JP2000340196A - Mounting/dismounting structure of battery pack - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a mounting/dismounting structure of a battery pack having a locking member capable of easily mounting it on an electronic appliance case and smoothly operating to lock the battery pack surely. SOLUTION: This structure is provided with a rear case 10 having a recessed battery housing 14 for detachably holding a battery pack 30 in a predetermined face, a front case 20 to be fit in the rear case 10 and the battery pack 30 electrically connected to a printed circuit board 21 for supplying power is provided by housing it in the battery housing 14 of the rear case 10. Provided is a locking member 40 having a guide extended in a bar shape mounted with a spring 49 for being inserted into a guide hole 11a of the rear case 10, which is energized by the spring 49 to be projected into the battery housing 14 to engage with a locking part 34 of the battery pack 30 for locking. The guide of the locking member 40 is formed so as to have a stage and taper the outer diameter in the free end direction of the bar.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a battery pack attachment / detachment structure, and more particularly, to a battery pack attachment / detachment structure provided with a lock member for detachably attaching a battery pack to a battery storage portion of an electronic device case.

[0002]

2. Description of the Related Art In recent years, in a portable electronic device such as a PHS telephone, a portable telephone, a notebook personal computer, etc., a battery pack can be detached by forming a concave battery housing portion on a predetermined surface of a case. , And a plurality of detachable battery packs are provided so that the charging time can be shortened and the battery pack can always be used. Here, the battery accommodating section is provided with a lock member which is urged by the urging member and protrudes therefrom, and has a battery pack attaching / detaching structure which is engaged with the battery pack and locked. In this conventional battery pack attachment / detachment structure, it is important that the lock member operates well and securely engages and locks the battery pack. FIG. 16 is a configuration diagram showing a conventional attachment / detachment structure of a battery pack employed in such a mobile phone. FIG. 17 shows the lock member 80 and the spring 89 as viewed from the direction of arrow D shown in FIG.
FIG. FIG. 18 is a front view showing the rear case 50 as viewed from the direction of the arrow E shown in FIG. FIG. 19 is a diagram showing an operation of mounting the battery pack 70 on the rear case 50 in the FF section shown in FIG. 16, and FIG. 19A shows a state before the battery pack 70 is mounted. FIG. 19B shows a state in which the battery pack 70 is mounted, and FIG.
0 is shown in each case. Also, FIG.
FIG. 17 is a diagram illustrating a state in which a spring 89 attached to the lock member 80 illustrated in FIG. 16 is inclined. Also, FIG.
FIG. 17 is a view showing a state in which a spring 89 is inclined when the lock member 80 shown in FIG. 16 is mounted. FIG.
22 is a diagram showing another embodiment of the lock member 80 shown in FIG. FIG. 23 is a view showing still another embodiment of the lock member 80 shown in FIG.

As shown in FIG. 16, a conventional battery pack mounting / removing structure employed in a portable telephone comprises a front case 60 and a rear case 50 forming the exterior of the portable telephone. A battery pack 70 housed in the battery housing portion 54 of the rear case 50 and provided with a lock member 80 which is engaged with and fixed to the battery pack 70 by being urged by the spring 89 and protruding from the battery housing portion 54 of the rear case 50. ing.

[0004] Here, the rear case 50 is formed integrally with a battery accommodating portion 54 for accommodating the battery pack 70 by forming one end side in a concave shape. This battery storage section 54
An opening hole 52 that opens in a rectangular shape on the bottom surface on one end side;
An insertion portion 51 for inserting the lock member 80 near the opening hole 52 is provided. Further, the insertion portion 51 includes a guide hole 51a penetrating through the back surface of the rear case 50, and engagement portions 51b formed on both sides of the guide hole 51a. Further, the battery housing portion 54 has a concave portion 53 formed in a concave shape on the other end side facing the engaging portion 51b. The front case 60 is fitted to the rear case 50 to form a case exterior of the mobile phone.

