TWI693130B - Hand tool with anti-drop device - Google Patents

Abstract

A hand tool with an anti-falling device includes a grip, a post and an anti-falling device. The anti-falling device is connected with the handle and the connecting rod, and includes an inserting member and a tightening member. The inserting member includes a base body and a claw portion, the seat body is provided with a buckle groove, the buckle groove is recessed radially in the seat body, and a side opening is formed on the outer periphery of the seat body, the claw portion is formed in the seat The body faces one side of the grip; the tightening member is sleeved on the outer periphery of the claw of the inserting member. In use, after the buckle groove of the inserting member and the groove of the connecting rod are locked with each other, the connecting rod is inserted into the handle, and at the same time, the claw of the inserting member is sleeved on the outer periphery of the handle, and then tightened The piece presses the claw, and connects the post with the grip, and prevents the post from falling out of the grip.

Description

Hand tool with anti-drop device

The invention relates to a hand tool with a replaceable post, in particular to a hand tool with an anti-drop device and a replaceable post.

Existing hand tools, such as general hand tools and hand-held electric or pneumatic tools, in order to replace the post, most of them are provided with a quick release structure in the handle, and the steel ball of the quick release structure is snapped into the groove of the post , And the post can be quickly removed and replaced.

However, because the quick release device is located inside the handle, the structure of the handle is complicated and it is not easy to manufacture; and the snap of the quick release structure is easy to fail, resulting in the post and the handle being easily separated by external force collision, which is less ideal.

In view of this, the main object of the present invention is to provide a hand tool with an anti-drop device, which has a simple structure, is sleeved and connected to the outer periphery of the grip, and can effectively prevent the post from dropping off from the grip .

In order to achieve the above object, the hand tool of the present invention with a fall-off prevention device includes a handle and a body; a connecting portion extending outward from the body and having a slot provided in the connection An opening is formed in the end away from the body; a post inserted into the slot of the connecting portion of the handle, which includes a recess groove, which is recessed on the outer periphery of the post and located close to the One end of the handle, which is located outside the slot of the handle; and an anti-falling device, which connects the handle and the post, which includes an inserting piece, sleeved on the periphery of the connecting portion of the handle, which includes A body is pressed against one end of the connecting portion of the handle and clamps the post, which includes a buckle groove, which engages with the groove of the post, and is radially recessed in the seat body , And a side opening is formed on the outer periphery of the seat body, the side opening of the buckle groove is smaller than the inscribed circle diameter of the opening of the handle; and a claw portion is formed on the side of the seat body facing the handle, which Including a plurality of claw feet, the claw feet are arranged on the outer periphery of the seat body in an annular interval and extend toward the grip; and a tightening member is sleeved on the outer periphery of the claw of the inserting member, and Press the claw of the clamping piece tightly.

With the above technical methods, the effects achieved by the present invention are improved as follows:

1. The seat body of the inserting member has a side opening, and the seat body of the inserting member can be inserted into the groove of the connecting rod from the side, and the claw of the inserting member is clamped by a pressing member to prevent contact The lever 20 comes off from the slot 131 of the grip 10.

2. The anti-dropping device of the present invention is mainly sleeved on the outer periphery of the connecting portion connected to the handle, without the need to provide a complicated clamping structure inside the handle, which has the advantages of easy manufacturing and low manufacturing cost.

3. The anti-dropping device of the present invention has a simple structure and is easy to use, and a single anti-dropping device can be suitable for connecting different types of grips and post rods.

Please refer to FIG. 1 and FIG. 2 together, the first preferred embodiment of the hand tool with anti-dropping device of the present invention includes a handle 10, a post 20, and an anti-dropping device 30.

The handle 10 includes a body 11 and a connecting portion 13; the connecting portion 13 extends outward from the body 11 and is provided with a slot 131; the slot 131 is disposed in the connecting portion 13 and away from the body An opening 132 is formed at one end of the 11; the shape of the body 11 of the handle 10 is not limited, and may be a handle of a general hand tool, or as shown in the second preferred embodiment of FIG. 6, the body 11A of the handle 10A is provided with, For example, a pneumatic device or an electric device, etc., can drive the connecting rod 20 to rotate.

Please refer to FIG. 1 to FIG. 3, the post 20 is inserted into the slot 131 of the handle 10, and includes a recess 21, the recess 21 is recessed on the outer periphery of the post 20, the recess The cross-sectional shape of the groove 21 may be ring-shaped or U-shaped, which is located at one end of the post 20 close to the handle 10 and outside the handle 10.

