WO2022052799A1

WO2022052799A1 - Auxiliary handle, electric tool, and installation method for auxiliary handle

Info

Publication number: WO2022052799A1
Application number: PCT/CN2021/114171
Authority: WO
Inventors: 许洵; 梅金武; 王勤兰
Original assignee: 宝时得机械（张家港）有限公司
Priority date: 2020-09-08
Filing date: 2021-08-24
Publication date: 2022-03-17
Also published as: CN213054666U

Abstract

An auxiliary handle (10), comprising a connecting rod (3), a holding shell (1) mounted on the connecting rod (3) and held by a user, and a clamping mechanism (2) movably mounted on the connecting rod (3) for clamping an electric tool (20), wherein the clamping mechanism (2) comprises a first clamping arm (21) and a second clamping arm (22) which are arranged facing each other in order to clamp the electric tool (20); the first clamping arm (21) and the second clamping arm (22) can be arranged facing each other on the connecting rod (3) and can move in an axial direction of the connecting rod (3); the auxiliary handle (10) further comprises a locking member (4) mounted on the connecting rod (3) for driving the clamping mechanism (2) to be locked on the electric tool (20); the holding shell (1) and the locking member (4) are oppositely arranged on two sides of the clamping mechanism (2); the holding shell (1) abuts against the first clamping arm (21); and the locking member (4) abuts against the second clamping arm (22). After the electric tool (20) is clamped by means of the first clamping arm (21) and the second clamping arm (22), the locking member (4) pushes the second clamping arm (22) to move towards the first clamping arm (21), such that the auxiliary handle (10) and the electric tool (20) are locked to one another. The present invention further relates to an electric tool, and an installation method for the auxiliary handle.

Description

Auxiliary handle, electric tool and auxiliary handle installation method

technical field

The invention relates to an auxiliary handle, an electric tool and an installation method of the auxiliary handle.

Background technique

The auxiliary handle of the power tool generally includes a grip end, a gripping mechanism for clamping and fixing the power tool, and a pushing mechanism that controls the size of the gripping opening of the gripping mechanism and is arranged near the gripping housing. The housing is on the same side. When using an auxiliary handle, usually after the auxiliary mechanism is clamped to the power tool, it is necessary to fine-tune the clamping opening to improve the clamping force of the clamping mechanism. However, in the prior art, due to the push mechanism and the grip The housing is located on the same side, which makes it inconvenient for the user to apply force when fine-tuning the locking mechanism.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide an auxiliary handle which is easy to hold or apply force during operation.

In order to achieve the above purpose, the present invention provides the following technical solutions: an auxiliary handle, comprising a connecting rod, a holding shell mounted on the connecting rod for the user to hold, and a gripping shell mounted on the connecting rod for clamping A clamping mechanism for an electric tool, the clamping mechanism includes a first clamping arm and a second clamping arm that are oppositely arranged to clamp the electric tool, at least one of the first clamping arm and the second clamping arm can be along the The axial direction of the connecting rod is moved, and it is characterized in that the auxiliary handle further includes a locking member installed on the connecting rod; the holding shell and the locking member are relatively arranged on both sides of the clamping mechanism, The locking member is operable to drive the second clamping arm to move toward the first clamping arm and lock the moving position of the second clamping arm relative to the first clamping arm.

Preferably, the second clamping arm is located at a side away from the holding housing relative to the first clamping arm.

Preferably, the locking member is rotatably mounted on the connecting rod.

Preferably, an elastic member is disposed between the first clamping arm and the second clamping arm, and after the force of the locking member against the second clamping arm is removed, the elastic member pushes the first clamping arm. The second clamp arm moves in the opposite direction.

Preferably, the first clamping arm has a first sleeve part sleeved on the connecting rod and a first claw part extending downward from the first sleeve part, and the second clamping arm There is a second sleeve part sleeved on the connecting rod and a second claw part extending downward from the second sleeve part, the elastic piece is sleeved on the connecting rod, the Both ends of the elastic piece abut against the first sleeve part and the second sleeve part.

