JP2743064B2 - Latch mechanism - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a latch mechanism for removably locking an accessory of various main bodies.

[0002]

2. Description of the Related Art For example, when a lamp shade as an accessory is locked to a lighting fixture main body, which is a typical example of a main body, as shown in FIG. Two types of screw receiving brackets (3) and (4) are mounted and fixed correspondingly to the shade mounting surface (2) of 1), and firstly, the first screw receiving bracket (3) is screwed into one of the screw receiving brackets (3). The lamp shade (6) is once fixed by the screw (5), and then the pressing claw (7) is positioned so as to cover and coat the first screw (5), and the other screw receiving bracket (4).
It is fixed by the second screw (8) which is screwed into the screw.

[0003]

However, in this case, the first and second screws (5) and (8) must be operated.
In addition, since the presser claw (7) comes off alone, it is very troublesome to engage and disengage the lamp shade (6), and it is not possible to obtain a stable and firmly locked state of the lamp shade (6).

[0004] In addition, when the lamp shade (6) is locked, the second screw (8) for fixing the pressing claw (7) is exposed.

[0005]

SUMMARY OF THE INVENTION The present invention intends to drastically solve such a problem, and a versatile latch mechanism for this purpose is provided with a pair of parallel movable arms on a mounting surface for an accessory. A main body having an opening formed therein, a movable claw for engaging and disengaging an accessory from one direction to the mounting surface of the main body, and two conductive holes also opening on the mounting surface of the main body. As a positional relationship interposed between each other, a fixed base integrally erected in the other direction from the mounting surface of the main body,
A movable arm that is integrally extended from the movable claw through both conduction holes that are opened to the mounting surface of the main body in a relational state sandwiching the fixed base;

[0006] The opposed parallel side walls of the fixed base are divided into a pair of front and rear parts, and the top edges of both front side wall pieces are formed on the cam surface in a downwardly inclined state while the remaining rear side wall pieces are formed. A long and narrow elongate guide pin for the rear pin is opened in the front and rear direction, and the movable arm of the movable claw is moved to the fixed base by the rear pin which penetrates and crosses the long and short guide pin for the fixed base. Along with the pivotal connection to freely move back and forth and rotate,
Similarly, a front pin that moves along the cam surface of the fixed base, penetrates and traverses the movable arm of the movable claw in parallel with the rear pin, and the front pin is mounted on the fixed base by a spiral coil spring. Always press and urge the cam surface

When the movable claw is pushed in a direction in which the rear pin of the movable arm advances along the advance / retreat guide slot of the fixed base, the front pin of the movable arm is pivoted with the rear pin as a pivot point. The movable claw that rotates so as to ride on the cam surface keeps its attachment on the mounting surface of the main body, and the movable claw is also moved by the rear pin of the movable arm into the elongated guide hole of the fixed base. When the pull-out operation is performed in the retreating direction, the movable pin is pivoted so that the front pin of the movable arm also descends from the cam surface of the fixed base using the rear pin as a pivot point. The relationship is set so that the locked state of the object can be released.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The specific structure of the present invention will be described below in detail with reference to the drawings. FIGS. 1 to 4 show a latch mechanism (A) of the present invention applied to a lighting fixture for comparison with the prior art. )
(10) is a lighting fixture main body as a main body, and (11) is a lamp shade as an accessory thereof, for locking the lighting fixture main body (10) in a detachable manner. The latch mechanism (A) is used.

The luminaire main body (10) is made of a ring-shaped metal plate as shown in FIGS. 2 and 4, and its peripheral portion is drawn in a step shape having a constant depth (S1). (12) is a shade mounting surface of the lighting fixture body (10), and a circular top plate (13) having a small diameter is joined to the lighting fixture body (10) from below in a cover state and fixed by a plurality of screws (14). It is integrated.

