Electric tool combination and auxiliary handle

Abstract

The invention discloses an electric tool combination and an auxiliary handle. The electric tool combination comprises an electric tool and an auxiliary handle. The electric tool comprises a shell, the shell comprises a first shell body and a first holding part, and the first holding part is formed or connected to the first shell body; the auxiliary handle comprises a second holding part, a clamping assembly and a locking assembly, and the clamping assembly is connected with the second holding part; the clamping assembly comprises a first clamping arm and a second clamping arm which are oppositely arranged to clamp the first shell; the locking assembly comprises a locking state for limiting the relative movement of the clamping assembly and the first shell and a releasing state for allowing the relative movement of the clamping assembly and the first shell; the locking assembly comprises an operating part, and when the position state of the operating part is changed, the locking state and the releasing state of the locking assembly are switched; and when the locking assembly is switched to the release state, the operating piece applies driving force to at least one of the first clamping arm and the second clamping arm, so that the first clamping arm and the second clamping arm are far away from each other.

Description

Technical Field

[0001] The present application relates to an electric tool combination, and in particular to an electric tool combination and an auxiliary handle. Background Art

[0002] In the related art, a power tool, such as a screwdriver, electric drill, hammer drill, impact driver drill, etc., has a grip portion, and during operation, the user usually holds the grip portion with one hand to control the power tool to work. Since the power tool has a certain weight and there is a certain distance between the grip portion and the working accessories that output torque, especially a pistol-type power tool, when the output torque is large, it is difficult to ensure stability by holding the power tool with only one hand, and the hand-swinging phenomenon or the hand-twisting phenomenon often occurs, causing damage to the human arm.

[0003] In related products, an auxiliary handle or side handle is provided on the power tool so that the user can support the power tool with both hands during operation. The auxiliary handle or side handle is usually installed on the housing of the power tool by threaded connection or using an auxiliary tool. This connection method has the problem of complicated steps, time-consuming and labor-intensive installation and removal of the auxiliary handle.

[0004] This section provides background information related to the present application which is not necessarily prior art. Summary of the invention

[0005] One object of the present application is to solve or at least alleviate part or all of the above problems. To this end, one object of the present application is to provide a power tool combination and an auxiliary handle.

[0006] In order to achieve the above objectives, this application adopts the following technical solutions:

[0007] A power tool combination includes a power tool and an auxiliary handle; the power tool includes: a housing, including a first shell body that is basically tubular and a first gripping portion for gripping, the first gripping portion being formed on or connected to the first shell body; the auxiliary handle includes: a second gripping portion; a clamping assembly connected to the second gripping portion; the clamping assembly includes a first clamping arm and a second clamping arm that are relatively arranged to clamp the first shell body; a locking assembly includes a locking state that limits the relative movement of the clamping assembly and the first shell body and a releasing state that allows the first clamping arm and the second clamping arm to move away from each other to allow the clamping assembly and the first shell body to move relative to each other; the locking assembly includes an operating member, and when the position state of the operating member changes, the locking state and the releasing state of the locking assembly are switched; when the locking assembly is switched to the releasing state, the operating member applies a driving force to at least one of the first clamping arm and the second clamping arm to allow the first clamping arm and the second clamping arm to move away from each other.

[0008] In some embodiments, at least one of the first clamping arm and the second clamping arm is connected to the operating member.

[0009] In some embodiments, the locking assembly further includes a connecting member, which connects the first clamping arm and the second clamping arm and is driven by the operating member.

[0010] In some embodiments, the operating member includes a first position corresponding to a locked state and a second position corresponding to a released state, and the operating member rotates around a second axis to switch between the first position and the second position, and the second axis intersects with an extension direction of the second grip portion.

[0011] In some embodiments, the connecting member is rotatably connected to the operating member, and the connecting member can rotate relative to the operating member around a third axis, and the third axis is eccentrically arranged with respect to the second axis.

[0012] In some embodiments, the first housing is configured with a longitudinal axis, and the locking assembly is located above the longitudinal axis.

[0013] In some embodiments, the first end of the connecting member is connected to the first clamping arm, and the second clamping arm is provided with a limiting member. When the operating member is in the first position, the limiting member limits the second end of the connecting member.

[0014] In some embodiments, when the position state of the operating member changes, the operating member drives at least one of the first clamping arm and the second clamping arm to slide along the extension direction of the second gripping portion.

[0015] In some embodiments, when the position state of the operating member changes, the position state of the second grip portion relative to the housing does not change.

[0016] In some embodiments, when the position state of the operating member changes, the relative position of the operating member with respect to the second grip portion changes.

[0017] An auxiliary handle is suitable for being connected to a first shell of an electric tool which is basically tubular; the auxiliary handle comprises: a second gripping portion; a clamping assembly connected to the second gripping portion; the clamping assembly comprises a first clamping arm and a second clamping arm which are arranged relatively to each other to clamp the first shell; a locking assembly comprises a locking state for limiting the relative movement of the clamping assembly and the first shell and a releasing state for moving the first clamping arm and the second clamping arm away from each other to allow the clamping assembly and the first shell to move relative to each other; the locking assembly comprises an operating member, and when the position state of the operating member changes, the locking state and the releasing state of the locking assembly are switched; when the locking assembly is switched to the releasing state, the operating member applies a driving force to at least one of the first clamping arm and the second clamping arm to move the first clamping arm and the second clamping arm away from each other.

