JP6383473B1 - Device body and case fixing device - Google Patents

Abstract

An apparatus main body and case fixing device that realizes space saving and manufacturing cost reduction are provided. An apparatus main body and a case each have an upper surface, a lower surface, and a front surface that face each other, the upper surface and the lower surface of the case are provided with claws, and the upper and lower surfaces of the apparatus main body are provided with square holes that fit into the claws. When the case is fitted, the cylindrical protrusions on the upper and lower surfaces of the case and the cutouts on the device body are fitted to determine the position of the case in the longitudinal direction with respect to the device body, and the elasticity of the case upper surface and the front surface is determined. A gap corresponding to the height of the hemispherical protrusion is formed between the upper surface of the case and the inner wall of the upper surface of the device main body by the plate and the hemispherical protrusion, so that the position in the height direction of the case with respect to the device main body is The gap in the fitting direction of the case with respect to the device body is determined by forming a gap corresponding to the height of the hemispherical protrusion between the front surface of the case and the inner wall of the front surface of the device body. That. [Selection] Figure 1

Description

  The present invention relates to a fixing device provided for attaching and fixing a case to an apparatus main body.

  Conventionally, a technique for attaching a case to a device main body by fitting has been proposed (see, for example, Patent Document 1).

  In Patent Document 1, a pair of upper and lower collars are provided on each of the instrument body and the case so that the instrument body and the case can be fixed by inserting and fitting the case into the instrument body. And patent document 1 is equipped with the structure which fixes a case to an instrument main body by fitting the dowel provided in the collar of the case side, and the square hole provided in the collar of the instrument main body side.

  Furthermore, in Patent Document 1, a step is provided on the base side of the collar of the instrument body, and the dimension of the collar on the instrument body side is larger than the dimension of the collar on the case side at the position where the dowels and the square holes match. It has a configuration. Thereby, patent document 1 is preventing the position shift with the instrument main body and case which arise after fitting. Furthermore, in Patent Document 1, a guide having a size matching the width of the collar of the instrument body is provided on the base side of the collar of the case. Thereby, patent document 1 provides the structure which can carry out fitting reliably and easily.

JP-A-62-63209

  However, the prior art has the following problems. In patent document 1, it has the structure where the projection area of a case becomes larger than the projection area of the fitting direction of an apparatus main body in a fitting part. Therefore, space saving of the product is hindered.

  In addition, in order to fix the instrument body and case without loose fit, the working accuracy of the dimension from the end of the step provided on the collar of the instrument body to the square hole and the dimension from the base of the case collar to the dowel Need to be increased. Therefore, the cost required for production becomes high.

  The present invention has been made in order to solve such a problem, and an object of the present invention is to manufacture a product in which a device body and a case are fitted and fixed in a space-saving manner and at a lower cost than in the past. It is possible to obtain an apparatus main body and case fixing device.

  The fixing device according to the present invention can determine the position of the case in the longitudinal direction, the height direction, and the fitting direction with respect to the device body when the case is fitted to the device body. A fixing device for fixing, wherein the device main body has a main body upper surface, a main body lower surface, and a main body front surface, and the case is fixed to be opposed to the main body upper surface, the main body lower surface, and the main body front surface of the device main body. The case has a lower surface and a front surface of the case, the case has a claw on the upper surface of the case and the lower surface of the case, the main body of the device has square holes to fit into the claw on the upper surface of the main body and the lower surface of the main body, The lower surface further includes a cylindrical protrusion, and the device body further includes a notch that fits into the cylindrical protrusion on the upper surface and the lower surface of the device, and the cylindrical protrusion when the device body and the case are fitted. And notches The position in the longitudinal direction of the case with respect to the device body is determined by the respective fitting, and the case further includes an elastic plate on the upper surface of the case and the front surface of the case, and the plate includes hemispherical protrusions, respectively. When the case is fitted, a gap corresponding to the height of the hemispherical protrusion is formed between the upper surface of the case and the inner wall of the upper surface of the device body by the plate on the upper surface of the case and the hemispherical protrusion. Thus, the position in the height direction of the case relative to the device body is determined, and the height of the hemispherical protrusion is set between the front surface of the case and the inner wall of the front surface of the device body by the plate on the front surface of the case and the hemispherical protrusion. By forming a corresponding gap, the position in the fitting direction of the case with respect to the device main body is determined.