[0010] (15) is a conduction hole for a power cord opened at the center of the top plate (13), and (16) is a mounting plate for a rosette fixedly installed around the periphery thereof through a small screw (17). , (18) are a plurality of lamp holders similarly fixed to the top plate (13) from below by screws (19) as a whole radially symmetric distribution type.
A stepped ring-shaped fluorescent lamp (20) is received and moored. (21) is a ballast, (22) is a terminal block, (23)
Indicates a glow lamp.

On the other hand, the lamp shade (11) is formed by curving a conical saucer as shown in FIG. 5 from an acrylic resin such as milky white, so that the fluorescent lamp (20) is formed.
Is entirely encapsulated from below. (24) and (25) attach the peripheral part of the lamp shade (11) to the lighting fixture body (1).
The fixed claw and the movable claw that are locked to the shade mounting surface (12) of (0) are two types, and a pair of adjacent two (a total of four in the example in the figure) is a radially symmetric distribution type. Are scattered.

The fixed claw (24) and the movable claw (25) are identical to each other, and are both formed into substantially inverted isosceles triangles in front view as extracted in FIGS. An upper base including a pair of side pieces (27) bent backward from the decorative board (26) can be in close contact with the shade mounting surface (12) of the lighting fixture body (10) from below. I have. (28) is also the front decorative board (1
6) A pair of parallel vertical rib-like mounting blocks that are integrally raised from the back, and each of them is provided with a screw hole (29) that opens upward.

A pair of two fixed claws (24) is shown in FIG.
As is evident from 1 and 12, the lighting fixture body (10)
Through a pair of stupid holes (30) opened corresponding to the shade mounting surfaces (12) of the mounting blocks (28).
Screw (3) screwed into the screw hole (29) of
According to 1), the shade mounting surface (1) of the lighting fixture body (10) is provided.
It is attached and fixed in 2).

On the other hand, the movable claw (25) forms the latch mechanism (A) of the present invention, and a pair of the movable claw (25) is pivoted to the shade mounting surface (12) of the lighting fixture body (10) as follows. The lamp shade (11) can be detachably locked to the shade mounting surface (12) of the lighting fixture body (10) by its rotating operation.

That is, in the illustrated use example, the fixed claw (2
By rotating a pair of adjacent two movable claws (25) for a total of four (4) and movable claws (25), the lamp shade (11) can be moved relative to the lighting fixture body (10). The fluorescent lamp (20) can be attached or detached, and the replacement work of the fluorescent lamp (20) can be conveniently performed.

The details of the above-mentioned latch mechanism (A) will be described. Referring to FIGS.
2) is substantially U-shaped with a certain depth (S2) when viewed from the front-back direction (radial direction of the lighting fixture body), and the inverted L in side view.
FIGS. 19 to 21 show a movable arm shaped like a letter, and front and rear ends of parallel side walls (33) facing each other.
A pair of the front pin receiving holes (34) and the rear pin receiving holes (35) are distributed.

The bottom wall (36) of the movable arm (32) is also attached to the mounting block (28) of the movable claw (25).
The movable claw (2) is screwed into a pair of left and right screw holes (29) that are opened from above by a small screw (37).
It is attached and fixed to 5). The movable arm (32)
Are integrally extended upward from the movable claw (25). (38) is a pair of left and right fool holes formed in the bottom wall (36) of the movable arm (32), and it goes without saying that they correspond to the screw holes (29) of the movable claw (25). .

(39) A pair of left and right openings formed in the shade mounting surface (12) of the lighting fixture body (10) in order to extend the side wall (33) of the movable arm (32) upward and tall. These are parallel conducting holes for the movable arm, and extend elongated in the front-rear direction (radial direction of the lighting fixture body).

(40) is a through hole (3) for the movable arm.
As the positional relationship between the left and right of 9), there are a plurality of (three in the example in the figure) screw holes which are also distributed in the shade mounting surface (12) of the lighting fixture body (10). Used for mounting the base.

