JP6510171B2 - Locking structure of opening and closing part of electronic device case and electronic device provided with the same - Google Patents

Description

  The present invention relates generally to an opening / closing portion lock structure of an electronic device casing and an electronic device including the same, and more particularly, to an opening / closing portion lock structure having a plurality of lock mechanisms and an electronic device including the same.

  Conventionally, a housing of an electronic device using removable parts, such as a battery and a memory card, is provided with an opening / closing part for accessing parts disposed in the housing, such as a battery storage part and a memory card slot. . The opening / closing portion is generally formed as a lid or a cover, and there is a structure in which the whole can be separated or a structure in which a part is fixed to a housing by a hinge or the like.

  Since it is desirable that such an open / close unit is in a closed state except when replacing a detachable part, a lock mechanism for maintaining the closed state is provided, and when the lock mechanism is released, the open / close unit is released (or It is configured to be energized and open automatically.

  However, when an external force is applied to the lock mechanism, the lock mechanism may be released unintentionally. As a result, the open / close unit is opened and the detachable part falls, dust or water infiltrates into the housing from the outside, and the electronic device can not operate normally or breaks down. May be

  For example, in a battery-powered electronic device, if the switch is unintentionally opened during operation and the battery falls or the contact is disconnected, the operation is stopped at that point. In addition, since the waterproofness and dustproofness to be realized by the electronic device are impaired, water or dust intrudes into the inside of the device to cause a failure of the device.

  Therefore, as electronic devices that are required to be waterproof and dustproof, there are known electronic devices in which opening and closing portions may be a major problem in operation due to careless opening, and those having a plurality of locking mechanisms for the opening and closing portions are known. There is.

  In the digital camera described in Non-Patent Document 1, the opening and closing knob and the lock knob are provided in the opening and closing part (cover) for accessing the mounting part of the battery and the memory card, and when the lock knob is in the lock position, the opening and closing Even if the knob is operated, the cover does not open. Also, by making the direction of the force required to bring the lock knob from the lock position to the unlock position orthogonal to the direction of the force for operating the open / close knob, both the lock knob and the open / close knob can It prevents you from moving carelessly.

"Digital Camera TG-2 Instruction Manual", [online], Olympus Imaging Co., Ltd., 2013, [search on January 7, 2014], Internet <URL: https://support.olympus.co.jp/ jp / support / dlc / archive / man_tg2.pdf>

  However, in the configuration described in Non-Patent Document 1, since the movement of the lock knob needs to be performed by the user, there is a possibility of forgetting to move the lock knob to the lock position after closing the open / close unit. If the lock knob is not moved to the lock position, the open / close portion is opened only by the operation of the open / close knob, which causes the same problem as in the case where the lock knob is not provided.

  SUMMARY OF THE INVENTION The present invention has been made in view of the problems of the prior art, and has an object of providing an opening / closing section lock structure of an electronic device casing in which a plurality of lock mechanisms reliably function.

The above object is achieved by a first lock mechanism movable between a first position for keeping the opening and closing part closed and a second position for making the opening and closing part open. A third position that inhibits the lock mechanism from moving from the first position to the second position, and a first position that enables the first lock mechanism to move from the first position to the second position And a second lock mechanism movable between the fourth position and the second position, wherein the second lock mechanism is directed from the fourth position to the third position. Means for urging the second lock mechanism into the fourth position when returning to the first position after the first lock mechanism moves from the first position to the second position. comprising a third biasing means for returning to the position from the first locking mechanism and the second locking mechanism is provided in the opening portion Which is achieved by the opening and closing portion lock structure of the electronic apparatus housing, characterized that you move in different directions with respect to the opening and closing unit.

  With such a configuration, according to the present invention, it is possible to provide the opening / closing section lock structure of the electronic device housing in which the plurality of lock mechanisms function reliably.

FIG. 1 is an external perspective view of a Holter electrocardiograph as an example of an electronic device to which the present invention is applicable. It is an aa cross-section perspective view of opening / closing part 110 vicinity in FIG. FIG. 6 is a perspective view showing a more detailed configuration of the opening / closing unit 110. It is the top view which extracted and showed the opening / closing lever 120, the nail | claw part 121, and the lock lever 130 typically. They are a top view which shows the state of movable parts in case the opening / closing part 110 is in a locked state, a lock release state, and an opening / closing part openable state, and sectional drawing of the lock lever 130 part. It is a figure which shows typically the positional relationship of a movable part in case the opening-and-closing part 110 is in a locked state, a lock release state, and an opening-and-closing part openable state.

  Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the drawings. In the following, an embodiment in which the open / close lock structure of the electronic device case according to the present invention is applied to the case of the Holter electrocardiograph will be described. However, the open / close portion lock structure according to the present invention is any electronic device Applicable to

  FIG. 1 is an external perspective view of a Holter electrocardiograph as an example of an electronic apparatus to which the present invention is applicable. The Holter electrocardiograph 100 according to the present embodiment is driven by an exchangeable battery such as a dry battery, and records electrocardiogram data on a removable memory card. Therefore, the Holter electrocardiograph 100 has an open / close unit 110 for replacing a battery and a memory card.

  The opening / closing portion 110 is a lid rotatably attached at one end thereof to a shaft of the casing body by a bearing portion 140, and can be opened and closed as indicated by an arrow A. The opening / closing unit 110 is provided with an opening / closing lever 120 as a first lock mechanism and a lock lever 130 as a second lock mechanism.

  The open / close lever 120 is movable between the lock position (first position) and the lock release position (second position) shown in FIG. 1 in the direction indicated by the arrow B, and the open / close portion 110 is closed. In the state, it is biased by a spring in the direction of the lock position. The open / close lever 120 maintains the open / close unit 110 in the closed position at the lock position. The opening and closing unit 110 can be opened when the opening and closing lever 120 is in the lock release position.

  The lock lever 130 is movable in the direction indicated by the arrow C between the lock position (third position) and the lock release position (fourth position). When the lock lever 130 is in the lock position, movement of the open / close lever 120 to the lock release position is suppressed, and the lock lever 130 is configured to be movable to the lock release position when the lock lever 130 is in the lock release position.

  Although the details will be described later, the open / close unit 110 of this embodiment moves the open / close lever 120 to the lock release position so that the lock lever 130 automatically returns to the lock position after the open / close unit 110 is opened. Is configured. That is, when the opening and closing unit 110 is to be opened, the lock lever 130 needs to be moved to the lock release position, but it is not necessary to move the lock lever 130 to the lock position after closing the opening and closing unit 110. Therefore, the dual lock mechanism can be reliably operated without the user having to forget to move the lock lever 130 to the lock position.

  FIG. 2 is a cross-sectional perspective view of the vicinity of the opening and closing part 110 in FIG. In FIG. 2, the internal structure of the opening and closing unit 110 is partially visible. The claw portion 121 is a member that moves in the direction of arrow B together with the opening / closing lever 120, and in the state where the opening / closing portion 110 shown in FIG. 2 is closed, the tip portion thereof enters the groove 101 provided in the inner surface of the housing body. Thus, the open / close unit 110 is kept closed. The spring 122 biases the open / close lever 120 and the claw portion 121 in the opposite direction, and the claw portion 121 is moved to the groove 101 side while enabling the claw portion 121 to move independently in the arrow B direction independently of the open / close lever 120. I am energized. By the biasing of the spring 122, when the opening and closing part 110 is closed, the claw part 121 enters the groove 101 and holds the opening and closing part 110 in the closed state.

  As described above, the bearing portion 140 is rotatably attached to the shaft 102 provided in the housing body. The shaft 102 is provided with a torsion spring, and biases the opening / closing portion 110 in the opening direction. Accordingly, when the opening / closing lever 120 is slid in the upper left direction in FIG. 2 and moved to the unlocking position, the claw portion 121 is disengaged from the groove 101 and the opening / closing portion 110 is centered on the shaft 102 by the biasing force of the torsion spring. It turns counterclockwise and becomes open.

  FIG. 3 is a perspective view showing a more detailed configuration of the opening / closing unit 110. As shown in FIG. The left is a view from the top, and the right is a view from the left. FIG. 4 is a top view schematically showing the open / close lever 120, the claw portion 121, and the lock lever 130. As shown in FIGS. 3 and 4, the open / close lever 120 and the lock lever 130 are configured to cooperate with each other inside the open / close unit 110. The configuration of the open / close lever 120 and the claw portion 121 will be described using FIGS. 3 and 4.

