TWI735370B - Tool extension rod - Google Patents

Abstract

A tool extension rod is provided, including a rod, a sliding sleeve, a locking piece, a push rod, a sliding rod, a first spring and a second spring. The sliding sleeve is slidably disposed on the rod. The sliding rod is goes through the push rod and slidably disposed through the rod. The locking piece and the push rod synchronously move. The first spring is disposed between the rod and the push rod. The second spring is disposed between the rod and the sliding sleeve.

Description

Tool extension

The present invention is related to the tool extension rod.

Most products are assembled from multiple components, and fasteners (such as screws, nuts) are often used to connect during the assembly process, and for large and rapid assembly, workers usually use rotating tools and Cooperate with tool extension rods to assemble various adapters (such as sleeves, screwdriver heads) to rotate corresponding fasteners. The tool extension rods disclosed in Taiwan patents I515092, M503983, M469991 and M435342 belong to this category.

However, the existing tool extensions on the market have operational inconveniences in actual use, such as the inability of the user to smoothly control the movement of the sliding sleeve, the poor stability of the sliding sleeve, the insufficient combination with the sleeve, and the operational response. Not fast enough...and so on. Therefore, it is necessary to provide a novel and progressive tool extension to provide users with a sense of operation.

The main purpose of the present invention is to provide a tool extension rod, the sliding sleeve can be stably sleeved on the rod body, and the sliding sleeve can slide quite smoothly and quickly, so that the user can have a smooth operation feeling, and allow the tool extension The kit can be quickly attached or detached.

To achieve the above objective, the present invention provides a tool extension rod, which includes: a rod body, a sliding sleeve, a locking element, a push rod, a sliding rod, a first elastic element and a second elastic element. The rod body includes an internal space, a sliding groove, and a containing hole, the sliding groove and the containing hole respectively communicate with the internal space; the sliding sleeve is selectively movably sleeved on the rod; the locking member is movably Is limited to the receiving hole to be selectively engaged with a kit; the push rod is accommodated in the internal space, and can move relative to the receiving hole in a locked position and a release position. When in the locked position, the push rod The rod presses the locking member to protrude out of the rod body. When in the release position, the push rod does not press against the locking member, and the lock member can protrude into the internal space; the sliding rod penetrates through the ground of the push rod. Slidingly disposed in the sliding groove, the sliding rod and the push rod are in a co-moving relationship, and in the moving direction of the sliding sleeve, the sliding rod and the sliding sleeve are in an interference relationship; the first elastic member springs against the push rod Between the rod and the rod body, to drive the push rod to move toward the locking position in a normal state; the second elastic member elastically abuts between the sliding rod and the sliding sleeve.

1,1A: Rod body

11: Internal space

12: Chute

13: Pore

14: Extension

141: Extended Space

15: The first main body

16: The second main body

17: Assembly Department

2: sliding sleeve

21: The first part

22: The second part

23: Room

231: The first container

232: The second container

24: Stage

25: ring mouth

26: inclined end

27: Groove

31: Locking piece

32: putter

33: Slider

34: Pad body

41: The first elastic part

42: second elastic part

5,5A: Magnet

6: Telescopic parts

7,7A: Kit

8,8A: to be magnetically attracted

9: Power tools

Fig. 1 is a perspective view of the first embodiment of the present invention.

Figure 2 is an exploded view of Figure 1.

Fig. 3 is a cross-sectional view of Fig. 1.

4 and 5 are schematic diagrams of the operation of the first embodiment of the present invention.

Fig. 6 is a use state diagram of the first embodiment of the present invention.

7 to 9 are schematic diagrams of the operation of the second embodiment of the present invention.

Fig. 10 is a diagram of the use state of the second embodiment of the present invention.

Please refer to Figures 1 to 6, which show the first embodiment of the present invention. The tool post of the present invention includes: a rod body 1, a sliding sleeve 2, a locking member 31, a push rod 32, and a sliding rod 33 , A first elastic member 41 and a second elastic member 42.

The rod body 1 includes an inner space 11, a sliding groove 12 and a containing hole 13, and the sliding groove 12 and the containing hole 13 respectively communicate with the inner space 11. The sliding sleeve 2 is selectively movably sleeved on the rod body 1. The locking member 31 is movably confined to the receiving hole 13 to selectively engage a sleeve 7 such as a sleeve.

