JPH0644188U - Cover lock structure for electronic devices - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide a cover lock structure for an electronic device in which the upper cover can be locked independently on the housing side. In an electronic device in which an electronic device 21 is housed in a housing 1, a structure for locking an upper cover 3 which is attached to an upper end of the housing 1 so as to be openable and closable and is always biased in an opening direction. Therefore, the lock pins 10a and 10b supported by the side plate of the housing 1, and the lock pins 10a and 10b
The lock levers 11a and 11b, which are attached to the upper cover 3 side in correspondence with the above, and are formed with a tapered surface 12 that can engage with the lock pins 10a and 10b and a locking groove 13 that can fit into the lock pins 10a and 10b. A rotary shaft 16 axially supported by the upper cover 3 along the width direction of the housing 1, a biasing member 17 for biasing the lock levers 11a and 11b in a predetermined direction via the rotary shaft 16, and a rotary shaft. A cover lock structure for an electronic device, which includes a restriction member 18 that restricts a rotation direction of 16.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an electronic device in which an electronic device is housed in a housing, and more particularly to a structure for locking an upper cover openably and closably attached to the upper end of the housing.

[0002]

[Prior art]

 FIG. 12 is a perspective view showing the entire device. In the figure, reference numeral 51 denotes a housing, and a fixed cover 52 and an upper cover 53 are attached to the upper end of the housing 51. Of these, the fixed cover 52 is fixed to the housing 51 with a screw or the like, and one upper cover 53 is attached to the fixed cover 52 so as to be openable and closable. Arms 54 are attached to both sides of the upper cover 53, and the upper cover 53 is always biased in the opening direction by the pulling force of the spring 55 hooked at one end of the arm 54. Further, the front surface of the housing 51 is opened so that the electronic device 56 can be taken in and out, and a front cover (not shown) can be attached to this opening portion.

Conventionally, as a cover lock structure for an electronic device having such a basic structure, there is one as shown in FIG. First, two lock pins 57 are provided at a predetermined interval and at substantially the same height on the side of the housing 51 in which the electronic device 51 is housed. Corresponding to this, a lock lever 58 is rotatably attached to the upper cover 53 side, and each lock lever 58 is biased in one direction by a spring 59. A slide plate 60 is provided along the front surface of the upper cover 53, and the slide plate 60 is engaged with the support fitting 61 through a long hole (not shown) in a slide manner. In addition, an engaging pin 60a is provided on one side of the slide plate 60, and the central portions of the lock levers 58 are engaged with both ends of the slide plate 60, respectively. A spring 62 is hooked on one end of the slide plate 60, and the pulling force of the spring 62 urges the slide plate 60 in one direction. Here, each lock lever 58 rotates about one end side thereof as a fulcrum in conjunction with the sliding movement of the slide plate 60, and also follows an arc-shaped long hole formed in a portion where the slide plate 60 is engaged. It is also possible to rotate independently.

On the other hand, a handle 63 is provided on the front surface of the electronic device 56, and an operation lever 64 is attached near the handle 63. Link members 65 and 66 are connected to the operating lever 64, and a vertical moving plate 67 is engaged with one of the link members 66. A spring 68 is hooked on the vertical moving plate 67, and the pulling force of the spring 68 constantly urges the vertical moving plate 67 upward. A guide plate 69 is rotatably attached to the upper end of the front surface of the electronic device 56, and one end of the vertical moving plate 67 is engaged with the free end side of the guide plate 69.

In the conventional cover lock structure having the above structure, when the upper cover 53 is locked, the upper cover 53 is closed while the electronic device 56 is housed in the housing 51. Then, the engaging pin 60a of the slide plate 60 first comes into contact with the guide plate 69 attached to the electronic device 56. When the upper cover 53 is further closed, the engaging pin 60a moves downward along the guide plate 69 while being pressed against the guide plate 69 by the urging force of the spring 62, as shown in FIG. As a result, the slide plate 60 moves rightward in the figure against the biasing force of the spring 62, and accordingly, each lock lever 68 rotates counterclockwise.

When the upper cover 53 is further closed from this state, the lock lever 58 abuts the lock pin 57 provided on the housing 51 side this time. Here, a taper surface 58a and a locking groove 58b are formed in each lock lever 58, and the taper surface 58a first contacts the lock pin 57. The taper surface 58a of the lock lever 58 moves while being pressed against the lock pin 57 by the urging force of the spring 59, whereby the lock lever 58 is once pushed back clockwise as shown in FIG. Then, at the moment when the upper cover 53 is completely closed, the locking groove 58b of the lock lever 58 is fitted into the lock pin 57 by the urging force of the spring 59, whereby the upper cover 53 is locked.