Preferably, the locking member is a locking wrench rotatably connected with the connecting rod, the locking wrench has a cam portion and a handle portion, and the rotation axis of the cam portion is perpendicular to the axis of the connecting rod.

Preferably, the holding housing is movable relative to the connecting rod in the axial direction of the connecting rod.

Preferably, the auxiliary handle further includes a pusher, and the pusher includes a pipe body and a knob block, and one end of the pipe body away from the knob block is threadedly connected to the connecting rod, and the holding shell is sleeved on the tube body.

Preferably, a stop surface is provided on the push member, and the stop surface restricts the holding housing from moving in a direction away from the first clamping arm.

Preferably, the locking member is a knob threadedly connected to the connecting rod.

Preferably, the connecting rod has a stop block, and one end of the connecting rod with the stop block is inserted into the holding housing.

Preferably, an electric tool includes a handle and a casing, the casing includes a motor and a working mechanism inside, and the electric tool also includes the above-mentioned auxiliary handle.

The present invention also provides an installation method of an auxiliary handle, the auxiliary handle includes a connecting rod, a holding shell mounted on the connecting rod for the user to hold, and a holding shell mounted on the connecting rod for clamping A clamping mechanism for an electric tool, the clamping mechanism includes a first clamping arm and a second clamping arm that are oppositely arranged to clamp the electric tool, at least one of the first clamping arm and the second clamping arm can be along the The connecting rod moves in the axial direction, the auxiliary handle further includes a locking piece installed on the connecting rod, and the holding shell and the locking piece are relatively arranged on both sides of the clamping mechanism. The installation method includes the following steps:

Step 1: attaching the first clamp arm and the second clamp arm to the power tool;

Step 2: Operate the locking member so that the second clamping arm moves toward the first clamping arm and locks the moving position of the second clamping arm relative to the first clamping arm.

Preferably, the operating the locking member includes rotating the locking member so that the locking member drives the second clamping arm, and the rotation axis of the locking member is perpendicular to the axis of the connecting rod.

Preferably, the operating the locking member includes rotating the locking member so that the locking member moves along the axis of the connecting rod to drive the second clamping arm.

The beneficial effect of the present invention is that: in the auxiliary handle of the present application, by arranging the locking member and the holding housing on both sides of the clamping mechanism, when the locking member is clamped by the first clamping arm and the second clamping arm after the electric tool is clamped , the second clamping arm is pushed by the locking member to move in the direction of the first clamping arm and locks the auxiliary handle and the electric tool, so that it is convenient to hold or apply force during operation.

The above description is only an overview of the technical solution of the present invention. In order to understand the technical means of the present invention more clearly, and implement it according to the content of the description, the preferred embodiments of the present invention are described in detail below with the accompanying drawings.

Description of drawings

1 is a schematic structural diagram of an auxiliary handle according to an embodiment of the present invention;

Fig. 2 is the structural exploded view of the auxiliary handle shown in Fig. 1;

Fig. 3 is the schematic diagram that the auxiliary handle shown in Fig. 1 is installed in the electric tool;

4 is a schematic structural diagram of an auxiliary handle according to another embodiment of the present invention;

Fig. 5 is the structural exploded view of the auxiliary handle shown in Fig. 4;

FIG. 6 is a schematic diagram of the auxiliary handle shown in FIG. 4 being installed on the power tool.

detailed description

The specific embodiments of the present invention will be described in further detail below with reference to the accompanying drawings and embodiments. The following examples are intended to illustrate the present invention, but not to limit the scope of the present invention.

Referring to FIGS. 1 to 3 , the auxiliary handle 10 shown in the first embodiment of the present invention is detachably mounted on a power tool 20 , and the power tool 20 may be a hand-held tool such as an electric drill or a gun drill. The hand-held power tool 20 includes The casing 203 , the working mechanism 201 and the handle 202 located under the working mechanism 201 for holding, the casing 203 includes a motor (not shown), and the auxiliary handle 10 is clamped on the casing 203 of the working mechanism 201 of the power tool 20 . The auxiliary handle 10 includes a connecting rod 3, a grip housing 1 mounted on the connecting rod 3 for the user to hold, a clamping mechanism 2 mounted on the connecting rod 3 to hold the power tool 20, and a gripping mechanism 2 mounted on the connecting rod 3 to hold the power tool 20. The locking member 4 on the rod 3 is locked on the power tool 20 by driving the clamping mechanism 2 . The connecting rod 3 is a rod-shaped structure, and the connecting rod 3 includes a support section 31 which is a polished rod.

