JPH0750873A - Portable radio equipment - Google Patents

Abstract

PURPOSE:To prevent the radio equipment from being damaged even if it is subjected to a high shock load such as a fall, etc., by providing an auxiliary rib in the longitudinal direction of a housing, on the inside surface of a bottom part of the housing of the portable radio equipment. CONSTITUTION:This equipment is provided with an opening part 8 formed in a bottom part of a housing 1 of the portable radio equipment, a bridge part 9, and a detaining part 10 of a battery unit provided on both sides of the opening part 8 of the bridge part 9. Also, this equipment is provided with an auxiliary rib 11 whose one end is fixed to the bottom part of the housing 1 on both sides of the opening part 8, and which extends in the longitudinal direction of the housing 1 from the bottom part of this housing 1. Moreover, this equipment is provided with a side wall plate 12 to which the other end of the auxiliary rib 11 is fixed, and whose end part is fixed to a side wall of the housing 1. By the auxiliary rib 11, even if the portable radio equipment falls on the ground due to carelessness, etc., of a speaker, and the bottom part comes into collision with the ground, shock force at the time of collision is dispersed to the auxiliary rib, and it can be prevented that a stress generated by shock force concentrates in an engaging part provided in the bottom part.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a portable wireless device in which the bottom portion of a housing is less likely to be deformed or damaged by an impact such as a drop.

[0002]

2. Description of the Related Art Generally, a small and thin portable wireless device has a battery unit mounted on the back surface of a housing, and an engaging portion corresponding to the shape of the battery unit is formed on the housing to form the battery unit. It is engaged with the housing. 8 to 10 are explanatory views of a conventional portable wireless device. A conventional portable wireless device will be described using these. In FIGS. 8 and 9, 1 is a housing, 2 is an electronic module housed in the housing 1, 3 is an input / output connector, 4 is a housing cover, 5 is a battery unit housing portion, and 6 is a portable radio after assembly. A machine body 7 is a battery unit housed in the electronic unit housing portion 5 of the portable wireless device body 6. This battery unit 7 has a protrusion 23
Is engaged with the locking portion 22 formed in the bridge portion 9 at the bottom of the portable wireless device body 6, and is attached to the battery unit storage portion 5. Generally, a housing used for a portable wireless device uses resin for weight reduction.

Next, a state in which the portable wireless device equipped with the battery unit 7 collides with the ground by being dropped or the like will be described. Figure 1
Reference numeral 0 is a cross-sectional explanatory view of the bottom portion of the casing 1 showing a state where the bottom portion of the portable wireless device collides with the ground by being dropped. In FIG. 10, arrow J indicates the direction of inertial force of the portable wireless device body 6 and the battery unit 7 with respect to the ground 25 at the time of collision, and arrow K indicates the direction of the reaction force that the bottom of the portable wireless device receives from the ground 25 on the contrary. L is the direction of the inertial force of the battery unit 7 which the battery unit 7 tries to drop along the contact surface 24. An impact force that deforms the bottom of the housing 1 is applied to the collision point 25 between the bottom of the portable wireless device and the ground 25, and the bottom of the housing 1 near the collision point 25 is easily deformed or damaged. Was becoming. In addition, the inertial force of the battery unit 7 is applied to the locking portion 22 formed in the bridge portion 9, and the bottom portion of the housing 1 is deformed due to the concentration of stress in the central portion of the bridge portion 9, and further, Damage occurs.

[0004]

As described above, in the conventional portable wireless device, the engaging portion is provided on the bottom of the housing on the battery unit side, and the battery unit is engaged with this engaging portion. If the caller inadvertently drops the portable wireless device on the ground, the inertial force of the battery unit will be concentrated on the above-mentioned engaging part depending on the collision state with the ground, and it may collide with the ground many times. Alternatively, when a high impact force is applied, there is a problem in that the periphery of the engaging portion on the bottom of the housing is deformed or, in some cases, damaged.

The present invention has been made to solve the above problems, and extends in the longitudinal direction of the casing from the bottom of the casing provided with the engaging portion and is fixed to the casing. Provided is a new portable wireless device which is less likely to be deformed or damaged around the engaging portion that engages the battery unit even if the bottom portion of the housing collides with the ground due to falling etc. The purpose is to do.