[0005] The front case 60 houses a rectangular thin plate-shaped printed circuit board 61 therein. A connection terminal 62 having a box-shaped main body and having a plurality of protruding terminals is mounted on the mounting surface of the printed board 61. And
The connection terminal 62 is formed by fitting the rear case 50 and the front case 60 to each other to form the opening 52 of the rear case 50.
And is formed so as to protrude from the surface of the battery storage portion 54.

In the battery pack 70, a projection 73 having a substantially rectangular shape and a predetermined thickness and protruding toward one end is formed integrally with a locking portion 74 formed in a concave shape on the surface at the other end. are doing. The battery pack 70 includes a locking portion 74.
A plurality of arranged and exposed terminals 72 are provided in the vicinity of the formation of the terminal 72. Therefore, the battery pack 70 is
Is provided in the battery housing portion 54 of the rear case 50.
3 (see FIG. 19A), and the terminal 72 is fitted to the opening 52 so that the connection terminal 62 protruding from the opening 52 abuts and is electrically connected to the printed circuit board 61. You. At this time, the insertion portion 51 of the rear case 50
The lock member 80 urged by the spring 89 protrudes. Therefore, when the battery pack 70 is stored in the battery storage portion 54, the locking member 80
The battery pack 70 is fixed to the battery storage portion 54 by being fitted into and engaged with the battery pack 70.

[0007] As shown in FIG. 17, the lock member 80 is urged by a spring 89 to protrude from the battery housing portion 54 and fit into the locking portion 74 of the battery pack 70 (see FIG. 19). 82 and engaging claws 84 extending in opposite directions with claws from both side surfaces of the claws 82.
And a guide portion 86 that extends in a bar shape at the center of the engagement claw 84 and has a spring 89 attached thereto and is inserted into a guide hole 51a provided in the insertion portion 51 of the rear case 50 shown in FIG. Is formed. Therefore, the lock member 8
As shown in FIG. 16, as shown in FIG. 16, when the spring 89 is inserted into the guide portion 86 and is inserted into the insertion portion 51 of the rear case 50, the battery is always mounted on the battery storage portion 54. At this time, as shown in FIG. 18, the locking claw 84 engages with the engaging portion 51 b of the rear case 50 and stops the projection by the bias of the spring 89 at a predetermined position. As a result, the lock member 80 is
As shown in (a), the claw portion 82 is supported in a state where it protrudes from one end side of the battery storage portion 54.

When the battery pack 70 is mounted by the conventional battery pack mounting / removing structure employed in the portable telephone formed as described above, first, as shown in FIG. The rear case 50 is engaged with the concave portion 53 provided in the battery storage portion 54. Then, the battery pack 70 has the locking portion 74 side shown in FIG.
Lowering in the direction of the arrow shown in FIG.
Store in 4. At this time, the battery pack 70 slides the lock member 80 in the direction opposite to the biasing direction of the spring 89 by contacting one end of the lock portion 74 on the claw portion 82 of the lock member 80.

As a result, the lock member 80 is
As shown in (b), the claw portion 82 is
Of the spring 8 and slides in the direction opposite to the biasing direction of the spring 89.
9. Shrink 9. Here, the locking member 80 is
6 slides along the guide hole 51, so that the spring 89
The operation of sliding in the direction opposite to the urging direction can be favorably guided.

[0010] By further applying a pressing force to the battery pack 70 and storing it in the battery storage section 54, the battery pack 70 shown in FIG.
As shown in (c), the claw portion 82 of the lock member 80 is fitted into the locking portion 74 of the battery pack 70 to lock the battery pack 70 in the battery storage portion 54. Thus, the battery pack 70 has the projections 73 and the locking portions 74 provided at both ends fixed and supported by the concave portions 53 and the lock members 80.

As described above, in the conventional battery pack attaching / detaching structure, the lock member 80 is urged by the spring 89 at one end side of the battery housing portion 54 so as to protrude and engage with the battery pack 70, and 70 is locked in the battery storage 54.