On the other hand, when releasing the locked state of the upper cover 53 thus closed, as shown in FIG. 16, while holding the handle 63 provided on the front surface of the electronic device 56, one end of the operation lever 64 is held with the thumb. Push in the direction of the arrow. Then, the link members 65 and 66 are interlocked with each other to pull down the vertical moving plate 67, and accordingly, the guide plate 69 is rotated counterclockwise by pressing the engaging pin 60a.

Further, when the engaging pin 60a is released and moves in this way, as shown in FIG. 17, the slide plate 60 moves leftward in the figure by the pulling force of the spring 62, and the lock lever 58 rotates clockwise. Then, the locking groove 58 b of the lock lever 58 is disengaged from the lock pin 57. As a result, the locked state of the upper cover 53 is released, and the upper cover 53 is opened by the pulling force of the spring 55 (FIG. 12).

[0009]

[Problems to be solved by the device]

 However, in the above-described conventional cover lock structure, the mechanism provided on the electronic device 56 side is used to lock the upper cover 53, so that the lock adjustment cannot be performed by the housing 51 side alone. was there. In addition, since the positional relationship between the upper cover 53 and the electronic device 56 in the left-right direction directly affects how the lock lever 58 is caught by the lock pin 57, it is necessary to strictly control the assembling accuracy of the both and the accuracy of individual parts. Further, in the conventional structure, when the locked state of the upper cover 53 is automatically released in synchronization with the operation of the mechanism provided on the electronic device 56 side, the spring 62 is inevitably locked by the sliding plate 60 and the bias is always applied. In addition to this, in order to lock the upper cover 53, it is necessary to separately attach a spring 59 to each lock lever 58, and as a result, different types of springs are attached everywhere. The springs are attached to each other, and the springs have a structure in which they influence each other. Therefore, when designing the mechanism, not only the individual spring pressure but also the balance of the entire force has to be taken into consideration. An object of the present invention is to provide a cover lock structure in an electronic device that solves the above-mentioned problems.

[0010]

[Means for Solving the Problems]

 The present invention has been made in order to achieve the above-mentioned object, and in an electronic device in which an electronic device is housed in a housing, the electronic equipment is openably and closably attached to the upper end of the housing and always biased in the opening direction. It is a structure for locking the upper cover, and a lock pin supported by the side plate of the housing and a taper surface and a lock pin that are attached to the upper cover side in correspondence with this lock pin and that can be engaged with the lock pin. Lock lever with a locking groove that can be fitted to the lock lever, a rotary shaft that is axially supported by the upper cover along the width direction of the housing, and the lock lever is biased in a predetermined direction via this rotary shaft. And a regulating member that regulates the rotation direction of the rotating shaft.

[0011]

[Action]

 In the cover lock structure of the present invention, the rotation direction of the rotary shaft that is supported along the width direction of the housing is regulated by the regulation member. Further, the lock lever is biased in a predetermined direction by a biasing member via the rotating shaft. Further, when the upper cover is closed to lock it, the tapered surface of the lock lever first engages with the lock pin, and the lock lever acts against the urging force of the urging member together with the rotating shaft. It is rotated in a predetermined direction. When the upper cover is closed further from this state, the lock lever is rotated with the rotating shaft in the opposite direction to the previous direction according to the biasing force of the biasing member, which causes the locking groove of the lock lever to lock. And the upper cover is locked.

[0012]

Embodiments of the present invention will be described in detail below with reference to the drawings. 1 is an assembly view showing an embodiment of a cover lock structure according to the present invention, and FIGS. 2 and 3 are exploded views thereof. In the exploded view of FIG. 2, the fixed cover 2 and the upper cover 3 are shown in a smaller size than the other constituent members, and the reference symbols P1 and P2 indicate the mounting positions on the both covers 2 and 3. Corresponds to the reference signs P1 and P2 indicated by arrows on the other constituent members. In the figure, reference numeral 1 denotes a housing, and a fixed cover 2 and an upper cover 3 are attached to the upper end of the housing 1. Of these, the fixed cover 2 is fixed to the housing 1 with a screw or the like, and the upper cover 3 is attached to the fixed cover 2 so as to be openable and closable. That is, as shown in FIG. 2, arms 4 are respectively screwed to both sides of the upper cover 3, and the rear of each arm 4 is rotated by an arm receiver 5 fixed to the front of the fixed cover 2. It is supported freely. On the other hand, springs 7 are attached to both sides of the fixed cover 2 via plates 6, and one end of this spring 7 is hooked on the rear end of the arm 4. As a result, the upper cover 3 is always urged in the opening direction by the pulling force of the spring 7. The configuration up to this point is basically the same as that of the above-described conventional example.

