JPH09312482A - Housing for GPS receiver - Google Patents

Abstract

(57) An object of the present invention is to provide a housing for a GPS receiver by assembling two frame bodies constituting the housing body without narrowing the space in the housing body. Provided is a housing for a GPS receiver that enables downsizing. SOLUTION: Two frame bodies 20 and 30 are brought into contact with each other, and a convex portion 27 and an engagement portion 36a are engaged with each other, so that the respective engagement protrusions 26b and 36b provided on the respective frame bodies are separated by a predetermined distance. An engaging pin 60, which is arranged with X maintained and has a diameter larger than the constant distance X, is inserted from a pin support portion 70 provided on one of the two frame bodies 20 and 30,
Engagement protrusions 26b, 3 arranged with a constant distance
6b, engaging surface 2 of engaging projections 26b, 36b
6c and 36c are pressed and inserted, and the two frame bodies 2
0 and 30 are pressed and fixed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a housing of a surveying instrument, and more particularly to a housing for a GPS receiver.

[0002]

2. Description of the Related Art As shown in FIGS. 9 and 10, in a conventional GPS receiver housing, a frame body 2 having a U-shaped cross-section with three sides opened and a U-shaped cross-section with three sides similarly opened. A box-shaped housing body 1 is configured by assembling the frame body 3 of the mold. A front cover 4 provided with a display unit on one side 1a of the opening of the box-shaped housing body 1.
However, the back cover 5 is attached to the other opening 1b.

A packing (not shown) is interposed between the abutting portions of the frame body 2 and the frame body 3 for waterproofing,
The frame body 2 and the frame body 3 are fastened by the fastening screws 6, and the contact portion is waterproofed.

[0004]

However, in the prior art shown in FIGS. 9 and 10, the boss 7 for inserting the screw 6 and the screw 6 for screwing the two frames are screwed together. It is necessary to form the engaging screw portion 8 in the frame body, so that the space in the housing body 1 is narrowed by that much, and there is a problem that the housing becomes large in order to secure a predetermined internal volume of the housing.

An object of the present invention is to provide two housings, which form a housing body, in a GPS receiver housing.
Assembling without narrowing the space in the housing body enables downsizing of the housing body.
It is to provide a housing for a PS receiver.

[0006]

A GPS receiver housing according to claim 1 of the present application is formed to have openings on both sides by engaging two frame bodies having a U-shaped cross section with openings on three sides. GPS receiver including a box-shaped housing body, a front cover provided with a display unit to be assembled into one opening of the housing body, and a back cover assembled to the other opening of the housing body. In the machine housing, of the two frame bodies, one frame body is provided with a plurality of inwardly projecting portions at an inner wall end portion on the side of an engaging portion with the other frame body, At least two engaging projections extending along the inner wall on the other side, and an engaging portion engaging the convex portion at an end portion on the engaging portion side of the inner wall of the other frame. A mating portion and an engaging protrusion continuously formed from the engaging portion, The two protrusions are brought into contact with each other and the protrusions and the engagement portions are engaged with each other, and the engagement protrusions provided on the respective frame members are arranged at a constant distance, An engaging pin having a diameter larger than a certain distance and inserted from a pin support portion provided on one of the two frame bodies is provided with an engaging protrusion that is arranged at the certain distance. It is characterized in that it is inserted between them, and is inserted while pressing the engagement surface of the engagement projection, and the two frame bodies are pressed into contact and fixed.

The two frames are provided with a step at the end on the side of the engaging part with the other frame, and a packing is provided at the engaging part of one of the frames having the step. Is provided, and a convex strip is provided on the other frame body so that the abutting portion of the two frame bodies maintains waterproofness.

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION A housing body 10 of a housing for a GPS receiver according to the present invention has openings on both sides by engaging a frame body 20 and a frame body 30 having a U-shaped cross section with openings on three sides. Is formed. A front lid 40 provided with a display 42 is attached to one opening 10a of the housing body 10, and a back lid 50 is attached to the other opening 10b.

On the inner wall of the frame body 20, the frame body 3
A plurality of inwardly projecting protrusions 27 at the end of the engaging portion with 0.
And at least two or more engaging protrusions 26b extending along the inner side wall of the frame body 30. Frame 30
In the inner wall of the, the engaging portion 36a that engages with the convex portion 27 and the engaging portion 36 at the end portion on the engaging portion side with the frame 20.
and an engagement protrusion 36b formed continuously from a.

Next, the convex portion 27 and the engaging portion 36a are engaged with each other. Then, an engagement protrusion 26b provided on the frame body 20,
The engaging projection 36b provided on the frame body 30 is fixed to the fixed distance X
To be installed.

