JP2591605Y2 - knife - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a dispensing knife for sliding a blade plate into and out of a holder.

[0002]

2. Description of the Related Art Conventionally, there has been used a knife in which a straight blade plate is slidably housed in a sheath-like holder, and a blade edge is protruded and retracted from one end of the holder. When the knife is used, when a strong pressing force or traction force is applied to the blade edge, the blade plate is pushed into the holder or pulled out, making it difficult to use,
There was also a risk of injury to the finger. So before, the applicant
We have proposed a knife that allows the blade plate to protrude from the holder by an arbitrary length and clamps the blade plate in this state.
No. -28160).

As shown in FIGS. 5 to 8, a blade (2) and a slider (3) detachably connected to the blade (2) slide in a guide groove (11) of a holder (1). The projection (4) provided at the tip of the bullet (42) provided on the slider (3)
1) is disengaged from the recess (13) formed in the holder (1), and the blade plate
Perform clamp and release of (2). slider
A cam plate (8) is provided in (3) so as to be slidable in the sliding direction of the slider, and a pair of springs (5) (5) is provided between both ends of the cam plate (8) and the inner wall of the slider (3). ) Is interposed, and escape of the spring (5) is prevented by a cover plate (9) fixed to the slider (3). A ridge (82) is formed at the center of the lower surface of the cam plate (8), and valleys (83) and (84) are formed on both sides of the ridge (82), and the ridges (82) and the valleys (83) and (84) are formed. The engagement projection (41) of the bullet (42) is located on the slide transition path.

The cam plate (8) penetrates through a horizontally long hole (91) formed in the cover plate (9) in a state where there is a margin, and is hooked outward.
(81) is protruded. When the finger hook (81) is slid in the blade plate extending direction, the engaging projection (41) is fitted to the valley (8) of the cam plate (8).
3) corresponds to the engagement protrusion from the recess (13) of the holder (1).
(41) is allowed to escape, whereby the slider (3) and the blade plate (2) slide in the extending direction. When the blade plate (2) protrudes from the holder (1) by a desired length, the finger hook (81) is released.

A cam plate that slides integrally with the finger hook (81)
The peak (82) of (8) pushes the engagement protrusion (41), and the engagement protrusion (41)
Is engaged with the recess (13) of the holder (1) to clamp the blade plate (2). This allows the holder to be used while the knife is in use.
The blade plate (2) does not come off or retract from (1).
When the finger hook (81) is slid in the retraction direction of the blade plate (2), the pressing of the engagement protrusion (41) by the cam plate (8) is released, and the slider (3) and the blade plate (2) slide. Then, the blade plate (2) can be stored in the holder (1).

[0006]

In the knife with the clamping function, a thin shaft portion (85) is formed at both ends of a cam plate (8), and an end of a spring (5) is fitted to the thin shaft portion. While holding (5), the springs (5) and (5) are fitted to both ends of the cam plate (8),
(5) In a state in which (5) is compressed, it must be assembled into the slider body (4). At the time of assembling, the spring (5) is easily dislodged from the cam plate (8) and has a problem in assembly workability. Was.

In order to prevent the spring (5) from bending out and jumping out when one of the springs (5) is compressed by sliding the cam plate (8), a cover plate (9) is attached. I have to do it. Further, since the finger hook (81) is made to protrude from the elongated hole (91) formed in the cover plate (9), the finger hook (81) cannot be increased, and the operability is poor. The present invention facilitates incorporation of the spring (5) by accommodating the two springs (5) and (5) in independent spring accommodating chambers (43) and (43).
The functions of the conventional lid plate (9), finger hook (81) and cam plate (8)
In the present invention, it is realized by only one slider presser (6),
The purpose of the present invention is to provide a knife that can reduce the number of parts and simplify the configuration.

[0008]

Means for Solving the Problems The knife of the present invention is a holder
(1) Blade plate (2) and slider (3) connected to the blade plate
Is slidably provided, and the projecting piece (42) provided on the slider (3) is engaged with the recess (13) formed in the holder (1), and slidably provided on the slider (3). The cam (62) restricts the movement of the bullet (42), and the slider
In the knife for holding or releasing the holding of the blade (3) and the blade plate (2) in a fixed position, the slider (3) is a slider body.
(4) and a slider holder (6) mounted on the main body (4) so as to be slidable in the sliding direction of the main body. The slider body (4) has a side surface on the slider holder (6) mounting side. Open two independent spring chambers (4
3) (43) are formed at both ends in the sliding direction, and openings (44) and (44) are opened on the opposing surfaces of the spring housing chambers (43) and (43), and both spring housing chambers (43) and (43) The springs (5) and (5) are accommodated therein, and the slider presser (6) is provided with two spring accommodation chambers (43) and (4) of the slider body (4).
While covering 3), the cam (62) protruding from the back surface is located between both spring storage chambers (43) and (43), and both ends of the cam (62) are connected to the spring storage chambers (43) and (43). And the cam surface is opposed to the engaging projection (41) at the tip of the resilient piece (42).

