CN2186912Y - Casing structure of satellite positioning avigraph - Google Patents

Abstract

The utility model relates to a casing structure of GPS satellite positioning navigators. The casing structure of GPS satellite positioning navigators is suitable for various GPS satellite positioning navigators and casings of miniature instruments working under adverse environment. The entire casing is composed of a front cover plate and a back cover plate. Three printing circuit plates are respectively installed on the front cover plate and the back cover plate and are electrically connected with each other through flat cables. The front cover plate is connected with the back cover plate through screws. The seaming position between the front cover plate and the back cover plate is sealed by a rubber ring, and the space among the front cover plate, the back cover plate, a keyboard, a display screen and a wire connecting terminal is also sealed by the rubber ring. The utility model has the advantages of good tightness, compact structure, beautiful appearance, convenient installation and reliable work.

Description

Casing structure of satellite positioning avigraph

The utility model relates to the shell structure of gps satellite location navigator, is applicable to various gps satellite location navigators and at the housing than the miniature instrument of working under the rugged environment.

There is poor sealing in existing Instrument shell, and corrosion and short circuit cause the instrument cisco unity malfunction, and connector are too much easily, and space utilization is unreasonable and keep in repair, detect inconvenience, therefore can not satisfy the requirement of gps satellite location navigator to housing.

In order to address the above problem, the utility model provides a kind of good airproof performance, and mechanical, electrical connection is reliable, and installation and maintenance are convenient, the new hull of compact conformation.

The technical measures of finishing the utility model task are: whole case design becomes forward and backward two cover plates form, three printed circuit board are installed on the front and rear cover plate respectively, fastening with screw, and be electrically connected with flat cable, after forward and backward cover plate is opened, arrange facing up of components and parts, be convenient to test, maintenance, the threaded connector between the front and rear cover plate all adopts nested metal nuts, so that the screw fastening strength improves, all need sealing place all use seal with elastometic washer.

Fig. 1 is a front view of the present utility model, and Fig. 2 is the C-C cut-open view ( part 23,24,25 and 26 is not shown in the drawings) of Fig. 1, and Fig. 3 is that the A-A view of Fig. 2 cuts open, and Fig. 4 is the B-B cut-open view of Fig. 2.

In conjunction with the accompanying drawings structure of the present utility model and embodiment are described as follows:

Protecgulum (1) and female lug (1a) and projection (2a) the mutually sleeve connection of bonnet (2) by both sides, main printed circuit board (19) is fixed on the back shroud (2) by screw (20), to receive head and switching antenna module plate (17) and main printed circuit board (19) by four intermediolateral columns (15) is threaded with back shroud (2), keyboard pcb (9) is connected with front shroud (1) by five self-tapping screws, display circuit board (4) is connected with front shroud (1) by four self-tapping screws, before, back shroud is connected with metal nuts (13) by long spiro nail (14), power lead and signal wire terminal (21) also are installed on the back shroud (2), supporting screw (25) is arranged respectively in the middle of the casing both sides, the hole of passing support (23) is screwed in the metal nuts (26) that knob (24) is nested with, the seam crossing of front shroud and back shroud has O-ring seal (3), sealing frame (5) one side is adhered on the front shroud (1), one side is bonded with the optics organic glass (6) of LCDs, between power lead and signal wire terminal (21) and the back shroud (2) packing washer (22) is arranged, front shroud (1) has been gone up specialized designs flange, conductive rubber is that corresponding rubber key is arranged on the TR thin rubber plate by strong (10), compressing the rubber keyboard after front shroud covers seals, before the whole casing, between the back shroud, cover board hole with between corresponding is connected as front shroud and keyboard, connection terminal and back shroud, seal by rubber blanket between display screen and the front shroud, to adapt to such as all keeping the navigating instrument operate as normal under the marine condition of work, the P.e.c. of front and rear cover plate is electrically connected by flat cable.

Whole housing is a rectangle box, and the ABS plastic injection mo(u)lding except that nested nut, is all adopted in its contour dimension length * wide * thick=257 * 135 * 60.

The utility model has the advantages that:

1. easy to assembly, easy to maintenance: three main printed circuit board (PCB)s are contained in respectively on the front and rear cover plate, and it is very convenient to assemble, and the components and parts that reliability is lower all concentrate on the printed circuit board, keep in repair, change all very convenient.

2. compact conformation, be electrically connected reliable: after front and rear cover plate closed, printed circuit board (PCB) overlapped each other in casing, rationally utilize the space, the quantity of printed circuit board (PCB) reduces to minimum taking into full account under the prerequisite of function, reduced the connector pad, has improved reliability of electrical connection.

3. firm: all printed circuit board (PCB)s all are screwed on casing, install reliably, and the assembling of front and rear cover plate, owing to adopted the nested nut of metal, intensity improves greatly, for improving complete machine intensity on the casing wall, has designed reinforcement.

4. good airproof performance: the slit that complete machine is all, all with the rubber seal sealing, the fluid sealant sealing is also used in some place, and sealing is reliable.

Claims (3)

1, the shell structure of gps satellite location navigator, it is characterized in that: before whole housing is, back two cover plates form, main printed-wiring board (PWB) (19) is fixed in back shroud (2) by screw (20) and goes up by four intermediolateral columns (15) and will receive head and transfer antenna module plate (17) and main printed panel (19) and back shroud (2) are threaded, keyboard pcb (9) is connected with front shroud (1) by five self-tapping screws, display circuit board is connected with front shroud (1) by four self-tapping screws, there is female lug (1a) both sides of front shroud (1), there is projection (2a) both sides of back shroud (2), before, back shroud is connected with metal nuts (15) by long spiro nail (14), power lead and signal wire terminal (21) also are installed on the back shroud (2), there is supporting screw (25) to fix by the hole of support (23) and the metal nuts (26) of knob (24) respectively in the middle of the casing both sides respectively, before, the seam crossing of back shroud has O-ring seal (3), be bonded with sealing frame (5) between the optics organic glass (6) of display screen and the front shroud (1), between power lead and signal wire terminal (21) and the back shroud (2) packing washer (22) is arranged, the periphery place that front shroud (1) is gone up corresponding conductive rubber button (10) is provided with flange.

2, by the described shell structure of claim 1, it is characterized in that: front shroud (1) is injected with reinforcement with the wall of back shroud (2).

3, by claim 1 or 2 described shell structures, it is characterized in that the nut on housing and the knob all is a metal insert, as four nuts (13), five nuts (18) and two nuts (26).

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