  According to the present invention, in addition to the fitting claw and the square hole, the case includes an elastic plate, a hemispherical protrusion, and a cylindrical protrusion, and the device body has a notch corresponding to the cylindrical protrusion. It has. As a result, a product in which the device main body and the case are fitted and fixed can be made into a structure that can be manufactured in a smaller space and at a lower cost than in the past. Moreover, positioning of the case with respect to the apparatus main body and prevention of dropping off can be realized.

It is a disassembled perspective view of the apparatus main body and case which concern on Embodiment 1 of this invention. It is the 3rd view and sectional drawing of the case which concern on Embodiment 1 of this invention. It is the 3rd view and sectional drawing of an apparatus main body which concern on Embodiment 1 of this invention. It is sectional drawing of a nail | claw and a square hole part in the apparatus main body and case in a fitting state based on Embodiment 1 of this invention. It is sectional drawing of the hemispherical protrusion part in the apparatus main body and case in the fitting state based on Embodiment 1 of this invention.

  DESCRIPTION OF EMBODIMENTS Preferred embodiments of a device main body and case fixing device of the present invention will be described below with reference to the drawings.

Embodiment 1 FIG.
FIG. 1 is a perspective view of a case 1 and a device main body 2 according to Embodiment 1 of the present invention. As shown in FIG. 1, in the following description, the direction in which the case 1 is inserted into the device body 2, that is, the fitting direction is the X direction, the longitudinal direction of the device body 2 and the case 1 is the Y direction, the device body 2 and The height direction of the case 1 is referred to as the Z direction.

  FIG. 2 is a three-side view and a cross-sectional view of case 1 according to Embodiment 1 of the present invention. Specifically, regarding the case 1, FIG. 2 (a) is a top view, FIG. 2 (b) is a front view, FIG. 2 (c) is a bottom view, and FIG. 2 (d) is a cross-sectional view. Show. The same parts as those in FIG. 1 are denoted by the same reference numerals in FIG.

  FIG. 3 is a three-side view and a cross-sectional view of the device main body 2 according to Embodiment 1 of the present invention. Specifically, regarding the device body 2, FIG. 3A is a top view, FIG. 3B is a front view, FIG. 3C is a bottom view, and FIG. 3D is a cross-sectional view. Each is shown. 1 and 2 are denoted by the same reference numerals in FIG.

  The case 1 includes an upper claw 1a, a hemispherical projection 1b, an elastic plate 1c, a columnar projection 1d, and a lower claw 1e. Two upper claws 1 a are provided on the upper surface of the case 1, and two lower claws 1 e are provided on the lower surface of the case 1. Two elastic plates 1c are provided on the upper surface of the case 1 and four on the front surface. One hemispherical protrusion 1b is provided on the surface of the elastic plate 1c. One cylindrical protrusion 1 d is provided on the upper surface and the lower surface of the case 1.

  The apparatus main body 2 includes a square hole 2a and a notch 2b. Two square holes 2a are provided on the upper surface of the device body 2 and two on the lower surface so as to be paired with the upper claw 1a and the lower claw 1e of the case 1. Further, one notch 2 b is provided on each of the upper surface and the lower surface of the device main body 2 so as to be paired with the cylindrical protrusion 1 d of the case 1.

  When inserting and fixing the case 1 to the device main body 2, it is necessary to position the case 1 with respect to the device main body 2 with high accuracy. The fixing device according to the present invention has a structure that can easily achieve positioning in the X, Y, and Z directions shown in FIG. Therefore, a specific structure related to positioning in the X, Y, and Z directions will be described in detail below with reference to the drawings.