In such a basic structure, the cover opening / closing structure of this embodiment has the following structure. First, the lock pins 10a and 10b are supported on the side plates of the housing 1 via brackets 8 and 9, respectively. On the other hand, on the upper cover 3 side, lock levers 11a and 11b are attached corresponding to the lock pins 10a and 10b described above. Further, each lock lever 11a, 11b is formed with a taper surface 12 engageable with the lock pin 10a, 10b and a locking groove 13 engageable with the lock pin 10a, 10b.

Further, a bracket 14 is attached to the front portion of the upper cover 3 via the arm 4 described above. Bearing members 15 are screwed to both sides of the bracket 14, and a rotating shaft 16 is axially supported along the width direction of the housing 1 by being inserted into the bearing members 15. A spring 17 (biasing member) is wound around the rotary shaft 16 together with the above-described bearing member 15. One end of the spring 17 is hooked on a regulating member 18 screwed to the rotary shaft 16. There is.

Here, one of the lock levers 11 a and 11 b described above is locked to one end of the rotary shaft 16 by a screw. On the other hand, the other lock lever 11b has one end pivotally supported by the arm 4 and the other end connected to the rotary shaft 16 via the link member 19 and the releasing bracket 20.

In the above structure, the spring 17 wound around the rotary shaft 16 biases the rotary shaft 16 in one direction, that is, in the direction of arrow R (FIG. 2) via the restricting member 18. As a result, the lock levers 11a and 11b are biased in predetermined directions, that is, in the directions of arrows J and K (FIG. 1). Further, in this state, one end of the regulating member 18 is pressed against the bearing member 15, whereby the rotation direction of the rotating shaft 16 is regulated.

Further, in the cover lock structure of the present embodiment, the operation lever 22 for releasing the locked state of the upper cover 3 is attached to the electronic device 21 housed in the housing 1. More specifically, an operation lever 22 is attached to the front surface of the electronic device 21 in proximity to the handle 23. One end of the operating lever 22 is pivotally supported by the electronic device body together with a lever 24 for fixing the electronic device, and the other end is pivotally supported by the lower ends of the upper and lower arms 25. A spring 26 is hooked on one end of the device lock lever 24, and the pulling force of the spring 26 urges the operation lever 22 in one direction. A release lever 27 is pivotally supported on the upper end of the electronic device 21, and one end of the release lever 27 is connected to the upper ends of the upper and lower arms 25. A guide rail 28 is attached to each of opposite side surfaces of the housing 1 and the electronic device 21, and the guide rail 28 allows the electronic device 21 to be smoothly taken in and out.

Next, the operation of the cover lock structure of this embodiment will be described. First, when the electronic device 21 is housed in the housing 1, the upper cover 3 is closed in the direction of the arrow as shown in FIG. 4, and as shown in FIG. 5, the tapered surfaces 12 of the lock levers 11a, 11b. Engage with the lock pins 10a, 10b provided on the housing 1 side. When the upper cover 3 is further closed, a reaction force due to the pressure contact between the taper surface 12 and the lock pins 10a and 10b is applied to the lock levers 11a and 11b. It is rotated together with the rotating shaft 16 in the directions of arrow A and arrow B. Then, when the upper cover 3 is further closed, at the moment when the upper cover 3 is completely closed, as shown in FIG. Rotates in opposite C and D directions, whereby the lock pins 10a and 10b are fitted into the locking grooves 13 of the lock levers 11a and 11b, and the upper cover 3 is locked.

On the other hand, when releasing the locked state of the upper cover 3 thus closed, as shown in FIG. 7, while holding the handle 23 provided on the front surface of the electronic device 21, one end of the operation lever 22 is held with the thumb. Operate to push it up. Then, as shown in FIG. 8, the upper and lower arms 25 move upward, and the release lever 27 connected thereto is rotated in the direction of arrow E. As a result, the tip portion of the release lever 27 comes into contact with the release bracket 20 provided on the upper cover 3 side, and further the release bracket 20 is rotated in the direction of arrow B together with the rotating shaft 16.

When the rotary shaft 16 is rotated in this manner, the lock levers 11a and 11b are also rotated in the directions of arrow F and arrow G as shown in FIG. The locking groove 13 separates from the lock pins 10a and 10b. As a result, the locked state of the upper cover 3 is released, and the upper cover 3 is opened in the arrow direction by the pulling force of the spring 7, as shown in FIG. After the upper cover 3 is opened, the rotating shaft 16 is returned to the original state by the urging force of the spring 17, and accordingly, the lock levers 11a and 11b are also returned to the initial state, that is, the lockable state.