The engagement pin 60 has a diameter larger than the predetermined distance X and is inserted from a pin support portion 70 provided on the frame body 30. The engagement pin 60 is inserted between the engagement protrusion 26b and the engagement protrusion 36b which are arranged at a constant distance X, and the engagement protrusion 26b and the engagement surface 26c of the engagement protrusion 36b. The frame body 2 is inserted while pressing 36c.
0 and the frame body 30 are pressed and fixed.

As described above, the frame body 20 and the frame body 30 constituting the housing body 10 are provided with the engaging projections 26b provided on the frame body 20 and the engaging projections 36b provided on the frame body 30.
By inserting the engaging pin 60 between them and pressing them into contact with each other, the boss portion for inserting the screw and the screw for screwing the screw, which are necessary when the two frame bodies are screwed together, are assembled. Since it is not necessary to provide the joint portion in the frame body and the space of the housing main body is not narrowed, it is possible to obtain the GPS receiver housing that enables downsizing of the housing main body.

[0013]

An embodiment of the present invention will be described below with reference to the drawings. The members, arrangements, and the like described below do not limit the present invention, and can be variously modified within the scope of the present invention.

FIGS. 1 to 8 show an embodiment of the present invention. FIG. 1 is a perspective view of a GPS receiver housing with a front cover removed, FIG. 2 is an enlarged view of an engaging portion, and FIG. FIG. 4 is an explanatory view of a procedure for assembling the frame body, FIGS. 5 and 6 are enlarged cross-sectional views of the assembly portion of the frame body, FIG. 7 is a cross-sectional view taken along the line AA of FIG.
2 is a sectional view taken along line BB of FIG.

The GPS receiver housing S of this embodiment has a housing main body 10, a front cover 40, and a back cover 50 as main components.

As shown in FIG. 1, the housing main body 10 of this embodiment is composed of a frame body 20 having a U-shaped cross-section with openings on three sides and a frame body 30 having a U-shaped cross-section with three openings on the same side. ing.

As shown in FIGS. 1 and 2, the frame 20
The ends of the side walls 20 a located on both sides of the side walls engage with the ends of the side walls 30 a of the frame body 30 to form the housing body 10.

As shown in FIG. 2, in the frame body 20 of this example, a step 21 is formed at the end portion of the side wall 20a on the side of the engaging portion, and the frame body 30 is formed on the end portion of the side wall 30a on the side of the engaging portion. ,
A step 31 is formed. The step 21 has a lower inner surface side, while the step 31 has a higher inner surface side and is formed so as to be fitted to each other. In addition, the step 31 has a ridge 32 formed at the step end on the inner surface side.

A packing 24 is interposed between the step 21 and the step 31. The packing 24 has the same length in the longitudinal direction as the length from the opening 10a to the opening 10b of the housing body 10, and is the same as the inner end of the step 31 provided in the frame 30. And is fixed to the fitting portion of the step 21 and the step 31.

The side wall 20a of the frame body 20 of this embodiment has a pair of hooks 26 on the inner surface of the end portion on the side of the engaging portion with the frame body 30.
Is provided. The hook 26 has an attachment portion 26a formed of two legs formed on the upper portion thereof.
Is fixed on the side wall 20a. And this mounting part 2
An engaging protrusion 26b is formed at an end portion extending downward from 6a, and the engaging protrusion 26b extends along the inner side wall of the side wall 30a that engages with the side wall 20a.

A pair of ribs 27 are provided between the pair of hooks 26 on the side wall 20a.
The rib 27 is inclined so that the engagement portion side with the frame body 30 becomes the lowest, and is formed in a wedge shape having a V-shaped cross section.

On the other hand, a pair of hooks 36 are provided on the inner surface of the end of the frame body 30 of this embodiment on the side of the side wall 30a that engages with the frame body 20. This hook 36 is provided with the engaging projection 3 on the lower side.
6b is formed, and a rectangular frame-shaped engaging portion 36a is formed on the upper portion in a continuous manner from the engaging protrusion 36b. The engagement portion 36 a extends along the side wall 20 a of the frame body 20, is arranged on the vertical line of the rib 27, and is configured to engage with the rib 27.

Further, pin supporting portions 70 are formed at the ends of the frame body 30 of this embodiment on the side of the opening 10a and the side of the opening 10b, respectively. A nut 70a is embedded in the pin support portion 70. This is to insert the locking pin 60 described below.

