JP4747993B2 - Lock structure, switchgear and electronic device - Google Patents

Description

  The present invention relates to a lock structure of an open / close member that can be opened / closed with respect to a member to be opened / closed, an open / close device including the lock structure, and an electronic device including the open / close device.

  An electronic device includes a lock device (lock structure) having a main lock means for locking a rotatable opening / closing cover to a cover body in a closed position and an auxiliary locking means for locking the opening / closing cover while applying a pulling force in the closing direction. There is something to prepare. According to this locking device, it is possible to prevent the open / close cover from being tightly tightened (see Patent Document 1).

JP 2000-79739 A

  In the above-described conventional locking device, it is necessary to configure the main locking means and the auxiliary locking means as separate members, which increases the cost and increases the number of attachments. In order to solve such a drawback, there is a locking device that uses the elasticity of the covered body instead of the auxiliary locking means, but there is a risk that the locking ability may be reduced due to the deformation of the covered body due to creep.

  The present invention has been made in view of the above-described problems, and an object of the present invention is to provide a lock structure capable of maintaining the lock capability over a long period of time with a reduced cost, an opening / closing device including the lock structure, and the same An object of the present invention is to provide an electronic device including an opening / closing device.

  To achieve the above object, the lock structure of the present invention is an open / close member lock structure that is openable / closable with respect to the open / close member, and is integrally formed with the open / close member, and the open / close member is in a closed state. A locking member that is locked by being locked to the opening / closing member and a biasing member that biases the locking member only when the opening / closing member presses the locking member are provided. As a result, the urging force of the urging member is not always applied to the lock member, and the lock member is not deformed by creep, so that the lock capability can be maintained for a long time. Furthermore, since the lock member can be formed integrally with the member to be opened and closed, the cost can be reduced.

  The biasing member is characterized in that one end is in contact with the lock member and the member to be opened and closed. Accordingly, it is possible to restore the biasing means with high accuracy and reliably prevent the locking member from creeping, and to prevent the biasing means from coming off the locking member due to the pressing of the locking member. Further, the lock member is characterized in that a convex portion is formed and a concave portion into which the convex portion is fitted is formed in the opening / closing member. Thereby, a lock structure can be made into a simple structure.

  In addition, the lock member has a cantilever structure. Thereby, the lock member can be easily formed integrally with the member to be opened and closed by inserting the slit of the outer shape of the lock member into the member to be opened and closed. The urging member is a coil spring. Thereby, the lock mechanism can be configured at low cost. The convex portion of the lock member is formed in a hemispherical shape. Thereby, at the time of locking and unlocking, the opening / closing member can be smoothly operated along the spherical surface of the convex portion of the locking member.

  In order to achieve the above object, an opening / closing device of the present invention is an opening / closing device provided with an opening / closing member that is openable / closable with respect to a member to be opened / closed. In order to achieve the above object, an electronic apparatus of the present invention is characterized by including the opening / closing device. Accordingly, it is possible to provide an opening / closing device or an electronic device that exhibits the above-described effects.

  Embodiments of the present invention will be described with reference to the drawings. The embodiments described below do not limit the invention according to the claims, and all the combinations of features described in the embodiments are not necessarily essential to the solution means of the invention. Absent.

  FIG. 1 is a perspective view showing the entire external configuration of a recording apparatus that is an electronic apparatus having a lock structure according to an embodiment of the present invention. This recording apparatus is an ink jet printer 100 and has a function capable of recording on, for example, business cards, cards, L / 2L size, postcards, six cuts, and JIS standard A6 size to A4 size cut paper. I have. As shown in FIG. 1, the ink jet printer 100 is entirely covered with a substantially rectangular parallelepiped housing (opening / closing member) 101. The upper opening of the housing 101 is covered with an openable / closable cover 102. The cover 102 is attached so as to be rotatable in the direction of the arrow a shown in the figure around the rotation axis at the rear end. By opening the cover 102, the user can easily perform ink cartridge replacement work, internal mechanism maintenance work, and the like. An operation unit 110 is disposed on the front surface side of the upper surface of the housing 101, a paper feeding unit 120 is disposed on the rear surface side of the upper surface, and the lock structure 10 of the present embodiment is disposed on the front surface side (see FIG. 2 and the like). ) Including the) is disposed.

  The operation unit 110 is provided with a push button type power system and an operation system switch 111. The paper feed unit 120 includes a paper support 122 having both a function of opening and closing a paper feed port 121 that is opened upward in a rectangular shape and a function of supporting one or a plurality of papers to be fed. The paper support 122 is attached so as to be rotatable in the direction of the arrow b shown in the figure around the rotation shaft at the rear end. When the user uses or does not use the inkjet printer 100, the user can open and close the paper support 122 by placing his / her fingers on both sides of the paper support 122, so that the user can easily insert and feed paper. Intrusion of dust into the paper mouth 121 can be prevented.

