TWM587587U - Utility knife - Google Patents

Abstract

This creation relates to a tool knife, which includes: a first housing provided with a pivot shaft having an axis; a second housing rotatably pivoted to the pivot shaft and provided with a first latching portion ; A knife seat is movably accommodated between the first casing and the second casing, and can be operated and moved externally; a locking mechanism is inserted through the second casing and is not opposite to the pivot Rotate, can slide axially between a locked position and a released position along the pivot axis and can rotate about the axis, including a pressing end that can be moved on the external operating shaft and a snapping end that is linked with the pressing end, The card abutting end is provided with a second card abutting portion; wherein one of the first card abutting portion and the second card abutting portion is provided with at least one card slot, and the other is provided with at least one card that can be connected with the at least one card. The slot is releasably engaged with a latching protrusion. One of the at least one latching groove and the at least one latching protrusion includes a first inclined surface inclined with respect to the axis, and the other includes a latched against the first inclined surface. Against the top; wherein, when the locking mechanism is in the locked position and the at least one latching projection is in phase with the at least one latching slot The second casing cannot rotate relative to the first casing; when the locking mechanism is in the release position, the at least one latching projection and the at least one slot are separated from each other, and the second casing can be put around the latching. The mechanism rotates relative to the first casing.

Description

Utility knife

This creation is about a utility knife.

A general tool knife includes a shell, a knife seat slidably disposed in the shell, and a blade mounted on the knife seat. The blade of a general utility knife is trapezoidal and each side has a sharp blade. After one of the blades is passivated or damaged, the blade is turned to use the other blade, or the blade is replaced.

However, the tool knife is sandwiched between the two housings through the screw lock relative to the two housings, such as TWI309197. Therefore, when the blade is to be reversed or replaced, the two shells must be relatively separated, and its disassembly and replacement are extremely difficult.

Therefore, it is necessary to provide a novel and progressive tool knife to solve the above problems.

The main purpose of this creation is to provide a utility knife that can quickly and safely change the blade.

In order to achieve the above object, the present invention provides a tool knife, including: a first housing provided with a pivot shaft having an axis; a second housing rotatably pivoted to the pivot shaft and provided with a A first snap-in portion; a knife seat movably accommodated between the first casing and the second casing, and can be operated and moved externally; a locking mechanism penetrating the second casing and Does not rotate relative to the pivot axis, can be axially slid between a locked position and a released position along the pivot axis and can be rotated about the axis, including a pressing end that can be moved on an external operating shaft and a linkage with the pressing end A card abutting end, the card abutting end is provided with a second card abutting portion, wherein one of the first card abutting portion and the second card abutting portion is provided with at least one card slot and the other is provided with at least one A latching projection releasably engaged with the at least one latching slot, one of the at least one latching slot and the at least one latching projection includes a first inclined surface inclined with respect to the axis, and the other includes a latching against The first inclined surface is against the top; wherein when the locking mechanism is located in the locked position and the at least one latch is convex The at least one card slot is engaged with each other, and the second casing cannot rotate relative to the first case. When the locking mechanism is in the release position, the at least one card projection and the at least one card slot are disengaged from each other, and the second The casing is rotatable relative to the first casing about the locking mechanism.

The following is an example to illustrate the possible implementation of this creation, but it is not intended to limit the scope of protection of this creation.

Please refer to FIGS. 1 to 14, which show a preferred embodiment of the present invention. The tool knife 1 of the present invention includes a first case 10, a second case 20, a knife seat 30 and a locking mechanism 40.

The first housing is provided with a pivot shaft 11, and the pivot shaft has an axis 111. The second casing is rotatably pivoted to the pivot and is provided with a first latching portion 21. The tool holder is movably accommodated between the first casing and the second casing, and the tool holder can be operated and moved externally. The locking mechanism is threaded through the second housing and does not rotate with respect to the pivot axis. The locking mechanism is preferably coaxial with the pivot axis, and the locking mechanism can be axially slid in a locked position along the pivot axis ( 7 and 12) and a release position (FIG. 13) and rotatable around the axis, the locking mechanism includes a pressing end 41 that can be moved on an external operating shaft and a latching end that is linked to the pressing end 42. The card abutting end is provided with a second card abutting portion 421. Wherein, one of the first card-receiving portion and the second card-receiving portion is provided with at least one card slot 211 and the other is provided with at least one card protrusion 422 releasably engaged with the at least one card slot. One of the at least one card slot and the at least one card protrusion includes a first inclined surface 423 inclined with respect to the axis, and the other includes a contact top portion 212 that is pressed against the first inclined surface, and can stably click Shake, but the card slot and the card protrusion can also be set to have no inclined surface. Wherein, when the locking mechanism is in the locked position and the at least one latching projection is engaged with the at least one slot, the second casing cannot rotate relative to the first casing; when the locking mechanism is in the released position The at least one latching projection and the at least one latching slot are separated from each other, and the second casing can rotate relative to the first casing about the locking mechanism (FIG. 5 and FIG. 13). Thereby, the blade 100 can be replaced quickly and safely.

