JPS59194113A - Locking part - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION (1) Technical Field of the Invention The present invention relates to a lock component for locking or unlocking a front door of a housing of various electronic devices, etc., at the front of the housing.
In particular, the present invention relates to a lock component that does not become unlocked due to external shocks, vibrations, etc., has a small number of parts, and is easy to install.

(2) Prior Art and Problems As shown in Fig. 1(a), this type of conventional locking component involves attaching a female component 2 such as a plastic molded product to a fixed side member 1 such as a casing, and , movable side member 3 such as front door
By attaching the male part 4 to the female part 2 and pushing the movable member 3 in the direction of arrow A, the male part 4 is fitted onto the female part 2 and locked. Alternatively, as shown in Fig. 1 (1)), a steel ball 6 is projected into the recess 5 as the female part 2', the pressing force is adjusted with a spring T, and the male part 4' is fitted into the female part 2'. It was supposed to lock. but,
In all of the above conventional examples, the male part 4.4' is inserted and removed with a force of one uniformity, and the lock is not released naturally due to earthquakes, shocks and vibrations during transportation, etc. there were.

In addition, as another conventional example, as shown in FIG. 1(C),
A wire 8 having spring properties is provided inside the fixed side member 1, and a spiral groove 9 into which the wire 8 can enter is provided in the movable side member 3.
A stator 10 is provided, and this stator 10 is indicated by arrow B.
There is one that is inserted and rotated in the direction of arrow C to lock. Alternatively, as shown in FIGS. 1(d) and (e), the fixed side member is provided with a hook portion 11, and
A rotating lever 12 is provided on the movable side member, and by rotating the operating part 13 in a predetermined direction, the rotating lever 12 is hooked to the part 1.
There is one that locks by hooking it to 1. However, in all of the above conventional examples, it is necessary to align the wire 8 and the stator 10 as well as the hook part 11 and the rotating lever 12 in order to lock them, and the installation thereof is difficult. Further, the direction of rotation for locking is limited to one direction, and operability cannot be said to be good.

As another conventional example, as shown in FIG. 1(f),
A hook 14 is provided on the outer surface of the fixed side member 1, a hook ring 15 is provided on the outer surface of the movable upper member 3, and a lever 16 is provided.
There is a device in which a hook ring 15 is hooked and locked by operating the hook 14 in the direction of the arrow.

However, in this case, the hook 14, the hook ring 15, and the lever 16 are all exposed on the outer surface, which spoils the external appearance of the casing and the like.

(3) Purpose of the Invention The present invention has been made to solve the above-mentioned problems, and it is possible to prevent the υ lock from coming off due to external shocks or vibrations, etc., and it has a small number of parts and is easy to install. The purpose is to provide lock parts.

(41 Structure of the Invention and the above-mentioned object is that according to the present invention, the proximal end is locked and fixed in the fixing hole drilled in the movable side member, and the proximal end is latched and fixed to the fixed side member in an opposing manner. an m-lock member which extends and has both wing pieces whose tips elastically contract and expand to engage in the lock hole of the fixed 9111 member; It has a rotating operation part at its end, an engagement edge that engages with the tip of the first locking member, and an inner surface of both wings on the front side of the engagement edge. This is achieved by providing a lock component characterized in that it is combined with a second lock member provided with a cam portion that presses the lock member.

(5) Embodiments of the invention Hereinafter, embodiments of the invention will be described in detail with reference to the accompanying drawings.

FIGS. 2(a) to 2(C) are a partially sectional plan view, a partially sectional front view, and a right side view showing the first locking member 20 of the lock component according to the present invention, and FIGS. (d) is a partially sectional plan view, a front view, a right side view, and a left side view including the second locking member 21.

The first locking member 20 is a movable member 91 such as a front door of the housing.
11 sl' 22 and protrudes toward the fixed side member 23 formed on the front panel of the housing, etc., and is made of, for example, glass fiber-containing polycarbo, etc., and is drilled at a predetermined location on the movable side member 220. The elastic protrusion 26 provided near the proximal end 25 is inserted into the provided fixing hole 24 from the distal end and is fixed by being locked to the edge of the fixing hole 24 . The anti-rotation protrusion 26' on the first locking member 20 is pulled or fixed into the recess of the fixing hole 24. Therefore, both the first locking member 20 and the second locking part @21 do not fall.

From the base end s25, two wing pieces 21.
21 extend in opposite directions. These wing pieces 27.27 are
This is for locking the movable side member 22 to the fixed side member 23, and a locking protrusion 28.2B is provided at the tip thereof, and the tip elastically contracts and expands to It is inserted into a lock hole 29 drilled at a predetermined location of the member 23, and the above-mentioned latching protrusion 28, 28 can be latched onto the edge thereof. A hole 30 through which a second lock member 21 (described later) is inserted is formed in the central shaft portion of the first lock member 20. A fitting groove 31 into which a proximal end 33 of a second locking member 21 (described later) fits is formed on the outer surface of the proximal end 25, and a locking protrusion 2 at the distal end.
The cam portion 36 of the second locking member 21 is located on the inner surface of 8.2B.
A recessed portion 32 is formed into which the material is pressed and fitted.

