing metal fitting. Any mechanism may be used as long as it can induce Further, it goes without saying that the sectional shape of the container and the type of the object to be fixed are not limited to the above. Further, although the present invention refers to the vertical direction for convenience of description, it is irrelevant to the arrangement direction of the fixed object and the like.

[0014]

EFFECTS OF THE INVENTION The in-container fixing mechanism according to the present invention not only allows the fixed object to be loosely fitted into the container through the open end and fix the front end of the fixed object to the container, but also allows the fixed object to move downward. By attaching the biasing means to the surface and operating the biasing means from the opening end side, the pressing tool is brought into contact with the inner wall of the container, and the pressing reaction force lifts the object to be fixed and the upward surface is the locking surface of the container. Since it is pressed and fixed to the container, the object to be fixed can be firmly fixed even on a container where it is difficult to touch it from a site other than the open end, and high mounting strength is expressed, improving the vibration resistance of the object to be fixed, etc. It has an excellent effect that contributes to

[Brief description of drawings]

FIG. 1 is a longitudinal sectional view of an essential part of an electric valve actuator to which an embodiment of the present invention is applied.

FIG. 2 is a view of FIG. 1 viewed from the opening end side.

3 is an enlarged sectional view taken along line III-III in FIG.

4 is an enlarged sectional view taken along line IV-IV in FIG.

FIG. 5 is an operation explanatory view corresponding to FIG.

FIG. 6 is an explanatory view of the operation corresponding to FIG.

FIG. 7 is an overall vertical cross-sectional view of an electric valve actuator according to a conventional example.

FIG. 8 is a diagram of FIG. 7 viewed from the opening end side.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Container (housing) 1a ... Opening end 1d ... Container inner wall 2 ... Fixed object 7 ... Energizing means 11a ... Locking surface 21 ... Front end part (front plate) 22a ... Downward surface 24a ... Upward surface 71 ... Pressing Tool (press fitting)

Claims (1)

(57) [Scope of utility model registration request] 1. A container which has an open end and a fixed object which is loosely fitted into the container through the open end and whose front end is fixed to the container. A locking surface provided on the inner wall of the container and facing the upward surface of the fixed object at the insertion position with a minute gap therebetween, and a pressing tool attached to the downward surface of the fixed object through an operation from the opening end side. Urging means configured to project and retract, and the pressing means abuts against the inner wall of the container by the urging means, and the reaction force lifts the object to be fixed upward. An inner fixing mechanism for a container, the surface of which is pressed against the locking surface of the container.