WO2020140341A1

WO2020140341A1 - Hand-held tool having anti-drop device

Info

Publication number: WO2020140341A1
Application number: PCT/CN2019/082797
Authority: WO
Inventors: 林伯豪
Original assignee: 林伯豪
Priority date: 2019-01-02
Filing date: 2019-04-16
Publication date: 2020-07-09
Also published as: CN111390842A; CN111390842B

Abstract

A hand-held tool having an anti-drop device, comprising a handle (10), a connecting rod (20) and the anti-drop device. The anti-drop device connects the handle (10) and the connecting rod (20), and comprises an embedding member (40) and a tightening member (50). The embedding member (40) comprises a base body (41) and a claw portion (43); the base body (41) is provided with a buckle groove (412); the buckle groove (412) is radially recessed in the base body (41), and a side opening (413) is formed on the outer periphery of the base body (41); the claw portion (43) is formed on the side, facing the handle (10), of the base body (41). The tightening member (50) is sleeved on the outer periphery of the claw portion (43) of the embedding member (40). During use, after the buckle groove (412) of the embedding member (40) and a groove (21) of the connecting rod (20) are buckled with each other, the connecting rod (20) is inserted into the handle (10), and the claw portion (43) of the embedding member (40) is sleeved on the outer periphery of the handle (10), and then the claw portion (43) is forced by the tightening member (50) to connect the connecting rod (20) and the handle (10), thereby preventing the connecting rod (20) from dropping off from the handle (10). The present anti-drop device is sleeved on the outer periphery of a connecting portion (13) connected to the handle (10), thus it is not necessary to provide a complicated locking structure inside the handle (10), therefore having the advantages of easy manufacturing and low manufacturing cost.

Description

Hand tool with anti-drop device

Technical field

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

Background technique

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 recess of the post It 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.

Invention Disclosure

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 circumference of the grip, and can effectively prevent the post from gripping Fall off.

In order to achieve the above-mentioned object, the hand tool of the present invention having a device for preventing fall-off includes

A grip, including

An ontology

A connecting portion extending outward from the body, and having a slot formed in the connecting portion and forming an opening at an end away from the body;

A post is inserted into the slot of the connection part of the handle, and includes a concave groove, the concave groove is concavely arranged on the outer periphery of the post, is located at an end close to the handle, and is located at the end of the handle Outside of the slot; and

An anti-dropping device, connecting the handle and the post, which includes

An inserting piece is sleeved on the outer periphery of the connecting part 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 interfits 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 opening of the handle Inscribed circle diameter; and

A claw portion formed on a side of the seat body facing the handle, which includes 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 handle; and

A tightening member is sleeved on the outer periphery of the claw of the clamping member, and presses the claw of the clamping member.

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 portion 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, and 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 adapted to connect different types of grips and post.

Brief description of the drawings

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 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 the 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 present invention.

10 is an assembly diagram of the sixth preferred embodiment of the present invention.

Among them, the reference signs

10, 10A grip, 11, 11A body

13 connection section 131 slot

132 openings 20 pick-ups

21 concave ditch 30 anti-shedding device

40 inlay card pieces 41 seats

412 buckle groove 413 side opening

43 claws 431 claws

433

Anti-slip sleeves

50, 50A, 50B, 50C, 50D tightening parts

51 ring sets 511 linked slots

52, 52A pressing parts 521 screw

522 shank 523 screw head type

53 connectors 54 hook-and-loop fasteners

55 elastic rope 56 clips

562 ears 563 long slot

57 outer ring seat 571 outer thread

58 inner ring seat 581 internal thread

582 tapered hole 59 chuck

591 clip hole 592 slot

Best way to implement the invention

The structural principle and working principle of the invention are described in detail below with reference to the drawings:

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 grip 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 it can 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 recessed radially 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 is smaller than The diameter of the inscribed circle of the opening 132 of the handle 10 is slightly larger than the distance between the grooves 21 of the post 20 on the radially opposite sides, and the seat 41 can be inserted into the groove 21 from the side of the post 20, and卡制此接杆20。 The card holder 20. 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 legs 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 sleeved on the claw feet 431, and each anti-slip sleeve 433 can be a non-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 can 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 grip 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 inserting member 40 can be pressed tightly, and the inserting member 40 can be tightly fixed to the outer periphery of the connecting portion 13; preferably, the tightening member 50 further includes a connecting member 53, the metal band of the ring sleeve 51 is ring-shaped and has an overlapping section, the connecting member 53 is connected to the overlapping section of the metal band, and the pressing member 52 includes a The screw 521 and a handle portion 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 body of the ring sleeve 51 of the tightening member 50 can also be formed by integrally bending the seat body 41 and the claw feet 431 of the inserting member 40 using a metal plate, and after bending and forming, The connecting member 53 and the screw 521 of the pressing member 52 are connected to form an integrally connected and non-detachable part of the locking member 40 and the tightening member 50 of the anti-drop device 30.

