JP3404122B2 - Battery lock mechanism - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a battery lock mechanism, and is particularly useful when applied to a camera-integrated VTR (hereinafter referred to as a video camera) used with a battery attached.

[0002]

2. Description of the Related Art FIG. 5 is a sectional view of a rear end portion of a video camera provided with a battery lock mechanism according to the prior art. As shown in the figure, a protrusion 41a is formed at the tip (lower end in FIG. 5) of the substantially L-shaped lock member 41, and a spring is provided at the base end (upper end in FIG. 5) of this lock member 41. One end of 44 is joined. The other end of the spring 44 is fixed to a fixed portion 43 integrated with the video camera body 30 (exterior case), and the convex portion 41a of the lock member 41 passes through a hole 30i in the rear end surface 30e of the video camera body 30. Rear end face 30e
This convex portion 41a is biased (in the direction of arrow B) so as to project outward from.

Further, a pressing member 42 is locked to an intermediate portion of the lock member 41 via a locking portion 42b. The pressing member 42 has a pressing surface 42a which is occupied in a hole 30h provided at the end of the rear end surface 30e and exposed to the outside,
When the person presses the pressing surface 42a, the lock member 41 is moved in the arrow A direction against the biasing force of the spring 44.

Therefore, according to the battery lock mechanism having the above structure, when the battery 31 is moved in the direction of arrow D and the recess 31a provided at the bottom of the battery 31 is occupied on the hole 30i, it is locked by the urging force of the spring 44. Member 41
The convex portion 41a is fitted into the concave portion 31a. As a result, the battery 31 is locked and cannot move in the directions of arrows C and D. On the other hand, when the pressing portion 42a of the pressing member 42 is pressed in the arrow A direction with the battery 31 locked in this way, the spring 44 contracts due to this pressing force, and the convex portion 41a moves in the arrow A direction to move the concave portion 31a. Get out of.
As a result, the battery 31 is unlocked and the arrow C,
It is possible to move in the D direction.

[0005]

However, in the battery lock mechanism according to the above-mentioned prior art, the spring 44 is required, which leads to an increase in cost and the spring 4
Since it is necessary to connect 4 to the lock member 41 and the fixing portion 43, it takes much time to assemble. Furthermore, when the pressing surface 42a is pressed and the spring 44 contracts, the pressing surface 42a and the spring 44 are separated in the directions of arrows C and D, so the spring 44
May bend in the direction of arrow D, and the convex portion 41a may not easily move in the direction of arrow A. As a result, it may be difficult to unlock the battery 31.

Therefore, in view of the above-mentioned prior art, it is an object of the present invention to provide a battery lock mechanism which can reduce the number of parts to reduce the number of steps and cost and can surely unlock the lock. To do.

[0007]

According to a first aspect of the present invention which achieves the above object, a convex portion and a spring portion for urging the convex portion so as to be fitted into a concave portion provided at the bottom of the battery,
In battery lock mechanism having a pressing portion for pressing against the spring portion to the urging force, the distal end portion, the middle
It has an intermediate part and a base part, and these are integrally formed by resin.
Has a shaped locking member, the tip of which is a video camera.
The part that occupies in the direction along the rear end face of the main body and this part
And the convex portion integrally formed in the central portion of the
The part passes through the hole in the rear end face and projects outward from the rear end face.
Is inserted into the recess of the battery, and the middle portion is
It is occupying along a direction substantially perpendicular to the tip,
The base end portion has the spring portion, and is substantially
Occupied at a right angle, the spring part is gently curved
And the thickness is adjusted so that it has an appropriate biasing force.
The urging force urges the convex portion, and the spring portion is fixed by the fixing means.

A second structure of the present invention for achieving the above object is the battery lock mechanism according to the first structure, wherein the fixing means is a slit-shaped hole formed in the spring portion.
It is characterized by having another convex portion which is inserted into this hole to lock the spring portion.