[0018] The benefits of the present application are as follows: when the locking assembly is in a locked state, the first clamping arm and the second clamping arm clamp the first shell, and the user can hold the first gripping part with one hand and the second gripping part with the other hand, and the holding stability is improved by holding different parts with two hands; when the auxiliary handle needs to be disassembled, by changing the position of the operating member, the operating member applies a driving force to at least one of the first clamping arm and the second clamping arm, so that the first clamping arm and the second clamping arm are separated from each other, and the locking assembly is switched from the locked state to the released state, and the first clamping arm and the second clamping arm release the first shell, without adding additional components to provide a force to separate the first clamping arm and the second clamping arm. By changing the position state of the operating member, the first clamping arm and the second clamping arm can be driven to approach or separate from each other, so as to clamp or release the first shell, which is convenient to operate, saves time and effort, and can quickly disassemble and assemble the auxiliary handle with one hand. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a structural schematic diagram of the electric tool assembly provided by the first embodiment of the present application;

[0020] Figure 2 is a side view of the electric tool assembly provided by the first embodiment of the present application;

[0021] Figure 3 is a schematic diagram of the exploded structure of the electric tool assembly provided in the first embodiment of the present application;

[0022] Figure 4 It is a partial structural schematic diagram of an auxiliary handle provided by the first embodiment of the present application, and the locking assembly is in a released state;

[0023] Figure 5 is a structural schematic diagram of an auxiliary handle provided in the first embodiment of the present application;

[0024] Figure 6 It is a partial structural schematic diagram of an auxiliary handle provided in the first embodiment of the present application, and the locking assembly is in a locked state;

[0025] Figure 7 is a cross-sectional view of an auxiliary handle provided in the first embodiment of the present application;

[0026] Figure 8 is a partial structural cross-sectional view of an auxiliary handle provided in the first embodiment of the present application;

[0027] Fig. 9 It is a partial structural exploded schematic diagram of an auxiliary handle provided in the first embodiment of the present application;

[0028] Fig.10 is a schematic structural diagram of another auxiliary handle provided in the first embodiment of the present application;

[0029] Fig.11 is a partial structural schematic diagram of another auxiliary handle provided in the first embodiment of the present application;

[0030] Fig.12 is a structural schematic diagram of another auxiliary handle provided in the first embodiment of the present application;

[0031] Fig.13 is a partial structural schematic diagram of another auxiliary handle provided in the first embodiment of the present application;

[0032] Fig.14 is a structural schematic diagram of an auxiliary handle provided in the second embodiment of the present application, wherein the limiting space has a channel portion;

[0033] Fig.15 It is a partial structural schematic diagram of an auxiliary handle provided in the second embodiment of the present application, wherein the limiting space has a channel portion;

[0034] Fig.16 is a schematic structural diagram of another auxiliary handle provided in the second embodiment of the present application, wherein the limiting space has a channel portion;

[0035] Fig.17 It is a partial structural schematic diagram of another auxiliary handle provided in the second embodiment of the present application, wherein the limiting space has a channel portion;

[0036] Fig.18 is a structural schematic diagram of another auxiliary handle provided in the second embodiment of the present application, wherein the limiting space has a channel portion;

[0037] Fig.19 is a partial structural schematic diagram of another auxiliary handle provided in the second embodiment of the present application;

[0038] Fig. 20 is a structural schematic diagram of another auxiliary handle provided in the second embodiment of the present application, wherein the limiting space has a channel portion;

[0039] Fig.21 is a partial structural schematic diagram of another auxiliary handle provided in the second embodiment of the present application;

[0040] Fig. 22 It is a structural schematic diagram of an auxiliary handle provided in the second embodiment of the present application, wherein the limiting space has no channel portion;

[0041] Fig.23 It is a partial structural schematic diagram of an auxiliary handle provided in the second embodiment of the present application, wherein the limiting space has no channel portion;

[0042] Fig.24It is a schematic diagram of the structure of another auxiliary handle provided in the second embodiment of the present application, wherein the limiting space has no channel portion;

[0043] Fig.25 It is a partial structural diagram of another auxiliary handle provided in the second embodiment of the present application, wherein the limiting space has no channel portion;

[0044] Fig.26 is a schematic structural diagram of an auxiliary handle provided in the third embodiment of the present application;

[0045] Fig. 27 is a partial structural exploded schematic diagram of an auxiliary handle provided in a third embodiment of the present application;

[0046] Fig.28 is a side view of a power tool assembly provided by a fourth embodiment of the present application;

[0047] Fig.29 is a top view of an electric tool assembly provided by a fourth embodiment of the present application;

[0048] Fig.30 is a structural schematic diagram of another electric tool assembly provided in a fourth embodiment of the present application;

[0049] Fig.31 It is a top view of another electric tool combination provided by the fourth embodiment of the present application. DETAILED DESCRIPTION

[0050] Before any embodiments of the application are explained in detail, it is to be understood that the application is not limited in its application to the details of construction and the arrangement of components set forth in the following description or illustrated in the above drawings.

