JP2503675B2 - Punch lock member - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present application relates to a lock member that locks an operating member in a downward tilting state in a two-hole punch.

2. Description of the Related Art Conventionally, a ridge having a height that allows the intervention of a paper to be punched is provided at the rear of the left and right positions of the upper surface, and a hole for inserting a rod-shaped punching blade described later is provided at the front thereof. And set up a stand,
A rear part is fixed to the ridges on the left and right to form a paper intervention part between the front part and the upper surface of the stand, and a guide hole is formed on the bottom surface of the front part, and a punching blade body is formed on the guide hole. A pair of left and right support members each having a horizontal support piece having a support hole for supporting the upper portion and having a cross-section upward U-shaped in the front-rear direction, and arcuate guides provided at the front portions of the left and right side plates of the support members. A pair of left and right rod-shaped punching blades that are supported by a support pin that penetrates the hole and move up and down between the support hole, the guide hole, and the drilled hole, and a downward U-shaped connecting portion at the front left and right positions. An operating member in which the connecting portion is attached to the front portions of the left and right supporting members in a tiltable manner by a pivot pin, and both ends of the supporting pin are connected to the connecting portion; and a connecting portion of the operating member. A left member that is interposed between the left and right supporting members and elastically biases the operation member in a direction to always open it. A two-hole punch having a pair of springs is well known, and in the punch having such a structure, an operating member is provided so as to be convenient for storing the punch in a drawer or the like, or for transporting or packing the punch. Locked in the drilled state tilted against the biasing force of the spring,
A lock mechanism for configuring the punch in a flat shape is also known, and this lock mechanism penetrates the connecting portion of the operating member and the guide hole and the drilling blade provided in the front portion of the side plate of the supporting member, respectively. A support pin extending in the lateral direction is slidable in the axial direction, a neck portion having a large diameter is provided at one end thereof, and a large diameter engagement portion engaging with the neck portion is provided at a lower end portion of the guide hole. Forming a pore,
When not in use, with the operating member tilted against the biasing force of the spring, the support pin is slid in the axial direction to engage the neck portion with the engagement hole. It is configured to prevent upward movement and lock the operating member in the perforated state.

However, according to the above configuration, in the use state,
It is necessary to regulate the amount of movement of the support pin in the axial direction so that the neck part does not come off from the engagement hole and does not come off from the connecting part side plate of the operating member, and the restriction is performed by the connecting part side plate of the operating member. Since this connecting portion is connected to the supporting member in a state of having a backlash, the operating member is inadvertently locked by lateral movement of the operating member during use, or due to external vibration when not in use. There was an inconvenience that the lock mechanism was released.

Therefore, the present application provides an independent locking piece in order to solve the above-mentioned inconvenience.

Means for Solving the Problem In order to achieve the above-mentioned object, the present application allows the inner surface of one side plate of a supporting member in a perforator to be superposed, and the rear end of one side plate of the supporting member slides on the rear part thereof. It has a forward-facing U-shaped gripping part that is movably sandwiched, and the operating part of the punch is directed downward against the spring on the operating part that can reciprocate between the locked position and the unlocked position. When the operating piece is slid to the lock position while tilted to
A wedge that intervenes between a support piece of a support member having a support hole that supports the upper portion of the drilling blade and a support pin that penetrates the drilling blade and is connected to the operating member to maintain the tilted state of the operating member. And a locking projection that holds the unlocking position of the operating piece by locking a part of the support member when the wedge piece is released from the wedge by sliding the operating piece and the operating piece. In addition, in the above description, a forward U-shaped holding portion for slidably holding the rear end of one side plate of one of the support members provided at the rear end of the operation portion piece is provided. Instead, it is characterized in that it has a downward U-shaped gripping portion for slidably sandwiching one side plate upper edge portion of the support member on the upper portion of the operation portion piece. In the above structure, a knob piece is provided at the rear end of the operation section piece to facilitate the sliding operation of the operation section piece. As a means of providing the locking portion, a guide piece that slides on the upper surface of the support piece is provided on the operation portion piece, and a locking protrusion that locks with the front edge of the support piece at the unlocked position is provided at the tip of the guide piece. It is provided in
Further, it is desirable that the lock member is made of synthetic resin.