[0009]

According to the first aspect of the present invention, the convex portion is fitted into the concave portion of the battery by the urging force of the spring portion formed of resin to lock the battery. On the other hand, when the pressing portion is pressed while the battery is thus locked, the spring portion bends in the pressing direction so that the convex portion moves in the same direction and disengages from the concave portion, resulting in locking of the battery. Is released. Moreover, at this time, since the fixing portion prevents the spring portion from rotating about the convex portion as a fulcrum, the convex portion smoothly moves in the pressing direction. Therefore, the lock of the battery can be surely released. Further, since the spring portion and the convex portion are integrally formed of resin, the number of parts is reduced, and the number of steps and cost are reduced as compared with the conventional case.

According to the second aspect of the present invention, in addition to the operation of the first aspect, the spring portion can be easily fixed by simply inserting another protrusion into the hole of the spring portion. You can
Moreover, since the hole has a slit shape, it is easy to insert the other convex portion.

[0011]

Embodiments of the present invention will now be described in detail with reference to the drawings.

FIG. 1 is a rear perspective view of a video camera equipped with a battery lock mechanism according to an embodiment of the present invention, FIG. 2 is an enlarged sectional view taken along the line II-II of FIG. 1, and FIG. 3 is a lock shown in FIG. It is an arrow view which decomposes | disassembles and shows a member, a pressing member, and a fixed part.

In these figures, 1 is a locking member, 1
a is a convex portion, 1b is a side surface, 1c is a hole, 1d is a spring portion, 1e
Is a convex portion, 1f is a hole, 1g is a side surface, 1h is a groove, 1i is a middle portion, 1j is a distal end portion, 1k is a base end portion, 1m is an end face, 2 is a pressing member, 2a is a pressing surface, and 2b is a lock. Part, 2c is a connecting part,
2d, 2e and 2f are convex portions, 2g are pressing portions, 3 is a fixing portion,
3a is a convex portion, 4 is a guide portion, 4a and 4b are guide surfaces, 4
c is a convex portion, 4d is a contact surface, 30 is a video camera body (outer case), 30a is a camera portion, 30b is a VTR deck portion, 30c is a microphone, 30d is a viewfinder, 30e is a rear end surface, and 30f is a locking portion. , 30g is the inner peripheral surface, 30h, 30
i is a hole, 31 is a battery, and 31a is a recess.

Of these, the lock member 1 is, as shown in FIGS. 2 and 3, a front end portion 1j, an intermediate portion 1i and a base end portion 1k.
And these are integrally formed of resin. As shown in FIG. 2, the tip portion 1j is a portion occupying in a direction along the rear end surface 30e of the video camera body 30 (directions of arrows C and D), and a convex portion 1a integrally formed in the central portion of this portion. And have. The convex portion 1a has a rear end surface 30e.
A recess 31a provided at the bottom of the battery 31 by projecting outward from the rear end surface 30e through the hole 30i (see FIG. 1).
Has been inserted into.

The intermediate portion 1i occupies a direction substantially perpendicular to the front end portion 1j, that is, a direction substantially perpendicular to the rear end surface 30e (directions of arrows A and B), and is located on the left side in FIG. A pair of convex portions 1e provided on the side surface 1g with a predetermined interval.
have. The convex portion 1e includes the intermediate portion 1i shown in FIG.
A hole 1f is provided which penetrates to the side surface 1b on the right side of the center. A pair of coupling portions 2c of the pressing member 2 are inserted into the holes 1f from the convex portion 1e side (see FIG. 3).
An engaging portion 2b provided at the tip of is engaged with the side surface 1b. The convex portion 2f provided on the inner side surface of the coupling portion 2c is in contact with the convex portion 1e, which restricts the movement of the coupling portion 2c in the arrow B direction.

The side surface 1g is a video camera body 30.
2 is in contact with the guide surface 4a on the right side in FIG. Therefore, the intermediate portion 1i has the guide surface 4a.
Are guided to move in the directions of the arrows A and B along. The movement in the direction of the arrow B is limited by the contact surface 4d of the guide portion 4 that contacts the end surface 1h of the intermediate portion 1i as shown in FIG. Further, a groove 1h along the direction of arrows A and B is provided at the tip of the intermediate portion 1i, and the convex portion 4c provided on the contact surface 4d is inserted into the groove 1h. The convex portion 4c prevents the intermediate portion 1i from moving in the direction perpendicular to the paper surface of FIG.