  The open / close unit 110 has a configuration in which a cover 110a is attached on a base plate 110b, which is a metal plate, for example, and movable parts such as the open / close lever 120, the claw 121, and the lock lever 130 in an internal space formed by the cover 110a A spring etc. are stored. A packing 110 c is further provided under the base plate 110 b to prevent liquid and dust from invading from the outside through the periphery of the opening and closing portion 110. The packing 110 c, the base plate 110 b and the cover 110 a are fixed by screws 104 and 105. The screws 104 and 105 are also used to fix cylindrical support members 104a and 105a for supporting the lock lever 130 and the open / close lever 120 to the base plate 110b.

  The opening and closing lever 120 has a plate-like base material 120 a provided with a plurality of projections inside the opening and closing part 110. The base 120 a is provided with first and second pairs of projections 123 and 124 for interlocking with the claws 121 and a third pair of projections 125 for interlocking with the lock lever 130. As shown in FIG. 3, a pair of springs 122 is provided between the first protrusion pair 123 and the claw portion 121, and the second protrusion pair 124 existing inside the hole 127 of the claw portion 121 is clawed. It is biased to press the part 121. By the spring 122, the claw portion 121 moves integrally with the opening / closing lever 120 when the opening / closing lever 120 is moved, and when the opening / closing unit 110 is closed, the closing force of the spring 122 is resisted by the force closing the opening / closing unit 110. After being moved upward in the drawing independently of the opening / closing lever 120, it enters the groove 101 of the housing and holds the opening / closing portion 110 in the closed state. The claw 121 is supported by the support member 105a on the side surface of the hole 127, whereby the moving direction is restricted in the vertical direction in the drawing.

  Further, the base material 120a is urged downward in the drawing (in the direction of the lock position) by a spring 126 provided between the fourth pair of projections 150 provided on the inner wall of the cover 110a and the first pair of projections 123. . As a result, in a state in which no external force is applied to the opening / closing lever 120 upward in the drawing, the state in which the claw portion 121 has entered the groove 101 of the housing is maintained.

  The base 130a of the lock lever 130 has a circular hole 134 for receiving the support member 104a, whereby the lock lever 130 is rotatably supported about the support member 104a. The base 130 a is provided with a projection 132 for cooperating with the third projection pair 125 of the opening and closing lever 120. As described later, the projection 132 controls the movable range of the opening / closing lever 120 by changing the position when the lock lever 130 is in the lock position and when the lock lever 130 is in the lock release position. Further, as shown in FIG. 3, the lock lever 130 is biased by a spring 133 in the direction of the lock position shown in FIG. The lock lever 130 has a hollow structure, and a convex portion is provided on the top surface 135 inside. The protrusion and the protrusion 103 provided on the base plate 110b cooperate with each other to hold the lock lever 130 in the unlocking position against the biasing force of the spring 133. This configuration will be described in detail later.

  5A to 5C show the states of movable parts (lock lever 130, opening and closing lever 120, and claws 121) when the opening and closing part 110 is in the locked state, the unlocked state, and the opening and closing part openable state, respectively. And a cross-sectional view of the lock lever 130 portion. Hereinafter, the relationship between the movable parts in each state will be described with reference to FIG. 6 schematically showing the cooperative operation of the lock lever 130 and the open / close lever 120 and the cooperative operation of the lock lever 130 and the base plate 110.

(Locked)
The lock lever 130 is in the locked position. In the locked state, the protrusion 132 of the lock lever 130 is at a position facing one protrusion 125 a of the third protrusion pair of the opening / closing lever 120. The gap between the projection 132 and the projection 125a is configured to be smaller than the distance required to move the opening / closing lever 120 from the locked position to the unlocked position. Therefore, the movement of the opening / closing lever 120 (and the claw portion 121) is limited, and the opening / closing portion 110 does not open carelessly. The smaller the gap between the projection 132 and the projection 125a in the locked state, the more reliably the careless opening state of the opening and closing portion 110 can be prevented, and both are in contact (there is no gap). It may be configured.