The anti-falling device 30 connects the handle 10 and the post 20, and includes an inserting member 40 and a tightening member 50. The inserting member 40 is sleeved on the outer periphery of the connecting portion 13 of the handle 10, and locks the post 20, which includes a base 41 and a claw portion 43. The seat body 41 is U-shaped, abuts against one end of the connecting portion 13 of the handle 10, and locks the post 20, which includes a buckle groove 412. The buckle groove 412 and the concave groove 21 of the post 20 are engaged with each other. The buckle groove 412 is radially recessed in the seat body 41, and a side opening 413 is formed on the outer periphery of the seat body 41; the side opening 413 The diameter of the inscribed circle of the opening 132 of the handle 10 is slightly larger than the distance between the concave grooves 21 of the post 20 on the diametrically opposite sides, and the seat body 41 can be inserted into the concave groove 21 from the side of the post 20. Instead, the card post 20 is clamped. The claw portion 43 is formed on the side of the seat body 41 facing the handle 10, and includes a plurality of claw feet 431; the claw feet 431 are arranged on the outer periphery of the seat body 41 in an annular interval and are oriented toward the The handle 10 extends to surround the outer periphery of the connecting portion 13; the seat body 41 and the claw feet 431 can be formed by bending a metal plate integrally; preferably, the claw portion 43 further includes a plurality of stoppers Sliding sleeve 433, the anti-slip sleeves 433 are respectively sleeved on the claw feet 431, and each anti-slip sleeve 433 can be an anti-slip material with a friction coefficient greater than the friction coefficient of the claw feet 431, such as rubber, plastic, etc. In order to increase the friction between the claw portion 43 and the connecting portion 13; the anti-slip sleeves 433 may also be provided with a plurality of convex portions arranged on the surface to increase the anti-slip effect.

The tightening member 50 is sleeved on the outer periphery of the claw portion 43 of the inserting member 40 and presses the claw portion 43, and the fixing member 40 is forcibly fixed to the connecting portion 13 of the handle 10; In an embodiment, the tightening member 50 includes a ring sleeve 51 and a pressing member 52; the ring sleeve 51 is formed by a metal band, and the pressing member 52 is connected to opposite ends of the ring sleeve 51 for The inner diameter formed by the ring sleeve 51 is constricted, and the claw portion 43 of the clamping member 40 can be pressed tightly, and the clamping member 40 can be forcibly fixed to the outer periphery of the connecting portion 13; preferably, the tightening The member 50 further includes a connecting member 53. The metal belt of the ring sleeve 51 is ring-shaped and has overlapping sections. The connecting member 53 connects the overlapping sections of the metal belt. The pressing member 52 includes A screw 521 and a shank 522 are inserted into the connecting member 53 and connected to the ring sleeve 51, and the ring sleeve 51 is provided with an interlocking groove 511 corresponding to the screw 521, which can be used by the screw 521 Drive the displacement and confine the inner diameter formed by the ring sleeve 51; the handle 522 is provided at one end of the screw 521, and the user can directly hold the handle 522 to drive the screw 521 to rotate; please refer to FIG. 4 The metal band of the ring sleeve 51 of the tightening member 50 can also be formed by integrally bending a metal plate member with the seat body 41 and the claw feet 431 of the inserting member 40, and after being bent and formed, Then, it is connected to the screw 53 of the connecting member 53 and the pressing member 52, so that the clamping member 40 of the anti-dropping device 30 and the tightening member 50 are integrally connected and cannot be detached.

With reference to FIG. 5, the installation steps of the present invention are as follows: First, the post 20 is inserted from the side opening 413 of the embedding member 40, so that the groove 21 of the post 20 is located in the buckle groove 412 of the seat body 41, And engage each other; then insert the post 20 into the slot 131 of the handle 10, and at the same time, fit the claw portion 43 of the engaging member 40 to the periphery of the connecting portion 13 of the handle 10, and press the seat 41 against At the port of the connecting portion 13; finally, the ring sleeve 51 of the tightening member 50 is sleeved on the claw portion 43 of the inserting member 40, and the ring member 51 is closed by the pressing member 52, and the The claw portion 43 of the inserting member 40 is tightly fixed to the outer periphery of the connecting portion 13 to complete the assembly, and the post 20 cannot be axially displaced and falls out of the slot 131 of the handle 10.

