TW201501893A - Knife structure - Google Patents

Abstract

A knife structure comprises: a handle having a pivot slot and a socket communicated with each other, and two recesses disposed on both sides; a fastener capable of being swung in the pivot slot to have an engaging state and a release state, one end of the fastener having a hook portion; an elastic body located in the pivot slot to provide elasticity that enables the fastener to remain in the engaging state at normal time; two elastic arms disposed in a symmetrical manner in the two recesses, respectively, each elastic arm having one fixed end jointed to the handle and one resilient end elastically swung in the recess, the resilient end having a convex buckle that can be elastically retracted into the recess or projected from the recess; a blade including a blade body and one buckling member combined at one end of the blade body, wherein the buckling member can be inserted into the slot of the handle, and one side thereof has an engaging slot, such that the hook portion can be hooked in the engaging slot when the fastener is in the engaging state, and the hook portion may be detached from the engaging slot when the fastener is in the release state; a sheath having a first accommodating groove to accommodate one end portion of the handle, two buckling holes defined at two opposite sides of the first accommodating groove to allow the convex buckle of the two elastic arms to be embedded therein, and a second accommodating groove to accommodate the blade body.

Description

Tool structure

The invention relates to a technical field of a tool structure, in particular to a tool structure which has the advantages of more convenient and fast replacement of the blade, good blade structure strength, firm blade combination and safety.

A generally known tool structure, as shown in Taiwan Patent No. 00371917, is mainly provided with a fitting portion (11) at the front end of a shank (10), and a protrusion is provided on the side of the fitting portion (11). One of the inserts (12) is pivotally mounted on the fitting portion (11) by a rivet (13) having a fastening member (15) and then mating at the end of the cutting edge (20). The portion (22) is provided with one of the holes (23) identical to the shape of the insert (12). Thus, the butt portion (22) is placed on the side of the fitting portion (11), the insert (12) is embedded in the insert hole (23), and then the fastener (15) is lowered. The blade (20) is coupled to the shank (10) by swinging the buckle groove (14) to the opposite outer side surfaces of the fitting portion (11) and the abutting portion (22). On the contrary, when the fastener (15) is swung upward to move the buckle (14) away from the fitting portion (11) and the abutting portion (22), the blade (20) can be detached from the shank ( 10). Thereby, the purpose of replacing the blades (20) of different sizes, shapes and functions can be achieved.

However, the conventional tool structure is used in actual assembly and use. There are many disadvantages as follows:

1. The conventional tool uses the insert (12) of the fitting portion (11) to be inserted into the insert hole (23) of the mating portion (22), and then swings the fastener (15) downward. The buckle groove (14) is fastened on the opposite outer side surfaces of the fitting portion (11) and the mating portion (22) to achieve the purpose of connecting the blade edge (20) to the shank (10). Therefore, it is inconvenient and troublesome in the operation of replacing the blade (20).

2. The abutting portion (22) of the blade (20) of the conventional tool is provided with a through hole (23) penetrating the opposite sides for the insert (12) to be embedded, so the opposite edge (20) The structural strength of the abutting portion (22) is greatly weakened by the through hole (23), so that the abutting portion (22) can easily occur from the periphery of the through hole (23) when in use. The situation of the break.

3. The cutting edge (20) of the conventional cutter is only connected to the shank (10) by the buckle of the buckle (14) of the fastener (15), and the buckle groove (14) The three sides are connected in an open shape, so that when the blade (20) is subjected to a large torsional force or a lateral force, the opening of the buckle (14) is easily opened by the abutting portion (22). Therefore, the fastener (15) no longer has a clamping restriction on the fitting portion (11) and the abutting portion (22), so that the insert (12) can be easily separated from the through hole (23). Therefore, the blade (20) is prone to accidental disengagement from the shank (10) during use, and has a problem of poor bonding and poor safety.