(41) is a cross-shaped cross-section in a plan view that divides a pair of the screw holes (40) arranged in parallel, and also has a conductive hole (12) for the movable arm in the shade mounting surface (12) of the lighting fixture body (10). 39) A spring retainer positioning hole which is notched and opened between the left and right sides and receives a spring retainer described later.

Reference numeral (42) denotes a fixed base for receiving the movable arm (32) of the movable claw (25).
25, it is substantially U-shaped with a certain depth (S3) narrower than the movable arm (32) when viewed from the front-back direction (radial direction of the lighting fixture main body), and when viewed from the side. The bottom wall (43) is formed substantially in an inverted L shape, and a rear wall (44) for receiving a rear end portion of a spiral coil spring, which will be described later, is integrally formed from the rear end of the bottom wall (43). .

The bottom wall (44) of the fixed base (42) corresponds to a total of three screw holes (40) distributed on the shade mounting surface (12) of the lighting fixture body (10). The stupid hole (45) and the shade mounting surface (1
2) The positioning hole (41) for the spring retainer and the cross-shaped positioning communication hole (46) corresponding thereto are respectively opened, and screwed into the screw hole (40) through the fool hole (45) from above. The fixed base (42) is mounted and fixed to the shade mounting surface (12) of the lighting fixture body (10) by the fastened small screw (47).

In this case, the conductive hole (39) for the movable arm is opened in the shade mounting surface (12) of the lighting fixture body (10).
Through the movable arm (32), which is extended upward from the movable claw (25), to the fixed base (42).
Are sandwiched between the side wall (48) of the fixed base (42) and the side wall (3) of the movable arm (32).
3) will be aligned.

Further, the side wall (48) of the fixed base (42) is divided between the front and rear portions as a pair defining a front pin lowering guide groove (G). The cam surface (49) in which the side wall piece (48f) is relatively short and the top edge thereof is inclined downward.
It is shaped as.

The other rear side wall piece (48r) is taller than the front side wall piece (48f), and has a rear end portion for a rear pin extending in the front-rear direction (radial direction of the lighting fixture body). An opening / closing guide slot (50) is formed, and this is a side wall (33) in the movable arm (32).
And a receiving hole (35) for a rear pin which is opened at a rear end of the rear pin.

Reference numeral (51) designates a rear pin for pivotally connecting the movable arm (32) and the fixed base (42), the former receiving pin (35) for the rear pin, and the latter a reciprocating guide for the rear pin. The movable arm (32) of the movable claw (25) can rotate around the rear pin (51) as a fulcrum, and can pass through the elongated hole (50). It is also possible to move forward and backward along the front-back direction (radial direction of the lighting fixture main body).

(52) is traversed in parallel with the rear pin (51) through a front pin receiving hole (34) opened at the front end of the side wall (33) of the movable arm (32). The front pin, which is a fixed base (4
2) the cam surface (49) formed on the front side wall piece (48f) is engaged with the cam surface (49), and the cam surface (49) is moved up and down with the movement of the movable arm (32). It is supposed to.

Numeral (53) is a spiral coil spring which constantly presses and biases the front pin (52) of the movable arm (32) against the cam surface (49) of the fixed base (42). The front pin (52) is locked from above while the rear end is also separated from the fixed base (4).
The rear wall (44) of (2) is also locked from above.

(54) The above spiral coil spring (53)
26 to 28, which form an inverted L-shape as viewed from the side as shown in FIGS. 26 to 28, and whose bent hanging pieces (55) are fixed from above to the fixed base (42).
The lighting fixture body (1) passes through the positioning communication hole (46) of the lighting fixture.
In the state in which it is inserted and locked into the spring retainer positioning hole (41) opened in the shade mounting surface (12) of (0), it is fixed from the pair of left and right fool holes (57) opened in the remaining flat mounting piece (56). Stupid hole (4
5), the fixed base (42) is also used as the small screw (47), which is also screwed into the screw hole (40) corresponding to the shade mounting surface (12) of the lighting fixture body (10). Together with the lighting fixture main body (10) and fixed to the shade mounting surface (12).