However, in the conventional battery pack attaching / detaching structure, as shown in FIG. 16, a spring 89 is mounted on the guide portion 86 (see FIG. 17) of the lock member 80 and inserted into the insertion portion 51 of the rear case 50. In this case, as shown in FIG. 20, since the guide portion 86 is formed to be thin, the spring 89 is inclined with respect to the extending direction of the guide portion 86. As a result, as shown in FIG. 21, when inserting the guide portion 86 into the guide hole 51 of the rear case 50, the lock member 80 has a problem that it becomes difficult to insert the guide member 86 due to the inclination of the spring 89. .

Further, in order to solve such a problem,
When the outer diameter of the guide portion is formed large and the inclination is suppressed by approaching the inner diameter of the spring, the guide hole 51 must be provided as small as possible to prevent the spring 89 from entering as shown in FIG. There was a problem that the guide portion 87 inserted into the 51 and having a large outer diameter was caught by the frictional force and the sliding operation of the lock member 80 could not be performed smoothly.

Further, when the outer diameter of the guide portion and the inner diameter of the spring are formed to have substantially the same size in order to completely suppress the inclination of the spring, as shown in FIG. Guide portion 88 formed to the same size
As shown in FIG. 19 (b), when the battery pack 70 is brought into contact with the lock member 80 to slide the battery pack 70, the sliding operation is performed. There was a problem that it could not be performed smoothly. Also,
In this case, similar to the lock member shown in FIG. 22, FIG.
In this case, the guide portion 88 is caught by the guide hole 51, and the sliding operation cannot be performed smoothly.

[0015]

As described above, in the conventional battery pack attaching / detaching structure, as shown in FIG. 20 and FIG.
9 is inclined with respect to the extending direction of the guide portion 86,
There has been a problem that the assembly process of inserting the guide portion 86 into the guide hole 51 of the rear case 50 becomes an obstacle and reduces the manufacturing efficiency. Further, in the conventional battery pack attaching / detaching structure, as shown in FIG. 22, when the outer diameter of the guide portion is made closer to the inner diameter of the spring in order to suppress the inclination of the spring and facilitate the assembly process, the guide hole 51 As a result, the guide portion 87 is caught by the frictional force and the sliding operation cannot be performed smoothly, and the lock member 80 cannot reliably lock the battery pack 70. Further, in the conventional battery pack attaching / detaching structure, as shown in FIG. 23, when the outer diameter of the guide portion and the inner diameter of the spring are formed to be substantially the same size, the spring 89 and the guide portion 88 are formed.
Between the guide hole 51 and the guide portion 88.
The sliding operation cannot be performed more smoothly than the locking member shown in FIG. 22 due to the frictional force generated between the battery pack 70 and the locking member 80 as shown in FIG. There is a problem that the feeling of operation of sliding by contacting with the lens is impaired. An object of the present invention is to solve such problems and to provide a battery pack attaching / detaching structure including a lock member that can be easily attached to an electronic device case, operates smoothly, and securely locks the battery pack. .

[0016]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention provides a case of an electronic device having a concave battery housing for detachably holding a battery pack on a predetermined surface, and a battery of the case. A battery pack that is electrically connected to a printed circuit board disposed in the case to supply electricity by being housed in the housing part, and a bar-shaped extending one end with an elastic member inserted is slid into the case. And a lock member provided with a claw portion that protrudes into the battery housing portion by the bias of the elastic member and engages with and locks on a predetermined surface of the battery pack. Is formed so as to have either a step or a taper toward the free end direction extending in the shape of a bar so that the outer diameter is reduced.