The clamping mechanism 2 includes a first clamping arm 21 and a second clamping arm 22 which are oppositely arranged to realize clamping on the housing 203 of the working mechanism 201 . At least one of the first clamping arm 21 and the second clamping arm 22 can move along the axis X direction of the connecting rod 3 (the axis X direction is the longitudinal direction of the connecting rod 3), wherein the second clamping arm 22 is relative to the first clamping arm 22. A clamping arm position 21 is located on the side away from the grip casing 1 . The installation structure of the first clamping arm 21, the second clamping arm 22 and the connecting rod 3 can adopt a conventional movable connection method including a locking function in the prior art. . The second clamping arm 22 is provided with a sliding block matched with the sliding groove. In this embodiment, the first clamping arm 21 and the second clamping arm 22 are sleeved on the support section 31 of the connecting rod 3 . Specifically, the first clamp arm 21 has a first sleeve portion 211 sleeved on the support section 31 of the connecting rod 3 and a first claw portion 212 extending downward from the first sleeve portion 211. The second clamp The arm 22 has a second sleeve portion 221 sleeved on the support section 31 of the connecting rod 3 and a second claw portion 222 extending downward from the second sleeve portion 221 . The first sleeve portion 211 and the second sleeve portion 221 are in clearance fit with the support section 31 . The first claw portion 212 and the second claw portion 222 have a first inner wall 2121 and a second inner wall 2221 which are arranged opposite to each other and are used to hold the housing 203 of the power tool 20. In order to make the auxiliary handle 10 more firmly hold the power tool 20, The first inner wall 2121 and the second inner wall 2221 are further provided with a first card slot 213 and a second card slot 223 respectively. The first sleeve portion 211 and the second sleeve portion 221 have a first inner abutment surface 2111 and a second inner abutment surface 2211 arranged oppositely, and a first outer abutment surface 2112 and a second outer abutment surface 2212 arranged opposite to each other.

The holding housing 1 and the locking member 4 are disposed on opposite sides of the clamping mechanism 2 , which can make it more convenient for the user to apply force when operating the auxiliary handle 10 to fine-tune the clamping mechanism 2 . The first clamp arm 21 and the second clamp arm 22 have a released state and a locked state. The holding housing 1 abuts against the first outer abutting surface 2112 of the first clamping arm 21 , and the locking member 4 abuts against the second outer abutting surface 2212 of the second clamping arm 22 . At this time, the first inner wall 2121 and the second inner wall The 2221 is clamped on both sides of the casing 203 of the working head 201 , and the first card groove 213 and the second card groove 223 are fixed with the protrusions (not numbered) of the casing 203 . However, at this time, the clamping force of the first inner wall 2121 and the second inner wall 2221 relative to the casing is small, the casing 203 and the first inner wall 2121 and the second inner wall 2221 will be loose, and if there is an external force, the casing 203 and the first inner wall 2221 may be loosened. The inner wall 2121 and the second inner wall 2221 are separated, and this state is the release state. After the locking member 4 clamps the power tool 20 between the first clamping arm 21 and the second clamping arm 22, the locking member 4 presses against and pushes the second clamping arm 22 to move in the direction of the first clamping arm 21 and pushes the The second clamping arm is locked relative to the movement position of the first clamping arm, and the movement of the second clamping arm 22 toward the direction of the first clamping arm 21 may be sliding or rotational movement, thereby increasing the first inner wall 2121 and the second inner wall The clamping force of 2221 relative to the casing, the casing 203 cannot be separated from the first inner wall 2121 and the second inner wall 2221, this state is a locked state, of course, the locking member 4 can also be set to pull the first clamping arm 21 toward the second clamping The arm 22 moves in the direction, so that the first clamping arm 21 and the second clamping arm 22 are locked. The locking member 4 is a locking wrench 4 that is rotatably connected with the connecting rod 3. The locking wrench 4 has a cam portion 41 and a handle portion 42 that is connected to the cam portion 41 and extends upward. The rotation axis of the cam portion 41 is perpendicular to the connecting rod 3. axis X. In the radial direction of the connecting rod 3 , the cam portions 41 are clamped on both sides of the connecting rod 3 . The cam portion 41 includes a base circle 411 and an arch 412 formed by protruding outward from one side of the base circle 411 . It should be noted that the distance from the rotation axis to the edge of the base circle 411 is smaller than the distance from the rotation axis to the edge of the arch 412 . A raised portion 43 is formed on one end of the handle portion 42 away from the cam portion 41 to facilitate application of force. By turning over the locking wrench 4, the cam portion 41 presses against the second clamping arm 22 to push the second clamping arm 22 to move relative to the first clamping arm 21, the first clamping arm 21 and the second clamping arm 22 are in a locked state, and the auxiliary handle 10 Fixed on the power tool 20 , specifically, the arch 412 of the cam portion 41 abuts against the second outer abutting surface 2212 . When the first clamping arm 21 and the second clamping arm 22 are switched from the locked state to the released state, an external force is applied to the handle portion 42, so that the handle portion 42 rotates in the direction away from the second clamping arm 22, the cam portion 41 rotates, and the first clamp portion 42 rotates. The two outer abutting surfaces 2212 are separated from the arch 412 .

