JPH0519484Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial field of application] The present invention is a latch, in particular, a method of attaching one element of the latch to a box, and attaching the other element of the latch to a lid which is pivotally connected to the box, thereby pivoting the lid. It relates to a latch in which one element and the other element mechanically engage when the lid is brought into contact with the box.

[Conventional technology]

Many latches of this type have been developed and used in the past, but the door-shaped box lid does not have a handle for pulling the lid on its outer surface, and is designed so that the outer surface of the box door becomes flat when the lid is closed. is appreciated. This type of box has a strike or push bar on the inside of the lid or door, and the box is provided with a mechanism for receiving and gripping the push bar.

[Problem that the invention attempts to solve]

As mentioned above, in the conventional latch, when the lid door is opened, one element of the latch that receives and locks the push rod attached to the lid is exposed as it is on the box body, which is an eyesore for the user. be. In particular, when the box and lid are designed to have a beautiful appearance, if a part of the mechanism that grips the push rod is exposed when the box is opened, the aesthetic sense of the box or lid's appearance will be affected. This gives an extremely disproportionate impression.

[Means to solve the problem]

The latch of the present invention is a latch equipped with a mechanism for receiving and releasably gripping and locking the strike, and
The latch includes a fixed cylinder having a rectangular opening in the axial direction for inserting the strike, a long strip projecting in the axial direction from a rectangular base, and a long and narrow piece that is pivotally integrated with the rectangular base near the base and extends along both sides of the long strip. a support base having a pair of arms extending the length of the strip and having an inwardly inclined hook at the tip for gripping and locking the strip and fixed in a fixed cylinder to prevent the strip from protruding from the opening; and a support base that receives the pushing force of the strike. The arm includes a slider having a closed front end, a pair of hook-shaped eaves on both sides in the length direction, and sliding on the support base against spring pressure so as not to be ejected from the support base. The eave has a rod integrally projecting in the width direction, and the eave is formed with a parallel gutter that receives the protruding rod and has narrower gutter intervals in a portion near the front end of the slider, and further includes a support base. The mooring mechanism includes a mooring mechanism in which the slider and the slider are combined to moor the slider to the support base by pushing the strike, and to release the mooring by pushing the strike again.

〔Example〕

Next, to explain the drawings, Fig. 1 and Fig. 2 are perspective views showing a partial cross section of the fixed cylinder with a locking mechanism inside. The strike is removed from the drawing in its engaged state. Figure 3 is an exploded perspective view of the same as above, Figure 4a is a side view of the strike attached to the lid, and Figure 4b is a cross-sectional view in the negative direction of Figure 2, showing engagement with the strike, and a partial cross-section. It represents.