One of the pressing end and the card abutting end is provided with at least one card hole 411, and the other is provided with at least one card arm 424 with the plurality of card hole latches. Preferably, the second housing further includes at least one guide groove 213 extending around the axis, and the at least one clamping arm is rotatably passed through the at least one guide groove. Each of the guide grooves includes a wide section 214 that widens radially outward, which is convenient for the arm to pass through. In this embodiment, two pressing holes are provided on the peripheral wall of the pressing end, two pressing arms are provided on the pressing abutting ends, a hook portion 425 is provided on the end of each pressing arm, and two second holes are provided on the second housing. Guide grooves, each of the card arms passing through one of the guide grooves is hooked into the card hole with the hook portion (FIG. 6 and FIG. 8). The second casing can be stably and smoothly rotated around the two clamping arms by the two guide grooves.

In this embodiment, the second housing is provided with the at least one card protrusion, and the card abutting end is provided with the at least one card slot. The at least one card protrusion includes a plurality of ribs 426 extending toward the at least one card. The groove includes a plurality of grooves 215 extending in a direction and releasably engaging with the plurality of ribs (of course, it can also be configured as a bayonet and a plurality of grooves) to increase the bayonet effect and multiple sections of positioning. The abutting top includes a second inclined surface 216 that can be engaged with the first inclined surface. The inclination of the first inclined surface and the second inclined surface with respect to the axis is substantially the same. The depth of the card slot is greater than the height of the card convex. (FIG. 7) However, the inclination of the first inclined surface and the second inclined surface with respect to the axis may be different, so as to ensure that the first inclined surface and the second inclined surface are stable against being shaken. The locking mechanism further includes a set of elastic elements 43 disposed on the pivot shaft and resiliently abutting between the first housing and the card abutting end, so as to ensure that the abutting top is indeed stably abutted against the first inclined surface.

One of the first shell and the second shell is provided with at least one spring clip 50, and the other is provided with at least one lock recess 51 which can be releasably positioned with the at least one spring clip. One of the first casing and the second casing further includes at least one through hole 52 for accommodating the at least one spring clip, and a cover member 53 covering the at least one through hole. In this embodiment, the first casing is provided with the through hole, and one of the at least one elastic member 54 and an elastic member 55 can be easily assembled in the through hole, and the elastic member is simply enclosed by the cover member. The clip (Figure 14) does not need to shrink the through hole. The second housing further includes a channel 22, and the tool holder is provided with a restricting member 31 (FIG. 10 and FIG. 11) extending toward the second housing and accessible from the channel. The tool holder can be opposite to the first housing. The housing moves between a knife-out position and a knife-retraction position; when the knife seat is in the knife-retraction position (see Figure 10), the restricting member moves out of the channel and rotates in one of the second shell directions The upper housing does not interfere with the second housing, and when the locking mechanism is located in the release position, the second housing can rotate relative to the first housing around the locking mechanism; When the position (as shown in FIG. 11) moves, the restricting member moves into the channel, and the second casing cannot rotate relative to the first casing. This can ensure that the second casing can be rotated only when the blade is not exposed to prevent injury to the user.

Preferably, the first housing is further provided with a magnetically susceptible member 60 (FIGS. 2 and 3), and the magnetically susceptible member and the knife holder can be relatively magnetically attracted. At least one of the magnetically susceptible member and the knife holder is magnetic. For example, the magnetically susceptible member is a magnet. The knife holder includes a magnetic metal material. The magnetically susceptible member can magnetically attract the knife holder and remove the blade. The knife holder can be held on the first casing without being disengaged randomly. One of the first casing and the second casing may be provided with a blocking edge 12 capable of blocking the other, which can ensure the closed positions of the first casing and the second casing. The other of the first casing and the second casing is provided with a notch 23 or a shoulder (FIG. 2) capable of accommodating the retaining edge, making the appearance more flat.