[0009]

[Operation and Effect] Since the springs (5) are housed one by one in the spring housing chamber (43), the work of compressing the spring (5) and housing the spring (5) in the spring housing chamber (43) is the same as the conventional one. Workability is greatly improved as compared with the operation of fitting the two springs (5) and (5) to both ends of the cam plate (8) and fitting the springs (5) to the slider body (4) in a compressed state. A slider holder (6) is slidably mounted on the slider body (4), and a cam (62) for controlling the movement of the engaging projection (41) is provided on the back surface of the slider holder (6). The functions of the plate (9), the finger hook (81) and the cam plate (8) can be satisfied by one slider holder (6), the number of parts can be reduced, and the configuration can be simplified.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS As shown in FIG. 1, a guide groove (11) is formed on one side surface of a sheath-shaped holder (1). A slider (3) detachably connected to the blade plate (2) is slidably fitted, and a stopper cap (7) is attached to an end of the guide groove (11) on the slider (3) side. I have. One opening edge of the groove of the holder (1) has a recess (13) for positioning the feeding length of the blade plate (2).
(13) are formed at equal intervals. The blade plate (2) has an opening (21) for connecting the slider (3) at the inner end.

The slider (3) is a slider body (4)
And a slider presser (6) fitted slidably in the sliding direction with respect to the slider body (4). Slider body (4) has guide groove (11)
Projecting on a rectangular plate (40) that fits in the back of the guide groove (11)
And a block (47) that fits into the narrow opening of. Plate (4
On the back of (0), a short protrusion (31) corresponding to the thickness of the blade plate (2)
The projection (31) is fitted in the hole (21) of the blade plate (2) to connect the blade plate (2) and the slider body (4).

At both ends of the block (47), independent spring accommodating chambers (43) and (43) are opened apart from each other.
3) (43) has an open side surface on the mounting side of the slider presser (6), and a tip of a cam (62) described later is provided at the center of the opposing surfaces of both spring storage chambers (43) and (43). An opening (44) for fitting is formed. Below one spring accommodating chamber (43), a resilient piece (42) that can be bent in a vertical plane is formed integrally with the slider body (4), and the resilient piece (42) is attached to the slider body (4). The free end is extended in the sliding direction and has a free end located below between the two spring accommodating chambers (43), (43). 41) is formed. The springs (5) and (5) are slightly compressed in the spring storage chambers (43) and (43). Grooves (49) (49) on the upper and lower surfaces of the block (47) of the slider body (4) in the sliding direction of the slider body (4)
Has been established.

The slider retainer (6) is formed of a synthetic resin in a horizontally long plate shape, and is formed by projecting ridges (66) formed over the entire length from the upper and lower edges of the surface to the block (47) of the slider body (4). It is slidably engaged with and attached to grooves (49) (49) formed on the upper and lower surfaces. The slider presser (6) is attached by pressing the slider presser (6) against the side surface of the block (47), and by elastically deforming the resin, pushing between the protrusions (66) and (66) to open the protrusions (66). Into the groove (49).

A plate cam (62) for restricting the movement of the elastic plate pressing piece (48) protrudes substantially at the center of the rear surface of the slider presser (6). When the slider presser (6) is fitted to the slider body (4) and assembled, the cam (62) is attached to both spring storage chambers (43).
(43), and both ends are formed in a flat body which can enter the opening (44) of the spring accommodating chamber (43), and the lower surfaces of both ends of the flat body have valleys (64) and (65). The lower surface between the valleys (64) and (65) is a ridge (63). When the cam (62) is in the neutral position, both ends are located slightly before the opening (44) of the spring accommodating chamber (43), and the peak (63) presses the free end of the bullet (42). The engaging projection (41) can be cut into the recess (13) of the holder (1) to clamp the holder (1) and the blade plate (2). Slider foot
When (6) is slid to the right or left, the cam (62)
Presses the spring (5) on the slide side, the valley surface of the cam (62) corresponds to the free end of the bullet (42), and returns the bullet (42) to its original shape. Is released from the recess (13) of the holder (1), and the clamp of the holder (1) and the blade plate (2) can be released.