The movable arm (3) of the movable claw (25)
2) is extended from the lower part of the lighting fixture main body (10) upward through the movable arm conduction hole (39) of the shade mounting surface (12), and the fixed base (4).
2) is also fixed to the shade mounting surface (12) from above, so that the fixed depth (S3) of the movable arm (32) is larger than the fixed depth (S3) of the fixed base (42).
2) is deeper, and in any case, the movable arm (32)
The fixed base (42) is in a makeup state surrounded by the lighting fixture main body (10) having a certain depth (S1) so as to be invisible from the outside.

In the illustrated use example, a lamp shade (11) as an accessory thereof is fixed on a shade mounting surface (12) of a lighting fixture body (10), which is a main body, by a fixed claw (24) and a movable claw (25). The lampshade (11) can be removed by operating each of the movable claws (25) in the order shown in FIG. 29.

That is, while the movable claw (25) is grasped with the fingertip of one hand, the pull-out operation is performed along the radial direction of the lighting fixture main body (10), so that as is clear from FIG. The rear pin (51) of the movable arm (32) integrally extending upward from the movable claw (25) retreats along the advance / retreat guide slot (50) of the fixed base (42), and also wraps around. The front pin (52) of the movable arm (32) which receives the urging force of the coil spring (53) descends from the cam surface (49) of the fixed base (42) to the guide groove (G), thereby moving the movable arm (32). The arm (32) rotates around the rear pin (51) as a pivot point, and the movable claw (25) is opened from the ramp shade (11) in a retracted state.

Therefore, the lamp shade (11) can be quickly and reliably removed from the lighting fixture body (10) by pulling out the lamp shade (11) from the fixing claw (24).
The replacement work of the fluorescent lamp (20) can be conveniently performed.

On the other hand, when the lamp shade (11) is locked to the lighting fixture main body (10) again, the lamp shade (11) is locked in a state of being inserted into the fixed claw (24), and then the movable claw (25) is locked. May be pushed in along the radial direction of the lighting fixture body (10) while also holding the fingertip with one finger.

Then, FIG. 15 corresponding to FIG.
As is apparent from FIG. 5, the rear pin (51) of the movable arm (32) is connected to the elongated guide slot (5) of the fixed base (42).
0) along with the movable arm (3
The front pin (52) of 2) resists the urging force of the spiral coil spring (53), and the cam surface (49) of the fixed base (42).
, The movable arm (32) also rotates in the opposite direction with the rear pin (51) as a pivot point, and the movable claw (25) is closed in a locked state with the ramp shade (11). It will be.

And such a lighting fixture body (10)
When the ramp shade (11) is locked with respect to the movable arm (32), the front pin (52) of the movable arm (32) is pressed against the spiral coil spring (53), and the front pin (52) and the rear pin are Since all the pins (51) pass through the movable arm (32) and the fixed base (42), a stable and firm installation state is maintained.

The fixed base (42) and the spring retainer (54) forming the latch mechanism (A) of the illustrated embodiment are
It is a separate object from the lighting fixture body (10), is fixed to the shade mounting surface (12) by small screws (47), and the movable arm (32) is also independent and independent of the movable claw (25). And the mounting block (2) of the movable claw (25)
8) It is attached and fixed with small screws (37).
The fixed base (42) and the spring retainer (54) are bent and raised integrally from the shade mounting surface (12), and the movable arm (32) is bent and raised integrally from the movable claw (25) to extend. You may.

The fixed base (42) and the movable arm (32) are both substantially U-shaped, but a pair of parallel side walls (48) (33) which are aligned with each other. ), The side walls (4
8) A fixed base (42) in which a pair of (33) is separated.
Or as the movable arm (32).