  The paper discharge unit 130 has a function of opening and closing a paper discharge port 131 that opens in a rectangular shape toward the front, and a function of covering a stacker (not shown) that stacks one or a plurality of paper to be discharged provided inside. A cover stacker (opening / closing member) 132 is also provided. The cover stacker 132 is attached so as to be rotatable in the direction of the arrow c in the figure around the rotation axis at the lower end. A lock structure 10 (see FIG. 2 and the like) is provided to keep the cover stacker 132 closed with the paper discharge port 131. When the user uses or does not use the ink jet printer 100, the user can open and close the cover stacker 132 by placing his / her finger on the top of the cover stacker 132. Intrusion of dust into 131 can be prevented. Further, since the recorded paper is always discharged from the front side, the user can easily take out the paper.

  FIG. 2 is a perspective view of the lock structure 10 viewed from the outside of the housing 101 with the cover stacker 132 opened. FIG. 3 is a perspective view of the lock structure 10 viewed from the inside of the housing 101 with the cover stacker 132 closed. FIGS. 4A and 4B are sectional views of the lock structure 10 in FIG. 3 and its surroundings. The lock structure 10 includes a first locking portion (locking member) 11, a second locking portion (locking member) 12, and a compression coil spring (biasing member) 13.

  As shown in FIGS. 2 and 3, the first locking portion 11 has a slit 11 a in a trough shape on the upper side of the storage portion side surface (hereinafter referred to as the cover stacker storage portion side surface) 101 a of the cover stacker 132 of the housing 101. It is formed in the shape of a tongue piece. Thereby, the 1st latching | locking part 11 can be easily integrally formed by the cover stacker accommodating part side surface 101a. As shown in FIGS. 2 and 4, the first locking portion 11 has one end protruding as a hemispherical protrusion (convex portion) 11b protruding inward from the cover stacker storage portion side surface 101a, and the other end is It is integrated with the cover stacker storage unit side surface 101a. The first locking portion 11 has a cantilever function that bends with the other end side as a fulcrum when an external force perpendicular to the cover stacker storage portion side surface 101a is applied to the protrusion 11b.

  As shown in FIGS. 2 and 4, the second locking portion 12 is located at the upper portion of the side surface 132 a of the cover stacker 132, that is, the position of the protrusion 11 b of the first locking portion 11 when the cover stacker 132 is closed. And are integrally formed at corresponding positions. The second locking portion 12 is formed as a circular hole (concave portion) 12 a in the side surface 132 a of the cover stacker 132. That is, as shown in FIG. 4, the second locking portion 12 is formed as a hole 12 a having a diameter into which the tip of the protrusion 11 b can be fitted so that the first locking portion 11 is not bent. It has been drilled. Such a hole 12a of the second locking portion 12 has the first locking portion 11 in a state of being pressed and bent by the side surface 132a of the cover stacker 132 when the projection 11b of the first locking portion 11 is fitted. Is provided with a function of returning to the original state without bending.

  As shown in FIGS. 3 and 4, one end of the compression coil spring 13 is positioned in the vicinity of the protrusion 11 b of the first locking portion 11, and the other end is provided further outside the cover stacker storage portion side surface 101 a of the housing 101. It is arrange | positioned so that it may be located in the inner wall 101b. That is, as shown in FIG. 4, the compression coil spring 13 has a protruding portion 11c in which a hollow portion on one end side protrudes on the opposite side of the protrusion 11b of the first locking portion 11, and the protruding portion 11c. A convex portion 101ba that is fitted and locked so as to straddle the protruding portion 101aa that protrudes on the inner surface side of the adjacent side surface 101a of the cover stacker storage portion, and the hollow portion on the other end side protrudes from the inner wall 101b. It is inserted and locked. Such a compression coil spring 13 follows and compresses the first locking portion 11 which is pressed and bent by the side surface 132 a of the cover stacker 132, and the projection 11 b of the first locking portion 11 is formed on the second locking portion 12. When it is fitted into the hole 12a or when it is separated from the side surface 132a of the cover stacker 132, until it comes into contact with the inner side surface of the cover stacker storage portion side surface 101a in order to restore the first locking portion 11 to its original unbent state. Has a function to expand.

  The operation of the lock structure 10 having such a configuration will be described. When the user starts to open the cover stacker 132, the edge of the hole 12a of the second locking portion 12 presses the projection 11b on the one end side of the first locking portion 11 along the spherical surface. 11 bends with the other end as a fulcrum. The compression coil spring 13 is pressed against one end of the first locking portion 11 and compressed. Further, when the user opens the cover stacker 132 and the side surface 132a of the cover stacker 132 moves away from the protrusion 11b of the first locking portion 11, the compression coil spring 13 reverses one end side of the first locking portion 11 by the restoring force. Press in the direction. At this time, the compression coil spring 13 is engaged and locked so that the hollow portion on one end side straddles the protruding portion 11c of the first locking portion 11 and the protruding portion 101aa of the cover stacker storage portion side surface 101a. The cover stacker storage unit 101 extends until it contacts the inner surface of the side surface 101a. Therefore, the compression coil spring 13 does not bend the first locking portion 11 in the direction opposite to the previous direction, but only restores the first locking portion 11 to the original state where it is not bent.