The fixed tube 1 is a square tube with an opening 2 at one end in the axial direction and a closed end 3. The opening widens in the width direction for pivoting the pivoting arm described later, and the outside thereof is an opening 2 at the other end 3. The widening portion ends at a stepped portion 4 which extends toward the rear end in the direction. An elastic locking piece 5 protrudes outward from the portion following the step. The inner end of the cylinder 1 in the axial direction has a locking step 7 for fixing the support stand 6 and an auxiliary locking step 8, and the bottom surface 9 has an opening 2 for inserting the support stand.
A pair of guide rails 10, 10 diverge toward
A is provided. Note that 11 is a hole provided on the side surface. The support base 6 is made of a rectangular base 12 and a long strip 13.
There is a pair of arms 14, 14a that protrude in the length direction and extend from a part of the rectangular base 12 along both sides of the strip by the length of the strip. The structure is such that it opens. Numerals 15 and 15a are rods for opening and closing the arm, which are integrated with the arm and whose upper ends protrude in the width direction of the arm. 16 is a hook provided at the end of the arm,
It engages with the hole 11. At the ends of the rectangular base there are cutouts 17, 17a that are locked to the locking stages 7, 8.
is provided. A heart-shaped depression 18 is provided on the surface of the rectangular base. The depression is irregular heart-shaped, with the distal end 20 of the first leaf part 19 being close to the leaf axis, and the distal end 22 of the second leaf part 21 being away from the leaf axis;
The end 22 is furthest away from the other end 23 of the leaf.
Inside the heart, there is a hook-shaped island 24 at the bend 2.
5 is provided facing the dividing line between the first and second leaf portions. The curved surfaces of the end portions 20, 22, and 23 and the curved portion 25 are shaped to match the curved surface of the sphere described later. The inner surface of one wing 26 of the island facing the first leaf separated by the bend is straight, and the tip of the other wing 27 is slightly curved toward the end 22 . slider 3
0 is a groove-shaped one with one end, that is, the front end 32, closed.
The outer surfaces 31, 31a of the groove-shaped protruding edges are the arms 14, 14.
The outer surface of the abdomen slides on the elongated piece 13 along the inner surface of a. A pair of eaves 33 are bent in a hook shape in the length direction from both ends of the projecting edges 31, 31a.
33a, and there are downward gutters 34, 3 on the inner surface of the eaves.
4a are formed respectively. Each trough is parallel to the axis of the slider, but in the portions 35, 35a near the front end, the distance between the troughs is narrowed through an inclined portion.
A semi-cylindrical groove 36 is formed in the rear portion of the slider across the outer or lower surface of the abdomen. The fixed tube 1, the support base 6, and the slider 30 are all integrally molded from thermoplastic synthetic resin. The above three members have a coil spring 40 passed between the spring receivers 38 and 39 on the other end of the fixed cylinder and the inner surface of the front end of the slider, and a ball 41 arranged between the heart-shaped recess 18 and the groove 36, so that the ball can be split in half by both. The mooring mechanism for the slider is formed by holding each of the sliders, and when the rods 15 and 15a are inserted into the troughs 34 and 34a, and the support base 6 is inserted together with the slider 30 from the opening 2 into the fixed cylinder along the guide rail 10, the notch 1
7, 17a are locking stages 7, 8 and hook pieces 16, 16a
are engaged with the holes 11 and 11a, respectively, and the support base 6 is fixed to the fixed cylinder, and the slider slides on the support base within the fixed cylinder. The strike grip, that is, the push rod grip assembly assembled in this manner is constructed so that the outer surfaces of the slider and arm do not protrude beyond the opening of the fixed cylinder. This assembly is inserted into a latch hole provided on the front side of the box body, and the projection 45 inside the hole engages with the elastic locking piece 5 and is fixed.

Next, the gripping of the strike 47 protruding from the lid 46 and the assembly for gripping it will be described. As shown in the figure, the tip of the strike has a cylindrical portion 48 with a larger diameter than the shaft, and a truncated conical portion 4 facing toward the tip.
9 and more. As shown in the figure, the tip of the arm has a hook shape 50, 50a that is inclined inward. Rods 15, 15 fitted in gutters 34, 34a
A is located at a wide spaced part, and the space between the arms is widened to make it easier to receive a strike. When the strike 47 is inserted into the opening 2, the leading end of the strike hits the front end 32 of the slider 30 and pushes the slider into the fixed cylinder against the pressure of the spring 40. At this time, the ball 41 between the support base and the slider follows a path p, reaches one end 20, and assumes a position 41p.
Then, when the pushing pressure is released, the slider 30 returns along the path q due to the restoring force of the spring, and the ball 4 follows this path.
1 reaches the bend 25 of the island 24 and takes the position 41q, where the slider stops against the support base and the lid is closed. During this time, gutters 34, 34
The rods 15 and 15a that fit into the a are initially placed in a wide-spaced part, and the spacing between the arms is widened to make it easier to receive the strike, so the strike easily creeps between the arms 14 and 14a, but the movement of the slider Accordingly, the rods 15, 15a fitted in the gutters 34, 34a are arranged from the wide part to the narrow part 3.
5, 35a, the arms are pivoted near their bases and the spacing between the arms is narrowed, thereby tightly fixing the strike in close contact with the gripped strike. The slider moves inwards and the ball hits 41
While proceeding to position p, the hooks 50, 50a of the arms grip the base of the large diameter 48 of the strike, and the strike and the arm complete the gripping engagement (see Fig. 4b).
At position 41q, the gripping and locking state is maintained. Next time you open the lid, press the strike lightly again through the lid toward the fixed cylinder, and the slider will move inwards.
In the mooring mechanism, the ball also follows the path r from the position 41q, reaches the other end 22, and assumes the position 41r, but when the pressure is released, the ball moves from the position 41r to the path s.
, and return to the initial position 41s. During this time, the slider is restored by the spring pressure and returned to its initial position, and the strike is also pushed back.As the slider is restored, the arm also pivots and the distance between its tips becomes wider. As described above, the fixed cylinder 1, which is equipped with a mechanism for gripping and locking the slider, is attached to the upper part of the opening of the box body 44, and the strike 47 is attached to the main body 44.
It is used by attaching it near the tip of a lid 46 screwed onto the lower part of the opening of the box, pressing the lid 46 against the box body to engage the latch, and then lightly pushing the lid 46 to release the latch.