The push rod 32 is accommodated in the internal space 11, and can move to a locked position and a release position relative to the receiving hole 13. In the locked position, the push rod 32 urges the locking member 31 to protrude from the rod The body 1 is pressed against the sleeve 7; and in the release position, the push rod 32 does not press against the locking member 31, and the locking member 31 can protrude into the inner space 11 to release the sleeve 7. The sliding rod 33 is slidably disposed on the sliding groove 12 through the push rod 32, the sliding rod 33 and the push rod 32 are in a co-moving relationship, and in the moving direction of the sliding sleeve 2, the sliding rod 33 It has an interference relationship with the sliding sleeve 2, and the sliding rod 33 and the sliding sleeve 2 can selectively move simultaneously. The first elastic member 41 elastically abuts between the push rod 32 and the rod body 1 to drive the push rod 32 to move toward the locked position normally, so as to ensure the safety when using the kit 7.

It should be particularly noted that, while the second elastic element 42 springs between the sliding rod 33 and the sliding sleeve 2, the second elastic element 42 uses the sliding rod 33 as a reference to provide a supporting force to the sliding sleeve 2 , So that the sliding sleeve 2 can maintain a stable state relative to the sliding rod 33 during the process of moving in the locked position and the released position, which is helpful for the smoothness of the operation and movement; and the second elastic member 42 can be configured On the premise of having better operating quality, the tolerance for dimensional errors between components can be greatly improved. In other words, the requirements for precision and assembly gap between the sliding sleeve 2 and the rod body 1 can be reduced, so that the processing It can be manufactured more quickly and has the advantage of reducing costs.

In this embodiment, the radial dimension of the second elastic element 42 is greater than the radial dimension of the first elastic element 41, and the second elastic element 42 is sleeved on the rod 1 to ensure that it is compressed or stretched. Will not be arbitrarily twisted sideways. In addition, the elastic force of the first elastic member 41 is greater than the elastic force of the second elastic member 42 to ensure that the push rod 32 can be reliably maintained in the locked position under the condition that the sliding sleeve 2 is not affected by external force.

Preferably, the tool extension rod further includes a cushion body 34 which is accommodated in the sliding sleeve 2 and sleeved on the rod body 1, and the cushion body 34 is disposed on the sliding rod 33 and the second elastic body. Between the pieces 42, the cushion body 34 can provide a larger area for the second elastic piece 42 to stick stably, and can evenly transmit the force to allow the sliding rod 33 to slide stably.

Specifically, the sliding sleeve 2 is provided with a chamber 23 that is connected to the slide groove 12, the rod body 1 passes through the chamber 23, and the slide rod 33 protrudes from the slide groove 12 into The accommodation chamber 23 and the second elastic member 42 are accommodated in the accommodation chamber 23. In addition, the chamber 23 includes a first chamber 231 and a second chamber 232 each having a cylindrical shape, and the radial dimension of the first chamber 231 is smaller than the radial dimension of the second chamber 232, Furthermore, a step portion 24 is formed between the two; wherein, a part of the sliding rod 33 is normally clamped between the second elastic member 42 and the step portion 24, and thus can react and move simultaneously.

More specifically, the sliding sleeve 2 includes a first part 21 and a second part 22. The first part 21 penetrates the containing chamber 23, the second part 22 is positioned in the containing chamber 23, and the second part The component 22 is provided with a ring opening 25 communicating with the chamber 23, and the second elastic member 42 elastically abuts between the second component 22 and the sliding rod 33. The above-mentioned division of the sliding sleeve 2 into two parts can simplify the difficulty of assembly, so that the assembler can set the first part 21 on the front end of the rod body 1 and place the second elastic member 42 into the chamber 23. The second part 22 can then be connected to the first part 21 by the rear end of the rod body 1 through the ring opening 25.

In this embodiment, the second component 22 is embedded in the chamber 23 through a tight fit, so as to simplify the components and assembly steps. And, the end of the first part 21 facing away from the second part 22 is An inclined end 26 is continuously inclined and approached toward the receiving hole 13, and the inclined end 26 can better avoid jamming with surrounding components, so that it can prevent accidental release. In addition, a plurality of grooves 27 are provided on the outer surface of the first component 21 to increase the contact area with the outside and increase the smoothness of operation.