The base end portion 1 has a spring portion 1d and is occupying a direction substantially perpendicular to the intermediate portion 1i, that is, along the directions of arrows C and D. The spring portion 1d is gently curved so as to be convex in the direction of arrow A, and the thickness thereof is adjusted so as to have an appropriate biasing force. By this biasing force, the convex portion 1a of the tip 1j is biased in the direction of arrow B. I am energetic. Further, a slit-shaped hole 1 is provided along the longitudinal direction at the center of the spring portion 1d.
c is provided. The convex portion 3a of the fixed portion 3 formed integrally with the video camera body 30 is inserted into the hole 1c from the side opposite to the convex portion 1a of the tip portion 1j. That is, the spring portion 1d is hooked by the convex portion 3a.

As shown in FIGS. 2 and 3, the pressing member 2 has a substantially L-shaped pressing portion 2g and a connecting portion 2c provided on the inner side surface of the pressing portion 2g. It is integrally formed of resin. The pressing portion 2g is occupied in the hole 30h provided at the left end in FIG. 2 of the rear end surface 30e of the video camera body 30, and the outer surface is exposed to the outside. As described above, the coupling portion 2c has the locking portion 2b provided at the tip and the convex portion 2f provided inside, and is coupled to the lock member 1 by the locking portion 2b and the convex portion 2f. There is.

The pressing portion 2g has a convex portion 2e on a portion of the inner side surface along the arrow A, B direction, and has an outer side arrow A, B.
The projection 2d is provided on the portion along the direction, and the pressing surface 2a is further provided on the portion on the outside surface along the arrow C and D directions. The end surface of the convex portion 2e is the guide surface 4a on the left side of the guide portion 4 in FIG.
Therefore, the pressing portion 2g is guided so as to move in the directions of arrows A and B along the guide surface 4a. Convex part 2
d is opposed to the inner peripheral surface 30g of the hole 30h, and when the pressing portion 2g moves in the direction of arrow A by a predetermined distance, the inner peripheral surface 3
Contact 0g. Therefore, the movement of the pressing portion 2g in the arrow A direction is appropriately limited, and the spring portion 1d is prevented from being excessively bent. The pressing surface 2a is occupying substantially the same plane as the rear end surface 30e because the contact surface 4b of the guide portion 4 restricts the movement of the lock member 1 in the arrow B direction.

Therefore, according to the battery lock mechanism having the above structure, when the bottom portion of the battery 31 is brought into contact with the rear end surface 30e and the convex portion 1a of the lock member 1 is pressed by the bottom portion, this spring force causes the spring portion 1d to move in the direction of arrow A. To Figure 2
At the same time as the middle one-dot chain line bends, the convex portion 1a moves in the same direction as shown by the one-dot chain line in FIG. In this state, when the battery 31 is moved in the direction of arrow D and the concave portion 31a is occupied on the hole 30i, the convex portion 1a moves in the direction of arrow B by the biasing force of the spring portion 1d and is fitted into the concave portion 31a.
As a result, the battery 31 is locked and cannot move in the directions of arrows C and D. At this time, the movement of the battery 31 in the direction of the arrow B is prevented by the groove (not shown) provided at the bottom of the battery 31 being locked by the locking portion 30f.

On the other hand, in the state where the battery 31 is locked in this way, the pressing surface 2a of the pressing member 2 is indicated by the arrow A.
When pressed in this direction, this pressing force causes the spring portion 1d of the lock member 1 to bend in the same direction as indicated by the alternate long and short dash line in FIG.
Along with this, the convex portion 1a moves in the same direction and the battery 3
It comes off from the concave portion 31a of No. 1. As a result, the battery 31 is unlocked and can move in the directions of arrows C and D.

Moreover, at this time, since the pressing surface 2a and the convex portion 1a are separated in the directions of arrows c and d as shown in FIG.
By the pressing force applied to the pressing surface 2a, the spring portion 1d tries to rotate in the arrow D direction with the convex portion 1a as a fulcrum.
This rotation is restrained by the convex portion 3a of the fixed portion 3 which locks the spring portion 1d. Therefore, the convex portion 3a smoothly moves in the direction of the arrow A in the hole 30i, so that the battery 31 can be reliably unlocked. The guide portion 4 also causes the convex portion 1a to move smoothly in the directions of arrows A and B.

