JPH04129908U - Screw fastening structure of the housing - Google Patents

Abstract

(57) [Summary] [Structure] In order to share the fixing screws 9 between cases whose mounting surface portions 5 have different thicknesses, a mounting surface portion is provided on the side of the case 1 where the thickness of the mounting surface portion 5 is thin. A spacer portion 7 is provided behind the fixing screw 5 and comes into contact with the head of the fixing screw 9. This spacer portion 7 is formed by bending the end region of the second face plate member 3 that constitutes the housing 1 . [Effect] Compared to the conventional case where a screw spacer was provided separately from the housing 1, the number of parts is reduced, and there is no need to attach the screw spacer to the housing, so manufacturing costs are reduced. It can be made into something.

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

This invention is a screw for the housing that is applied when fastening the housing to the mounting surface with fixing screws. This relates to a fastening structure.

0002

[Conventional technology]

For example, a control panel that electrically controls the operation of a mechanical device has seeds inside a housing that covers the entire device. It is manufactured by assembling various electrical parts. Also, for example, power supply section, signal If each functional unit, such as a processing section or a display control section, can be configured separately, each A structure is adopted in which a housing is provided for each function unit and these housings are assembled together for control. A board is constructed. When assembling a case like this, a part of the face plate that makes up the case is attached to the side. A flange-like mounting surface is formed by protruding from the surface, and a screw passed through this mounting surface is connected to another A method of fixing the device by screwing it onto the housing is generally adopted.

0003 By the way, the size and shape of the above-mentioned casings should also be standardized. By reducing the number of types, for example, management costs can be reduced, and manufacturing costs can be reduced. Production costs can be made cheaper. On the other hand, the constituent material of the casing as mentioned above In addition to metal plates such as iron plates and aluminum plates, synthetic resin plates have been widely used in recent years. It's starting to look like this. When using such a synthetic resin plate, generally a metal plate is used. In particular, the thickness of the mounting surface where the fixing screws are inserted is lower than that of a metal plate. It is formed thicker than in the case of . For this reason, fixing screws that pass through the mounting surface cannot be used. The casings were made from synthetic resin plates and metal plates, each with different lengths. It is necessary to prepare. As a result, the number of types of fixing screws in stock has increased, and In addition, it is necessary to perform assembly work while selecting fixing screws of different lengths as appropriate. This makes the work complicated and it is not possible to reduce costs sufficiently.

0004 Therefore, fixing screws between the synthetic resin plate casing and the metal plate casing as described above were used. Conventionally, a screw spacer was installed on the side of the thin metal plate housing in order to share the information. A configuration is adopted in which the parts are further assembled. Figure 5 shows an example of its structure. This will be explained with reference to FIGS.

[0005] As shown in FIG. Assemble the second face plate member 22 to the first face plate member 21 to cover the front surface and the lower surface (not shown). Furthermore, as shown in FIG. 5, a back plate 23 covering the back surface (the upper surface in the figure) By being assembled to the first face plate member 21, it is formed into a substantially box shape.

[0006] As shown in FIG. 6, the first face plate member 21 has an L-shaped cross section at its upper right corner. By bending, this corner area is formed into a stepped shape, which allows for easy access from the front side. A corner notch space 24 extending to the back side is provided, and as shown in FIG. A protrusion covering the back side of the cutout space 24 is provided, and this protrusion covers the mounting surface 25. It is formed as. A rectangular parallelepiped block is placed on the front side of this mounting surface portion 25. A shaped threaded spacer 26 is provided.

[0007] As shown in FIG. 5, this screw spacer 26 has one end that is connected to the first face plate member 2 It is inserted into the housing 20 through the opening in the step part 1, and the insertion part Attach the screw spacer to the upper surface of the first face plate member 21 using the screw spacer fixing screws 27. It is. Through this screw spacer 26 and the mounting surface part 25, The fixing screw 28 is inserted from the front side, and the mounting surface of this fixing screw 28 is Connect the male threaded part on the tip side protruding from the part 25 to the mounting surface of another casing (not shown). The housing 20 can be screwed into the screw holes provided in the housing 20. It is becoming more and more popular.