Function When the lock member of the present application is assembled to the punch, the operation protrusion is overlapped with the inner surface of one side plate of the support member and pushed forward, and the locking protrusion rides on the upper surface of the support. After the guide piece advances along the upper surface of the support piece in the ascended state, the locking projection is locked to the front edge of the support piece, the guide piece overlaps with the upper surface of the support piece, and is clamped. The parts are assembled by sandwiching the rear edge or the upper edge of the side plate of the support member.

However, in this state, the drilling is performed by tilting the operating member downward against the spring as in the conventional case.

When the punch is not used and is stored in a drawer or the like in a punched state, the gripping portion is pushed forward with the operating member tilted downward.

Then, the wedge piece intervenes between the support piece and the support pin to prevent upward movement of the support pin, and the operation member is held in a state of being tilted downward.

Examples Referring now to the drawings in detail, the perforator to which the locking member of the present application is applied is shown in FIGS.
(10) is a ridge (11) with a height that allows the intervention of the paper to be punched at the rear of the left and right positions of the upper surface, and a hole for inserting the punching blade (12) on the rod in the front part. An instrument stand with holes (13) respectively arranged, (14) is secured to the ridge (11) at its rear part by a fastener (15), and between the front part and the instrument stand (10). A support which forms an intervention part (16) of paper and has a guide hole (17) on the bottom surface of the front part and a support hole (18) for supporting the upper part of the punching blade (12) on the guide hole (17). A support member that is long in the front-rear direction and has a U-shaped cross-section that is provided horizontally by bending the piece (19), and (20) is an arc-shaped guide hole provided in the front part of the side plate of the support member (14) and the drilling blade Through hole (2
The support pin (23) inserted in 2) forms a downward U-shaped connecting portion (24) at the front left and right positions, and this connecting portion (24)
Is fitted to the front part of the support member (14), is tiltably attached by a pivot pin (25), and both ends of the support pin (20) are connected to the connecting part (24). , (26) are springs which are interposed between the connecting portion (24) of the operating member (23) and the supporting member (14) to elastically bias the operating member (23) in a direction in which the operating member (23) is always opened. ) Is a back cover fitted to the lower surface of the base (10).

The present application, in the perforator configured in this way, is an effective locking member, which is made of synthetic resin,
As shown in FIGS. 1 and 2, one side plate (1
4) ′ is overlapped with the inner surface and the lower edge is slidably in contact with the bottom surface of the flat operation part piece (1), and the rear end part of the side plate (14) ′ is sandwiched by a forward U-shaped holding part (2). ), And
A wedge piece (3) intervening between the support piece (19) and the support pin (20) in a state where the operating member (23) of the punch is tilted downward against the spring (26) in the front part. , A horizontal guide piece which overlaps and slides on the upper surface of the support piece (19), and which has a locking projection (4) at the front end that locks to the front edge of the support piece (19). (5) is provided.

When the lock member A configured as described above is assembled to the perforator, the operating portion piece (1) is pushed forward in a state where the operating portion piece (1) is superposed on the inner surface of one side plate (14) 'of the support member (14).
Then, the guide piece (5) advances along the upper surface of the support piece (19) with the engagement projection (4) riding on the upper surface of the support piece (19), and then the engagement projection ( 4) is locked to the front edge of the support piece (19), the guide piece (5) is superposed on the upper surface of the support piece (19), and
The sandwiching portion (2) sandwiches the rear end of the side plate (14) 'of the support member (14) and is assembled in the state shown in FIG.

However, in this state, the operating member (2
Drilling is performed by tilting 3) downwards against the spring (26).