4. If the conventional cutter is to be attached to the shank (10) without any shaking, the insertion hole (23) needs to be tightly and seamlessly sleeved on the insert (12). ), and want to machine a shape and the insert on the abutting portion (22) of the blade (20) (12) The holes (23) which are completely identical and can be sleevelessly placed on the insert (12) are very difficult, and the precision requirements thereof are also very high, so the relative system is greatly increased. the cost of.

The invention is mainly based on solving the conventional knowledge The blade structure is inconvenient to replace, the blade structure is inferior, the blade is less rigid, easy to fall off and the safety is poor.

The invention provides a tool knot The structure comprises a handle, a fastener, an elastic body, two elastic arms, a blade and a sheath. Wherein, one side of the shank has a pivot slot, and one end has a slot communicating with the pivot slot, and the opposite sides have two recesses symmetrical. The fastener is coupled to the pivot slot. The fastener has a pressing portion at one end and a hook portion at the other end, and the fastener can be swung in a buckled state by pressing or releasing the pressing portion. Release status. The elastic system is disposed in the pivot slot and provides an elastic force to cause the fastener to be in a buckled state when it is not normally pressed. The two elastic arms are respectively symmetrically disposed in the two grooves, and the elastic arm has a fixed end coupled with the shank and an elastic end that is elastically swingable in the groove. The elastic end has a buckle, and the two buckles can be retracted or protruded from the groove by pressing or releasing the two elastic arms. The blade body comprises a blade body and a fastening component, the blade body has a blade edge portion and a joint portion, the fastener component is combined with the joint portion of the blade body, and one side of the fastener component has a card slot. The fastener is inserted into the slot of the handle, so that the hook can be hooked in the slot when the fastener is in the buckled state to prevent the fastener from being detached from the slot, and When the fastener is in the released state The hook portion can be disengaged from the card slot to disengage the fastener from the slot. The scabbard has a first accommodating groove, two fastening holes and a second accommodating groove. The first accommodating groove is configured to receive the one end of the shank, and the two accommodating holes are located on opposite sides of the first accommodating groove for elastically engaging or disengaging the buckles of the two elastic arms, the second capacity The slotting system is in communication with the first receiving slot for receiving the blade body.

Tool structure provided by the present invention Only need to press the fastener to release the hook from the slot, the buckle can be extracted from the slot, and the blade is separated from the handle, and the fastener is only inserted into the fastener In the slot, and the hook portion of the fastener is hooked in the card slot, the blade can be fixedly coupled with the handle, so that the blade replacement operation is convenient and fast. Since the blade relies on the card slot on one side of the fastening member for hooking the hook portion of the fastener to achieve the purpose of bonding and fixing, the card slot does not weaken the structural strength of the fastener of the blade. In particular, after the fastener of the blade is inserted into the slot of the shank, it can only be moved axially, and the hook portion of the fastener is embedded in the slot to limit the fastener from being in the slot. Moving, such that when the blade is subjected to a large torsional force or lateral force, the fastener is limited by the handle of the structural strength, and the fastener cannot be pushed, so the fastener The hook portion can be firmly hooked in the card slot without pressing the pressing portion thereof, and the blade can be accidentally separated from the shank, so that the hook has the advantages of firm bonding and good safety. . In addition, the card slot for hooking the hook of the fastener is very simple on one side of the fastening member of the blade, and the precision requirement thereof is not too high, so it can be manufactured. Compared with the conventional structure, the production cost can be reduced much. Furthermore, the present invention can increase the safety of the use of the scabbard on the knives, and the embossing of the two elastic arms can be elastically embedded or disengaged from the two fastening holes of the scabbard. The purpose of combining or separating the scabbard with the shank is easily achieved, and thus the use of the upper lining has better convenience.