  On the other hand, when the user starts to close the cover stacker 132, the side surface 132a of the cover stacker 132 presses the projection 11b on the one end side of the first locking portion 11 along the spherical surface. Bends using the side as a fulcrum. The compression coil spring 13 is pressed against one end of the first locking portion 11 and compressed. Further, when the user closes the cover stacker 132 and the protrusion 11b of the first locking portion 11 reaches the position of the hole 12a of the second locking portion 12, the compression coil spring 13 is moved to one end side of the first locking portion 11 by the restoring force. Is pressed in the opposite direction. At this time, the compression coil spring 13 is engaged and locked so that the hollow portion on one end side straddles the protruding portion 11c of the first locking portion 11 and the protruding portion 101aa of the cover stacker storage portion side surface 101a. The cover stacker storage unit 101 extends until it contacts the inner surface of the side surface 101a. Therefore, the compression coil spring 13 does not bend the first locking portion 11 in the direction opposite to the previous direction, but only restores the first locking portion 11 to the original state where it is not bent.

  As described above, according to the lock structure 10 of the present embodiment, one end side of the first locking portion 11 only when the side surface 132a of the cover stacker 132 presses the protrusion 11b on one end side of the first locking portion 11. Since the compression coil spring 13 for urging is provided, the urging force is not always applied to the first locking portion 11. Therefore, the 1st latching | locking part 11 does not deform | transform by creep, and a locking capability can be maintained over a long term. Since one end of the compression coil spring 13 is in contact with the projecting portion 11c of the first locking portion 11 and the projecting portion 101aa of the side surface 101a of the cover stacker storage portion, the compression coil spring 13 is accurately restored and restored. The creep of the first locking portion 11 can be reliably prevented, and the compression coil spring 13 can be prevented from coming off from the projecting portion 11 c due to the pressing of the first locking portion 11. Further, since the protruding portion 11c of the first locking portion 11 is formed in a hemispherical shape, the side surface 132a of the cover stacker 132 is aligned with the spherical surface of the protruding portion 11c when locked and unlocked. Can be operated smoothly.

  In the above-described embodiment, the first locking portion 11 has a cantilever structure, but may be a both-end support structure or the like as long as the structure can be elastically deformed. The second locking portion 12 may be a recess or the like instead of the hole 12a as long as the projection 11b of the first locking portion 11 can be locked. Although the compression coil spring 13 is used, various springs such as leaf springs and elastic members such as rubber may be used.

  The lock structure can be applied to any structural member other than the opening / closing member that needs to be locked. Further, any electronic device including an opening / closing device can be applied to general electronic devices including a recording device such as a facsimile device, a copy device, and a scanner.

1 is a perspective view illustrating an overall appearance configuration of a recording apparatus that is an electronic apparatus including a lock structure according to an embodiment of the present invention. FIG. 3 is a perspective view of the lock structure of the printer of FIG. 1 as viewed from the outside of the housing with the cover stacker opened. FIG. 2 is a perspective view of the lock structure of the printer of FIG. 1 viewed from the inside of a housing with a cover stacker closed. It is sectional drawing of the lock structure in FIG. 3, and its periphery.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Lock structure, 11 1st latching | locking part, 11a slit, 11b protrusion, 11c protrusion part, 12 2nd latching | locking part, 12a hole, 13 compression coil spring, 100 inkjet printer, 101 housing, 110 operation part, 120 supply Paper section, 130 Paper discharge section, 132 Cover stacker

Claims (6)

An opening / closing member locking structure that can be opened and closed with respect to the member to be opened and closed
A locking member that is integrally formed with the member to be opened and closed, and that is locked to the opening and closing member when the opening and closing member is in a closed state;
A biasing member that biases the lock member only when the opening and closing member presses the lock member ;
One end of the urging member is in contact with the lock member and the member to be opened and closed . The lock structure according to claim 1, wherein the lock member is formed with a convex portion, and a concave portion into which the convex portion is fitted is formed in the opening / closing member. The lock structure according to claim 1, wherein the lock member has a cantilever structure. The lock structure according to claim 1, wherein the biasing member is a coil spring. An opening / closing device including an opening / closing member that can be opened and closed with respect to a member to be opened and closed,
An opening / closing device comprising the lock structure according to any one of claims 1 to 4. An electronic apparatus comprising the switchgear according to claim 5.

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