Here, the guide portion is formed so as to have at least two steps toward the free end direction extending in the shape of a bar so that the outer diameter is reduced, and the guide portion has a stepped portion toward the free end direction. It is preferable to form either an inclined surface or a curved surface so as to be gradually thin. Further, in another embodiment of the guide portion, the guide member may be formed in a tapered shape so that the outer diameter extending in a cylindrical shape from the lock member and extending in a rod shape at a predetermined position becomes thinner toward the free end direction. Is preferred. The guide is
It is preferable to provide a rib that is inserted into the coil-shaped elastic member, protrudes from the outer periphery of the insertion end, and press-fits and fixes the elastic member. Further, it is preferable that at least one rib is formed in an elongated shape in parallel with the extending direction of the guide portion so that the guide portion protrudes from the outer periphery where the guide portion extends like a bar. Also,
In another embodiment of the rib, it is preferable that the guide portion is provided so as to protrude in a substantially annular or spiral shape on the outer periphery extending in a rod shape. In addition, the case of the electronic device is preferably a case of an electronic device such as a PHS phone, a mobile phone, and a notebook personal computer for carrying.

[0018]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a battery pack according to an embodiment of the present invention. FIG. 1 is a configuration diagram showing an embodiment in which a battery pack attaching / detaching structure according to the present invention is employed in a mobile phone. FIG. 2 is a front view showing the lock member 40 and the spring 49 as viewed from the direction of arrow A shown in FIG. FIG. 3 is an enlarged view showing details of the guide section 46 shown in FIG. FIG. 4 is a cross-sectional view showing a state before the battery pack 30 is mounted on the rear case 10 in the BB cross section shown in FIG. FIG. 5 is an enlarged view showing details of the guide section 46 shown in FIG. FIG.
Is the battery pack 30 shown in FIG.
FIG. 6 is a cross-sectional view showing a state where the camera is mounted on the camera. FIG.
FIG. 7 is an enlarged view showing details of a guide section 46 shown in FIG. 6. FIG. 8 is a cross-sectional view showing a state where the battery pack 30 shown in FIG. FIG. 9 is a view showing another embodiment of the lock member in which the inclined portion 46d of the guide portion 46 shown in FIG. 3 is formed in a spherical shape. FIG. 10 is a view showing another embodiment of the guide section shown in FIG. 3, wherein FIG. 10 (a) shows a guide section formed in two steps and FIG. 10 (b) shows a guide section formed in four steps. 10 (c) shows a guide portion formed in a conical shape. FIG. 11 is a view showing still another embodiment of the guide section in which a rib 46f for fixing the spring 49 is formed on the guide section shown in FIG. FIG. 12 is similar to FIG.
FIG. 4 is a cross-sectional view showing a cross section taken along line CC shown in FIG. FIG. 13 is a diagram showing an embodiment in which only one rib shown in FIG. 12 is provided. FIG. 14 is a view showing another embodiment of the rib shown in FIG. FIG.
FIG. 12 is a view showing still another embodiment of the rib shown in FIG. 11.

As shown in FIG. 1, an embodiment in which a battery pack attaching / detaching structure according to the present invention is applied to a mobile phone is similar to the prior art shown in FIG. A battery pack 30 housed in a concave battery housing portion 14 formed in the rear case 10. The battery pack 30 is urged by a spring 49 to project into the battery housing portion 14 of the rear case 10. And a lock member 40 for engaging and fixing the battery pack 30.

Here, the rear case 10 is formed integrally with a battery housing portion 14 for housing the battery pack 30 by forming a predetermined surface in a concave shape. This battery storage unit 14
Has an opening hole 12 that opens in a rectangular shape on the bottom surface, and an insertion portion 11 into which the lock member 40 is inserted near the opening hole 12. The insertion portion 11 includes a guide hole 11a penetrating through the back surface of the rear case 10, and engagement portions 11b formed on both sides of the guide hole 11a. Also, the battery storage unit 1
4 has a concave portion 13 (see FIG. 4) formed in a concave shape on the other end side facing the insertion portion 11. The exterior of the mobile phone is formed by fitting the front case 20 to the rear case 10.