In this embodiment, the locking wrench 4 is installed on one end of the connecting rod 3, the locking wrench 4 and the connecting rod 3 are connected by a cylindrical pin, and the locking wrench 4 and the connecting rod 3 are provided with shaft holes 44, 33 , the locking wrench 4 and the connecting rod 3 are connected through a cylindrical pin through the locking wrench 4 and the shaft hole 44 on the connecting rod 3 . In other embodiments, the locking wrench 4 and the connecting rod 3 can also be connected in other ways, so that the locking wrench 4 can be rotated around the connecting rod 3. For example, one of the locking wrench 4 and the connecting rod 3 is provided with a shaft. One part (not numbered), and the other is provided with a shaft hole 44 which is matched with the shaft part.

In order to make the first clamping arm 21 and the second clamping arm 22 release the power tool 20 quickly, in this embodiment, an elastic member 5 is provided between the first clamping arm 21 and the second clamping arm 22 . Specifically, the elastic member 5 is sleeved on the support section 31, and both ends of the elastic member 5 abut against the first sleeve portion 211 and the second sleeve portion 221. In detail, one end of the elastic member 5 abuts against the first inner abutment surface 2111, the other end abuts against the second inner abutting surface 2211. After the force of the locking member 4 against the second clamping arm 22 is removed, the elastic member 5 pushes the first clamping arm 21 and the second clamping arm 22 to move in the opposite direction.

In this embodiment, in order to facilitate the disassembly of the auxiliary handle 10 from the housing 203 , that is, when the first clamping arm 21 and the second clamping arm 22 are in the released state, the distance between the first clamping arm 21 and the second clamping arm 22 is increased. A clamping opening is provided to facilitate the disassembly of the auxiliary handle 10 from the housing 203. In this embodiment, the holding housing 1 can move relative to the connecting rod 3 in the direction of the axis X of the connecting rod 3, and the moving distance is greater than that of the locking wrench in the locked state. 4: The distance the second clamping arm 22 moves relative to the first clamping arm 21 . In order to facilitate clamping the auxiliary handle on the power tool, the auxiliary handle 10 further includes a pusher 6 threadedly connected with the connecting rod 3 , and the grip housing 1 is sleeved on the pusher 6 . In detail, the connecting rod 3 includes an external thread segment 32 formed on one end of the support segment 31 , and the external thread segment 32 and the locking wrench 4 are located at two ends of the support segment 31 respectively. Wherein, the length of the support section 31 is greater than the length of the external thread section 32 . The pusher 6 includes a pipe body 62 and a knob block 61 arranged on one end of the pipe body 62. One end of the pipe body 62 away from the knob block 61 is connected to the external thread section 32 of the connecting rod 3, and the holding shell 1 is sleeved on the pipe. body 62. The knob block 61 is provided with a stop surface 63 facing the first clamp arm 21 , and the stop surface 63 restricts the grip housing 1 from moving in a direction away from the first clamp arm 21 . In this embodiment, the knob block 61 is embedded in the holding shell 1, and rotating the knob block 61 can push the holding shell 1 to move the first clamping arm 21 toward the second clamping arm 22. The outer end surface of the knob block 61 ( (not numbered) is concavely formed with a word groove (not shown) or a cross groove (not shown), so as to facilitate the cooperation with the screwdriver. Of course, the knob block 61 can also protrude out of the holding housing 1 , and the knob block 61 is provided with anti-slip threads, so that the user is more convenient and labor-saving when operating the pusher 6 .