As shown in FIG. 3, the locking pin 60 of this embodiment is provided with male screw portions 61 at both ends of a rod-shaped elongated member 62. A head 63 formed continuously from the male screw portion 61 is provided at one end. The male screw portion 61 is formed so as to be screwed with the nut 70a. The diameter of the long member 62 is the same as that of the nut 70.
It is formed slightly smaller than the diameter of a, and the nut 70
Insert a freely.

As shown in FIG. 1, the front cover 40 of this embodiment is attached to one opening 10a of the housing body 10, and the front cover 40 is provided with a display section 42. A back cover 50 is attached to the other opening 10b. The front cover 40 and the back cover 50 are each provided with four holes 46.

The openings 10a and 10b of the housing body 10 are provided with four mounting portions 44 for mounting the front lid 40 and the back lid 50 to the housing body 10, respectively. A nut 44a is embedded in the mounting portion 44. The nut 44a is a screw 45 described below.
Are screwed together.

The screw 45 includes a male screw portion 45a and a head portion 45.
b, and the diameter of the male screw portion 45a is formed to be slightly smaller than the diameter of the hole 46, and the hole 46 can be freely inserted. The diameter of the head portion 45b is formed to be larger than the diameter of the hole 46, and the head portion 45b is engaged with the hole 46 so that the screw 45 does not penetrate through the hole 46.

Next, a method of assembling the frame body 20 and the frame body 30 to form the housing body 10 will be described.

As shown in FIG. 2, a step 21 is formed at the end of the side wall 20a of the frame body 20 of this embodiment on the side of the engaging portion, while the side wall 30a of the frame body 30 on the side of the engaging portion is formed. At the end,
A step 31 is formed. The packing 24 is interposed between the step 21 and the step 31, and the frame 20 and the frame 30
Engage and.

By bringing the frame body 20 and the frame body 30 into contact with each other, the engaging projection 26b of the hook 26 provided on the frame body 20 extends to the side wall 30a of the frame body, as shown in FIG. Engaging portion 36 of hook 36 provided on frame 30
a extends to the side wall 20a of the frame body 20.

The ribs 27 formed on the frame body 20 are
Since it is inclined so as to be lower toward the engaging portion side with the frame body 30 and is formed in a wedge shape having a V-shaped cross section, the engaging portion 36 a of the hook 36 extending from the frame body 30. But,
The frame body 20 and the frame body 3 are elastically engaged with each other through the inclination of the rib 27.
0 is fixed.

As shown in FIG. 3, the upper surface 26c of the engaging projection 26a of the hook 26 and the engaging projection 3 of the hook 36 are shown.
A distance X is formed between the lower surface 36c of 6b and the lower surface 36c.

Then, the engagement pin 60 is inserted into the nut 70a of the pin support portion 70 provided on the frame 30. The end portion of the engagement pin 60 is inserted into the nut 70a of the pin support portion 70, and the pin support portion 70 is penetrated while rotating the locking pin 60. Then, the locking pin 60 is attached to the engaging protrusion 26b.
The upper surface 26c and the lower surface 36c of the engaging protrusion 36b are inserted to the pin support portion 70 on the opposite side.

At this time, the outer diameter of the locking pin 60 is set to be slightly larger than the distance X. Therefore, the locking pin 60, the upper surface 26c of the engagement protrusion 26b,
The engaging projection 36b is inserted while pressing the lower surface 36c, the surface 26c is pushed down, and the surface 36c is pushed up. That is, the engagement pin 60 moves the hook 26 downward,
Press upward.

Therefore, the frame body 20 on which the hooks 26 are arranged is downwardly directed to the frame body 30 on which the hooks 36 are arranged.
Is pressed upward, and the frame body 20 and the frame body 30 are pressed against each other at the engaging portion. Thus, the rib 27 and the engaging portion 36a
The frame body 20 and the frame body 30, which have been fixed by the above, are pressed against each other and are more firmly engaged.

At this time, the ridge 3 is formed on the step 31 of the frame 30.
Since the frame body 20 and the frame body 30 are pressed and fixed, the packing 24 is compressed by the ridge 32, and the upper frame body 20 and the lower frame body 3 are provided as shown in FIG.
It is possible to fill the gap in the engaging portion of 0 and maintain waterproofness.

As shown in FIGS. 3 and 6, the engaging pin 60
Male screw portions 61 are provided at both ends of the. The male screw part 61 is provided on the side of the opening 10 a of the frame 30 and on the opening 10 a.
In each of the pin support portions 70 provided on the b side, a nut 70 embedded and integrated in the pin support portion 70
It is fixed by screwing with a.