[0006]

According to a first aspect of the present invention, there is provided a portable wireless device, which is formed on the bottom of the housing on the back side of a storage unit for a battery unit held in the housing of the portable wireless device. The battery unit is mounted on the back surface of the storage portion by engaging the battery unit with the engagement portion, and extends in the longitudinal direction of the housing from the housing bottom portion on the front surface side of the storage portion, An auxiliary rib fixed to the case is provided in the case. According to another aspect of the present invention, there is provided a portable wireless device in which a housing portion for housing a battery unit is held inside a housing of the portable wireless device, and the housing portion is provided on both sides of a housing bottom portion on the battery unit side of the housing portion. A housing provided with a stopper and an opening into which an external connector is inserted in the bottom on the side opposite to the housing, and an auxiliary rib having one end fixed to the bottom of the housing on both sides of the opening. The auxiliary rib is provided with a side wall portion fixed to the other end of the auxiliary rib and fixed to the casing. According to a third aspect of the present invention, there is provided a portable wireless device in which an opening for inserting an external connector is formed in a bottom portion of a portable wireless device housing, and an input / output connector to which the external connector is connected is provided in the housing. It is arranged near the bottom and one end is fixed to the bottom of the housing on both sides of the opening, and an auxiliary rib extends in the longitudinal direction of the housing to hold the input / output connector, and the other end is It is supported by the housing. According to a fourth aspect of the present invention, there is provided a portable wireless device, wherein the input / output connector and the auxiliary rib according to the third aspect are provided with locking means for engaging with each other. According to a fifth aspect of the present invention, there is provided a portable wireless device in which the auxiliary rib has a curvature.

[0007]

In the portable radio device according to the first aspect of the present invention, even if the bottom of the mobile radio device collides with the ground due to the carelessness of the caller or the like, the impact force at the time of collision is assisted. The stress generated by the impact force is prevented from concentrating on the engaging portion provided on the bottom of the portable wireless device by being dispersed into the ribs. In the portable wireless device according to the second aspect of the present invention, the auxiliary ribs disposed on both sides of the opening and the side portions of the housing of the portable wireless device disperse the impact force at the time of a collision, so that the opening at the bottom of the portable wireless device. The concentration of stress due to the impact force generated in the periphery is prevented. In the portable wireless device according to the invention of claim 3, the input / output connectors arranged near the bottom of the housing extend in the longitudinal direction of the housing from the bottom of the housing on both sides of the opening, Since it is held by the auxiliary ribs fixed to the body, the displacement of the arrangement position due to the impact at the time of collision is prevented. In the portable wireless device according to the invention of claim 4, the input / output connector and the auxiliary rib are fixed by the engaging portion. A portable wireless device according to the invention of claim 5 is
Since the auxiliary rib has a curvature, the stress caused by the impact when the bottom of the housing collides with the ground is dispersed without being concentrated on a part of the auxiliary rib.

[0008]

【Example】

Example 1. An embodiment of the present invention will be described below with reference to FIGS. FIG. 1 is a perspective view for explaining the configuration of the portable wireless device main body. In FIG. 1, 1 is a housing of a portable wireless device, 2 is an electronic module housed inside the housing 1, 3 is an input / output connector, 4 is a rear surface of the housing 1 housing an electronic module 2 and an input / output connector 3. The housing cover 5 attached to the housing cover 5 is a battery unit housing formed on the back side of the housing cover 4. FIG. 2 is an explanatory diagram showing a state in which the battery unit is mounted on the portable wireless device main body in which the components shown in FIG. 1 are assembled. In FIG. 2, reference numeral 6 is a main body of the portable wireless device, and 7 is a battery unit. Also, FIG.
Alternatively, in FIG. 2, 8 is an opening located at the bottom of the portable wireless device and formed in the bottom of the housing 1, 9 is a bridge, and 10 is a battery provided on both sides of the opening 8 of the bridge 9. One end of the locking portion 11 of the unit is fixed to the bottom portion of the housing 1 on both sides of the opening portion 8, and auxiliary ribs 12 extending from the bottom portion of the housing 1 in the longitudinal direction of the housing 1 are provided. The other end of the auxiliary rib 11 is fixed, and the end plate is fixed to the side wall of the housing 1. A side wall plate 13 is provided in the lower portion of the battery unit, and is formed so as to engage with the locking portion 10, respectively. It is a protrusion. In the battery unit 7, the protrusion 13 is engaged with the locking portion 10 provided in the housing 1 as shown by the arrow a, and the battery unit 7 is mounted in the battery unit housing portion 5 of the housing cover 4. The auxiliary rib 11 has a curvature 14, and the protrusion 13 has a height slightly higher than the depth of the engaging portion 10. Therefore, when the battery unit 7 is attached to the portable wireless device body 6, At the bottom of the unit 7, only the protrusion 13 contacts the bottom of the housing 1.