Further, in place of the conventional spring 44 (see FIG. 5), a spring portion 1d formed integrally with resin by the convex portion 1a.
Therefore, the number of parts is reduced, and the man-hour and cost are reduced as compared with the related art.

Further, the spring portion 1d can be easily fixed only by inserting the convex portion 3a of the fixing portion 3 into the hole 1c of the spring portion 1d, and since the hole 1c has a slit shape, the convex portion 3a can be inserted. Is easy. Although such a structure is desirable for fixing the spring portion 1d, the structure is not necessarily limited to this, and is shown, for example, in FIGS. 4A and 4B (only the main part is shown. Structures of other parts) Is the same as the above embodiment). That is, as shown in FIG. 4A, the spring 11d of the lock member 11 has a circular hole 11d.
c is provided, and the convex portion 13 provided on the fixing portion 13 is provided in the hole 11c.
a is inserted. Further, in the structure shown in FIG. 4B, a convex portion 21e having a hole 21c is provided at the base end of the spring portion 21d of the lock member 21, and the convex portion 21e is fixed to the screw 23a.
It is fixed to the fixed portion 23 by.

[0025]

As described above in detail with the embodiments, according to the present invention, since the spring portion and the convex portion are integrally formed of resin, the number of parts can be reduced as compared with the prior art. It is possible to reduce man-hours and costs. Moreover, since the fixing means can prevent the spring portion from rotating and the convex portion can be smoothly moved, the battery can be reliably unlocked.

Further, since the fixing means has a slit-shaped hole formed in the spring portion and another convex portion which is inserted into the hole and hooks the spring portion, the other portion is provided in the hole. It is possible to easily fix the spring portion just by inserting the convex portion, and since the hole has a slit shape, the other convex portion can be easily inserted.

[Brief description of drawings]

FIG. 1 is a rear perspective view of a video camera including a battery lock mechanism according to an embodiment of the present invention.

FIG. 2 is an enlarged cross-sectional view taken along the line II-II of FIG.

FIG. 3 is an exploded perspective view of a lock member, a pressing member, and a fixing portion shown in FIG.

FIG. 4A is a perspective view showing a main part of another embodiment,
FIG. 6B is a plan view showing a main part of another embodiment.

FIG. 5 is a cross-sectional view of a rear end portion of a video camera including a battery lock mechanism according to the related art.

[Explanation of symbols]

1,11,21 Lock member 1a convex part 1b side 1c hole 1d spring part 1e convex part 1f hole 1g side 1h groove 1i middle part 1h tip 1k base end 1m end face 2 Pressing member 2a Pressing surface 2b Locking part 2c joint 2d, 2e, 2f convex part 2g pressing part 3 Fixed part 3a convex part 4 Guide section 4a, 4b guide surface 4c convex part 4d contact surface 30 Video camera body 30e rear end face 30h, 30i holes

Claims (2)

(57) [Claims] 1. A convex portion, a spring portion for urging the convex portion to be fitted into a concave portion provided at the bottom of the battery, and a pressing portion for pressing the spring portion against the urging force. The battery lock mechanism has a front end portion, an intermediate portion, and a base end portion, which are made of resin.
Has a locking member integrally formed with the front end portion,
The part that occupies the direction along the rear edge of the video camera body
And the convex portion integrally formed in the central portion of this portion
This convex portion passes through the hole on the rear end surface and is from the rear end surface.
Protruding outward and fitted in the recess of the battery,
The middle portion is occluded along a direction substantially perpendicular to the tip.
Position, the base end portion has the spring portion, and the intermediate portion
The spring portion is occupying in a direction substantially perpendicular to the
It is gently curved and thick so that it has an appropriate biasing force.
Is adjusted, and the urging force urges the convex portion.
Cage, battery lock mechanism, characterized in that fixed the spring portion by fixing means. 2. The battery lock mechanism according to claim 1, wherein the fixing means includes a slit-shaped hole formed in the spring portion and another convex portion which is inserted into the hole and locks the spring portion. A battery lock mechanism characterized by having.