(10)‧‧‧Knife handle

(11) ‧‧‧ pivot slot

(12)‧‧‧Axis hole

(13) ‧‧‧ slots

(14) ‧‧‧Fixed holes

(15) ‧‧‧ Groove

(151)‧‧‧ first plane

(152) ‧‧‧ second plane

(16) ‧‧‧ convex

(20) ‧‧‧fasteners

(21) ‧‧‧ Pressing Department

(22) ‧‧‧Pivot

(23) ‧‧‧Hooks

(30)‧‧‧ Elastomers

(40) ‧‧‧ pivot

(50) ‧‧‧Boom arm

(51) ‧‧‧Combination holes

(52)‧‧‧First stop

(53)‧‧‧second stop

(54) ‧ ‧ ‧ top edge

(55) ‧ ‧ yoke

(60) ‧‧‧Fixed bolts

(70)‧‧‧blade

(71) ‧ ‧ ‧ body

(711) ‧ ‧ joints

(712)‧‧‧ Cutting edge

(72)‧‧‧Deductions

(721)‧‧‧ card slot

(722) ‧‧‧ Combination slot

(80)‧‧‧Scabbard

(81) ‧‧‧First accommodating slot

(82) ‧‧‧ buttonhole

(83)‧‧‧Second accommodating slot

(84) ‧‧‧Perforation

(85)‧‧‧ Clips

The first figure is a perspective exploded view of the present invention.

The second drawing is a schematic plan view of the shank of the present invention.

The third figure is a three-dimensional combination diagram of the present invention.

The fourth figure is a top plan view of the present invention.

The fifth figure is a schematic cross-sectional view of the B-B of the fourth figure.

The sixth drawing is a schematic view of the operation of the present invention.

The seventh drawing is a schematic side view of the invention.

The eighth figure is a schematic view of the C-C section of the seventh figure.

Figure 9 is a perspective exploded view of another embodiment of the present invention.

Figure 11 is a top plan view of another embodiment of the present invention.

The eleventh figure is a schematic cross-sectional view of the B-B of the tenth figure.

Figure 12 is a schematic view showing the state of use of the replacement blade of the present invention.

Referring to the first to fifth figures, the tool structure of the present invention includes a handle (10), a fastener (20), an elastic body (30), a pivot (40), Two elastic arms (50), two fixing bolts (60), a blade (70) and a sheath (80). among them:

The upper side of the shank (10) has a pivot groove (11), and the left and right sides have a shaft hole (12) penetrating to the pivot groove (11), and the front end surface of the shank (10) has a hinge groove (11) communicating with one of the slots (13), the shank (10) further has two fixing holes (14) extending through the upper and lower sides, and two opposite sides on the left and right sides and having two grooves corresponding to each other (15) The two fixing holes (14) respectively penetrate through the two grooves (15), and the end portion has a first plane (151) and a second plane (152) in the groove (15). And a convex portion (16).

The fastener (20) is disposed in the pivot slot (11), and the rear end of the fastener (20) has a pressing portion (21), and a central portion of the two sides has a pivot hole (22) ), the front end has a hook (23).

The elastic body (30) is a compression spring that is disposed in the pivot groove (11) and has an upper end that is placed on a lower side of the pressing portion (21) of the fastener (20).

The pivot (40) is disposed in the shaft hole (12) and the pivot hole (22), so that the fastener (20) is normally in the pivot slot by the elastic force of the elastic body (30). The middle swing is in a buckled state, and the fastener (20) can be swung in the pivoting groove (11) by pressing the pressing portion (21) to be in a released state.

The two elastic arms (50) are respectively symmetrically disposed in the two grooves (15), and the elastic arms (50) have a fixed end located at one of the rear end portions and an elastic end located at the front end portion. The fixed end has a coupling hole (51) extending through the upper and lower sides, and the two sides of the fixed end respectively have a corresponding one of the first and second planes (151) (152). a stop surface (52) and a second stop surface (53) on the elastic arm (50) One side has an abutting edge (54) for the protrusion (16) to bear, so that the elastic end can elastically swing in the groove (15), and the end of the elastic end has a buckle (55).