[0051] In this application, the terms "comprises", "includes", "has" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device that includes a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of more restrictions, an element defined by the sentence "comprises a ..." does not exclude the presence of other identical elements in the process, method, article or device that includes the element.

[0052] In this application, the term "and / or" is a description of the association relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this application generally indicates that the related objects before and after are in an "and / or" relationship.

[0053] In the present application, the terms "connect", "combine", "couple", and "install" may refer to direct connection, combination, coupling, or installation, or indirect connection, combination, coupling, or installation. For example, direct connection refers to two parts or components being connected together without the need for an intermediate piece, and indirect connection refers to two parts or components being connected to at least one intermediate piece respectively, and the two parts or components being connected via the intermediate piece. In addition, "connect" and "couple" are not limited to physical or mechanical connections or couplings, and may include electrical connections or couplings.

[0054] In the present application, it will be understood by those of ordinary skill in the art that relative terms (e.g., "about," "approximately," "substantially," etc.) used in conjunction with quantities or conditions include the values ​​and have the meaning indicated by the context. For example, the relative terms include at least the degree of error associated with the measurement of a specific value, the tolerances caused by manufacturing, assembly, and use associated with a specific value, and the like. Such terms should also be considered to disclose a range defined by the absolute values ​​of the two endpoints. Relative terms may refer to plus or minus a certain percentage (e.g., 1%, 5%, 10% or more) of the indicated value. Numerical values ​​that do not use relative terms should also be disclosed as specific values ​​with tolerances. In addition, "substantially" may refer to plus or minus a certain degree (e.g., 1 degree, 5 degrees, 10 degrees or more) on the basis of the indicated angle when expressing a relative angular position relationship (e.g., substantially parallel, substantially perpendicular).

[0055] In this application, it will be understood by those skilled in the art that the function performed by a component can be performed by one component, multiple components, one part, or multiple parts. Similarly, the function performed by a part can also be performed by one part, one component, or a combination of multiple parts.

[0056] In the present application, the terms "upper", "lower", "left", "right", "front", "back" and other directional words are described based on the orientation and positional relationship shown in the accompanying drawings, and should not be understood as limiting the embodiments of the present application. In addition, in the context, it is also necessary to understand that when it is mentioned that an element is connected to another element "upper" or "lower", it can not only be directly connected to another element "upper" or "lower", but also indirectly connected to another element "upper" or "lower" through an intermediate element. It should also be understood that directional words such as upper side, lower side, left side, right side, front side, back side, etc. not only represent the positive orientation, but can also be understood as the lateral orientation. For example, the bottom can include directly below, lower left, lower right, lower front, and lower back, etc.

[0057] The electric tool combination provided in the present application includes electric tools, and the electric tools can be screwdrivers, hammer drills, drills, impact driver drills, impact wrenches, nail guns, angle grinders, angle drills, etc.

[0058] See also Figures 1 to 3 In the first embodiment of the present application, an electric drill 100 is used as an example to illustrate an electric tool. The electric drill 100 includes a power supply. The power supply is used to provide electrical energy to the electric drill 100. In this embodiment, the power supply is a battery pack 110, and the battery pack 110 cooperates with a corresponding power supply circuit to power the corresponding components in the electric drill 100. Those skilled in the art should understand that the power supply is not limited to the scenario of using the battery pack 110, and can also be powered by AC power, AC power, and corresponding rectification, filtering and voltage regulation circuits to achieve power supply to the corresponding components in the machine. For the convenience of subsequent description, the battery pack 110 will be used instead of the power supply, but it cannot be used as a limitation of the present invention.

[0059] The electric drill 100 includes a housing 120, a motor and an output mechanism 130. The housing 120 includes a first shell 121 and a first gripping portion 122 for gripping, and the first gripping portion 122 is formed or connected to the first shell 121. The first shell 121 includes a motor housing for accommodating a motor and an output housing for accommodating at least part of the output mechanism 130, and the output housing is connected to the front end of the motor housing. The first gripping portion 122 is for the user to grip, and the first gripping portion 122 forms a T-shaped or L-shaped structure with the motor housing, which is convenient for the user to grip and operate. A battery pack 110 is connected to one end of the first gripping portion 122. The battery pack 110 is detachably connected to the first gripping portion 122.

[0060] The electric drill 100 further includes a switch 140, which is mounted on the first grip portion 122. When the user holds the first grip portion 122, the switch 140 can be triggered relatively conveniently. The switch 140 can be set as a main switch for starting the electric drill 100.

[0061] The motor includes a drive shaft (not shown in the figure), and the output mechanism 130 is used to receive the torque provided by the motor and output the torque. The output mechanism 130 includes an output shaft for connecting a working accessory and driving the working accessory to rotate. When implementing different functions, the front end of the output shaft can be connected to a corresponding working accessory, such as a screwdriver, a drill bit, a sleeve, etc. The output shaft can rotate around the first axis.