The front case 20 houses a rectangular thin board-shaped printed circuit board 21 inside. On the mounting surface of the printed circuit board 21, a connection terminal 22 having a box-shaped main body and having a plurality of terminals protruding is mounted. And
The connection terminal 22 is formed by fitting the rear case 10 and the front case 20 to each other.
And is formed so as to protrude from the surface of the battery storage portion 14.

The battery pack 30 is formed integrally with a substantially rectangular projection 33 having a predetermined thickness and projecting toward one end, and a locking portion 34 formed in a concave shape on the surface at the other end. are doing. The battery pack 30 includes a locking portion 34.
A plurality of terminals 32 arranged and exposed are provided in the vicinity of the area where. Therefore, the battery pack 30 is
1 provided in the battery housing portion 14 of the rear case 10
3, the terminal 32 is fitted to the opening hole 12, and the connection terminal 22 protruding from the opening hole 12 is brought into contact with and electrically connected to the printed circuit board 21. At this time, the lock member 40 urged by the spring 49 projects from the insertion portion 11 of the rear case 10. Therefore,
When the battery pack 30 is stored in the battery storage section 14, the locking member 40 has a distal end fitted into the locking section 34 and fixes the battery pack 30 to the battery storage section 14.

As shown in FIG. 2, the lock member 40 has a claw portion 42 fitted into the locking portion 34 of the battery pack 30 (see FIG. 1), and extends from both sides in a direction opposite to the claw portion 42. With a claw shape at the tip end thereof
And a guide portion 46 that extends in a bar shape at the center of the engagement claw 44 to insert and support the spring 49 and that is inserted into the guide hole 11 a of the rear case 10.

Here, the guide portion 46 is different from a rod-shaped elongated member as in the prior art shown in FIG.
As shown in FIG. 3, the one-step portion 46 extending from the claw portion 24
a, a two-step portion 46b extending from the tip of the one-step portion 46a and having an outer diameter narrower than the one-step portion 46a, and a two-step portion extending from the tip of the two-step portion 46b to reduce the outer diameter. It is formed by a three-step portion 46c formed thinner than 46b. Therefore, in the present embodiment, the guide portion 46 of the lock member 40 is formed to extend in a bar shape so as to have a step toward the free end direction so as to gradually reduce the outer diameter. Guide part 4
6, a step portion between the first step portion 46a and the second step portion 46b, and a step portion between the second step portion 46b and the third step portion 46c, respectively, are inclined portions which are gradually inclined toward the free end. 46
d is formed.

As shown in FIG. 1, the lock member 40 is always inserted into the guide portion 46 (see FIG. 2) by inserting the spring 49 into the insertion portion 11 of the rear case 10 so that the battery storage portion 14 It is mounted in a state of being biased to the side.
At this time, the lock member 40 is at the tip of the guide portion 46, that is,
Since the three-step portion 46c is formed thin, it can be easily inserted into the guide hole 11a of the rear case 10, and the production efficiency can be improved. Also, a one-step portion 46 formed on the guide portion 46
The outer diameter of “a” is formed slightly larger than the inner diameter of the spring 49. Accordingly, as shown in FIG. 3, the spring 49 is press-fitted into the one-step portion 46a, the two have the same central axis, and are fixed so as not to be inclined at the position of the third-step portion 46c. Further, the lock member 40 is provided with the engaging portion 11b of the rear case 10 similarly to the prior art shown in FIG.
, And the projection by the bias of the spring 49 is stopped at a predetermined position. As a result, the lock member 40 is supported in a state where the claw portion 42 is projected from one end of the battery housing portion 14 as shown in FIG.