The two fixing bolts (60) are respectively disposed in the two fixing holes (14) and the two coupling holes (51) for fixing the fixed ends of the two elastic arms (50) to the two grooves ( In 15), it can cooperate with the structure of the convex portion (16) against the top edge (54) of the elastic arm (50), so that the two elastic arms (50) can be pressed or released. The elastic end of the elastic arm (50) elastically swings in the groove (15), so that the two buckles (55) can thus be retracted or protruded from the groove (15).

The blade (70) comprises a blade body (71) and a fastening member (72). The blade body (71) has a joint portion (711) and a blade portion (712), and the fastener member (72) One side has a slot (721), and one end of the mask has a coupling groove (722), and the fastening member (72) is inserted into the slot (13) of the handle (10), so that the When the fastener (20) is in the buckled state, the hook portion (23) can be hooked in the card slot (721) to prevent the fastening member (72) from being detached from the slot (13), and When the fastener (20) is in the released state, the hook portion (23) can be disengaged from the card slot (721) to disengage the fastening member (72) from the slot (13), the coupling slot (722) The joint portion (711) of the blade body (71) can be inserted and fixed.

The scabbard (80) has a first accommodating groove (81), two fastening holes (82), a second accommodating groove (83), a through hole (84) and a clip (85). An accommodating groove (81) is located at an end surface of the scabbard (80) for receiving a front end portion of the shank (10), and the two fastening holes (82) are located at the first accommodating groove (81) Two opposite arms are available for the two arms (50) The convex buckle (55) is elastically inserted or disengaged, and the second receiving groove (83) is disposed in the sheath (80) and communicates with the first receiving groove (81) for receiving the blade body (71) The through hole (84) is located on the other end surface of the scabbard (80) opposite to the first accommodating groove (81), and penetrates into the second accommodating groove (83) for The liquid in the scabbard (80) is discharged, and the clip (85) is disposed on one side of the scabbard (80) for elastically clamping on the user's belt for convenient carrying.

Referring to the fifth figure, it is pointed out that the elastic body (30) normally pushes the pressing portion (21) of the fastener (20) upward by the elastic force, so that the fastener (20) swings and buckles. The hook portion (23) is caused to be hooked in the slot (721) of the blade (70) for the purpose of bonding the blade (70) to the shank (10).

Referring to the sixth figure, it is pointed out that when the pressing portion (21) is pressed to swing the fastener (20) into a released state, the hook portion (23) will be disengaged from the slot of the blade (70) (721). So that the fastener (72) of the blade (70) can be withdrawn from the socket (13) of the shank (10), thereby achieving the knife (70) and the shank (10) The purpose of separation.

Referring to the seventh and eighth figures, it is pointed out that the two buckle holes (85) of the scabbard (80) can be elastically embedded in the two buckle holes (82) of the scabbard (80) by the two elastic arms (55). The scabbard (80) is sleeved on the blade body (71) and can be coupled and fixed to the shank (10). When the two elastic arms (50) are pressed inward, the two buckles (55) of the two elastic arms (50) can be disengaged from the two fastening holes (82) of the sheath (80). The scabbard (80) is easily separated from the shank (10) so that the blade (71) can be easily and quickly extracted from the scabbard (80).

Since the cutter structure of the present invention has the special structural design described above, it has the following advantages in assembly and practical use:

1. The present invention only needs to press the pressing portion (21) of the fastener (20) to release the hook portion (23) from the card slot (721), and the fastening member of the blade (70) can be easily obtained ( 72) being withdrawn from the socket (13) of the shank (10) so that the blade (70) is separated from the shank (10), and only the fastener of the blade (70) is required ( 72) inserting the slot (13), and then hooking the hook portion (23) of the fastener (20) in the card slot (721), thereby limiting the fastening member (72) to the insertion slot In the groove (13), the blade (70) is coupled and fixed to the shank (10), so that the replacement operation of the blade (70) can be more convenient and quick.