Further, in the example of use of FIGS. 1 to 29 described above, the shade mounting surface (1) of the lighting fixture main body (10), which is the main body.
To 2) a movable claw (25) whose separate lampshade (11) as an accessory forms a latch mechanism (A)
, And a pair of adjacent two pairs of fixed claws (24) are locked by a total of four. However, the shade mounting surface ( 1
2) Open / closeable lamp shade (1)
The latch mechanism (A) of the present invention is also applicable to the case where the peripheral portion of 1) is locked in a closed state with the shade mounting surface (12).
Can be used as it is.

That is, as is apparent from FIG. 30 showing another example of use, one of the fixing claws (24a) is attached and fixed to the periphery of the lamp shade (11) by a plurality of screws (58). The movable arm (32a), which is also substantially U-shaped, is integrated upward from the fixed claw (24a) through the movable arm conduction hole (39a) opened in the shade mounting surface (12) of the lighting fixture body (10). To be extended. (37
a) is a plurality of small screws for fixing the bottom wall (36a) of the movable arm (32a) to the fixed claw (24a).

On the other hand, a substantially U-shaped fixed base (42a) for receiving the movable arm (32a) is mounted on the shade mounting surface (12) of the lighting fixture body (10) from above by a small screw (47a). Attach and fix, and the opposite parallel side walls (4) of the fixing base (42a).
8a) and one side of the pivot pin (59) penetrating and traversing both side walls (33a) of the movable arm (32a) in a relation to sandwich the pivot pin (59). The lamp shade (11) can be opened and closed.

The number of the movable claws (25) having the structure described with reference to FIGS.
By applying the method described above, the peripheral portion of the lamp shade (11) is locked, and the lamp shade (11) is fixed to the shade mounting surface (12) of the lighting fixture body (10) in a closed state. Other configurations and operations are substantially the same as those of the above-described embodiment of FIGS.
Only the reference numerals corresponding to those in FIGS. 1 to 29 are entered in FIG. 30, and a detailed description thereof will be omitted.

FIGS. 1 to 30 show an embodiment of the present invention applied to a ceiling-mounted lighting device, in which the latch mechanism (A) is attached to a shade mounting surface (12) in a horizontal installation state. As a result, the movable claw (25) locks the lamp shade (11) from below. However, as suggested from various usage examples in FIGS. The installation orientation of the device and the direction in which the movable claw (25) is locked can be freely selected.

For example, as shown in FIG. 31, the main body is a bracket (10a) which is attached and fixed to the wall surface of the building, and the latch mechanism (A) corresponding to the fixing claw (24) at the lower end thereof is mounted on the bracket (10a). And the movable claw (25) is used to attach the lamp shade (11) as an accessory.
The peripheral part of a) can be used so as to be locked from above.

In addition to the above-mentioned lighting equipment, for example, FIG.
With the bases (10b) and (10c) attached and fixed to the wall surface of the building, such as 2, 33, the signboard and the blackboard are respectively provided by the movable claws (25) of the latch mechanism (A) attached thereto. In addition to being able to lock various accessories (11b) and (11c) such as a forehead and a bag (11) corresponding to the accessory of a car (10d) as a main body as shown in FIG.
On the other hand, the present invention can also be widely used for attaching the above-mentioned latch mechanism (A) to d) and locking the movable claw (25) to the roof carrier of the automobile (10d). In this case, the shape of the movable claw (25) is not limited to the above-described substantially inverted isosceles triangle as viewed from the front, and an appropriate shape according to various types of accessories may be selected.

[0046]

As described above, the latch mechanism of the present invention comprises a main body (10) having a pair of parallel movable arm conducting holes (39) formed in the attachment mounting surface (12). A movable claw (25) for engaging and disengaging the accessory (11) from one direction to the mounting surface (12) of the main body (10), and the movable claw (25) also on the mounting surface (12) of the main body (10). As a positional relationship between the two open conduction holes (39), a fixed base (42) integrally erected in the other direction from the mounting surface (12) of the main body (10), Nail (25)
And a movable arm (32) integrally extended through the two through-holes (39) that open to the mounting surface (12) of the main body (10) in a state of sandwiching the fixed base (42).