Next, a state where the portable radio device falls from the hand due to the carelessness of the caller and the bottom portion of the portable radio device collides with the ground will be described with reference to FIGS. 3 and 4. FIG. 3 is a partial cross-sectional view showing a state where the bottom of the portable wireless device casing collides with the ground in the state as shown in the figure. For the sake of explanation, the main body 6 of the portable wireless device has a cross section of the auxiliary rib 11 and the battery unit 7.
And the engaging portions thereof show cross sections of the protrusion 13 and the engaging portion 10, respectively. In FIG. 3, reference numeral 15 denotes a ground surface (generally concrete or the like) that is harder than the housing 1 of the portable wireless device, and 16 denotes a contact surface between the battery unit 7 and the back surface of the battery unit housing 5 of the portable wireless device. The arrow B in the figure indicates that the ground 15 is the housing 1
Direction of the inertial force between the portable wireless device main body 6 and the battery unit 7 received from the bottom of the housing 1, arrow C represents the direction of the reaction force of the inertial force of the arrow B received from the ground 15 by the bottom of the housing 1, and arrow D represents the housing 1. The directions of the inertial forces along the contact surface 16 of the battery unit 7 that the locking portion 10 provided at the bottom of the battery receives from the protrusion 13 are shown. 4 is an explanatory view showing the state shown in FIG. 3 from the back of the portable wireless device main body 6. However, the housing cover 4 is omitted for the sake of explanation. In the figure, the same reference numerals indicate the same parts.

First, the portable wireless device falls from the hand of the caller, and the bottom of the housing 1 is placed on the ground 15 as shown in FIGS.
When the vehicle collides with, the inertial force of the portable wireless device body 6 and the battery unit 7 is applied to the ground 15 from the bottom of the housing 1, and at the same time, the reaction force is applied from the ground 15 to the bottom of the housing 1 in the direction of arrow C. Although the magnitude of the reaction force varies somewhat depending on the hand position of the caller, it is generally large enough to deform the bottom of the casing 1 such as denting the bottom of the casing 1. However, auxiliary ribs 11 are provided on both sides of the bottom of the housing 1, and most of the reaction force received from the ground 15 at the time of collision is the auxiliary rib 11 whose one end is fixed to the bottom of the housing 1.
Is suppressed by. The auxiliary rib 11 extends in the same direction as the direction of the reaction force (arrow C) and is fixed to the inner surface of the housing 1, and can prevent deformation such as a dent at the bottom of the housing 1 due to the impact at the time of a collision. .

Further, as shown in FIGS. 3 and 4, another inertial force acts on the bottom portion of the housing 1 due to its structure, which will be described. That is, the locking portions 10 for engaging the battery unit 7 on both sides of the bridge portion 9 at the bottom of the housing 1.
When the bottom of the portable wireless device collides with the ground 15 as shown in the figure, the battery unit 7 tries to further drop along the contact surface 16, and the locking unit 10 receives the inertial force of the battery unit. Added in the direction of arrow D. The inertial force of the battery unit 7 is also large enough to deform or damage the bridge portion 9, but an auxiliary rib 11 is fixed to the bottom of the housing 1 so as to hold the opening 8. Most of the inertial force of the battery unit 7 applied to the locking portion 10 is transmitted to the side portion 17 of the housing 1 and the auxiliary rib 10 as shown by arrows a to d. Therefore, the stress due to the inertial force of the battery unit 7 applied to the locking portion 10 is hardly transmitted to the bridge portion 9, preventing deformation and damage of the vicinity of the locking portion 10 at the bottom of the housing 1 and the bridge portion 9. obtain. Further, the auxiliary ribs 11 are fixed to the housing 1 so as to hold the openings 8 on both sides of the opening 8. The auxiliary ribs 11 are arranged near the bottom of the housing 1 by the side wall 12 to which the other end of the auxiliary rib 10 is fixed. The input / output connector is housed in a room (hereinafter referred to as a connector housing 18). That is, the auxiliary rib 10 not only disperses and transmits the inertial force of the battery unit 7 applied to the locking portion 10 to the housing 1, but also positions the input / output connector housed in the connector housing portion 18, Even if the bottom part of 1 collides strongly with the ground 15 due to a fall or the like, the position of the input / output connector is maintained near the opening 8.