When mounting the battery pack 30 according to the embodiment in which the battery pack attaching / detaching structure according to the present invention thus formed is applied to a portable telephone, first, FIG.
As shown in (2), the projection 33 of the battery pack 30 is engaged with the recess 13 provided in the battery storage section 14 of the rear case 20. Then, the battery pack 30 is moved downward in the direction of the arrow shown in FIG.
Store in 4. At this time, the battery pack 30 slides the lock member 40 in the direction opposite to the biasing direction of the spring 49 by contacting the one end on the locking portion 34 side with the claw portion 42 of the lock member 40. Here, as shown in FIG. 5, the lock member 40 slides in a state where the second step 46b and the third step 46c of the guide section 46 are almost out of contact with the spring 49. Can work.

As shown in FIG. 6, the lock member 40 slides in the direction in which the spring 49 is compressed by the battery pack 30, and the tip of the claw portion 42 protruding into the battery housing 14 is (The surface on which the locking portion 34 shown in FIG. 6 is formed). At the same time, the guide portion 46 of the lock member 40 is moved toward the guide hole 11a of the insertion portion 11 as shown in FIG.
It is inserted up to the position of b. At this time, since the first step 46a and the second step 46b hardly contact the inner periphery of the spring 49 supported by the third step 46c, the guide hole 46
1a can be slid favorably. Also,
Since the guide hole 11a is wider than the outer diameter of the two-step portion 46b, the guide hole 11a is not caught by the frictional force as in the related art shown in FIGS. Therefore, the lock member 40 is connected to the rear case 10.
The sliding operation can be satisfactorily performed by the insertion portion 11 (see FIG. 1). Then, when the battery pack 30 is housed by applying a pressing force to the battery housing 14, the claws 42 of the lock member 40 are fitted into the locking portions 34 of the battery pack 30 as shown in FIG. Is locked to the battery storage unit 14. Thus, the battery pack 30 is supported by the protrusions 33 and the locking portions 34 being locked by the recesses 13 and the lock members 40.

As described above, according to the embodiment in which the battery pack attaching / detaching structure according to the present invention is employed in a portable telephone, as shown in FIG. 3, the outer diameter of the guide portion 46 is formed in three stages. Since the inclined portion 46d is formed at each stage, the spring 49 can be easily attached to the guide portion 46. Further, as shown in FIG. 3, the lock member 40 has a three-step portion 46c having a large outer diameter and
Is press-fitted and fixed, so that it is possible to prevent the spring 49 from dropping in the assembling process and deteriorating workability. In addition, since the outer diameter of the first step portion 46a is formed to be large and the spring 49 is press-fitted and fixed as described above, the spring 49 does not incline, so that the guide hole 11a of the insertion portion 11 shown in FIG. The guide portion 46 can be easily inserted. Further, as shown in FIG. 7, since the guide hole 11a is opened widely with respect to the outer diameter of the two-step portion 46b, the sliding operation of the lock member 40 can be performed well. Furthermore, since the first step 46a is formed to be thinner than the second step 46b, it can be easily inserted into the guide hole 11a.

Here, in the present embodiment, as shown in FIG. 3, an inclined surface 46 inclined between the steps of the guide portion 46 is provided.
Although the embodiment in which d is formed has been described, the present invention is not limited to this. For example, as shown in FIG. 9, a curved surface 46e may be formed by forming an inclined surface into a spherical shape. In this manner, by providing the curved surface 46e on the guide portion 46, the spring 49 can be easily mounted on the guide portion 46, similarly to the inclined surface 46d shown in FIG.

Further, in the present embodiment, the embodiment in which the guide portions 46 are formed in three steps as shown in FIG. 3 has been described. However, the present invention is not limited to this.
As shown in FIG. 10A, the number of stages is two, or FIG.
It may be formed in four steps as shown in FIG. Further, apart from the guide portion forming the step, the shape of the guide portion is changed as shown in FIG.
As shown in (c), it may be formed so as to extend with a conical taper from a cylindrical predetermined position toward the tip. According to the guide portion formed in such a shape, the same effect as that of the guide portion 46 shown in FIG. 3 can be obtained.