As described above, by engaging the male screw portion 61 of the pin 60 with the nut 70a, the engaging pin 60 is restrained in the axial direction, and the engaging pin 60 is positioned between the engaging protrusion 36b and the engaging protrusion 26b. It does not disengage from the engaged position.

Further, when the engaging pin 60 is inserted into the pin supporting portion 70 for fixing the frame body 20 and the frame body 30, the pin supporting portions provided on the opening portion 10a side and the opening portion 10b side. The engaging pin 60 may be inserted from either side of the 70.

In this embodiment, the rib 27 and
An example in which the hook 26 and the hook 36 are arranged in pairs is shown, but at least two or more hooks may be arranged in the same number.

Regarding the arrangement of the frame body 20 and the frame body 30, the example in which the frame body 20 is arranged above the frame body 30 has been shown in this example, but the frame body 30 is arranged above and assembled. Alternatively, the frame body 20 and the frame body 30 may be assembled in parallel.

Next, a method of assembling the front cover 40 and the back cover 50 to the housing body 10 will be described.

First, the front lid 40 and the opening 10a of the housing body 10 are joined to each other, and the back lid 50 and the opening 10b of the housing body 10 are joined to each other. And screw 45
Through the holes 46 provided in the front lid 40 and the back lid 50,
The front cover 40 and the back cover 50 are assembled to the housing body 10 by screwing the screws 45 and the nuts 44 a together.

[0044]

As described above, according to the present invention, the two frame bodies constituting the housing main body are inserted into the engagement pins between the engagement protrusions provided on the respective frame bodies, and the two By assembling the frame body by pressing it, it is not necessary to provide a boss part for inserting a screw or a screwing part for screwing with the screw in the frame body, and the space of the housing body is not narrowed. The housing body can be downsized.

[Brief description of drawings]

FIG. 1 is a perspective view of a GPS receiver housing according to the present invention.

FIG. 2 is an enlarged view of a main part of a GPS receiver housing according to the present invention.

FIG. 3 is an explanatory view showing the assembling of the GPS receiver housing according to the present invention.

FIG. 4 is an explanatory view showing the assembling of the GPS receiver housing according to the present invention.

FIG. 5 is an enlarged sectional view of an engagement portion of the GPS receiver housing according to the present invention.

FIG. 6 is an enlarged sectional view of an engagement portion of the GPS receiver housing according to the present invention.

FIG. 7 is a sectional view taken along the line AA of FIG. 1;

FIG. 8 is a sectional view taken along the line BB of FIG. 1;

FIG. 9 is an explanatory sectional view showing a conventional example.

FIG. 10 is an explanatory sectional view showing a conventional example.

[Explanation of symbols]

 10 Housing Main Body 20 Frame 20a Side Wall 26 Hook 26a Mounting Part 26b Engagement Protrusion 26c Surface 27 Rib 30 Frame Body 30a Side Wall 36 Hook 36a Engagement Part 36b Engagement Protrusion 36c Surface 40 Front Cover 42 Display Part 44 Attachment Part 44a Nut 45 Screws 46 Holes 50 Back Lid 60 Engaging Pins 61 Male Threads 63 Head 70 Pin Supports 70a Nuts

Claims (2)

[Claims] 1. A box-shaped housing main body formed so as to have openings on both sides by engaging two frame bodies having U-shaped cross-sections that are open on three sides, and one opening of the housing main body. A front cover provided with a display part that is assembled to the part,
A housing for a GPS receiver, comprising: a back cover assembled to the other opening of the housing body, wherein one of the two frame bodies has an engaging portion with the other frame body. A plurality of inwardly projecting portions are provided at the end portion of the inner side wall on one side, and at least two or more engaging projections extending along the inner wall on the other side are provided. At an end of the inner wall on the side of the engaging portion, an engaging portion that engages with the convex portion, and an engaging protrusion that is continuously formed from the engaging portion,
And abutting the two frame bodies, engaging the convex portion and the engaging portion, and arranging the engaging protrusions provided on the respective frame bodies at a constant distance. Then, an engagement pin having a diameter larger than the predetermined distance and inserted from a pin support portion provided on one of the two frame bodies,
It is inserted between the engaging projections arranged with the certain distance kept therebetween, and the engaging surfaces of the engaging projections are inserted while being pressed, so that the two frame bodies are fixed by pressure contact. Characteristic GPS receiver housing. 2. The two frame bodies are provided with a step at an end portion on the engagement portion side with the other frame body, and a packing is provided at an engagement portion of one of the frame bodies having the step. 2. The GPS according to claim 1, wherein the other frame body is provided with a ridge so that waterproofness is maintained at a contact portion of the two frame bodies.
Receiver housing.