In the block (47) of the slider body (4),
On the side opposite to the blade plate feeding side, a retaining piece (48) for preventing the retaining cap (7) from coming off is protruded. As shown in FIG.
The retaining cap (7) is formed of a synthetic resin in a shape to close the base end side opening of the holder (1), and an elastic plate (7) fitted in the guide groove (11) of the holder (1) at the center of the inner end. A projection (72) formed on the elastic plate (71) is fitted in an engagement hole (12) formed in the groove bottom of the holder (1). When the slider (3) is retracted, the elastic plate pressing piece (4) of the slider (3)
8) presses the retaining cap (7) in the escape direction, and at the same time, the elastic plate pressing piece (48) presses the elastic plate (7) of the retaining cap (7).
1), the elastic plate (71) is elastically deformed,
The escape of 2) from the engagement hole (12) is prevented. Thereby, it is possible to reliably prevent the retaining cap (7) from coming off the slider (3).

When the slider presser (6) is slid in the direction in which the blade plate (2) is extended, the cam (6) comes into contact with the engaging projection (41).
The valley (65) of (2) correspondingly allows the upward movement of the bullet (42), that is, the escape of the engaging projection (41) from the recess (13) of the holder (1),
Thereby, the slider (3) and the blade plate (2) slide in the feeding direction. When the blade plate (2) projects a desired length from the holder (1), release the slider presser (6). The ridge (63) of the cam (62) that slides together with the slider holder (6) presses the engagement protrusion (41), and the engagement protrusion (41) is attached to the holder.
The blade plate (2) is clamped by engaging with the recess (13) of (1). This prevents the blade plate (2) from slipping out of the holder (1) or retracting during use of the knife.

Slider presser in the direction of retraction of blade plate (2)
When (6) is slid, the engaging projections (4
The pressing on 1) is released, and the slider 3 and the blade plate 2 are slid so that the blade plate 2 can be stored in the holder 1. The knife of the present invention has a spring accommodation chamber for each spring (5).
(43), two springs (5) (5)
Is fitted to both ends of the cam plate (8) and the slider body is compressed.
The assembly workability is greatly improved as compared with the work of fitting in (4). Also, the slider holder (6) is slidably mounted on the slider body (4), and the cam (62) for controlling the movement of the bullet (42) is provided on the back of the slider holder (6) to reduce the number of parts. Thus, the configuration can be simplified. The present invention is not limited to the configuration of the above embodiment, and various modifications can be made within the scope described in the claims for utility model registration.

[Brief description of the drawings]

FIG. 1 is an explanatory diagram of a blade plate clamping state of a knife.

FIG. 2 is an explanatory diagram of a blade plate clamp release state of a knife.

FIG. 3 is an exploded perspective view of a slider body and a slider presser.

FIG. 4 is an explanatory view of a clamping operation of the retaining cap.

FIG. 5 is a front view of a conventional knife.

FIG. 6 is an explanatory diagram of a blade plate clamping state of the above.

FIG. 7 is an explanatory view of a blade plate clamp release state of the above.

FIG. 8 is a sectional view taken along line AA of FIG.

[Explanation of Signs] (1) Holder (2) Blade plate (3) Slider (4) Slider body (41) Engagement protrusion (42) Bullet (5) Spring (6) Slider holder (62) Cam

Claims (1)

(57) [Scope of request for utility model registration] 1. A blade (2) and a slider (3) connected to the blade plate are slidably provided in a holder (1), and a bullet with an engaging projection (41) is provided on the slider (3). (42), a cam (1) is provided with a recess (13) for engaging and disengaging the engaging projection (41), and a cam slidably mounted on the slider (3).
The movement of the bullet (42) is regulated by (62) and the slider (3)
The slider (3) is slidable on the slider body (4) and the body (4) in the sliding direction of the body in a knife for holding or releasing the blade plate (2) at a fixed position or in a fixed position. The slider body (4) has two independent spring accommodating chambers (43) and (4) each having an open side surface on the side where the slider presser (6) is mounted.
3) are formed at both ends in the sliding direction, and the spring housing chambers (4
3) Open the openings (44) and (44) on the opposite surface of (43),
(43) Store the springs (5) and (5) in (43) and hold down the slider.
(6) is the two spring storage chambers (43) and (43) of the slider body (4)
And both ends of the cam (62) protruding from the rear surface thereof are located between the spring housing chambers (43) and (43), and both ends of the cam (62) are held in the spring housing chambers (43) and (43). ) So that they can penetrate into the openings (44) and (44), and the ridges (62) and valleys of the cam (62) face the engagement protrusions (41) on the bullets (42). When the ridge (62) of the cam (62) presses the engaging projection (41) by the slide of the presser (6), the engaging projection (41) is pressed into the recess (13) of the holder (1).
When the valley of the cam (62) faces the engagement projection (41), the pressing on the elastic piece (42) is released and the engagement projection (41) and the recess (1) are released.
3) Knife disengaged.