Next, the relationship between the shape of the auxiliary rib 11 and the stress concentration will be described with reference to FIG. Generally, the stress generated inside an object tends to concentrate on an acute-angled portion or a notch, and causes cracks or cracks. Further, the auxiliary rib 11 provided on the bottom of the housing 1 is integrally formed with the housing 1 by using a mold by injection molding or the like, and the thickness thereof is formed to be a constant thickness due to the molding capability such as injection molding. Can not. Therefore, the auxiliary rib 11 is provided with a curvature 14 so that the transmitted inertial force of the battery unit 7 is not concentrated on one portion of the auxiliary rib 11 but can be dispersed to the housing 1. FIG. 5 is a characteristic diagram showing the relationship between the magnitude of curvature and the stress concentration coefficient. In FIG. 5, the horizontal axis represents R = radius of roundness and T = ratio of test piece thickness, and the vertical axis represents change in stress concentration coefficient (magnification) with respect to R / T. As shown in FIG. 5, the stress is less likely to concentrate as the R2 curvature increases. Therefore, the curvature 14 is determined in consideration of the weight of the battery unit 7 mounted on the back surface of the portable wireless device body 6.

Example 2. Next, another embodiment of the present invention will be described with reference to FIG. FIG. 6 is a partial perspective view showing the vicinity of the bottom of the housing of the portable wireless device and the input / output connector arranged near the bottom of the housing. In FIG. 6, 19 is a connector engaging portion provided on both sides of the input / output connector 3, and 20 is an auxiliary member fixed to the housing 1 so as to hold the input / output connector 3 on both sides of the opening 8 into which the external connector is inserted. It is a connector locking portion provided on the rib 11. The connector locking portion 20 is formed at a position sufficiently separated from the bottom of the housing 1. The input / output connector 3 is arranged and fixed so that the connector engaging portion 19 is engaged with the connector locking portion 20 when the input / output connector 3 is arranged in the connector housing portion 18.

FIG. 7 shows a state in which the external connector 21 is inserted from the opening 8 and connected to the input / output connector 3 which is arranged by engaging the connector engaging portion 19 with the connector engaging portion 20 in the connector housing portion 18. It is explanatory drawing of the vicinity of the bottom of the portable radio | wireless machine main body shown. For the sake of explanation, the battery unit storage section 5
Is not shown. As described above, when the portable wireless device is used in a state where the external connector 21 is connected to the input / output connector 3 arranged at the bottom of the housing 1, an arrow appears at the connecting portion between the external connector 21 and the input / output connector 3. External force is applied in the E to H directions. The external force in the directions of the arrows G and H is further used on the wall surface of the bottom portion of the housing 1 forming the opening 8. However, since the input / output connector 3 fixes the connector engaging portion 19 by engaging the connector engaging portion 20 provided on the auxiliary rib 11, the positional displacement does not occur even if an external force is applied by the external connector 21. . Further, since the positional displacement of the input / output connector does not occur, the periphery of the opening 8 of the housing 1 having the opening 8 is unlikely to be damaged by the external force of the external connector 21.

In the above embodiment, the protrusion 13 is provided at the bottom of the battery unit 7, and the locking portion 10 for engaging the protrusion 13 is provided at the bottom of the portable radio device main body 6.
Conversely, a concave locking portion may be formed at the bottom of the battery unit 7, and a protrusion may be formed at the bottom of the portable wireless device main body 6, and the battery unit 7 may be engaged with the bottom of the portable wireless device main body 6. If so, it is possible to obtain the same effects as those shown in the above embodiment.

[0016]

As described above, according to the first aspect of the present invention, the length of the casing extends from the casing bottom near the engaging portion for engaging the battery unit formed on the casing bottom. Since the auxiliary ribs extending in the direction and fixed to the housing are provided,
It is possible to prevent the bottom portion of the portable wireless device from being dropped from the user's hand and colliding strongly with the ground to deform or damage the bottom portion of the housing. According to the invention of claim 2, since the auxiliary ribs having one end fixed to the bottom of the housing are provided on both sides of the opening, and the side wall portion fixing the other end of the auxiliary rib is fixed to the housing, While reinforcing the bottom of the case around the opening,
It is possible to prevent the bottom portion of the portable wireless device from being dropped from the user's hand and colliding strongly with the ground to deform or damage the bottom portion of the housing. According to the invention of claim 3, the housing extends from the bottom of the housing in the longitudinal direction of the housing so as to hold the input / output connectors arranged on the bottom of the housing on both sides of the opening. Since the auxiliary rib fixed to the body is provided, it reinforces the bottom part of the housing around the opening, and even if it falls from the user's hand and the bottom part of the portable radio collides strongly with the ground, the bottom part of the housing remains The input / output connector can be prevented from being displaced due to the impact at the time of collision without being deformed or damaged. According to the invention of claim 4, the auxiliary rib for holding the input / output connector is provided with the engaging portion, and the engaging portion for engaging with the engaging portion is provided in the input / output connector. Even if the external force of the external connector is applied to the connection portion with the input / output connector, the position of the input / output connector does not shift. Furthermore, the external force of the external connector is not applied to the side wall of the opening provided at the bottom of the housing, and the housing bottom around the opening is prevented from being deformed or damaged. According to the invention of claim 5, since the curvature is formed in the auxiliary rib fixed to the housing, the stress generated at the bottom of the housing due to the collision with the ground does not concentrate on a part of the auxiliary rib. It is possible to efficiently disperse the impact force dispersed on the entire casing and acting on the bottom of the casing to the casing.