A second locking member 21 as shown in FIGS. 3(a) to 3(d) is inserted into the hole 30 of the central shaft portion of the first locking member 20. As shown in FIG. This second locking member 21 serves to strengthen the lock between the movable side member 22 and the fixed 1 (11) member 23 by the latching protrusions 28.28 of the wing pieces 27.27 of the first locking member 20. It is made of, for example, polycarbonate containing glass fiber, and is rotatably inserted into the hole 30 of the first locking member 20.A shaft its 34 extends from the base end s33 of the second locking member 21. A substantially circular engagement edge 35 that engages with the tip surfaces of both wings 27 and 27 of the second lock member 200 is formed at the tip of the second lock member 200.The front side of this engagement edge 35 As shown in FIGS. 3(a) and 3(1), a cam portion 36 having a major axis and a minor axis l is formed. This cam portion 36 is press-fitted into a recess 32 formed on the inner surface of the locking protrusion 28.2B of the first locking member 20 to strengthen the lock. Further, a cut p crack 37 with an appropriate width is formed in the central portion of the shaft portion 34 from the middle portion to the tip portion. This notch crack 37 occurs when the cam portion 36 is rotated and press-fitted into the recessed portions 32 of the locking protrusions 2B and 28 of the first locking member 20. It is possible to contract and expand. As shown in FIGS. 3(a) and 3(d), the base end portion 33 of the second locking member 210 is provided with a rotation operation for rotating the second locking member 21 within the first locking member 20. A portion 38 is formed.

This consists of a hexagonal hole into which, for example, the end of a hexagonal wrench can be inserted. Alternatively, it may be a phillips-shaped or minus-shaped groove into which the tip of a phillips screwdriver or a flathead screwdriver can be inserted. If the base end portion 33 of the second locking member 210 is not strong enough, an insert component 39 formed by sintering or the like is provided as shown in FIG. 4, and the rotation operation portion 3B is formed therein. Good too.

FIG. 5 is a partially sectional plan view showing a state in which the first locking member 20 and the second locking member 21 are combined. The base end 33 of the second locking member 21 fits into the fitting groove 31 (see FIG. 2(a)) of the base end 25 of the first locking member 20 and engages with the step 40 thereof. Further, the engagement edge 835 at the tip of the second locking member 21 engages with the tip surface of the latching protrusion 28.28 at the tip of both wing pieces 27.21 of the first locking member 20 to prevent it from being pulled out. It has become.

Furthermore, in the locked state in which the second locking member 21 is rotated, the long diameter 1 of the cam portion 36 of the second locking member 21 is
15 (L) engages with the step 41 of the low weight in the recess 32 (see Fig. 2 (a)) on the inner surface of the locking protrusion 28.28 at the tip of the first locking member 20 and is removed. It is designed not to come out.

As shown in FIGS. 6 to 8, lock or unlock state display means are formed on the outer surfaces of the base end portions of the first lock member 20 and the second lock member 210. That is, as shown in FIGS. 6(a) and 6(b), the portion where the outer surface of the proximal end portion 25 of the first locking member 20 is still in contact with the inner surface of the proximal end portion 33 of the second locking member 210;
For example, on the surface of the stepped portion 40 shown in FIG.
3 (for example, blue) and 43' (for example, red). Here, letters 42 or colors 43 indicating the locked state are attached corresponding to the positions of the wing pieces 27 and 27 of the first locking member 20, and letters 42' or colors indicating unlocking are attached at a position orthogonal thereto. 43' is attached.

On the other hand, a display window 44 is formed in the base end portion 33 of the second locking member 21 at a position corresponding to the long diameter portion (L) of the cam portion 36, as shown in FIG. When the first locking member 20 and the second locking member 21 are combined as shown in FIG. 5, when the rotation operation portion 38 of the second locking member 21 is operated as shown in FIG. The above display window 44
A text display 42, 42' or a color display 43, 43' indicating lock or unlock appears.

Next, the operation of the lock component configured as described above will be explained with reference to FIGS. 9(a) to 9(d). First (a)
As shown in FIG.
are combined and fixed to the movable side member 22 (not shown). At this time, the second locking member 21 is operated to the unlocking side, and the short diameter portion (7) of the cam portion 36 is opposed to the latching protrusion 28, 28 of the first locking member 20. In this state, the movable member 22 is pushed in the direction of arrow A toward the lock hole 29 of the fixed member 23, as shown in (fi). Then, the wings 27.27 of the first locking member 200 bend inward due to their elasticity and the gap between them contracts, causing the locking protrusion 28.2B at the tip to engage the locking hole 2 of the fixed side member 23.
Enter 9. When the locking part is completely pushed in, the locking projections s28.28 of the wings 27.27 of the second locking member 210 completely enter the locking hole 29, and the locking projections 28.28 are expanded. and hook onto the edge of the lock hole 29. In this state, the movable member 22 is temporarily replaced by the fixed member 2.
3 (preliminary lock). In this state, operate the rotation operation part 38 of the second locking member 21 to move 9 to the left or right from the above-mentioned initial position.
Rotate 0 degrees. Then, as shown in (d), the long diameter portion (L) of the cam portion 36 of the second locking member 21 comes into pressure contact with the inner surface of the latching protrusion 28, 28 of the first locking member 20, and the aforementioned latching The protrusions 2B, 2B are expanded and firmly locked so that they cannot be pulled out from the lock hole 29 of the fixed side member 23 (main lock). To release the lock, perform the operations in the reverse order of the above.