  As shown in FIGS. 1 and 2 (a), the pair of upper claws 1a provided on the case 1 is separated from the both ends of the upper surface of the case 1 in the longitudinal direction (Y direction in FIG. 1) by a predetermined distance. It is provided at the position. Similarly, as shown in FIG. 1 and FIG. 2 (c), the pair of lower claws 1 e provided on the case 1 is provided at a position away from a predetermined distance from both longitudinal ends of the lower surface of the case 1. It has been.

  Further, as shown in FIGS. 1, 3A and 3C, the pair of square holes 2a provided on the upper surface of the device main body 2 are arranged in the longitudinal direction (Y direction) of the upper surface of the device main body 2. It is provided corresponding to the upper claw 1a of the case 1 at a position away from a predetermined distance from both ends. Further, the pair of square holes 2a provided on the lower surface of the device main body 2 are arranged at a position away from a predetermined distance from both ends of the lower surface of the device main body 2 in the longitudinal direction (Y direction). It is provided corresponding to.

  By inserting the case 1 into the device main body 2 in the fitting direction of FIG. 1 (X direction of FIG. 1), the upper claw 1a and the lower claw 1e of the case 1 are provided corresponding to each claw. The square holes 2a of the device body 2 are combined with each other. As a result, the case 1 and the device main body 2 are fitted and fixed. Thereby, it is possible to prevent the case from falling off in the fitting direction (X direction).

  The cross-sectional view shown in FIG. 4 shows a state in which the upper claw 1a and the square hole 2a and the lower claw 1e and the square hole 2a are fitted in a state where the case 1 and the device main body 2 are fitted and fixed. .

  Next, the role of the elastic plate 1c and the hemispherical protrusion 1b provided in the case 1 will be described.

  As shown in FIG. 1, FIG. 2 (a) and FIG. 2 (b), two elastic plates 1c of the case 1 are preset on the upper surface of the case 1 and four on the front surface, respectively. Are provided in plurality.

Two elastic plates 1 c provided on the upper surface of the case 1 have a structure having elasticity in the direction from the inner side to the outer side (Z direction) of the upper surface of the case 1.
Specifically, two elastic plates 1c provided on the upper surface of the case 1 are formed in a horizontally-elongated U-shape in which predetermined locations on the upper surface of the case 1 are long in the Y direction and short in the X direction. It is formed by cutting out. The two U-shaped notches are provided in the longitudinal direction (Y direction) of the case 1 so as to have a U-shaped opening in the direction toward the center of the case 1.

Moreover, it has a structure which has elasticity in the direction (X direction) which goes outside from the inner side of the front surface of the case 1.
Specifically, the four elastic plates 1c provided on the front surface of the case 1 are formed in a horizontally long U-shaped shape in which a predetermined location on the front surface of the case 1 is long in the Y direction and short in the Z direction. It is formed by cutting out. The four U-shaped notches are provided in the longitudinal direction (Y direction) of the case 1 so as to have a U-shaped opening in the direction opposite to the direction toward the center of the case 1. ing.

  Further, as shown in FIGS. 1, 2A and 2B, the plate 1c having elasticity on the upper surface and the front surface of the case 1 is provided with a hemispherical protrusion 1b.

On the outer (Z direction side) surface of the elastic plate 1c provided on the upper surface of the case 1, two hemispherical projections 1b are provided.
Here, the hemispherical protrusion 1b is provided at a position close to the short side of the horizontally long U-shaped cutout and at a position away from a predetermined distance from the end of the elastic plate 1c. Thereby, the elastic force of the elastic plate 1c provided on the upper surface of the case 1 is changed in the direction (Z direction) from the inner side to the outer side of the upper surface of the case 1 via the hemispherical protrusion 1b. It has a transmitted structure.