2. The blade (70) of the present invention relies on a card slot (721) on one side of the fastening member (72) for hooking the hook portion (23) of the fastener member (20) to achieve a combination and fixing to the knife. The purpose of the handle (10) is that the card slot (721) does not weaken the structural strength of the fastener (72) of the blade (70).

3. After the fastener (72) of the blade (70) of the present invention is inserted into the slot (13) of the shank (10), it can only move axially, and the hook of the fastener (20) (23) After being inserted into the card slot (721), the fastening member (72) can be restrained from moving axially in the slot (13), so when the blade (70) is subjected to a large torsion force or side When the force is applied, the fastening member (72) is restricted by the slot (13) of the shank (10) having a large structural strength, and does not push the fastener (20) to swing, so the fastener (20) The hook portion (23) is securely hooked in the card slot (721) without the pressing portion (21) being pressed, so that the blade (70) can be prevented from accidentally coming off the The case of the handle (10), It has the effect of strong bonding and good safety.

4. The fastening member (72) of the blade (70) of the present invention is required to process a card slot (721) for hooking the hook portion (23) of the fastener (20), and the precision thereof is excellent. The requirements are not too high, so the production can be relatively simple, and the relative cost can be reduced.

5. The present invention utilizes the sheath (80) to be sleeved on the blade body (71) to increase the safety of its use, and the convex buckle (55) of the two elastic arms (50) is elastically embedded or disengaged. In the two button holes (82) of the scabbard (80), the purpose of easily joining or separating the scabbard (80) from the shank (10) can be achieved, and the scabbard (80) can be easily used in use. Convenience.

Please refer to the ninth to eleventh drawings, which is another embodiment of the tool structure of the present invention, and the structure thereof is substantially the same as that of the above embodiment, and the difference lies in the lower part of the tool holder (10) of the present embodiment. The other side is provided with another pivoting groove (11), and the two pivoting grooves (11) of the upper and lower sides are symmetrically disposed and communicate with each other, and two of the two pivoting grooves (11) are symmetrically disposed respectively. a fastener (20), and the two fasteners (20) are also pivoted on the shank (10) by two pivots (40), and the two ends of the elastic body (30) are respectively respectively The inner side of the pressing portion (21) of the two fasteners (20) provides elastic force to fasten the two fastening members (20), and the upper and lower sides of the fastening member (72) of the blade (70) Two card slots (721) are symmetrically arranged, so that the two card slots (721) can be respectively hooked by the hook portions (23) of the two fasteners (20). Therefore, when the blade (70) is separated from the shank (10), the pressing portions (21) of the two fasteners (20) are simultaneously pressed, so that the accidental pressing can be prevented. The blade (70) easily separates the security mechanism, making it more secure Sex.

Referring to Fig. 12, it is pointed out that the tool structure of the present invention can include the blade (70) of a plurality of shapes, sizes and functions so that it can be arbitrarily replaced as needed. The blade (71) of the blade (70) can be set as a cutter, a saw blade, etc., and will not be further described herein.

(10)‧‧‧Knife handle

(11) ‧‧‧ pivot slot

(12)‧‧‧Axis hole

(13) ‧‧‧ slots

(14) ‧‧‧Fixed holes

(15) ‧‧‧ Groove

(20) ‧‧‧fasteners

(21) ‧‧‧ Pressing Department

(22) ‧‧‧Pivot

(23) ‧‧‧Hooks

(30)‧‧‧ Elastomers

(40) ‧‧‧ pivot

(50) ‧‧‧Boom arm

(51) ‧‧‧Combination holes

(52)‧‧‧First stop

(53)‧‧‧second stop

(54) ‧ ‧ ‧ top edge

(55) ‧ ‧ yoke

(60) ‧‧‧Fixed bolts

(70)‧‧‧blade

(71) ‧ ‧ ‧ body

(711) ‧ ‧ joints

(712)‧‧‧ Cutting edge

(72)‧‧‧Deductions

(721)‧‧‧ card slot

(722) ‧‧‧ Combination slot

(80)‧‧‧Scabbard

(81) ‧‧‧First accommodating slot

(82) ‧‧‧ buttonhole

(83)‧‧‧Second accommodating slot

(84) ‧‧‧Perforation

(85)‧‧‧ Clips

Claims (8)