The holding housing 1 is a long handle-like structure, and the axis X of the holding housing 1 coincides with the axis X of the connecting rod 3 . Specifically, the holding housing 1 includes a holding sleeve 11 sleeved on the pipe body 62 , an extension sleeve 13 extending along one side of the holding sleeve 11 toward the first clamping arm 21 , and a self-holding sleeve The shielding piece 12 is formed by extending radially outward from the joint portion of the barrel 11 and the extension sleeve 13 . The holding sleeve 11 extends to the connecting rod 3 and partially shields the external thread section 32 , the axis X of the holding sleeve 11 overlaps with the axis X of the connecting rod 3 , and the rotating block 61 is embedded in the holding sleeve 11 . The extension sleeve 13 abuts against the first outer abutting surface 2112 of the first clamping arm 21 . Of course, in other embodiments, the holding housing 1 can also be set in an L-shaped structure or the like according to the holding direction.

Referring to FIGS. 4 to 6 , the auxiliary handle 10 ′ shown in the second embodiment of the present invention has substantially the same structure as the auxiliary handle 10 in the first embodiment, the difference is that the locking member 4 ′ is threadedly connected to the connecting rod 3 ′ Knob 7', without pusher. Specifically: the connecting rod 3' includes a support section 31', and external thread sections 32' and stop blocks 34' formed on both ends of the support section 31'. One end of the support section 31' having a stopper 34' is inserted into the holding housing 1', and the stopper 34' restricts the movement of the holding housing 1' in a direction away from the first clamping arm 21'. The external thread segment 32' is connected with the knob 7', and an internal thread segment (not numbered) that is matched with the external thread segment 32' is formed in the knob 7'. The outer surface of the knob 7' is provided with a non-slip thread 71' to make it more convenient for the user to apply force. When the first clamping arm 21' and the second clamping arm 22' are in the locked state, the knob 7' abuts against the second outer abutting surface 2212', and the holding housing 1' abuts against the first outer abutting surface 2112'. Tightening the knob 7' or loosening the knob 7' can make the knob 7' move axially along the axis X of the connecting rod 3, when the first clamping arm 21' and the second clamping arm 22' are switched between the locking state and the releasing state , just tighten the knob 7' or loosen the knob 7'. For example, when the first clamping arm 21' and the second clamping arm 22' are switched from the locked state to the released state, just rotate the knob 7' to make the knob 7' Just move in the direction away from the second clamping arm 22'. In this embodiment, in order to facilitate the disassembly of the auxiliary handle 10' from the housing 203', that is, when the first clamping arm 21' and the second clamping arm 22' are in the released state, the first clamping arm 21' and the second clamping arm 22' are enlarged. The clamping opening between the second clamping arms 22', in this embodiment, the movable distance of the knob 7' in the direction away from the second clamping arm 22' is greater than the moving distance in the direction close to the second clamping arm 22'. Of course, the first clamping arm 21' can also be fixed with the connecting rod 3'.

The technical features of the above embodiments can be combined arbitrarily. For the sake of brevity, all possible combinations of the technical features in the above embodiments are not described. However, as long as there is no contradiction in the combination of these technical features, all It is considered to be the range described in this specification.

The above examples only represent several embodiments of the present invention, and the descriptions thereof are specific and detailed, but should not be construed as a limitation on the scope of the invention patent. It should be pointed out that for those of ordinary skill in the art, without departing from the concept of the present invention, several modifications and improvements can also be made, which all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention should be subject to the appended claims.