When the perforator is not used and is stored in a drawer or the like in the perforated state, the holding part (2) is slid forward with the operating member (23) tilted downward.

Then, as shown in FIG. 7, the wedge piece (3) becomes the support piece (19).
Is interposed between the support pin (20) and the support pin (20) to prevent the support pin (20) from moving upward, and the operating member (23) is held in a state of being tilted downward. If necessary, the gripping portion (2) is provided with a knob portion so as to facilitate the sliding operation.

In FIGS. 3 and 4, the holding part (6) has the side plate (1) of the support member (14).
4) ′ shows another embodiment in the case of being provided in a downward U shape on the upper part of the operation part piece (1) so as to sandwich the upper edge part, and the rear end of the operation part piece (1) is shown. , And has a knob portion (7) extending in an orthogonal direction.

EFFECTS OF THE INVENTION Since the present application is configured as described above, the structure is extremely simple and convenient to handle, and smooth operation of the operating part and prevention of removal of the operating part in the unlocked position can be achieved. Further, it has an advantage that it can be immediately used for a ready-made perforator without requiring any change.

[Brief description of drawings]

The drawings show the embodiments of the present application. FIG. 1 is a side view, FIG. 2 is a top view, FIGS. 3 and 4 are side views and top views of other embodiments, and FIG. FIG. 6 is a partially cutaway top view of the perforator showing FIG. 6, FIG. 6 is a sectional view taken along line I-I of FIG. 5,
FIG. 7 is a vertical sectional view in a locked state. In the figure, (1) is an operation section piece, (2) and (6) are clamping sections,
(3) is a wedge piece, (4) is a locking projection, (5) is a guide piece,
(10) is a base, (12) is a piercing blade, (14) is a support member,
(19) is a support piece, (20) is a support pin, (23) is an operating member,
(25) is a pivot pin, and (26) is a spring.

Claims (5)

(57) [Claims] 1. A front U-shaped holding portion which overlaps with an inner surface of one side plate of a supporting member in a punch and has a rear end thereof which slidably holds a rear end of one side plate of the supporting member. The operating member that can slide back and forth between the locked position and the unlocked position, with the operating member of the perforator tilted downward against the spring, move the operating member to the locked position. When slid, the tilting of the operating member is performed by intervening between a supporting piece of a supporting member having a supporting hole for supporting the upper part of the drilling blade and a support pin penetrating the drilling blade and connected to the operating member. When the wedge piece that holds the state and the operation section piece are slid to the unlocked position to release the intervention of the wedge piece, the wedge piece is locked with a part of the support member to hold the unlocked position of the operation section piece. A locking member for a perforator. 2. A downward U-shaped holding portion that overlaps with an inner surface of one side plate of a supporting member in a punch and has an upper edge of the side plate of the supporting member slidably holding the upper edge of the side plate. The operating member that can slide back and forth between the locked position and the unlocked position, with the operating member of the perforator tilted downward against the spring, move the operating member to the locked position. When slid, the tilting of the operating member is performed by intervening between a supporting piece of a supporting member having a supporting hole for supporting the upper part of the drilling blade and a support pin penetrating the drilling blade and connected to the operating member. When the wedge piece that holds the state and the operation section piece are slid to the unlocked position to release the intervention of the wedge piece, the wedge piece is locked with a part of the support member to hold the unlocked position of the operation section piece. A locking member for a perforator. 3. A lock member for a perforator according to claim 1, wherein a knob piece is provided at a rear end of the operation portion piece. 4. A guide piece that slides on the upper surface of the support piece is provided on the operation portion piece, and a locking projection portion that engages with the front edge of the support piece at the unlocked position is provided downward at the tip thereof. Claim 1, 2 or 3
The lock member for a punch according to the description. 5. The lock member for a perforator according to claim 1, 2, 3, or 4, wherein the lock member is formed of synthetic resin.