[0008] By installing the screw spacer 26 as described above, the thickness of the mounting surface can be reduced. Use the fixing screw 28 that has a length selected according to other thick casings. This allows the screw fastening work of the housing 20 to be performed.

[0009]

[Problem that the idea aims to solve] However, in the above conventional structure for sharing the fixing screw 28, is a part because it is necessary to provide the screw spacer 26 separately from the housing 20. As the number of points increases, they are further attached to the housing 20 with screw spacer fixing screws 27. Since additional work is required, material costs and work costs increase, and the However, there is a problem in that the production cost increases.

0010

[Means to solve the problem]

In order to solve the above problems, the screw fastening structure of the casing of the present invention has a screw fastening structure for fixing it to the casing. A mounting surface portion through which the screw is inserted is provided, and a fixing portion protruding from the mounting surface portion is provided. When the tip of the screw is screwed into the screw hole formed on the mounting surface, the above fixing A spacer in which the screw head of the screw comes into contact with the above mounting surface at a position on the rear side in the fastening direction. In the screw fastening structure of the casing in which the spacer part is provided in the casing, the spacer part is provided in the casing. , a bend in which the end region of the face plate forming the housing is bent approximately parallel to the mounting surface; It is characterized by being formed by parts.

[0011]

[Effect]

In the above structure, the screw head of the long fixing screw must be placed behind the mounting surface. The spacer part that comes into contact with one side and enables the fixing screw to fasten the housing is By bending the end area of the face plate that makes up the housing, it is constructed integrally with the housing. has been done. Therefore, in order to create a configuration that allows for the common use of fixing screws, There is no need to increase the number of products, and there is no need to attach screw spacers to the housing as in the past. Since no attachment work is required, manufacturing costs can be reduced.

0012

【Example】

An embodiment of the present invention will be explained based on FIGS. 1 to 4 as follows. It is.

[0013] As shown in FIG. 2, the housing 1 according to this embodiment has a front surface (lower surface in the figure) 2. A thin metal plate is bent and formed into a substantially U-shape so as to cover a and the left and right sides 2b and 2c. The formed first face plate member 2 has an upper surface 3a, a back surface (the upper surface in the figure) 3b, and Bend and form in the same manner as above to cover the bottom surface (the surface on the back side of the page in the figure). By assembling the second face plate member 3 formed by ing.

[0014] The right end side of the corner where the upper surface 3a and the back surface 3b of the second face plate member 3 are connected is separated. In the area on the front side of the separation part on the upper surface 3a, The second face plate member 3 is further bent into an L-shape, as shown in FIG. Sunawa A vertical surface 3c extending downward from the right end of the upper surface 3a, and a vertical surface 3c extending downward from the lower end of this vertical surface 3c. As a low step surface 3d horizontally reaching the right side surface 2c of the first face plate member 2, The right end side of the upper surface 3a is formed, so that the front and rear sides are formed on the upper right end side of this housing 1. A corner notch space 4 with a rectangular cross section extending in the direction is formed. In addition, the first face plate member The upper right corner area of the front surface 2a in 2 is notched to match the corner notch space 4. On the other hand, the upper right corner of the back surface 3b is located on the back side of the corner notch space 4. is made into a protruding shape so as to cover it, and this protrusion is formed as the mounting surface part 5. There is.

[0015] On the other hand, as shown in FIG. 1, the right side surface 2c of the first face plate member 2 has its upper edge on the rear end side. Except for , the height is continuous with the right end of the lower step surface 3d. stop As shown in FIG. 4, the rear edge of the right side surface 2c An upwardly extending portion 6 is provided that continues to the right edge of the mounting surface portion 5, and this upwardly extending portion 6, as shown in FIG. A bent portion is provided which is formed by bending the top of d at a substantially right angle in the direction toward the vertical surface 3c, This bent portion is formed as a spacer portion 7. With the above structure, the spacer part 7 is positioned in front of the mounting surface 5 and parallel to the mounting surface 5; It has become.

[0016] Further, the vertical surface 3c has a slit-like shape that matches the cross-sectional shape of the spacer portion 7. A groove 8 is formed, and the distal end side of the spacer portion 7 is fitted into this groove 8. Erection is taking place.

[0017] The spacer portion 7 and the mounting surface portion 5 are provided with through holes whose centers are aligned with each other. The fixing screws 9 are inserted from the front side through these through holes.

