JPH0132785Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a case connecting device for closely connecting two box-like cases.

When connecting the box cases of wireless mobile business equipment, it is desired that the box cases can be tightly connected to prevent leakage of magnetic fields and electric fields. Conventional methods for tightly connecting the box cases of devices have been to use machine screws or snap locks. However, the method of fastening with small screws takes too much time to attach and remove the screws, and is not suitable for connecting cases of wireless mobile business equipment that must be attached and detached in a short time. There is a problem in that the lock protrudes to the outside of the device case, making it impossible to maintain a flat outer surface after connection. Still another method of connection is to provide a small hole in one case and a spring pin that can fit into the hole in the other case, and to connect by the pressing force of the spring. Although this method has excellent connection operability, it has the disadvantage that it is easy to cause looseness in the connection portion, cannot maintain the accuracy required for a tight connection, and is mechanically weak.

As described above, conventional case connection devices that can be tightly connected are time-consuming to use, and those that can be easily attached and detached generally have poor connection reliability and cannot provide a close connection.

SUMMARY OF THE INVENTION An object of the present invention is to provide a close connection device for equipment cases that eliminates the above-mentioned drawbacks, maintains accuracy and strength during connection, and has excellent operability.

In this invention, a connecting pin with a locking head is installed on the connecting surface of one of the cases to be connected, and a rotating metal fitting is supported on the connecting surface of the other case so as to be rotatable within the connecting surface. The rotating metal fitting is integrally formed with an insertion hole into which the connecting pin can be inserted and a locking elongated hole with a smaller diameter than this insertion hole, and after the connecting pin is inserted into the insertion hole of the rotating metal fitting, the rotating metal fitting can be rotated. This is characterized in that the two cases are closely connected by allowing the connecting pin to enter the locking elongated hole.

The present invention will be described in detail below with reference to the drawings.
1 is a perspective view showing the external appearance of cases 1 and 2 to be connected, FIG. 2A is a front view showing the connecting surface of case 1, and FIG. 2B is a bottom view of case 1. A fixing fitting 4 is integrally formed with the housing 3 on the connecting surface of the case 1, a shaft 5 is installed in the center of the fixing fitting 4, and a rotary fitting 6 is mounted on the shaft 5 to rotate within the connecting surface. Support freely. Furthermore, two pins 7 are implanted in the fixing metal fitting 4 at symmetrical positions with respect to the axis 5, and an arc-shaped long hole 8 into which the two pins 7 are inserted is formed in the rotating metal fitting 6. do. These two pins 7
serves as a stopper for the rotation of the rotating metal fitting 6, and the rotation angle of the rotating metal fitting 6 is regulated by the pin 7 and the elongated hole 8. Further, the heads of two connecting pins 9 implanted in the connecting surface of the other case 2 can be fitted into the fixing metal fitting 4 during connection.
Two circular positioning holes 10 are formed. The rotary fitting 6 has two circular insertion holes 11a into which the heads of the connecting pins 9 can be inserted at positions corresponding to the two positioning holes 10, and a rotation shaft 5 communicating with the circular insertion holes 11a. A narrow groove-shaped locking hole 11b extending circumferentially around the center is formed. The side of the peripheral portion of the locking hole 11b facing the fixing metal fitting 4 is configured so that its thickness gradually increases as it moves away from the circular insertion hole 11a. Furthermore, the lower end of the rotary fitting 6 is made to protrude outward from the housing 1, and a pin 12 is provided on this protrusion. A pick-up 13 is attached to the pin 12 so as to be slidable along the axial direction of the pin, thereby forming an operating lever.
A groove 13a extending in the sliding direction is formed in the groove 13, and a knock pin 14 that engages with the groove 13a is implanted in the pin 12, and the groove 13 is inserted into the pin 1.
A spring 15 is inserted so as to press the spring 15 toward the tip. Correspondingly, the housing 3 is formed with an L-shaped notch 16 having a groove 16a. With this configuration, the pressing force of the spring 15 causes the groove 16a of the notch of the housing to
When the rotary fitting 6 and the lens 13 are engaged with each other, the rotary fitting 6 is locked, and the operating lever is housed within the surface of the housing, resulting in a flat connecting surface.

FIG. 3 is an end view showing the configuration of the connecting portion of the case 2. FIG. Two connecting pins 9 are implanted in the connecting portion of the case 2 and protrude perpendicularly to the connecting surface. As this connecting pin 9, a countersunk screw having a locking head shaped like a countersunk is used.

Next, the operation of connecting cases 1 and 2 will be explained with reference to FIGS. 4A and 4B.

4A and 4B are sectional views taken along the line -- in FIG. 2.

During the connection operation, the operating lever is rotated to align the circular insertion hole 11a of the rotary fitting 6 with the positioning hole 10 of the fixed fitting 3. This position will be referred to as the release position below. After setting the rotary fitting 6 to the release position, cases 1 and 2 are placed on top of each other, and case 2 is pushed into case 1. The heads of the connecting pins 9 pass through the circular insertion holes 11a of the rotating metal fittings 6 and engage with the positioning holes 10 of the fixing metal fittings 4, so that the two connecting pins 9 are positioned and fixed. As a result, the connection position of cases 1 and 2 is fixed. Further, the tapered portion 9a of the connecting pin 9 is at a position where it engages with the hole 11 of the rotary fitting 6. Next, when the lever is rotated toward the lock position and the rotating metal fitting is rotated, the tapered portion 9a of the connecting pin 9 comes to engage with the locking elongated hole 11b of the rotating metal fitting 6. Since a tapered surface is formed on the periphery of this elongated locking hole 11b so that it approaches the case 1 side as it advances to the lock position, the connecting pin 9 gradually moves toward the case 1 side as the rotary fitting 6 rotates. The space between the cases 1 and 2 is narrowed, and the cases 1 and 2 are completely crimped together in the locked position. In this locked position, the lever 13 for operation is locked by the spring 1.
5 engages with the groove 15a of the L-shaped notch 15 formed in the case 1, and the rotating metal fitting 6 is maintained in a locked state.