  In the locked state, the convex portion 1351 provided on the top surface 135 inside the lock lever 130 and the convex portion 103 of the base plate 110b have the positional relationship shown in the cross sectional view of FIG. 5A and the right view of FIG. is there. In this state, the lock lever 130 is held at the lock position by the biasing force of the spring 133.

(Unlocked state)
The lock lever 130 is moved from the locked state to the unlocked position. In this state, the protrusion 132 is at a position facing the inclined portion 125 d formed on the protrusion 125 a side of the other protrusion 125 c of the third protrusion pair of the opening / closing lever 120. Between the protrusions 125a and 125c forming the third protrusion pair 125 of the opening and closing lever 120, a recess 125b having a shape in which the protrusion 132 of the lock lever 130 is accommodated is provided. Further, the inclined portion 125d, which is a connection portion between the protrusion 125c and the recess 125b, has a more gentle angle than the inclined portion 125e of the connection portion between the protrusion 125a and the recess 125b. In addition, the gap d between the tip of the projection 132 and the bottom of the recess 125b is configured to be equal to or larger than the distance necessary to move the opening / closing lever 120 from the locking position to the unlocking position. Therefore, in the unlocked state, the open / close lever 120 (and the claw portion 121) can be moved to the unlocked position.

  When the lock lever 130 is moved from the locked state to the unlocked state, first, the lock lever 130 is moved from the locked position until the convex portion 1351 abuts on the right side of the convex portion 103 against the biasing force of the spring 133. . Furthermore, when a force larger than the force (> biasing force of the spring 133) necessary for the protrusion 1351 to get over the protrusion 103 is applied, the protrusion 1351 gets over the protrusion 103, and the cross-sectional view of FIG. The lock is released as shown in the left view of FIG. 6 (b). The force required for the convex portion 1351 to move over the leaf spring-like convex portion 103 is larger than the biasing force of the spring 133, so the lock lever 130 is held in the unlocked state. Thus, the convex portions 103 and 1351 function as a holding mechanism for holding the lock lever 130 in the unlocked state.

(Openable state of the opening and closing part)
In the unlocked state, the open / close lever 120 is moved to the unlocked position. In this state, the opening / closing lever 120 and the claw portion 121 are interlocked and moved upward in the drawing (in the direction in which the claw portion 121 is retracted) by an amount larger than the amount by which the claw portion 121 is separated from the groove 101 of the housing. Therefore, the open / close unit 110 can be opened by the biasing force of the torsion spring provided on the shaft 102 of the above-described housing.

  In the unlocked state, when the open / close lever 120 is moved from the lock position to the unlock position, the inclined portion 125 d of the projection 125 c of the open / close lever 120 presses the corner 1321 of the projection 132 of the lock lever 130. 1321 is moved in the direction of the recess 125b along the inclined portion 125d. The upward force for moving the open / close lever 120 to the unlocking position is converted by the inclined portion 125d to a force in the right direction in the drawing, and the protrusion 132 is convexed on the top surface 135 of the lock lever 130 in the process of fitting into the concave portion 125b. The portion 1351 is moved over the convex portion 103 of the base plate 110b (see the cross-sectional view of FIG. 5C).

  Thereafter, when the open / close unit 110 is opened and the external force applied to the open / close lever 120 becomes smaller than the biasing force of the springs 126 and 122 by the user removing the finger from the open / close lever 120, the open / close lever 120 returns to the lock position. At this time, when the recess 125 b moves away from the protrusion 132 and the tip of the protrusion 132 completely separates from the recess 125 b, the lock lever 130 is returned to the lock position by the biasing force of the spring 133.

  Thus, with the open / close unit 110 open, both the lock lever 130 and the open / close lever 120 are automatically returned to the lock position. After that, when the opening and closing part 110 is closed, the tip of the claw part 121 is inclined (see the right view in FIG. 3). When it is lowered to a position opposite to the groove 101 of the housing, the groove 101 enters the groove 101 by the biasing force of the spring 122. It is not necessary to operate the open / close lever 120 and the lock lever 130 in the process of closing the open / close unit 110, and it is sufficient to push the open / close unit 110 until the claws 121 enter the groove 101 of the housing. Since the lock lever 130 has already returned to the lock position, the lock lever 130 reliably functions without the user's forgetting to lock.