[0018] The housing 1 having the above structure has a fixing screw 9 inserted through the spacer part 7 and the mounting surface part 5. For example, as shown in FIG. It can be fastened to the other housing 11 by screwing it into the screw hole 12 provided on the surface. tied.

[0019] At this time, the head of the fixing screw 9 is fastened while being in contact with the spacer portion 7.

[0020] That is, the spacer portion 7 separates the bearing surface on which the screw head comes into contact from the mounting surface portion 5. For example, the thread depth of the threaded hole 12 on the mounted side is Screw fastening is possible when the length under the neck of the fixing screw 9 is long. did Therefore, the length can be adjusted to suit the installation of another housing made of synthetic resin material, for example. Even if a different fixing screw 9 is selected, this fixing screw 9 can also be used to attach the above-mentioned casing. The body 1 can be attached.

[0021] In the above structure, a spacer is used to adjust the length as described above. The part 7 is a bent part formed by bending the upper rear end area of the first face plate member 2 constituting the housing 1. Therefore, it is configured integrally with the housing 1. Therefore, like the conventional example mentioned above, , the number of parts increases compared to the case where a screw spacer is provided separately from the housing. Also, there is no need to attach the screw spacer to the housing. , the manufacturing cost can be made cheaper.

[0022] Further, in the above embodiment, the end region of the first face plate member 2 is bent and formed. The tip of the spacer portion 7 formed in It has a structure in which it is inlaid. Therefore, when fastening with the fixing screw 9, The free end of the spacer portion 7 comes into contact with the edge of the groove 8. displacement in the fastening direction is prevented. This prevents deformation due to screw fastening force. Because it has a thinner structure, it is possible to construct the housing 1 from a thinner plate material. This also makes bending easier. As a result, material costs and processing costs are reduced. This also makes it possible to reduce production costs. can.

[0023] In the above embodiment, the mounting surface portion 5 is set at a position covering the corner notch space 4. The housing 1 has a structure in which the mounting portion of the fixing screw 9 is located within the outer peripheral surface of the housing 1. As explained above, for example, the mounting surface through which the fixing screw is inserted is the outer peripheral surface of the housing. The present invention can also be applied to other types of housings, such as those with a flange-like structure that protrudes laterally. It is possible to apply and configure.

[0024]

[Effect of the idea]

As described above, the screw fastening structure of the casing of this invention is such that the screw head of the fixing screw is attached The spacer part that comes into contact with the face part at a position on the rear side in the fastening direction is the face plate that forms the housing. It is formed by a bent part in which the end area is bent almost parallel to the mounting surface part. It is the composition.

[0025] Therefore, it is possible to fix long lengths without providing a separate screw spacer from the housing. It is possible to fasten the housing with screws. Therefore, common fixing screws In order to create a configuration that allows for There is also no need to attach a screw spacer to the housing. As a result, the production cost This has the effect that it can be made cheaper.

[Brief explanation of drawings]

FIG. 1 is a perspective view showing the main parts of a casing according to an embodiment of the present invention.

FIG. 2 is a plan view of the casing.

FIG. 3 is a front view of the casing.

FIG. 4 is a right side view of the casing.

FIG. 5 is a plan view showing a conventional housing provided with a screw spacer.

FIG. 6 is a front view of the conventional casing.

FIG. 7 is a right side view of the conventional casing.

FIG. 8 is a perspective view of the mounting portion of the screw spacer in the conventional casing.

[Explanation of symbols]

1 Housing 2 First face plate member 3 Second face plate member 5 Mounting surface part 7 Spacer part 9 Fixing screw 12 Screw hole

Claims (1)

[Scope of utility model registration request] Claim 1: When a housing is provided with a mounting surface portion into which a fixing screw is inserted, and the tip side of the fixing screw protruding from the mounting surface portion is screwed into a screw hole formed in a mounting surface. , in the screw fastening structure of the casing, the casing is provided with a spacer portion that the screw head of the fixing screw abuts at a position on the rear side in the fastening direction with respect to the mounting surface portion, the spacer portion forming the casing; 1. A screw fastening structure for a housing, characterized in that the end region of the face plate is formed by a bent portion that is bent approximately parallel to the mounting surface portion.