A tool structure comprising: a shank having a pivot groove on one side, one end having a slot communicating with the pivot slot, and two opposite sides having two recesses symmetrical; a fastener coupled to the side In the pivot slot, the fastener has a pressing portion at one end and a hook portion at the other end, and the fastener can be swung into a buckled state and a released state by pressing or releasing the pressing portion; an elastic body Provided in the pivot slot, the elastic force is provided to make the fastener normally buckled when not pressed; the two elastic arms are respectively symmetrically disposed in the two grooves, and the elastic arm has a joint with the handle a fixed end and an elastic end that can elastically swing in the groove, the elastic end has a convex buckle, and the two convex buckles can be retracted or protruded from the groove by pressing or releasing the two elastic arms a blade comprising a blade body and a fastening component, the blade body having a blade portion and a joint portion, the fastener component being coupled with the joint portion of the blade body, and having a card on one side of the fastener component a slot, the fastener is insertable into a slot of the handle, so that the fastener is in the buckle shape The hook portion can be hooked in the card slot to prevent the fastener from being detached from the slot, and the hook portion can be disengaged from the card slot when the fastener is released, so that the buckle member can be The slot is detached; and the first sheathing slot has a first receiving slot, two fastening holes and a second receiving slot, wherein the first receiving slot is adapted to receive one end of the shank, and the two latching holes are located at The two opposite sides of the first receiving groove are inserted into the protruding hooks of the two elastic arms, and the second receiving groove is in communication with the first receiving groove for receiving the blade body. The tool structure of claim 1, further comprising a pivot and two fixing bolts, wherein the shank has a shaft hole and two fixing holes, the shaft hole is penetrated to the pivot slot, and the two fixing holes are respectively penetrated to The two recesses have a pivot hole extending through the opposite sides, and one end of the two elastic arms respectively have a coupling hole extending through the upper and lower sides, and the pivot shaft is disposed through the shaft hole and the pivot hole The two fixing bolts are respectively disposed in the two fixing holes and the two coupling holes. The tool structure of claim 2, wherein one end of the groove has a first plane, a second plane and a convex portion, and the fixed end of the elastic arm has a corresponding first and second planes A first stop surface and a second stop surface, and a side surface of the elastic arm has an abutting edge for the convex portion to be supported so that the elastic end can elastically swing in the groove. The tool structure according to claim 1 or 2, wherein an end surface of the fastening member of the blade has a coupling groove, and the coupling groove is engageable and fixedly coupled to the joint portion of the blade body. The tool structure of claim 1 or 2, wherein the scabbard has a perforation extending to the second accommodating groove on an end surface opposite to the first accommodating groove. The tool structure of claim 1 or 2, wherein one side of the scabbard has a clip for elastically snapping onto a user's belt. The tool structure of claim 1 or 2, wherein the other side of the shank is provided with another pivoting groove, and the two pivoting grooves are symmetrically disposed on opposite sides of the shank and communicate with each other. Two fastening members are symmetrically disposed in the two pivoting grooves, and the two fastening members are respectively pivoted on the shank by two pivots, and the elastic body is disposed between the pressing portions of the two fastening members. The elastic force can be provided to make the two fasteners buckle in a normal state, and the other side of the fastening member of the blade is provided with another card slot, so that the The two card slots are symmetrically disposed on opposite sides of the fastening component for hooking the hook portions of the two fasteners. The tool structure of claim 7, wherein the elastic system is a compression spring.