Further, hemispherical protrusions 1b are provided on the outer surface (X direction side) of four elastic plates 1c provided on the front surface of the case 1, respectively.
Here, the hemispherical protrusion 1b is provided at a position close to the short side of the horizontally long U-shaped cutout and at a position away from a predetermined distance from the end of the elastic plate 1c. As a result, the elastic force of the four elastic plates 1c provided on the front surface of the case 1 is changed in the direction (X direction) from the inner side to the outer side of the front surface of the case 1 through the hemispherical protrusion 1b. It has a transmitted structure.

  When the case 1 is inserted and attached to the device body 2, the hemispherical protrusion 1 b on the upper surface of the case 1 contacts the inner wall of the upper surface of the device body 2. Further, the hemispherical protrusion 1 b on the front surface of the case 1 contacts the inner wall on the front surface of the device main body 2.

  That is, as shown in FIG. 5, when the case 1 is inserted and attached to the device main body 2, between the upper surface of the case 1 and the inner wall of the upper surface of the device main body 2, and between the front surface of the case 1 and the device main body 2. A gap ΔG corresponding to the height of the hemispherical protrusion 1b is formed between the front inner walls.

A gap ΔG formed between the upper surface of the case 1 and the inner wall of the upper surface of the device main body 2 is transmitted through the hemispherical protrusion 1b, and two elastic plates 1c provided on the upper surface of the case 1 are provided. Maintained by elastic force. Thereby, positioning of the case 1 with respect to the apparatus main body 2 in the height direction (Z direction in FIG. 1) is achieved.
Similarly, the gap ΔG formed between the front surface of the case 1 and the inner wall of the front surface of the device main body 2 is transmitted through the hemispherical protrusion 1b and has four elasticity provided on the front surface of the case 1. It is maintained by the elastic force of the plate 1c. Thereby, positioning of the fitting direction (X direction) of the case 1 with respect to the apparatus main body 2 is achieved.

  Next, the role of the cylindrical protrusion 1d of the case 1 and the notch 2b of the device body will be described.

  As shown in FIGS. 1 and 2A to 2C, the columnar protrusion 1d of the case 1 is preliminarily near the center of the upper surface and the lower surface of the case 1 in the longitudinal direction (Y direction in FIG. 1). One set is provided at each set position.

  Further, as shown in FIGS. 1, 3A and 3C, the notch 2b of the device main body 2 is preset in the vicinity of the center in the longitudinal direction (Y direction) of the upper surface and the lower surface of the device main body 2. One position is provided at each of the positions corresponding to the positions of the columnar protrusions 1d on the upper and lower surfaces of the case 1. The width dimension of the notch 2b, that is, the width in the Y direction in FIG. 1, is substantially the same as the diameter of the cylindrical protrusion 1d so that the notch 2b and the cylindrical protrusion 1d can be fitted. Yes. More specifically, the lateral width of the notch 2b is formed with a clearance that allows the cylindrical protrusion 1d to be positioned and moved in the X direction.

  When the case 1 is inserted and attached to the device main body 2, the columnar protrusions 1 d provided on the upper surface and the lower surface of the case 1 are fitted into the notches 2 b of the device main body 2, respectively. Thereby, positioning of the longitudinal direction (Y direction) of the case 1 with respect to the apparatus main body 2 is achieved.

The positioning in the X, Y, and Z directions described above will be summarized below.
First, when the case 1 is inserted into the device main body 2 and attached, the columnar protrusions 1d provided on the upper surface and the lower surface of the case 1 are along the notches 2b provided on the upper surface and the lower surface of the device main body 2. Next, the case 1 is moved relative to the device body 2. Positioning of the case 1 in the longitudinal direction (Y direction) with respect to the device body 2 is achieved by fitting the cylindrical protrusion 1d and the notch 2b.

  The fitting and fixing of the case 1 to the device main body 2 in the fitting direction (X direction) and prevention of the case from falling off are performed by fitting the upper claw 1a and the lower claw 1e provided in the case 1 and the square hole 2a provided in the device main body 2. Achieved through

  Positioning of the case 1 in the fitting direction (X direction) with respect to the device main body 2 is performed between the front surface of the case 1 and the front surface of the device main body 2 by a hemispherical protrusion 1b provided on the front surface of the case 1 and an elastic plate 1c. This is achieved by forming a gap ΔG having a certain width corresponding to the height of the hemispherical protrusion 1b between the inner walls.