Please refer to FIG. 7 for the third preferred embodiment of the present invention. The difference from the first preferred embodiment is that the pressing member 52A of the tightening member 50A does not have a shank, but is at one end of the screw 521 The screw head type 523 is formed and provided with a screw groove, which can reduce the volume of the tightening member 50A, and can use a screwdriver tool to drive the pressing member 52A to rotate, and the ring seat 51 is tightened, and the fitting is forcedly fixed卡件40。 40 pieces.

Please refer to FIG. 8 for the fourth preferred embodiment of the present invention, wherein the tightening member 50B includes a hook-and-loop fastener 54 and an elastic cord 55. The front and back sides of the hook-and-loop fastener 54 are respectively provided with hooks The sticky hook-shaped structure and the ring-shaped structure can be pressed firmly after winding to form a temporarily tightened state. The elastic cord 55 is connected to one end of the hook and loop fastener 54. When in use, the elastic rope 55 can be tied to the connecting portion 13 and wound around the outer periphery of the claw portion 43 of the inserting member 40. When winding, the elastic rope 55 is simultaneously tensioned to force the claw portion 43, and The hook and loop fastener 54 is wound around the outer periphery of the elastic cord 55, and the front and back sides of the hook and loop fastener are overlapped with each other to form a tight state.

Please refer to FIG. 9 for the fifth preferred embodiment of the present invention, in which the tightening member 50C is a clip 56 which is integrally bent into a ring shape from a metal sheet and is formed at opposite ends Two ear parts 562 are provided, and the two ear parts 562 can be pressed to force the clip 56 to elastically deform and change the inner diameter of the clip 56 so as to be sleeved on the outer periphery of the inserting member 40 and sleeved After positioning, release the two ears 562 to restore the clip 56 to the original inner diameter, and tightly clamp the insert 40; preferably, one end of the metal piece of the clip 56 A long slot 563 extending along the longitudinal direction of the metal sheet is provided, the other end of the metal sheet is inserted into the long slot 563, and opposite ends of the metal sheet are respectively folded outward to form the two ear portions 562.

Please refer to FIG. 10 for the sixth preferred embodiment of the present invention, wherein the tightening member 50D includes an outer ring seat 57, an inner ring seat 58 and a chuck 59; the inner ring seat 58 and the outer ring The seat 57 is threadedly connected. The outer circumference of the inner ring seat 58 and the inner circumference of the outer ring seat 57 are respectively provided with matching internal threads 581 and external threads 571. The inner ring seat 58 is provided with a tapered hole 582 axially. The hole 582 is tapered at one end; the chuck 59 is provided in the tapered hole 582 of the inner ring seat 58, the outer periphery of which is conical, and the axially extending clamping hole 591 and the slit 592 are provided ; In use, the tightening member 50D is sleeved on the outer periphery of the inserting member 40 with a clamping hole 591, and the inner ring seat 58 and the outer ring seat 57 are relatively rotated to change the inner ring seat 58 and the outer ring seat The axial relative position of 57 causes the tapered hole 582 to close the clamping hole 591 of the chuck 59 and tightly fix the clamping member 40.

With the above technical methods, the efficiency gains achieved by the present invention are as follows:

1. The seat body 41 of the embedding member 40 has a side opening 413, and the seat body 41 of the embedding member 40 can be inserted into the groove 21 of the post 20 from the side and clamped by the tightening member 50 The claw portion 43 of the engaging member 40 prevents the post 20 from falling out of the slot 131 of the grip 10.

2. The anti-dropping device 30 of the present invention is mainly sleeved on the outer periphery of the connecting portion 13 connected to the handle 10 without the need to provide a complicated locking structure inside the handle 10, which has the advantages of easy manufacturing and low manufacturing cost.

3. The anti-dropping device 30 of the present invention has a simple structure and is easy to use, and a single anti-dropping device 30 can be adapted to be connected to different types of grips 10 and post 20.

10, 10A: Grip 11, 11A: Ontology 13: Connection 131: slot 132: opening 20: Post 21: Groove 30: Anti-drop device 40: insert card 41: Seat 412: Buckle 413: Side opening 43: Claw 431: Claw feet 433: Anti-slip sleeve 50, 50A, 50B, 50C, 50D: tightening parts 51: Loop 511: Interlocking slot 52, 52A: Urgent piece 521: Screw 522: handle 523: Screw head type 53: Connector 54: Velcro 55: Elastic rope 56: Clip 562: ear 563: Long slot 57: Outer ring seat 571: External thread 58: inner ring seat 581: internal thread 582: tapered hole 59: Chuck 591: Clip hole 592: Grooving