[0062] The motor can directly drive the output mechanism 130, or a transmission mechanism can be provided between the motor and the output mechanism 130, and the transmission mechanism is used to realize power transmission between the motor and the output mechanism 130. The motor, the transmission mechanism, and the output mechanism 130 are provided in a motor housing and an output housing.

[0063] The transmission mechanism includes: a planetary gear train for deceleration, and the number of the planetary gear trains can be one or more. The planetary gear train converts the output speed of the motor according to a certain transmission ratio to achieve a suitable torque. At the same time, the transmission mechanism also includes a shift assembly to achieve multi-speed output through multiple sets of gears with different transmission ratios. Because the working principle of planetary gear deceleration and the deceleration generated by this transmission mechanism have been fully disclosed to professionals in this field, a detailed description is omitted here for the purpose of brevity of the specification.

[0064] In this embodiment, the transmission mechanism further includes an impact assembly for providing an impact force to the output shaft. The transmission mechanism further includes a locking assembly to implement a shaft locking function, for locking the output shaft when the output shaft reversely transmits torque to the drive shaft. It can be understood that in other alternative embodiments, the transmission mechanism may not be provided with an impact assembly.

[0065] The electric tool assembly further includes an auxiliary handle 200, which is selectively connected to the first housing 121 of the electric tool and is used to clamp or release the first housing 121. The first housing 121 is substantially tubular.

[0066] The auxiliary handle 200 includes a second gripping portion 210, a clamping assembly 220 and a locking assembly 230. The clamping assembly 220 is connected to the second gripping portion 210. The clamping assembly 220 includes a first clamping arm 221 and a second clamping arm 222 that are arranged relatively to clamp the first housing 121. The locking assembly 230 includes a locking state that limits the relative movement of the clamping assembly 220 and the first housing 121 and a releasing state that allows the first clamping arm 221 and the second clamping arm 222 to move away from each other to allow the clamping assembly 220 and the first housing 121 to move relative to each other. The locking assembly 230 includes an operating member 231. When the position state of the operating member 231 changes, the locking state and the releasing state of the locking assembly 230 are switched. When the locking assembly 230 is switched to the releasing state, the operating member 231 applies a driving force to at least one of the first clamping arm 221 and the second clamping arm 222 to make the first clamping arm 221 and the second clamping arm 222 move away from each other.

[0067] When the locking assembly 230 is in a locked state, the first clamping arm 221 and the second clamping arm 222 clamp the first shell 121. The user can hold the first gripping portion 122 with one hand and the second gripping portion 210 with the other hand. By holding different parts with two hands, the holding stability is improved. When the auxiliary handle 200 needs to be disassembled, the position of the operating member 231 is changed so that the operating member 231 applies a driving force to at least one of the first clamping arm 221 and the second clamping arm 222, so that the first clamping arm 221 and the second clamping arm 222 move away from each other, thereby realizing the switching of the locking assembly 230 from a locked state to a released state. The first clamping arm 221 and the second clamping arm 222 release the first shell 121, and there is no need to add additional components to provide a force to move the first clamping arm 221 and the second clamping arm 222 away from each other. On the contrary, when the auxiliary handle 200 needs to be installed, the first clamping arm 221 and the second clamping arm 222 are placed on both sides of the first shell 121. By changing the position of the operating member 231, the operating member 231 applies a driving force to at least one of the first clamping arm 221 and the second clamping arm 222, so that the first clamping arm 221 and the second clamping arm 222 are close to each other, thereby realizing the switching of the locking assembly 230 from the released state to the locked state, and the first clamping arm 221 and the second clamping arm 222 clamp the first shell 121.

[0068] As described above, by changing the position state of the operating member 231, the first clamping arm 221 and the second clamping arm 222 can be driven to move closer to or farther away from each other, thereby clamping or releasing the first shell 121. The operation is convenient, time-saving and labor-saving, and the auxiliary handle 200 can be quickly disassembled and assembled with one hand.

[0069] A first engaging structure 1211 is provided on a first side of the first housing 121, a second engaging structure is provided on a second side of the first housing 121, a first engaging portion 2211 engaged with the first engaging structure 1211 is provided on the first clamping arm 221, and a second engaging portion 2221 engaged with the second engaging structure is provided on the second clamping arm 222. When the first clamping arm 221 and the second clamping arm 222 clamp the first housing 121, the first engaging portion 2211 cooperates with the first engaging structure 1211, and the second engaging portion 2221 cooperates with the second engaging structure, so that the clamping is stable.

[0070] In this embodiment, the first engagement structure 1211 is a first protrusion disposed on the first side of the first shell 121, the second engagement structure is a second protrusion disposed on the second side of the first shell 121, the first engagement portion 2211 is a first groove disposed on the first clamping arm 221, and the second engagement portion 2221 is a second groove disposed on the second clamping arm 222. When the first clamping arm 221 and the second clamping arm 222 clamp the first shell 121, the first protrusion is inserted into the first groove, and the second protrusion is inserted into the second groove. The protrusion cooperates with the groove to increase the contact area, play a limiting role, and make the clamping stable. In other embodiments, the positions of the protrusion and the groove can be interchanged.