The opposed parallel side walls (48) of the fixed base (42) are divided into a pair of front and rear parts, and the top edges of both front side wall pieces (48f) are rearwardly inclined and the inclined cam surface (49). On the other hand, the rear rear wall piece (48r) is formed with a long and narrow elongate rear pin guide / return guide hole (50) in the front-rear direction. The movable arm (32) of the movable claw (25) is pivotally connected to the fixed base (42) of the movable claw (25) by a rear pin (51) penetrating and crossing the movable arm (50) so that the movable arm (32) can move forward and backward and rotate. At the same time, the front pin (52), which also moves along the cam surface (49) of the fixed base (42), is moved to the movable claw (2).
The movable arm (32) of (5) is penetrated and traversed in parallel with the rear pin (51), and the front pin (52) is moved by the spiral coil spring (53) installed on the fixed base (42). And always press against the surface (49),

The movable claw (25) is connected to its movable arm (3).
2) When the rear pin (51) is pushed in the forward direction along the advance / retreat guide slot (50) of the fixed base (42), the rear pin (51) is used as a pivot point for the movable arm (32). The front pin (52) is fixed to the fixed base (4
2) The movable claw (25) that rotates so as to ride on the cam surface (49) allows the mounting surface (1) of the main body (10) to be mounted.
2) The appendage (11) of the navel is kept in a locked state, and the movable claw (25) is also moved to the rear pin (5) of the movable arm (32).
When 1) is pulled out in the retreating direction along the advance / retreat guide slot (50) of the fixed base (42), the movable pin (51) is also used as a pivot point using the rear pin (51).
The movable claw (25) that rotates so that the front pin (52) of (2) descends from the cam surface (49) of the fixed base (42) is attached to the mounting surface (12) of the main body (10). Since the relation is set so that the locked state of (11) can be released, the problem of the prior art described at the beginning can be drastically solved, and the attachment (11) to the main body (10) can be solved. Although the disengagement operation of (1) can be performed lightly and conveniently, there is an effect that a stable and firm locking state of the accessory (11) can be obtained, and the versatility is excellent.

[Brief description of the drawings]

FIG. 1 is a partially cutaway sectional view of a lighting apparatus to which a latch mechanism according to the present invention is applied.

FIG. 2 is a plan view extracting and showing the lighting fixture main body.

FIG. 3 is an enlarged plan view of a part of FIG. 2;

FIG. 4 is a bottom view of the lighting fixture with the lamp shade removed.

FIG. 5 is a partially cutaway sectional view showing a lamp shade extracted.

FIG. 6 is a side view illustrating a movable claw extracted from a latch mechanism.

FIG. 7 is a bottom view of FIG. 6;

FIG. 8 is a plan view of FIG. 6;

FIG. 9 is a rear view of FIG. 6;

FIG. 10 is a sectional view taken along line 10-10 of FIG. 9;

FIG. 11 is a plan view showing an attached state of a fixing claw.

FIG. 12 is a sectional view taken along line 12-12 of FIG. 11;

FIG. 13 is a plan view showing a mounted state of a movable claw corresponding to FIG. 11;

FIG. 14 is a sectional view taken along line 14-14 of FIG.

FIG. 15 is a sectional view taken along line 15-15 of FIG. 13;

16 is a sectional view taken along line 16-16 of FIG.

FIG. 17 is a sectional view taken along line 17-17 of FIG. 15;

FIG. 18 is a side sectional view showing the rotating state of the movable claw corresponding to FIG.

FIG. 19 is a plan view showing a movable arm of the latch mechanism extracted therefrom.

FIG. 20 is a side view of FIG. 19;

FIG. 21 is a front view of FIG. 19;

FIG. 22 is a plan view extracting and showing a fixed base of the latch mechanism.

FIG. 23 is a side view of FIG. 22.

FIG. 24 is a front view of FIG. 22.

FIG. 25 is a sectional view taken along line 25-25 of FIG. 22;

FIG. 26 is a plan view extracting and showing a spring retainer.