Further, in the present embodiment, as shown in FIG. 3, the embodiment in which the outer diameter of the three-step portion 46c formed in the guide portion 46 is made large and the spring 49 is fixed has been described. The invention is not limited to this. For example, FIG.
As shown in FIG. 7, a plurality of ribs 46f formed in a slender shape in parallel with the extending direction may be provided on the outer circumference where the three-step portion 46c of the guide portion 46 extends, and the spring 49 may be press-fitted and fixed. As shown in FIG. 12, the ribs 46f are integrally formed so as to protrude at four locations on the outer periphery of the three-step portion 46c. Further, the number of the ribs 46f is not limited to four provided on the outer periphery of the three-step portion 46c. For example, as shown in FIG. Can be. Accordingly, by providing the rib 46f on the guide portion 46 and fixing the spring 49 in this manner, the spring 49 is fixed and the center axis is made coincident to suppress the inclination, as in the guide portion 46 shown in FIG. In addition, it is possible to prevent the spring 49 from dropping from the guide portion 46 in the assembling step, thereby preventing the workability from being deteriorated.

Here, the rib 46f is not limited to being formed in an elongated shape on the outer periphery where the three-step portion 46c extends in parallel with the extending direction. For example, as shown in FIG. The rib 46g formed as shown in FIG. 15 or the rib 46h formed spirally as shown in FIG. 15 may be formed so as to protrude from the outer periphery of the three-step portion 46c. By forming either the rib 46g or the rib 46h on the three-step portion 46c in this manner, the spring 49 can be fixed more effectively than the rib 46f shown in FIG.

Although the embodiment in which the battery pack attaching / detaching structure according to the present invention is applied to a portable telephone has been described in detail, the present invention is not limited to the above-described embodiment and does not depart from the gist of the present invention. Can be changed within the range.
Although the embodiment in which the battery pack attaching / detaching structure according to the present invention is applied to a mobile phone has been described, the present invention is not limited to this, and can be applied to electronic devices such as a PHS phone and a notebook personal computer.

[0034]

As described above, according to the battery pack attaching / detaching structure of the present invention, since the guide portion of the lock member is formed so that the outer diameter becomes smaller toward the distal end, the spring can be easily attached to the guide portion. In addition, the spring can be inserted from the front end, and the spring can be fixed to the center axis by the thick guide portion on one end side while suppressing the inclination, and the lock member can be easily attached to the case of the electronic device. Also,
According to the battery pack attachment / detachment structure of the present invention, as described above, the guide portion of the lock member is formed so that the outer diameter decreases toward the distal end, so that the spring is interposed in the guide hole of the electronic device case. The sliding operation can be satisfactorily executed without the inserted guide portion coming into contact with the spring.

[Brief description of the drawings]

FIG. 1 is a configuration diagram showing an embodiment in which a battery pack attaching / detaching structure according to the present invention is applied to a mobile phone.

FIG. 2 is a front view showing the lock member and the spring as viewed from the direction of arrow A shown in FIG. 1;

FIG. 3 is an enlarged view showing details of a guide unit shown in FIG. 2;

FIG. 4 is a cross-sectional view showing a state before the battery pack is mounted on the rear case in the BB cross section shown in FIG. 1;

FIG. 5 is an enlarged view showing details of a guide unit shown in FIG. 4;

6 is a sectional view showing a state where the battery pack shown in FIG. 4 is mounted on a rear case.

FIG. 7 is an enlarged view showing details of a guide unit shown in FIG. 6;

FIG. 8 is a sectional view showing a state where the battery pack shown in FIG. 4 is mounted on a rear case.

FIG. 9 is a view showing another embodiment of the lock member in which the inclined portion of the guide portion shown in FIG. 3 is formed in a spherical shape.

FIG. 10 is a view showing another embodiment of the guide section shown in FIG. 3;

FIG. 11 is a view showing still another embodiment of a guide section in which a rib for fixing a spring is formed on the guide section shown in FIG. 3;

12 is a sectional view showing a section taken along line CC shown in FIG. 11;

FIG. 13 is a diagram showing an embodiment in which only one rib shown in FIG. 12 is provided.