[0071] The first shell 121 basically extends along the direction of the first axis, and the direction in which the first clamping arm 221 and the second clamping arm 222 move relative to each other is perpendicular to the first axis, which facilitates clamping of the first shell 121. The second gripping portion 210 basically extends along the direction of the first straight line, and the first straight line intersects the first axis. In this embodiment, the first straight line is perpendicular to the first axis, so that there is a certain distance between the second gripping portion 210 and the working accessory that outputs the torque, ensuring safety. The first axis is defined to extend along the front-to-back direction, and the first straight line extends along the left-to-right direction. Figure 1 In the figure, O1 represents the first axis, and A1 represents the first straight line.

[0072] The first housing 121 is provided with a longitudinal axis, and the locking assembly 230 is located at the top along the direction in which the longitudinal axis extends. The first grip portion 122 extends substantially parallel to the longitudinal axis, the battery pack 110 is disposed at the bottom of the first grip portion 122, and the first housing 121 is disposed at the top of the first grip portion 122. The locking assembly 230 is located above the longitudinal axis to facilitate clamping the first housing 121. The longitudinal axis extends in the up-down direction. Figure 1 A2 represents the longitudinal axis.

[0073] When the position state of the operating member 231 changes, the operating member 231 drives at least one of the first clamping arm 221 and the second clamping arm 222 to slide along the extension direction of the second gripping portion 210. In this embodiment, the operating member 231 can drive the first clamping arm 221 to slide along the extension direction of the second gripping portion 210, and the second clamping arm 222 is fixed. In other embodiments, when the position of the operating member 231 changes, it can drive the first clamping arm 221 and the second clamping arm 222 to move simultaneously to move closer to each other or away from each other.

[0074] At least one of the first clamping arm 221 and the second clamping arm 222 is connected to the operating member 231. In this embodiment, the first clamping arm 221 is connected to the operating member 231, and the change of the position of the operating member 231 can drive the first clamping arm 221 to move away from or closer to the second clamping arm 222. In other embodiments, the second clamping arm 222 is connected to the operating member 231, and the change of the position of the operating member 231 can drive the second clamping arm 222 to move away from or closer to the first clamping arm 221. In other embodiments, both the first clamping arm 221 and the second clamping arm 222 are connected to the operating member 231, and the change of the position of the operating member 231 can drive the second clamping arm 222 and the first clamping arm 221 to move simultaneously, so as to move closer to or away from each other.

[0075] In this embodiment, after the clamping assembly 220 clamps the first shell 121, the position state of the second gripping portion 210 relative to the housing 120 does not change, thereby ensuring the gripping stability of the second gripping portion 210. When the position state of the operating member 231 changes, the position state of the second gripping portion 210 relative to the housing 120 does not change. When the position state of the operating member 231 changes, the relative position of the operating member 231 relative to the second gripping portion 210 changes. The change in the position state of the operating member 231 is not driven by the second gripping portion 210. The operator can hold the second gripping portion 210 with one hand and drive the movement of the operating member 231 with the other hand, which is convenient for operation.

[0076] See also Figures 4 to 8 The auxiliary handle 200 further includes a connecting rod 240, which is disposed at one end of the second gripping portion 210, and the first clamping arm 221 and the second clamping arm 222 are both disposed on the connecting rod 240. At least one of the first clamping arm 221 and the second clamping arm 222 is slidably connected to the connecting rod 240, and when the position of the operating member 231 changes, the first clamping arm 221 and / or the second clamping arm 222 can be driven to slide along the connecting rod 240.

[0077] In this embodiment, the first clamping arm 221 is slidably connected to the connecting rod 240. When the position of the operating member 231 changes, the first clamping arm 221 can be driven to slide along the connecting rod 240. The second clamping arm 222 is fixedly connected to the connecting rod 240, and can be a threaded connection, which is convenient for installation and disassembly. When the first clamping arm 221 slides along the connecting rod 240, the first clamping arm 221 and the second clamping arm 222 are moved closer to each other or away from each other.

[0078] The connecting rod 240 includes a polished rod section 241 and a threaded section 242. The polished rod section 241 is connected to the second gripping portion 210. The threaded section 242 is disposed at one end of the polished rod section 241 away from the second gripping portion 210. The first clamping arm 221 is slidably connected to the polished rod section 241. The second clamping arm 222 is threadedly connected to the threaded section 242. Therefore, the first clamping arm 221 is located between the second clamping arm 222 and the second gripping portion 210. When the position of the operating member 231 changes, the first clamping arm 221 can be driven to slide along the polished rod section 241. In other embodiments, the second clamping arm 222 can also be arranged to be located between the first clamping arm 221 and the second gripping portion 210, and the operating member 231 can drive the first clamping arm 221 to slide.

[0079] The polished rod section 241 is a step rod, including at least one limiting step 243, for limiting the travel of the first clamping arm 221. In some embodiments, the polished rod section 241 includes a telescopic portion, so that the length of the polished rod section 241 can be changed according to demand to meet the requirements of different working conditions for gripping force.

[0080] At least one of the first clamping arm 221 and the second clamping arm 222 is connected to the operating member 231. In this embodiment, the first clamping arm 221 is connected to the operating member 231, and the change in the position of the operating member 231 drives the position of the first clamping arm 221 on the connecting rod 240 to change.