Preferably, the tool post further includes a magnet 5, the magnet 5 is positioned on an extension 14 of the rod body 1, and the extension 14 is adapted to extend into the sleeve 7 to magnetically attract a magnet to be attracted 8 For example, but not limited to screws, bolts, nuts, etc., the magnet 5 can ensure that the part to be magnetically attracted 8 will not fall off the sleeve 7.

The rod 1 includes the extension part 14, a first body part 15, a second body part 16, and a set of connecting parts 17, which are connected in sequence. The extension part 14 surrounds an extension space 141, the first The main body portion 15 is provided with the receiving hole 13, the second main body portion 16 is provided with the sliding groove 12, the assembling portion 17 is for connecting a power tool 9 (such as an electric drill tool), and the length of the extension portion 14 is greater than that of the first The length of a main body 15 can penetrate the sleeve 7 reliably. The magnet 5 is accommodated in the extension space 141 to avoid unintended impact. The inner space 11 penetrates the first main body 15 and the second main body. The portion 16 is connected to the extension space 141, and a portion of the push rod 32 can selectively extend into the extension space 141 from the inner space 11. In this embodiment, the first main body portion 15 is in the shape of a rectangular block for embedding with the sleeve 7; and the second main body portion 16 is in the shape of a round rod to facilitate the sliding of the sliding sleeve 2; in addition, the The extension part 14 is also in the shape of a round rod so as to be inserted into the sleeve 7 to magnetically attract the part 8 to be magnetically attracted.

Please further refer to the tool post of the second embodiment of FIGS. 7-10. The tool post further includes a telescopic member 6 and a magnet 5A. The telescopic member 6 is telescopically inserted into the rod body 1A, and the magnet 5A Positioned at the telescopic piece 6, the telescopic piece 6 is for extending into the inside of the sleeve 7A to magnetically attract the magnet 8A; wherein, the design of the telescopic element 6 can penetrate into the longer sleeve 7A to reliably attract The to-be-magnetized piece 8A.

1: Rod body

2: sliding sleeve

7: Kit

8: To be magnetically attracted

9: Power tools

Claims (8)