  Positioning of the case 1 in the height direction (Z direction) with respect to the device main body 2 is performed between the upper surface of the case 1 and the upper surface of the device main body 2 by a hemispherical protrusion 1b and an elastic plate 1c provided on the upper surface of the case 1. This is achieved by forming a gap ΔG having a certain width corresponding to the height of the hemispherical protrusion 1b between the inner walls.

  According to Embodiment 1 which concerns on this invention demonstrated above, the following effects are acquired in the fixing device for fittingly fixing an apparatus main body and a case.

In the conventional fixing device, there is a problem that the upper and lower dimensions of the entire case including the guide are larger than the dimension between the upper and lower collars of the device main body. In addition, since the work of the brim of the device main body and the case of the case requires work with high work accuracy, there is a problem that the production cost of the product increases.
In addition, the conventional fixing device has a problem that after fitting, a wide gap corresponding to the width of the step provided on the base side of the flange of the device main body is generated between the device main body and the case. It was. In addition, in order to reduce the width of the step, it is necessary to perform work with high work accuracy, which increases the production cost of the product.

On the other hand, according to the fixing device according to the first embodiment, the dimension of the entire case can be made smaller than the dimension between the upper and lower collars of the device main body. Furthermore, the gap between the instrument body and the case can be made narrower than before by configuring the plate with elasticity and a hemispherical protrusion provided on the plate. As a result, it is possible to save the space of the product as compared with the conventional case.
Further, the fixing device according to the first embodiment does not require high work accuracy as in the conventional case in the work of the brim of the device main body and the case of the case. Thereby, a manufacturing cost can be reduced compared with the past.

  Furthermore, the fixing device according to the first embodiment includes an elastic plate, a hemispherical protrusion, and a cylindrical protrusion in the case in addition to the fitting claw and the square hole, and the apparatus body has a cylindrical shape. It has a notch corresponding to the protrusion. Thereby, fixation and positioning of the position of the case with respect to the case 1 apparatus main body can be achieved.

  1 case, 1a upper claw, 1b hemispherical protrusion, 1c elastic plate, 1d cylindrical protrusion, 1e lower claw, 2 device body, 2a square hole, 2b notch, ΔG gap

Claims (1)

A fixing device for fixing the case to the device main body, which can determine the position of the case in the longitudinal direction, the height direction and the fitting direction when the case is fitted to the device main body. And
The apparatus main body has a main body upper surface, a main body lower surface, and a main body front surface, and the case is fixed to the main body upper surface, the main body lower surface, and the main body front surface of the device main body so as to be opposed to each other. And the front of the case,
The case includes a claw on the upper surface of the case and the lower surface of the case, and the device main body includes square holes that respectively fit into the claw on the upper surface of the main body and the lower surface of the main body.
The case further includes columnar protrusions on the case upper surface and the case lower surface, and the apparatus main body further includes notches that fit into the columnar protrusion on the main body upper surface and the main body lower surface, When the main body and the case are fitted, the longitudinal position of the case with respect to the device main body is determined by fitting the columnar protrusion and the notch,
The case further includes an elastic plate on the upper surface of the case and the front surface of the case, the plate includes hemispherical protrusions, and when the device main body and the case are fitted, the case upper surface A gap corresponding to the height of the hemispherical protrusion is formed between the upper surface of the case and the inner wall of the upper surface of the apparatus main body by the plate and the hemispherical protrusion, whereby the case with respect to the apparatus main body is formed. The height position of is determined,
A gap corresponding to the height of the hemispherical protrusion is formed between the front surface of the case and the inner wall of the front surface of the device main body by the plate and the hemispherical protrusion on the front surface of the case. A fixing device in which the position of the case in the fitting direction with respect to the device body is determined.

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