By the way, in the cover lock structure of this embodiment, even if the upper cover 3 is closed while the electronic device 21 is pulled out from the housing 1, the lower end of the releasing bracket 20 is guided as shown in FIG. The upper cover 3 is prevented from being locked by hitting the upper surface of the rail 28. This is to prevent the upper cover 3 from being damaged by the collision of the electronic device 21 when the electronic device 21 is accidentally stored in the housing 1 even though the upper cover 3 is locked. This was taken into consideration.

As described above, in the cover lock structure of the present embodiment, the upper cover 3 can be locked alone by the housing 1 side without using the mechanism on the electronic device 21 side. When the upper cover 3 is locked, the lock levers 11a and 11b are respectively rotated from the front and rear directions of the housing 1 by the rotation operation of the rotary shaft 16 that is supported along the width direction of the housing 1, from the front and rear directions of the housing 1. Since the upper cover 3 is fitted in 10b, the locked state of the upper cover 3 can be reliably maintained even when the upper cover 3 is laterally vibrated or impacted by an external factor. Further, in the mechanism configured to lock the upper cover 3, since one type of spring 17 is wound so as to perform the same function, the spring members exert a mutual influence of force as in the conventional case. There is no match.

[0023]

[Effect of device]

 As described above, according to the cover lock structure of the present invention, the upper cover can be locked alone by the housing side without using the mechanism on the electronic device side. Even if it is not stored, it is possible to adjust the lock independently on the housing side. As a result, the degree to which the lock lever is caught on the lock pin is not affected by the positional relationship between the upper cover and the electronic device, so there is no need to strictly control the assembly accuracy of both and the accuracy of individual parts as in the past. Therefore, reduction of product cost can be expected.

Further, when the upper cover is locked, the structure is such that the lock lever is fitted to the lock pin from the front-rear direction of the housing, so that even if lateral vibration or impact is applied to the upper cover due to an external factor. As a result, the locked state of the upper cover can be reliably maintained, and a lock structure of the upper cover that is much more stable than before is realized.

In addition, in the cover lock structure of the present invention, since one type of spring is wound so as to perform the same function, there is no possibility that the springs exert a mutual influence on each other as in the conventional case. Therefore, the troublesomeness of having to consider the overall force balance when designing the mechanism is eliminated.

[Brief description of drawings]

FIG. 1 is an assembly view showing an embodiment of a cover lock structure according to the present invention.

FIG. 2 is a partial exploded view (1) of FIG.

FIG. 3 is a partial exploded view (2) of FIG.

FIG. 4 is an operation explanatory diagram (1) in the embodiment.

FIG. 5 is an operation explanatory diagram (2) in the embodiment.

FIG. 6 is an operation explanatory diagram (3) in the embodiment.

FIG. 7 is an operation explanatory diagram (4) in the embodiment.

FIG. 8 is an operation explanatory diagram (5) in the embodiment.

FIG. 9 is an operation explanatory diagram (6) in the embodiment.

FIG. 10 is an operation explanatory diagram (7) in the embodiment.

FIG. 11 is an operation explanatory diagram (8) in the embodiment.

FIG. 12 is a perspective view showing the entire device.

FIG. 13 is an assembly diagram showing a conventional structure.

FIG. 14 is an operation explanatory diagram (1) in the conventional example.

FIG. 15 is an operation explanatory diagram (2) of the conventional example.

FIG. 16 is an operation explanatory diagram (3) in the conventional example.

FIG. 17 is an operation explanatory diagram (4) in the conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Housing 3 Upper cover 10a, 10b Lock pin 11a, 11b Lock lever 12 Tapered surface 13 Locking groove 16 Rotating shaft 17 Spring (biasing member) 18 Restricting member 21 Electronic device

Claims (1)

[Scope of utility model registration request] 1. An electronic device in which an electronic device is housed in a housing, which has a structure for locking an upper cover that is openably and closably attached to an upper end of the housing and is always biased in an opening direction. A lock pin supported by a side plate of the housing, a taper surface which is attached to the upper cover side in correspondence with the lock pin and is engageable with the lock pin, and a locking groove fittable with the lock pin A lock lever formed with, a rotation shaft pivotally supported by the upper cover along the width direction of the housing, and a biasing member that biases the lock lever in a predetermined direction via the rotation shaft. A cover lock structure for an electronic device, comprising: a restricting member that restricts a rotation direction of the rotating shaft.