A tool extension rod includes: a rod body including an internal space, a sliding groove and a containing hole, the sliding groove and the containing hole are respectively connected to the internal space; a sliding sleeve, which can be selectively movably sleeved Rod body; a locking member movably limited to the containing hole to selectively engage a sleeve; a push rod accommodated in the internal space, and can move relative to the containing hole in a locked position and a In the release position, in the locked position, the push rod urges the locking member to protrude from the rod body, and in the release position, the push rod does not urge the locking member, and the locking member can protrude into the internal space ; A sliding rod, passing through the push rod and slidably disposed in the chute, the sliding rod and the push rod are in a co-moving relationship, and in the moving direction of the sliding sleeve, the sliding rod and the sliding sleeve are interference Relationship; a first elastic member that springs between the push rod and the rod body to drive the push rod to normally move toward the locking position; a second elastic member springs against the slide rod and the sliding sleeve Between; and a magnet positioned on an extension of the rod, the extension for extending into the package to magnetically attract a piece to be magnetically attracted; wherein the rod includes the extension connected in sequence Part, a first body part, a second body part and a set of connecting parts, the extension part encloses an extension space, the first body part is provided with the containing hole, and the second body part is provided with the sliding groove, The connecting portion is used to connect a power tool, the length of the extension portion is greater than the length of the first body portion, the magnet is accommodated in the extension space, and the inner space penetrates the first body portion and the second body portion. Connecting to the extension space, a part of the push rod can selectively extend into the extension space from the internal space. The tool extension rod according to claim 1, wherein the sliding sleeve is provided with a chamber, the chamber communicates with the chute, the rod body passes through the chamber, and the slide rod protrudes into the chute In the containing chamber, the second elastic member is accommodated in the containing chamber. The tool extension of claim 2, wherein the sliding sleeve includes a first part and a second part, the first part penetrates the chamber, the second part is positioned in the chamber, and the second part The component is penetrated with a ring opening communicating with the chamber, and the second elastic component elastically abuts between the second component and the sliding rod. The tool extension according to claim 3, wherein the end of the first part facing away from the second part is an inclined end, and the inclined end is continuously inclined toward the receiving hole. The tool extension according to claim 2, wherein the chamber includes a first chamber and a second chamber, each having a cylindrical shape, and the radial dimension of the first chamber is smaller than the second chamber A step is formed between the two in the radial dimension; wherein, a part of the sliding rod is normally clamped between the second elastic member and the step. The tool extension rod according to any one of claims 1 to 5, further comprising a cushion body, the cushion body is accommodated in the sliding sleeve and sleeved on the rod body, and the cushion body is provided between the sliding rod and the rod body. Between the second elastic pieces. A tool extension rod includes: a rod body including an internal space, a sliding groove and a containing hole, the sliding groove and the containing hole are respectively connected to the internal space; a sliding sleeve, which can be selectively movably sleeved Rod body; a locking member movably limited to the receiving hole to selectively engage with a kit; a push rod accommodated in the internal space, and can move relative to the receiving hole in a locked position and a In the release position, in the locked position, the push rod urges the locking member to protrude from the rod body, and in the release position, the push rod does not urge the locking member, and the locking member can protrude into the internal space ； A sliding rod slidably disposed on the chute through the push rod, the sliding rod and the push rod are in a co-moving relationship, and in the moving direction of the sliding sleeve, the sliding rod and the sliding sleeve are in an interference relationship ; A first elastic member that springs between the push rod and the rod body to drive the push rod to move toward the lock position normally; a second elastic member springs against the sliding rod and the sliding sleeve Wherein, the tool extension rod further includes a telescopic member and a magnet, the telescopic member is telescopically inserted into the rod body, the magnet is positioned on the telescopic member, and the telescopic member is provided to extend into the inner part of the kit to magnetize Suck a piece of magnetic attraction. A tool extension rod includes: a rod body including an internal space, a sliding groove and a containing hole, the sliding groove and the containing hole are respectively connected to the internal space; a sliding sleeve, which can be selectively movably sleeved Rod body; a locking member movably limited to the receiving hole to selectively engage with a kit; a push rod accommodated in the internal space, and can move relative to the receiving hole in a locked position and a In the release position, in the locked position, the push rod urges the locking member to protrude from the rod body, and in the release position, the push rod does not urge the locking member, and the locking member can protrude into the internal space ; A sliding rod, passing through the push rod and slidably arranged in the chute, the sliding rod and the push rod are in a co-moving relationship, and in the moving direction of the sliding sleeve, the sliding rod and the sliding sleeve are interference Relationship; a first elastic member that springs between the push rod and the rod body to drive the push rod to move toward the locked position normally; and a second elastic member that springs against the slide rod and the slide Between the sleeve; wherein, the sliding sleeve is provided with a chamber, the chamber communicates with the chute, the rod body passes through the chamber, the slide rod protrudes from the chute and extends into the chamber, the first Two elastic pieces are accommodated in the chamber; the sliding sleeve includes a first A part and a second part, the first part penetrates the chamber, the second part is positioned in the chamber, the second part is penetrated with a ring opening communicating with the chamber, the second elastic member is elastic Abutting between the second part and the sliding rod; the end of the first part facing away from the second part is an inclined end, and the inclined end is continuously inclined toward the receiving hole; A cylindrical first container and a second container, the radial dimension of the first container is smaller than the radial dimension of the second container, and a step is formed between the two; wherein, the sliding rod The part is normally clamped between the second elastic element and the step; the radial dimension of the second elastic element is larger than the radial dimension of the first elastic element, and the second elastic element is sleeved on the rod body ; The tool post further includes a magnet and a pad body, the magnet is positioned on an extension of the rod body, the extension portion for extending into the package to magnetically attract a piece to be magnetically attracted, the pad body accommodates The sliding sleeve is sleeved on the rod body, the cushion body is arranged between the sliding rod and the second elastic member; the rod body includes the extension part, a first body part, and a The second body part and a set of connecting parts, the extension part encloses an extension space, the first body part is provided with the containing hole, the second body part is provided with the sliding groove, and the connecting part is used for connecting a power tool , The length of the extension portion is greater than the length of the first body portion, the magnet is accommodated in the extension space, the inner space penetrates the first body portion and the second body portion and communicates with the extension space, the push rod Part can selectively extend from the inner space into the extension space; the elastic force of the first elastic element is greater than the elastic force of the second elastic element; the second element is embedded in the chamber through a tight fit; in the first The outer surface of the component is provided with a plurality of grooves; the first main body is in the shape of a rectangular block; the second main body is in the shape of a round rod; the extension is in the shape of a round rod.

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