[0081] See also Figure 4 , Figure 6 and Fig. 9 The locking assembly 230 further includes a connecting member 232, which connects the first clamping arm 221 and the second clamping arm 222 and is driven by the operating member 231. When the locking assembly 230 is in a locked state, the connecting member 232 connects the first clamping arm 221 and the second clamping arm 222 so that the first clamping arm 221 and the second clamping arm 222 clamp the first housing 121. By changing the position of the operating member 231, the connecting member 232 can be driven to move so that the first clamping arm 221 and the second clamping arm 222 are disconnected, so that the first clamping arm 221 and the second clamping arm 222 are separated from each other.

[0082] In this embodiment, by rotating the operating member 231 to change the position state of the operating member 231, the user can hold the second grip portion 210 with one hand and rotate the operating member 231 with the other hand, which is convenient for operation. The operating member 231 includes a first position corresponding to a locked state and a second position corresponding to a released state. The operating member 231 rotates around a second axis to switch between the first position and the second position. The second axis intersects with the extension direction of the second grip portion 210. The second axis is represented by O2 in the drawings.

[0083] The operating member 231 is connected to the first clamping arm 221 via a second shaft, the axis of which is the second axis. In this embodiment, the second axis is substantially perpendicular to the first straight line, so that the force applied to the operating member 231 is substantially along the first straight line, which facilitates force application.

[0084] The operating member 231 drives the connecting member 232, which can be directly driven or indirectly driven. In this embodiment, the connecting member 232 is directly connected to the operating member 231. In other embodiments, the connecting member 232 and the operating member 231 can be connected through a transfer rod.

[0085] The connecting member 232 is rotatably connected to the operating member 231, and the connecting member 232 can rotate relative to the operating member 231 around a third axis, and the third axis is eccentrically arranged with respect to the second axis. The third axis is indicated by O3 in the drawings.

[0086] When the operating member 231 is in the first position, the locking assembly 230 is in a locked state, and the connecting member 232 connects the first clamping arm 221 and the second clamping arm 222 so that the first clamping arm 221 and the second clamping arm 222 clamp the first shell 121; in the process of rotating the operating member 231 from the first position to the second position, the operating member 231 rotates around the second axis, driving the connecting member 232 to rotate around the third axis, so that the first clamping arm 221 and the second clamping arm 222 are disconnected, so that the first clamping arm 221 and the second clamping arm 222 are away from each other.

[0087] The first end of the connecting member 232 is connected to the first clamping arm 221, and the second clamping arm 222 is provided with a limiting member 233. When the operating member 231 is in the first position, the limiting member 233 limits the second end of the connecting member 232. In the process of rotating the operating member 231 from the first position to the second position, the operating member 231 drives the connecting member 232 to move, so that the second end of the connecting member 232 is disengaged from the limiting member 233, so that the first clamping arm 221 and the second clamping arm 222 are disconnected.

[0088] The limiting member 233 provided in this embodiment has a limiting groove 2331, and the limiting groove 2331 is located on the side of the limiting member 233 away from the operating member 231. The connecting member 232 provided in this embodiment is annular, including two first connecting arms 2321 parallel to each other and two second connecting arms 2322 parallel to each other, one first connecting arm 2321 is rotatably connected to the operating member 231, and the other first connecting arm 2321 can be engaged with the limiting groove 2331, and the two second connecting arms 2322 are both extended in an arc shape to prevent interference during the rotation process.

[0089] When the locking assembly 230 is in the locked state, the second end of the connecting member 232 is inserted into the limiting groove 2331, and the operating member 231 is in the first position. The operating member 231 tightens the connecting member 232, so that the connecting member 232 and the limiting member 233 are stably engaged. When the locking assembly 230 is switched to the released state, the operating member 231 is rotated so that the connecting member 232 moves away from the limiting groove 2331 to disengage from the limiting member 233. The operating member 231 is pulled to drive the first clamping arm 221 to slide along the connecting rod 240, so that the first clamping arm 221 and the second clamping arm 222 are separated from each other. When the locking assembly 230 is switched to the locked state, the operating member 231 is rotated so that the second end of the connecting member 232 is sleeved on the limiting member 233, and then the operating member 231 is rotated in the opposite direction so that the second end of the connecting member 232 is clamped into the limiting groove 2331. When the operating member 231 is rotated to the first position, the connecting member 232 and the limiting member 233 are clamped.

[0090] Figures 1 to 13 The first embodiment of the present application is shown, and the operating member 231 includes a support portion 2311 and an operating portion 2312. One end of the support portion 2311 is connected to the first clamping arm 221, and the other end of the support portion 2311 is provided with the operating portion 2312. A limiter 233 is provided. Along the direction parallel to the second axis, the limiter 233 has a certain thickness so that the connection member 232 has a larger contact area when the limiter 233 is engaged. Among them, the support portion 2311 is made of metal, and the operating portion 2312 is made of plastic, which is easy to hold.