FIG. 14 is a view showing another embodiment of the rib shown in FIG. 11;

FIG. 15 is a view showing still another embodiment of the rib shown in FIG. 11;

FIG. 16 is a configuration diagram showing a detachable structure of a conventional battery pack employed in a mobile phone.

FIG. 17 is a front view showing the lock member and the spring as viewed from the direction of arrow D shown in FIG. 16;

FIG. 18 is a front view showing the rear case as viewed from the direction of arrow E shown in FIG. 16;

FIG. 19 is a diagram showing an operation of mounting the battery pack on the rear case in the cross section FF shown in FIG. 16;

FIG. 20 is a view showing a state in which a spring mounted on the lock member shown in FIG. 16 is inclined.

FIG. 21 is a view showing a state where a spring is inclined when the lock member shown in FIG. 16 is mounted.

FIG. 22 is a view showing another embodiment of the lock member shown in FIG. 21;

FIG. 23 is a view showing still another embodiment of the lock member shown in FIG. 21;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Rear case 11 Insertion part 11a Guide hole 11b Engagement part 12 Opening hole 13 Depression 14 Battery storage part 20 Front case 21 Printed circuit board 22 Connection terminal 30 Battery pack 32 Terminal 33 Projection part 34 Lock part 40 Lock member 42 Lock part 44 Engagement Mating claw 46 Guide part 46a One step part 46b Two step part 46c Three step part 46d Inclined part 49 Spring

Claims (7)

[Claims] 1. A case of an electronic device having a concave battery storage portion for detachably holding a battery pack on a predetermined surface, and a printed circuit board disposed in the case by being stored in the battery storage portion of the case. A battery pack that is electrically connected and supplies electricity; and a guide portion that is provided with an elastic member mounted thereon and guides the one end extending in a rod shape into the case to slide and guide the sliding member. A lock member that protrudes from the battery storage portion by force and engages with a predetermined surface of the battery pack to lock the battery member. The guide portion of the lock member extends in a free end direction extending in a rod shape. A battery pack mounting / removing structure, characterized in that the battery pack has either a step or a taper so as to have a smaller outer diameter. 2. The attachment / detachment structure for a battery pack according to claim 1, wherein the guide portion has at least two or more steps toward the free end direction extending in the shape of a bar, and has a smaller outer diameter. And the step is formed with either an inclined surface or a curved surface so as to gradually narrow toward the free end direction. 3. The detachable structure for a battery pack according to claim 1, wherein the guide portion extends from the lock member in a cylindrical shape and extends in a rod shape at a predetermined position, and has an outer diameter in a free end direction. A battery pack attachment / detachment structure characterized in that the battery pack is formed in a tapered shape so as to become thinner toward the battery pack. 4. The battery pack attaching / detaching structure according to claim 1, wherein the guide portion is inserted into the coil-shaped elastic member, protrudes from an outer periphery of the insertion end, and press-fits and fixes the elastic member. A detachable structure for a battery pack, wherein ribs are provided. 5. The battery pack attaching / detaching structure according to claim 4, wherein the rib is formed to be elongated in parallel with an extending direction of the guide portion by projecting to an outer periphery where the guide portion extends in a rod shape. A battery pack attachment / detachment structure comprising at least one battery pack. 6. The battery pack attaching / detaching structure according to claim 4, wherein the rib is provided so as to protrude in a substantially annular or spiral shape on an outer periphery where the guide portion extends in a rod shape. A battery pack attaching / detaching structure, characterized in that: 7. The battery pack attachment / detachment structure according to claim 1, wherein the case of the electronic device is a case of an electronic device such as a PHS telephone, a mobile phone, and a notebook personal computer for carrying. Battery pack attachment / detachment structure.