FIG. 1 is a perspective view of the first preferred embodiment of the present invention. 2 is an exploded perspective view of the first preferred embodiment of the present invention. 3 is a partially enlarged side cross-sectional view of the first preferred embodiment of the present invention. 4 is an exploded schematic view of the tightening member of the first preferred embodiment of the present invention. 5 is an assembly diagram of the first preferred embodiment of the present invention. 6 is an exploded perspective view of a second preferred embodiment of the present invention. FIG. 7 is a schematic perspective external view of a third preferred embodiment of the present invention. 8 is an assembly diagram of a fourth preferred embodiment of the invention. 9 is an assembly diagram of a fifth preferred embodiment of the invention. 10 is an assembly diagram of the sixth preferred embodiment of the present invention.

10: Grip

11: Ontology

13: Connection

20: Post

30: Anti-drop device

40: insert card

50: tightening parts

Claims (11)

A hand-held tool with an anti-falling device includes a handle and a body; a connecting portion extends outward from the body, and a slot is provided in the connecting portion and away from the body An opening is formed at one end; a post inserted into the slot of the connecting portion of the handle, which includes a concave groove, which is recessed on the outer periphery of the post and is located near one end of the handle An outer side of the slot of the handle; and an anti-falling device, which connects the handle and the post, which comprises an inserting piece, which is sleeved on the periphery of the connecting part of the handle, which comprises a body, and is pressed against the One end of the connecting part of the handle, and the connecting rod is clamped, which comprises a buckle groove, which is interlocked with the concave groove of the connecting rod, which is radially recessed on the seat body, and on the seat body A side opening is formed on the outer periphery, the side opening of the buckle groove is smaller than the inscribed circle diameter of the opening of the handle; and a claw portion is formed on the side of the seat facing the handle, which includes a plurality of claw feet, the The claw feet are arranged on the outer periphery of the seat body in an annular interval and extend toward the grip; and a tightening member is sleeved on the outer periphery of the claw portion of the inserting member and presses the inserting member Claw. The hand tool with the anti-dropping device according to claim 1, wherein the seat body of the inserting member and the claw feet of the claw part are integrally formed by a metal plate member. The hand tool with an anti-dropping device as described in claim 1, wherein the claw portion of the inserting member is further provided with a plurality of anti-slip sleeves, the anti-slip sleeves are respectively sleeved on the claw feet of the claw portion, and the The friction coefficient of the anti-slip sleeve is greater than that of the claw feet. The hand tool with an anti-dropping device according to claim 1, wherein the seat body of the inserting member and the claw feet of the claw part are integrally formed by a metal plate member, and the claw part of the inserting member is further provided with a plurality of Anti-slip sleeves, the anti-slip sleeves are sleeved on the claw feet of the claw portion, respectively, and the friction coefficient of the anti-slip sleeve is greater than the friction coefficient of the claw feet. The hand tool with an anti-shedding device according to any one of claims 1 to 4, wherein the tightening member includes a ring sleeve and a pressing member, the ring sleeve is formed by a metal band surrounding the pressing The piece connects the opposite ends of the metal belt body and constricts the inner diameter formed by the loop sleeve. The hand tool with an anti-falling device as described in claim 5, wherein the tightening member further includes a connecting member; the metal band of the ring sleeve forms an annular shape and forms an overlapping section, and the connecting member connects to the In the overlapping section of the metal belt body, the pressing member includes a screw rod, which is inserted into the connecting member and connected to the ring sleeve, and the ring sleeve is provided with an interlocking groove corresponding to the screw rod. The hand tool with an anti-dropping device according to claim 6, wherein the ring sleeve of the tightening member and the seat body of the inserting member are integrally formed with a metal plate member and the claws of the inserting member. The hand tool with an anti-falling device as described in claim 6, wherein the pressing member includes a handle portion, which is provided at one end of the screw. The hand tool with an anti-dropping device as described in claim 6, wherein one end of the screw of the pressing member forms a screw head type. The hand tool with an anti-dropping device according to any one of claims 1 to 4, wherein the tightening member is a clip, the clip is ring-shaped, and has two ears. The hand tool with an anti-shedding device according to any one of claims 1 to 4, wherein the tightening member includes an outer ring seat; an inner ring seat is threadedly connected to the outer ring seat and includes a cone Shaped hole, the tapered hole is a tapered shape with one end gradually expanding outward; and a chuck is set in the tapered hole of the inner ring seat.

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