[0091] See also Fig.10 and Fig.11 The operating member 231 includes a support portion 2311, one end of the support portion 2311 is connected to the first clamping arm 221, and the other end of the support portion 2311 is for the user to hold. Two or more limit members 233 are provided. The limit members 233 are arranged at intervals along a direction parallel to the second axis.

[0092] In some embodiments, the operating member 231 includes a support portion 2311 and an operating portion 2312. One end of the support portion 2311 is connected to the first clamping arm 221, and the other end of the support portion 2311 is provided with the operating portion 2312 for easy holding. Two or more limit members 233 are provided. The limit members 233 are arranged at intervals along a direction parallel to the second axis.

[0093] The limiting member 233 and the second clamping arm 222 may be integrally formed or detachably connected. Fig.12 and Fig.13The limiting member 233 is a limiting plate, and the limiting groove 2331 is formed by bending the limiting plate. The limiting member 233 and the second clamping arm 222 are detachably connected by screws, which is convenient for assembly and replacement.

[0094] Figures 14 to 25 A second embodiment of the present application is shown, in which the limiting member 233 defines a limiting space 2332 , and the second end of the connecting member 232 can be displaced in the limiting space 2332 along the sliding direction of the first clamping arm 221 and can abut against the inner wall of the limiting space 2332 .

[0095] When the locking assembly 230 is switched to the released state, the operating member 231 is rotated to cause the connecting member 232 to move away from the first clamping arm 221. When the connecting member 232 abuts against the inner wall of the limiting space 2332, since the limiting member 233 is fixed to the second clamping arm 222, continuing to rotate the operating member 231 will cause the force to be transmitted in the opposite direction to the first clamping arm 221, causing the first clamping arm 221 to move away from the second clamping arm 222. The first clamping arm 221 and the second clamping arm 222 can be moved away from each other without pulling the operating member 231.

[0096] See also Figures 14 to 21 The limiting space 2332 has a channel portion 2333 communicating with the outside, and the second end of the connecting member 232 can enter and exit the limiting space 2332 through the channel portion 2333. The connecting member 232 can be removed from the channel portion 2333, so that a greater distance between the first clamping arm 221 and the second clamping arm 222 can be achieved.

[0097] The displacement of the second end of the connector 232 in the limiting space 2332 is 0-100 mm. The size of the channel portion 2333 is set according to the outer dimensions of the connector 232, and can be 80%-500% of the outer diameter of the second end of the connector 232.

[0098] See also Fig.14 and Fig.15 The limiting member 233 includes two limiting parts 2334 arranged opposite to each other, and limiting grooves 2331 are arranged on the opposite surfaces of the two limiting parts 2334. The two limiting grooves 2331 surround a limiting space 2332, and a channel part 2333 is formed between the two limiting parts 2334.

[0099] See also Fig.16 and Fig.17The limiting member 233 includes a limiting portion 2334 and a limiting column 2335. A limiting groove 2331 is provided on a side of the limiting portion 2334 away from the first clamping arm 221. The limiting column 2335 is provided on one side of the limiting groove 2331 to enclose a limiting space 2332 with the limiting groove 2331. A channel portion 2333 is formed between the limiting portion 2334 and the limiting column 2335. The limiting column 2335 can be a screw, and the limiting space 2332 is enclosed by the head of the screw and the limiting portion 2334, so as to facilitate installation and disassembly.

[0100] See also Fig.18 and Fig.19 The limiting member 233 includes two limiting portions 2334 arranged opposite to each other, the two limiting portions 2334 enclose a limiting space 2332, and a channel portion 2333 is formed between the two limiting portions 2334. At least one of the two limiting portions 2334 is detachably connected to the second clamping arm 222 for easy assembly. In this embodiment, the limiting portion 2334 away from the first clamping arm 221 is detachably connected to the second clamping arm 222 by screws for easy assembly and disassembly.

[0101] The limiting member 233 and the second clamping arm 222 can be integrally formed or detachably connected. The two limiting portions 2334 can be provided separately or integrally formed.

[0102] See also Fig. 20 and Fig.21 The limiting member 233 includes two limiting portions 2334 arranged opposite to each other, and the two limiting portions 2334 are integrally formed. In a direction parallel to the second axis, the width of the limiting member 233 is not less than the width of the second clamping arm 222, so that the connecting member 232 and the limiting member 233 have a larger contact area when they are clamped.

[0103] See also Figure 22 to Figure 25 The second end of the connecting member 232 is located in the limiting space 2332 and cannot be removed from the limiting space 2332. The limiting member 233 and the second clamping arm 222 are detachably connected to facilitate the installation of the connecting member 232.

[0104] See also Fig. 22 and Fig.23 The stopper 233 is detachably connected to the second clamping arm 222 by screws. In a direction parallel to the second axis, the stopper 233 has a certain thickness so that the connecting member 232 and the stopper 233 have a larger contact area when they are clamped.

[0105] See also Fig.24 and Fig.25 The limiting member 233 is a limiting plate, and the limiting space 2332 is formed by bending the limiting plate. The limiting member 233 and the second clamping arm 222 are detachably connected by screws, which is convenient for assembly and replacement.