1‧‧‧tool knife

10‧‧‧First case

11‧‧‧ Pivot

111‧‧‧ axis

12‧‧‧ rim

20‧‧‧Second shell

21‧‧‧First Card Arrival Department

211‧‧‧card slot

212‧‧‧arrived at the top

213‧‧‧Guide

214‧‧‧wide

215‧‧‧Trench

216‧‧‧Second bevel

22‧‧‧Slot

23‧‧‧ notch

30‧‧‧Blade holder

31‧‧‧Restrictions

40‧‧‧Locking mechanism

41‧‧‧Pressing end

411‧‧‧Kacon

42‧‧‧ card arrived

421‧‧‧Second Card Arrival Department

422‧‧‧Ka convex

423‧‧‧First slope

424‧‧‧ card arm

425‧‧‧ Hook Department

426‧‧‧ raised rib

43‧‧‧Elastic element

50‧‧‧shot card

51‧‧‧Kao

52‧‧‧Through Hole

53‧‧‧ cover

54‧‧‧Card

55‧‧‧elastic

60‧‧‧ Magnetic

100‧‧‧ Blade

FIG. 1 is a perspective view of a preferred embodiment of the creation.
FIG. 2 is an exploded view of a preferred embodiment of the creation.
FIG. 3 is another exploded view of a preferred embodiment of the present invention.
FIG. 4 is a side view of a preferred embodiment of the present invention.
FIG. 5 is a schematic diagram of operations of a preferred embodiment of the present invention.
FIG. 6 is a partial schematic diagram of a preferred embodiment of the creation.
FIG. 7 is a partial cross-sectional view of a preferred embodiment of the present invention.
FIG. 8 is another partial schematic diagram of a preferred embodiment of the creation.
9 to 11 are schematic diagrams showing the structural arrangement of a knife holder and a housing according to a preferred embodiment of the present invention.
12 to 13 are schematic cross-sectional views taken along AA in FIG. 4.
FIG. 14 is a schematic cross-sectional view taken along BB in FIG. 4.

Claims (10)

A utility knife including:
A first housing provided with a pivot axis, the pivot axis having an axis;
A second casing rotatably pivotally connected to the pivot shaft and provided with a first latching portion;
A knife seat is movably accommodated between the first casing and the second casing and can be operated and moved externally;
A locking mechanism is inserted through the second housing and does not rotate with respect to the pivot axis. The locking mechanism can slide along the pivot axis between a locked position and a released position and can rotate around the axis. A pressing end moved by the external operating shaft and a card abutting end linked with the pressing end, and the card abutting end is provided with a second card abutting portion;
Wherein, one of the first card abutting portion and the second card abutting portion is provided with at least one card slot, and the other is provided with at least one card projection which can be releasably engaged with the at least one card slot, One of the at least one latching groove and the at least one latching protrusion includes a first inclined surface inclined with respect to the axis, and the other includes an abutment against the top of the first inclined surface;
Wherein, when the locking mechanism is in the locked position and the at least one latching projection is engaged with the at least one slot, the second casing cannot rotate relative to the first casing; when the locking mechanism is in the released position The at least one latching projection and the at least one latching slot are separated from each other, and the second casing can rotate relative to the first casing about the locking mechanism. The utility knife according to claim 1, wherein one of the pressing end and the card abutting end is provided with at least one card hole, and the other is provided with at least one card arm with the plurality of card hole latches. The utility knife according to claim 2, wherein the second housing further includes at least one guide groove extending around the axis, and the at least one clamping arm is rotatably passed through the at least one guide groove. The utility knife according to claim 3, wherein each of the guide grooves includes a wide section that widens radially outward. The utility knife according to claim 1, wherein one of the first casing and the second casing is provided with at least one spring clip, and the other is provided with at least one spring clip that can be connected with the at least one spring clip. Release the positioning depression of the ground phase. The utility knife according to claim 5, wherein one of the first casing and the second casing further includes at least one through hole for receiving the at least one elastic member, and a cover for the at least one through hole. Cover pieces. The utility knife as claimed in claim 1, wherein the at least one latch includes a plurality of ribs extending in a direction, and the at least one latch includes a plurality of grooves extending in a direction and can be releasably engaged with the plurality of ribs. groove. The utility knife according to claim 1, wherein the first housing is further provided with a magnetically susceptible member, and the magnetically susceptible member and the tool holder can be relatively magnetically attracted. The utility knife according to any one of claims 1 to 8, wherein the abutting portion includes a second inclined surface which can be engaged with the first inclined surface. The utility knife according to any one of claims 1 to 8, wherein the second housing further comprises a channel, and the tool holder is provided with a restricting member extending toward the second housing and accessible to the channel, the The knife holder is movable relative to the first housing between a knife-out position and a knife-retracted position; when the knife holder is in the knife-retracted position, the restricting member moves out of the channel and is in one of the second shells The direction of rotation does not interfere with the second housing, and when the locking mechanism is located in the release position, the second housing can rotate relative to the first housing around the locking mechanism; when the knife seat faces the The knife-out position moves, the restriction moves into the channel, and the second casing cannot rotate relative to the first casing.