Claims

An auxiliary handle, comprising a connecting rod, a holding shell mounted on the connecting rod for a user to hold, and a clamping mechanism mounted on the connecting rod for clamping a power tool, the clamping mechanism It includes a first clamp arm and a second clamp arm that are relatively arranged to clamp the power tool, and at least one of the first clamp arm and the second clamp arm can move along the axis direction of the connecting rod. The auxiliary handle further includes a locking piece installed on the connecting rod; the holding shell and the locking piece are arranged on opposite sides of the clamping mechanism, and the locking piece can operably drive the second The clamp arm moves toward the first clamp arm and locks the movement position of the second clamp arm relative to the first clamp arm.
The auxiliary handle according to claim 1, wherein the second clamping arm is located at a side away from the holding housing relative to the first clamping arm.
The auxiliary handle according to claim 1, wherein the locking member is rotatably mounted on the connecting rod.
The auxiliary handle according to claim 1, wherein an elastic member is arranged between the first clamping arm and the second clamping arm, and the force of the locking member against the second clamping arm After being withdrawn, the elastic member pushes the second clamping arm to move in the opposite direction.
The auxiliary handle according to claim 4, wherein the first clamping arm has a first sleeve part sleeved on the connecting rod and a first sleeve part extending downward from the first sleeve part. a claw part, the second clamping arm has a second sleeve part sleeved on the connecting rod and a second claw part extending downward from the second sleeve part, the elastic member The elastic member is sleeved on the connecting rod, and both ends of the elastic piece abut against the first sleeve part and the second sleeve part.
The auxiliary handle according to claim 1, wherein the locking member is a locking wrench rotatably connected with the connecting rod, the locking wrench has a cam portion and a handle portion, and the rotation of the cam portion The axis is perpendicular to the axis of the connecting rod.
The auxiliary handle according to claim 6, wherein the holding shell is movable relative to the connecting rod in the axial direction of the connecting rod.
The auxiliary handle according to claim 7, wherein the auxiliary handle further comprises a pusher, the pusher includes a tube body and a knob block, and an end of the tube body away from the knob block is connected to the connecting rod threaded connection, the holding shell is sleeved on the pipe body.
The auxiliary handle according to claim 8, wherein a stop surface is provided on the push member, and the stop surface restricts the holding housing from moving in a direction away from the first clamping arm.
The auxiliary handle according to claim 1, wherein the locking member is a knob threadedly connected to the connecting rod.
The auxiliary handle according to claim 10, wherein the connecting rod has a stopper, and one end of the connecting rod with the stopper is inserted into the holding housing.
An electric tool includes a handle and a casing, and the casing includes a motor and a working mechanism, wherein the electric tool further includes the auxiliary handle according to any one of claims 1 to 10.
An installation method of an auxiliary handle, the auxiliary handle comprises a connecting rod, a holding shell mounted on the connecting rod for a user to hold, and a clamping device mounted on the connecting rod for holding a power tool The clamping mechanism includes a first clamping arm and a second clamping arm that are oppositely arranged to clamp the power tool, and at least one of the first clamping arm and the second clamping arm can be along the axis direction of the connecting rod moving, the auxiliary handle further includes a locking piece installed on the connecting rod, the holding shell and the locking piece are relatively arranged on both sides of the clamping mechanism, and it is characterized in that, the installation method includes the following steps: step:

Step 1: attaching the first clamp arm and the second clamp arm to the power tool;

Step 2: Operate the locking member so that the second clamping arm moves toward the first clamping arm and locks the moving position of the second clamping arm relative to the first clamping arm.
The method for installing an auxiliary handle according to claim 13, wherein the operating the locking member comprises: rotating the locking member so that the locking member drives the second clamping arm, and the locking member The axis of rotation is perpendicular to the axis of the connecting rod.
The method for installing an auxiliary handle according to claim 13, wherein the operating the locking member comprises: rotating the locking member so that the locking member moves along the axis of the connecting rod to drive the second locking member clamp arm.