  As described above, according to the present embodiment, in the opening / closing portion provided with the first lock mechanism and the second lock mechanism for locking and unlocking the first lock mechanism, the user performs the second lock The second lock mechanism is configured to return to the state of locking the first lock mechanism without the need to operate the mechanism. Therefore, the problem that the user forgets to operate the second lock mechanism does not occur, and it is possible to provide the open / close unit lock structure in which the double lock mechanism reliably functions.

  In the above-described embodiment, the opening / closing unit 110 is described as being rotatably attached at one end to the housing body, but the whole opening / closing unit 110 may be configured to be detached from the housing body. . For example, instead of the bearing portion 140, a fixed claw protruding from the opening and closing portion 110 may be provided as the claw portion 121 in the locked state.

  Moreover, although the above-mentioned embodiment demonstrated the case where it was the arrangement | positioning in which the opening / closing lever 120 and the lock lever 130 were located in a line with substantially a straight line, both positional relationship is not limited to this. Any other positional relationship can be adopted as long as the same cooperation as the protrusions 132 and 125 described above is possible. It goes without saying that the contour shapes of the base members 130a and 120a may be changed according to the positional relationship between the opening / closing lever 120 and the lock lever 130 so as to realize the cooperation between the protrusions 132 and 125 described above.

Claims (7)

A first locking mechanism movable between a first position maintaining the opening and closing part closed and a second position opening the opening and closing part;
A third position for suppressing movement of the first lock mechanism from the first position to the second position, and a first lock mechanism from the first position to the second position A lock mechanism of an electronic device casing, comprising: a second lock mechanism movable between a fourth position enabling movement;
Biasing means for biasing the second lock mechanism in a direction from the fourth position to the third position, wherein the first lock mechanism is from the first position to the second position The second lock mechanism from the fourth position to the third position when returning to the first position after moving to the second position ;
Said first locking mechanism and said second locking mechanism is provided in the opening portion, the opening and closing portion lock structure of the electronic apparatus housing, characterized that you move in different directions with respect to the opening portion. A first locking mechanism movable between a first position maintaining the opening and closing part closed and a second position opening the opening and closing part;
  A third position for suppressing movement of the first lock mechanism from the first position to the second position, and a first lock mechanism from the first position to the second position A lock mechanism of an electronic device casing, comprising: a second lock mechanism movable between a fourth position enabling movement;
  Biasing means for biasing the second lock mechanism in a direction from the fourth position to the third position, wherein the first lock mechanism is from the first position to the second position Biasing means for returning the second lock mechanism from the fourth position to the third position when returning to the first position after moving to the second position;
  And a holding mechanism for holding the second lock mechanism in the fourth position, and moving the second lock mechanism held in the fourth position by the holding mechanism to the third position. A lock structure for an opening / closing section of an electronic device casing, wherein a force necessary for the movement is larger than a biasing force by the biasing means. The first locking mechanism has a claw;
The nail portion is
When the first locking mechanism is in the first position, the opening / closing portion is maintained in a closed state by entering a groove provided on the inner surface of the electronic device casing.
The electronic device according to claim 1 or 2 , wherein when the first lock mechanism is in the second position, the opening / closing portion can be opened by being removed from the groove. Opening and closing lock structure of the device case. The second lock mechanism has a protrusion whose position changes between the third position and the fourth position, and the protrusion is the protrusion when the second lock mechanism is in the third position. there according to any one of claims 1 to 3, characterized in that it is configured to reside in a position that prevents movement of the first lock mechanism to the second position from the first position Opening and closing lock structure of the electronic device case. The first lock mechanism is provided with a recess at a position facing the second lock mechanism, the recess being shaped to receive the protrusion, and the second lock mechanism is in the fourth position. by protrusion fits in the recess of the first lock mechanism, according to claim 4, characterized in that to enable said first locking mechanism is moved to said second position from said first position Opening and closing part lock structure of the electronic device case described above. And a holding mechanism for holding the second lock mechanism at the fourth position, and moving the second lock mechanism held at the fourth position by the holding mechanism to the third position. closing portion lock structure of an electronic device housing according to claim 1, the force required, characterized in that it is configured to be larger than the biasing force of the biasing means to. The electronic device provided with the opening-closing part lock structure of the electronic device housing | casing of any one of Claims 1 thru | or 6 .