In the above embodiment, the external ends of the arms 14, 14a are tapered to converge inward to facilitate receiving a strike (FIGS. 1 to 4).
However, as mentioned above, when the strike is released and the slider moves forward, the rods 15, 15a are connected to the gutter 34,
In the wide-spaced portion of 34a, the spacing between the arms is widened to make it easier to receive a strike. However, in this case, the converging taper at the tip of the arm is not necessarily necessary for receiving the strike, as shown in FIG. 1 and the like. It is also possible to make the outer end surfaces 51 and 51a of the arms flat so that when the slider moves forward, the outer end surfaces coincide with the front end surface of the slider, that is, the outer surface 32 (FIG. 8). In this case, it is preferable to provide the inner surfaces 52, 52a of the arms between the outer end surfaces 51, 51a and the hooks 50, 50a so as to be perpendicular to the outer end surfaces. In this way, when the slider moves forward and stops when the strike is released, the front end surface 32 of the slider and the outer end surfaces 51, 51a of the arms appear on the same plane, and there is no visible boundary between them, and there is no unevenness. Shows plain beauty.

[Effect of idea]

As explained above, in the latch of the present invention, by inserting the strike into a fixed tube that includes a strike holding and locking mechanism, this mechanism grips and locks the strike well. During gripping, the rods 15, 15a pivot their arms while moving from a wide gutter spacing to a narrow gutter spacing, so gripping is performed without applying a strong impact to the strike. Since the gripping and locking mechanism is built-in,
Not a single part of this mechanism is ejected from the opening of the fixed cylinder. Therefore, the end surface of the slider and the tip end surface of the arm are made to coincide with the opening surface of the fixed cylinder, so that when the strike is separated from the opening surface, no unsightly material remains on the opening surface. In addition, the opening surface is closed, preventing dust from entering.

[Brief explanation of drawings]

1 and 2 are partially sectional perspective views of a fixed tube showing the main parts of the present invention equipped with a locking mechanism, with FIG. 1 showing the locking state when released and FIG. 2 showing the locked state.
Figure 3 is an exploded perspective view, Figure 4a is a side view of the strike attached to the lid, and Figure 4b is the same figure as shown in Figure 2.
A directional cross-sectional view shows the locked state. Fig. 5 is a plan view of the heart-shaped recess, Figs. 6 and 7 are side sectional views of the box to which the latch of the present invention is attached, Fig. 6 shows the latch when released, Fig. 7 shows the latch when locked, and Fig. 8 shows the latch when it is locked. The figure is a perspective view with the outer end surface of the arm flattened. 1...Fixed tube, 2...Opening, 6...Support stand, 1
4, 14a... Arm, 15, 15a... Rod, 1
8... Heart-shaped depression, 24... Island, 32... Front end surface, 34, 34a... Gutter, 36... Groove, 38, 3
9... Spring holder, 40... Spring, 41... Ball, 47
……strike.

Claims (1)

[Scope of utility model registration request] A latch having a mechanism for receiving and releasably gripping and locking a strike, the latch having a fixed tube 1 having a rectangular opening in the axial direction for inserting the strike.
and an elongated piece 13 protruding from the rectangular base 12 in the axial direction.
and a pair of arms 14, 14a which are pivotally integrated near the base of the rectangular base, extend along both sides of the strip to the length of the strip, and have inwardly inclined hooks 50, 50a at their tips for gripping and locking strikes. a support base 6 fixed in a fixed cylinder so that the strip does not protrude from the opening, and a pair of eaves 33 having a closed front end to receive the pushing force of the strike and having hook-shaped bends on both sides in the length direction. , 33a, the slider 30 slides on the support base against spring pressure so as not to be ejected from the support base.
The arm has rods 15, 15a that are integral with each other and protrude in the width direction, and the eave receives the protruding rod, and a parallel gutter with narrower gutter spacing is provided at a portion near the front end of the slider. 34, 34a, and further includes a mooring mechanism in which the support base and the slider are combined to moor the slider to the support base by pushing the strike and release the mooring by pushing the strike again.