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 inserting member 40 around 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 insertion member 40, and the ring sleeve 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 grip 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 ring-shaped structure can be pressed tightly 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 rope 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 a fifth preferred embodiment of the present invention, wherein the tightening member 50C is a clip 56 which is integrally bent into a ring shape from a metal sheet and is provided at opposite ends The two ears 562 can compress the two ears 562 to force the clip 56 to elastically deform and change the inner diameter of the clip 56 to facilitate sleeve fitting on the outer periphery of the inserting member 40 and sleeve to position After releasing both ears 562, the clip 56 is restored to the original inner diameter, and the clamping member 40 is clamped tightly; preferably, one end of the metal piece of the clip 56 is provided along the In the long slot 563 extending in the longitudinal direction of the metal sheet, the other end of the metal sheet passes through the long slot 563, and opposite ends of the metal sheet are folded outward to form the two ear portions 562, respectively.

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 collet 59; the inner ring seat 58 and the outer ring The seat 57 is threadedly connected. The outer periphery of the inner ring seat 58 and the inner periphery 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 in the axial direction. The shaped hole 582 is a tapered shape with one end gradually expanding outward; the chuck 59 is provided in the tapered hole 582 of the inner ring seat 58, its outer periphery is conical, and is provided with an axially extending clamping hole 591 and a slit 592 ; 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, changing 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 fix the clamping member 40 tightly.

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 lateral direction 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.

Of course, the present invention can have other various embodiments. Without departing from the spirit and essence of the present invention, those skilled in the art can make various corresponding changes and modifications according to the present invention, but these corresponding Both changes and modifications shall fall within the protection scope of the claims appended to the present invention.

Industrial applicability

Claims

A hand-held tool with an anti-drop device is characterized in that it contains

A grip, including:

An ontology

A connecting portion extending outward from the body, and having a slot formed in the connecting portion and forming an opening at an end away from the body;

A post is inserted into the slot of the connection part of the handle, and includes a concave groove, the concave groove is concavely arranged on the outer periphery of the post, is located at an end close to the handle, and is located at the end of the handle Outside of the slot; and

An anti-falling device connecting the handle and the post includes:

An inserting piece is sleeved on the outer periphery of the connecting portion of the handle, and includes:

A body is pressed against one end of the connecting portion of the handle, and clamps the post, which includes

A buckle groove interfits 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 opening of the handle Inscribed circle diameter; and

A claw portion formed on a side of the seat body facing the handle, which includes 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 handle; and

A tightening member is sleeved on the outer periphery of the claw of the clamping member, and presses the claw of the clamping member.
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.
The hand tool with an anti-dropping device according to claim 1, wherein the claw portion of the inserting member is further provided with a plurality of anti-slip sleeves, and the anti-slip sleeves are respectively sleeved on the claw feet of the claw portion , And 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 are integrally formed by a metal plate member, and the claw of the inserting member is further provided with There are a plurality of anti-slip sleeves, and 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 that of the claw feet.
The hand tool with an anti-dropping 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 member connects the opposite ends of the metal belt body and constricts the inner diameter formed by the ring sleeve.
The hand-held tool with an anti-falling device according to claim 5, wherein the tightening member further comprises a connecting member; the metal band of the ring sleeve forms a ring shape and forms an overlapping section, the connection The member is connected to the overlapping section of the metal belt body, the pressing member includes a screw, which is penetrated in the connecting member and connected with the ring sleeve, and the ring sleeve is provided with an interlocking groove corresponding to the screw.
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 clamping member are integrally formed with a metal plate member and the claws of the clamping member .
The hand-held tool with an anti-dropping device according to claim 6, wherein the pressing member includes a handle portion, which is disposed at one end of the screw.
The hand-held tool with an anti-dropping device according to 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-falling device according to any one of claims 1 to 4, wherein the tightening member includes:

An outer ring seat;

An inner ring seat threadedly connected to the outer ring seat, which includes a tapered hole, the tapered hole being tapered outward at one end; and

A chuck is provided in the tapered hole of the inner ring seat.