[Brief description of drawings]

FIG. 1 is a perspective view showing the configuration of a portable wireless device body according to an embodiment of the present invention.

FIG. 2 is an explanatory diagram showing mounting of a battery unit of a portable wireless device according to an embodiment of the present invention.

FIG. 3 is a partial cross-sectional view of a portable wireless device according to an embodiment of the present invention at the time of a ground collision.

FIG. 4 is a partial explanatory view of a portable wireless device according to an embodiment of the present invention when a ground collision occurs.

FIG. 5 is a stress concentration characteristic diagram showing an embodiment of the present invention.

FIG. 6 is a partial explanatory view showing the structure of a portable wireless device according to another embodiment of the present invention.

FIG. 7 is an explanatory view of a portable wireless device according to another embodiment of the present invention when a connector is connected.

FIG. 8 is an explanatory diagram showing mounting of a battery unit of a conventional portable wireless device.

FIG. 9 is a partial cross-sectional view of a conventional portable wireless device during a ground collision.

FIG. 10 is an explanatory cross-sectional view of the bottom of the housing 1 showing a state where the bottom of the portable wireless device has dropped and collided with the ground.

[Explanation of symbols]

 1 Case 5 Battery Unit Storage 7 Battery Unit 8 Opening 9 Bridge 10 Locking Part 11 Auxiliary Rib 12 Sidewall 13 Protrusion 14 Curvature

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[Procedure amendment]

[Submission date] September 10, 1993

[Procedure Amendment 1]

[Document name to be amended] Statement

[Correction target item name] Figure 8

[Correction method] Change

[Correction content]

FIG. 8 is a perspective view showing a configuration of a conventional portable wireless device main body.

[Procedure Amendment 2]

[Document name to be amended] Statement

[Correction target item name] Figure 9

[Correction method] Change

[Correction content]

FIG. 9 is an explanatory diagram showing mounting of a battery unit of a conventional portable wireless device.

[Procedure 3]

[Document name to be amended] Statement

[Name of item to be corrected] Fig. 10

[Correction method] Change

[Correction content]

FIG. 10 is a partial cross-sectional view of a conventional portable wireless device during a ground collision.

Claims (5)

[Claims] 1. A storage unit for a battery unit is held in a housing of a portable wireless device, and the battery unit is engaged with a locking portion formed on the bottom of the housing on the back side of the storage unit of the battery unit. The battery unit is attached to the back surface of the housing portion, extends in the longitudinal direction of the housing from the housing bottom portion near the engaging portion on the front side in the housing, and is fixed to the housing. A portable wireless device characterized by having an auxiliary rib. 2. A storage unit for storing a battery unit in a housing of a portable wireless device, holding the storage unit inside, and providing locking portions on both sides of a bottom portion of the storage unit on the battery unit side, A housing provided with an opening into which an external connector is inserted in a bottom portion of the storage portion on the side opposite to the battery unit side, and arranged on both sides of the opening portion on the side opposite to the battery unit side of the storage portion. A portable radio having one end fixed to the bottom of the housing and an auxiliary rib fixed to the other end of the auxiliary rib and having an end fixed to the housing. . 3. A housing formed with an opening into which an external connector connected at the bottom of the portable wireless device is inserted, and an input / output arranged near the bottom of the housing and connected to the external connector. On both sides of the connector, the opening, one end is fixed to the bottom of the housing, extends in the longitudinal direction of the housing to hold the input / output connector, and the other end is supported by the housing. A portable wireless device comprising an auxiliary rib. 4. The auxiliary rib for holding the input / output connector according to claim 3, wherein an engaging portion is provided on the auxiliary rib, and an engaging portion engaging with the engaging portion is provided on the input / output connector. And a portable radio. 5. A portable radio device according to claim 1, wherein the auxiliary rib has a curvature.