10(a) to (c) show a lock in the case where a recess 832t into which a cam portion that elastically contracts and expands is fitted is formed on the inner surface of the latching protrusion 28.28 of the first locking member 20. This indicates the operating status. In this case, as shown in figure (b), the cam [36 contracts and rotates during the rotation operation, and (c)
As shown in the figure, in the fully locked state, the cam portion 36 expands and fits into the recess 32, so that the second locking member 21 does not inadvertently turn to the unlocking side. 11th
The figure shows a modification of the recess 32, in which the recess 32 is formed into a substantially U-shape.

In this case, when the second locking member 21 is rotated, its cam portion 36 passes through the U-shaped stepped portion of the recessed portion 32 and is engaged or unfitted, thereby locking or unlocking the second locking member 21. I wonder how it feels to operate it.

(6) Effects of the Invention Since the present invention is configured as described above, by combining the first locking member 20 and the second locking member 21 and rotating the second locking member 21, the preliminary lock and the main lock can be locked. Can be locked. At the time of main locking, the cam part 36 of the second locking part ladle 21 expands the locking protrusion 28 of the first locking member 20 to securely lock the locking part. etc., it is possible to prevent the lock from being released naturally. Furthermore, since it is composed of the first locking member 20 and the second locking member 21, the number of parts is small and installation thereof is easy. Furthermore, the second locking member 21 may be rotated in either direction.
The operability can be improved.

Furthermore, the first lock member 20 and the second lock member 2
1 are provided so as to protrude from the inner surface of the movable member 22, so that almost nothing is exposed on the outer surface of the casing, etc., thereby improving its aesthetic appearance.

[Brief explanation of the drawing]

Figures 1 (a) to (f) are explanatory diagrams showing a conventional lock component, and Figures 2 (a) to (C) are partially sectional plan views showing a first lock member of the lock component according to the present invention. A partially sectional front view and a right side view, and FIGS. 3(a) to 3(d) are a partially sectional plan view, a front view, a right side view, and a left side view showing the second locking member.
Figure 4 is a cross-sectional view showing a modified example of the rotating operation part, and Figure 5 is
The figure is a partially sectional plan view showing a state in which the first locking member and the second locking member are combined, and FIGS. 6(a) and (1)) show Table 7r on the outer surface of the proximal end of the first locking member. FIG. 7 is an explanatory diagram showing the display window provided at the base end of the second locking member, and FIG. 8 is an explanatory diagram showing the status display visible from the display window. 9(a) to 9(d) are sectional views of main parts showing the operating state of the lock component according to the present invention, and FIG. 10(a) to (C) are other embodiments of the cam part and the locking protrusion. FIG. 11 is a diagram illustrating a main part showing an example, and FIG. 11 is a diagram illustrating a main part showing still another embodiment. 20...First lock member 21...Second lock member 22...Movable side member 23...Fixed 1t1 member 24...Fixed Hole 25... Proximal end portion 26 of the first locking member...
...Elastic protrusion, 26'...Rotation prevention protrusion 27
... Wing piece 28 ... Latching protrusion 29 ... Lock hole 30 ... Center shaft hole 31 ... Fitting groove 32... Recessed portion of the latching protrusion 33... Base end portion 34 of the second locking member...
...Shaft part 35...Engagement edge part 36...Cam part 37...Crack 3B...Rotation operation part 40.41... ...Stepped portion 42.42'...Character display 43.43'...Color display 44...Display window Fig. 6

Claims (1)

[Claims] 1. The proximal end is locked and fixed in a fixed hole drilled in the movable member, and extends from the proximal end in opposition to the force of the fixed member 111, and its distal end is elastic. A first locking member having both wing pieces that is contracted and expanded to be engaged in a locking hole of a fixed side member, and a rotational operation portion that is rotatably inserted into a central shaft hole of this first locking member and has a rotational operation portion at a base end thereof. and an engagement edge that engages with the tip of the first locking member, and a cam portion that presses the inner surfaces of the wings on the front side of the engagement edge. A lock component characterized by being formed in combination with a second lock member. 2. The cam portion of the second locking member can be elastically contracted and expanded, and the portion of the first locking member that the cam portion comes into contact with is provided with a recess into which the cam portion fits. A lock component according to claim 1. 3. The locking component according to claim 1 or 2, characterized in that a locking or unlocking state display means is provided on the outer surface of the proximal end of the first locking member and the second locking member.