FIG. 27 is a front view of FIG. 26;

FIG. 28 is a sectional view taken along line 28-28 of FIG. 27;

FIG. 29 is an explanatory diagram showing an operation process of the latch mechanism.

FIG. 30 is a side sectional view showing another example of use corresponding to FIG. 12;

FIG. 31 is a schematic perspective view of the present invention applied to another lighting fixture.

FIG. 32 is a schematic perspective view of the present invention applied to mounting of a signboard, a forehead, and the like.

FIG. 33 is a schematic perspective view of the present invention applied to pole mounting.

FIG. 34 is a schematic front view of the present invention applied to a roof carrier of an automobile.

FIG. 35 is a side sectional view showing a conventional technique.

[Explanation of symbols]

 (10) ・ Main body (lighting fixture main body) (11) ・ Accessory (lamp shade) (12) ・ Accessory mounting surface (24) ・ Fixed claw (25) ・ Movable claw (28) ・ Mounting block (32) -Movable arm (33)-Side wall (39)-Conductive hole for movable arm (42)-Fixed base (48)-Side wall (48f)-Front side wall piece (48r)-Rear side wall piece (49)・ Cam surface (50) ・ Radinal pin advance / retreat guide slot (51) ・ Rear pin (52) ・ Front pin (53) ・ Coiled coil spring (54) ・ Spring retainer (A) ・ Latch mechanism (G) ・Guide groove for lowering front pin

Claims (1)

(57) [Claims] 1. A main body (1) having a pair of parallel movable arm conduction holes (39) formed in an attachment mounting surface (12).
0) and a movable claw (25) for engaging and disengaging the attachment (11) from one direction to the mounting surface (12) of the main body (10).
Similarly, the positional relationship between the two conduction holes (39) opened in the mounting surface (12) of the main body (10) is as follows.
A fixed base (42) which is integrally erected in the other direction from the mounting surface (12) of the main body (10), and a mounting surface (1) of the main body (10) from the movable claw (25).
A movable arm (32) which is integrally extended through a pair of conduction holes (39) opened in 2) so as to sandwich the fixed base (42); The side wall (48) is divided into a pair of front and rear parts, and the top edges of both front side wall pieces (48f) are formed on the cam surface (49) inclined backward and downward, while the remaining rear side wall pieces (48r) are formed. ), An elongated elongate guide pin (50) for the rear pin is opened in the front-rear direction, and the rear pin (51) penetrates and crosses the fixed pin base (42). ,
The movable arm (32) of the movable claw (25) is pivotally connected to the fixed base (42) so as to be able to move forward and backward and rotate in the front-rear direction, and the cam surface (49) of the fixed base (42). ), The front pin (52) is passed through the movable arm (32) of the movable claw (25) in parallel with the rear pin (51), and the front pin (52) is moved to the above position. With the spiral coil spring (53) installed on the fixed base (42),
The movable claw (25) is constantly pressed and urged against the cam surface (49) so that the rear pin (51) of the movable arm (32) is moved forward and backward by the guide hole (5) of the fixed base (42).
When the push operation is performed in the forward direction along 0),
Using the rear pin (51) as a pivot point, the movable arm (3
The movable claw (25) that rotates so that the front pin (52) of 2) rides on the cam surface (49) of the fixed base (42).
Thereby, the accessory (11) is kept in a locked state on the mounting surface (12) of the main body (10), and the movable claw (25) is also fixed by the rear pin (51) of the movable arm (32). When the pull-out operation is performed in the retreating direction along the advance / retreat guide slot (50) of the base (42), the front pin (52) of the movable arm (32) is fixed with the rear pin (51) also as a pivot point. (42)
The mounting surface (12) of the main body (10) is provided by the movable claw (25) that rotates so as to descend from the cam surface (49).
A latch mechanism which is set so as to be able to release a locked state of the accessory (11) with respect to the latch mechanism.