FIG. 5 is a sectional view showing two examples of how to connect the case 1 and the periphery of the housing. Figure 5A
If the tips of the housings 3 and 17 of the two cases are made into a recessed structure as shown in
Since the housing 17 is pushed into the case 1, it comes into perfect contact with the housing 17. Further, as shown in FIG. 5B, a recess is formed at the tip of the housing 3' of case 1, and the gasket 18 is attached therein. By forming a convex portion that can be engaged, the adhesion is further improved and airtight and watertight functions can be provided. However, in this case, it is necessary to take measures such as covering the notch 16 formed on the side surface of the case 1 from the inside and pressing the portion of the rotary fitting 6 that protrudes to the outside with a gasket.

6A to 6C show modified examples of the connecting portion, FIG. 6A is a plan view showing the shape of the locking hole drilled in the rotary fitting 6', and FIG. 6B is a plan view of the locking hole when connected. 6A is a sectional view taken along the - line, and FIG. 6C is a sectional view taken along the - line of FIG. 6A. The groove width of the locking elongated hole 11b' of the rotary fitting 6' is configured to gradually become narrower as the insertion hole 11a' moves away from the insertion hole 11a'.
Furthermore, a connecting pin 9 is provided at the edge of the locking elongated hole 11b'.
The tapered surface is formed so as to be able to engage with the tapered surface 9a of. With this structure, the connecting pin 9 gradually moves into the locking elongated hole 11 as the rotary fitting 6' rotates.
As b' comes to engage with the narrowed end portion, the connecting pin 9 is drawn toward the case 1, and the cases 1 and 2 are almost completely tightly connected. In particular, since the connecting pin and the rotating metal fitting are engaged with each other on the tapered surfaces, the connecting operation can be performed more smoothly.

As explained above, according to the present invention, it is possible to perform a highly accurate close connection with a simple configuration, and it is also possible to maintain watertightness and airtightness as necessary. Furthermore, since it has high operability and can be attached and detached in a short time, it can be highly effective when used in equipment cases that are frequently attached and detached.

The present invention is not limited to the embodiments described above, but can be modified in many ways. For example, the number of connecting pins is not limited to two; one may be sufficient for small cases, and three or more connecting pins can be used to increase reliability when connecting large cases. Tight connections can be made. Also,
The same function can be achieved by forming a recess in the housing of the case instead of forming a notch in the housing. Furthermore, as the configuration of the operating lever, the lever is attached to one end of the rotating metal fitting via a joint that can be bent at right angles.
To rotate the rotating metal fitting, you can raise the lever and place your finger on it to rotate the lever.

[Brief explanation of the drawing]

Fig. 1 is a perspective view showing the external appearance of two cases to be connected by the connecting device according to the present invention, Fig. 2 A is an end view showing one connecting surface of the connecting device according to the present invention, and Fig. 2 B is a side view thereof, FIG. 3 is an end view showing the other connection surface to be connected, and FIGS. 4A and B.
is a cross-sectional view taken along the line -- in FIG. 1 showing the configuration of the connecting portion;
FIG. 5 is a sectional view showing the structure of the connecting portion of the housing. FIG. 6A is a plan view showing the shape of a rotary fitting according to another embodiment of the present invention, FIG. 6B is a cross-sectional view taken along the line -- in FIG. 6A, and FIG. 6C is a cross-sectional view taken along the line -- in FIG. 6A. It is a diagram. 1, 2... Case, 3, 3', 17, 17'...
Housing, 4...Fixing bracket, 5...Shaft, 6...
Rotating metal fitting, 9...Connection pin, 11a...Insertion hole,
11b... Long hole for locking.

Claims (1)

[Claims for Utility Model Registration] 1. A connecting pin with a locking head is installed on the connecting surface of one of the cases to be connected, and a rotating metal fitting is installed on the connecting surface of the other case so that it can rotate freely within the connecting surface. The rotating metal fitting is integrally formed with an insertion hole into which the connecting pin can be inserted and a locking elongated hole having a smaller diameter than this insertion hole, and the connecting pin is inserted into the insertion hole of the rotating metal fitting. A case connecting device characterized in that the two cases are closely connected by rotating a rear rotating metal fitting and inserting a connecting pin into a locking elongated hole. 2. The insertion hole and the locking elongated hole are formed at positions symmetrical to the center of rotation of the rotary fitting, and connecting pins are implanted in the connection surface of the other case at positions corresponding to the insertion holes, respectively. A case connecting device according to claim 1 of the utility model registration claim. 3. A part of the rotating metal fitting is made to protrude outside the case housing, and a lever is provided at the lower end thereof extending in a direction perpendicular to the connecting surface, and this lever is provided with a slidable lever and a lever that extends from the connecting surface. An L-shaped notch is formed in the housing surface corresponding to the lever, and when the lever is locked, the lever engages with the groove of the notch in the housing, and the rotary metal fitting is rotated. The case connecting device according to claim 1, characterized in that the device is configured to lock the case. 4. A countersunk screw is used as the connecting pin, and the side of the locking elongated hole of the rotary fitting that comes into contact with the head of the connecting pin has a tapered surface that becomes thicker as the distance from the insertion hole increases. A case connecting device according to claim 1 of the claimed utility model registration.