[0106] Fig.26 and Fig. 27 The third embodiment of the present application is shown, wherein a guide assembly 250 is provided between the first clamping arm 221 and the second clamping arm 222. When the first clamping arm 221 and the second clamping arm 222 move away from or approach each other, they are guided by the guide assembly 250 to improve movement stability.

[0107] The guide assembly 250 includes a guide column 251 and a guide groove, one of which is provided on the first clamping arm 221, and the other is provided on the second clamping arm 222. When the first clamping arm 221 and the second clamping arm 222 move away from or approach each other, the guide column 251 slides along the guide groove to improve the movement stability.

[0108] In this embodiment, the guide post 251 is disposed on the first clamping arm 221 , and the guide groove is disposed on the second clamping arm 222 .

[0109] Figure 28 to Figure 31 The fourth embodiment of the present application is shown, the operating member 231 rotates around the second axis O2 to switch between the first position and the second position, and the connecting rod 240 extends along the first straight line A1, and the first straight line A1 is perpendicular to the second axis O2 and is not in the same plane. In other words, the second axis O2 is located in a plane perpendicular to the first straight line A1. Therefore, the locking assembly 230 can be set on the top or side of the clamping assembly 220. Fig.29 As shown, the locking assembly 230 has a central axis O4, and the central axis O4 extends along the middle position of the locking assembly 230 in a direction perpendicular to the second axis O2. The central axis O4 is offset relative to the first straight line A1. In the drawings, A1 represents the first straight line, O2 represents the second axis, and O4 represents the central axis. In this embodiment, the auxiliary handle 200 can adopt the structure of any of the above embodiments.

[0110] The above shows and describes the basic principles, main features and advantages of the present application. Those skilled in the art should understand that the above embodiments do not limit the present application in any form, and any technical solution obtained by equivalent replacement or equivalent transformation falls within the protection scope of the present application.

Claims

1. A power tool combination, comprising a power tool and an auxiliary handle; The electric tool comprises: The housing comprises a first shell body which is substantially tubular and a first gripping portion for gripping, wherein the first gripping portion is formed on or connected to the first shell body; Characterized in that the auxiliary handle comprises: A second grip portion; A clamping assembly connected to the second gripping portion; the clamping assembly comprises a first clamping arm and a second clamping arm arranged opposite to each other to clamp the first housing; a locking assembly, comprising a locking state for limiting the relative movement of the clamping assembly and the first housing, and a releasing state for moving the first clamping arm and the second clamping arm away from each other to allow the relative movement of the clamping assembly and the first housing; The locking assembly includes an operating member, and when the position state of the operating member changes, the locking state and the releasing state of the locking assembly are switched; when the locking assembly is switched to the releasing state, the operating member applies a driving force to at least one of the first clamping arm and the second clamping arm to move the first clamping arm and the second clamping arm away from each other.

2. The electric tool assembly according to claim 1, characterized in that: At least one of the first clamping arm and the second clamping arm is connected to the operating member.

3. The electric tool assembly according to claim 1, characterized in that: The locking assembly further includes a connecting member, which connects the first clamping arm and the second clamping arm and is driven by the operating member.

4. The electric tool assembly according to claim 3, characterized in that: The operating member includes a first position corresponding to the locked state and a second position corresponding to the released state, and the operating member rotates around a second axis to switch between the first position and the second position, and the second axis intersects with an extension direction of the second gripping portion.

5. The electric tool assembly according to claim 4, characterized in that: The connecting member is rotatably connected to the operating member. The connecting member can rotate around a third axis relative to the operating member. The third axis is eccentrically arranged with respect to the second axis.

6. The electric tool assembly according to claim 4, characterized in that: The first shell is configured with a longitudinal axis, and the locking assembly is located above the longitudinal axis.

7. The electric tool assembly according to claim 4, characterized in that: The first end of the connecting member is connected to the first clamping arm, and the second clamping arm is provided with a limiting member. When the operating member is in the first position, the limiting member limits the second end of the connecting member.

8. The electric tool assembly according to claim 1, characterized in that: When the position state of the operating member changes, the operating member drives at least one of the first clamping arm and the second clamping arm to slide along the extending direction of the second gripping portion.

9. The electric tool assembly according to claim 1, characterized in that: When the position state of the operating member changes, the position state of the second gripping portion relative to the housing does not change.

10. The electric tool assembly according to claim 1, characterized in that: When the position state of the operating member changes, the relative position of the operating member with respect to the second grip portion changes.

11. An auxiliary handle adapted to be connected to a substantially tubular first housing of a power tool; characterized in that: The auxiliary handle comprises: A second grip portion; A clamping assembly connected to the second gripping portion; the clamping assembly comprises a first clamping arm and a second clamping arm arranged opposite to each other to clamp the first housing; a locking assembly, comprising a locking state for limiting the relative movement of the clamping assembly and the first housing, and a releasing state for moving the first clamping arm and the second clamping arm away from each other to allow the relative movement of the clamping assembly and the first housing; The locking assembly includes an operating member, and when the position state of the operating member changes, the locking state and the releasing state of the locking assembly are switched; when the locking assembly is switched to the releasing state, the operating member applies a driving force to at least one of the first clamping arm and the second clamping arm to move the first clamping arm and the second clamping arm away from each other.

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