WO2021169346A1

WO2021169346A1 - Adapter of electric tool and electric tool system

Info

Publication number: WO2021169346A1
Application number: PCT/CN2020/124020
Authority: WO
Inventors: 毋宏兵; 孙开军; 闵军辉; 徐刚; 刘其正
Original assignee: 苏州宝时得电动工具有限公司
Priority date: 2019-05-10
Filing date: 2020-10-27
Publication date: 2021-09-02
Also published as: CN112003511A; CN112003513A; CN211959097U; CN112003512A; CN212726899U; CN112003509A; CN112003510B; CN112003510A; WO2021147425A1

Abstract

An adapter (100) of an electric tool and an electric tool system, relating to the field of electric tools. The adapter (100) of an electric tool comprises: a housing (1) having a first opening (11); a control module (2) used for controlling working parameters of a brushless motor of an electric tool (200); a first plug-in structure (3) provided in the housing (1) at the position corresponding to the first opening (11) and used for plug-in with the electric tool (200), the first plug-in structure (3) being electrically connected to the control module (2); and a shielding mechanism switching between a shielding state and an open state. When the adapter (100) is plugged into the electric tool (200), the shielding mechanism is in the open state, and the first opening (11) is open. When the adapter (100) is disconnected from the electric tool (200), the shielding mechanism is in the shielding state, and the first opening (11) is shielded. The shielding mechanism comprises a shielding member (4) and a reset member (5). The adapter (100) further comprises a switch unit (6) and an input wire (7). The adapter (100) can prevent dust, impurities and the like from entering a connecting socket, thereby effectively improving the safety factor.

Description

Power tool adapter and power tool system

This application claims the priority of the Chinese patent application whose application date is February 28, 2020 and the application number is 202010129055.8, the entire content of which is incorporated into this application by reference.

Technical field

The invention relates to the field of electric tools, in particular to an adapter and an electric tool system of an electric tool.

Background technique

In daily life, the power tool system has an adapter. In order to facilitate the detachable separation between the adapter and the power tool, the adapter is often designed as an independent device in the prior art. When the power tool needs to be used or charged, etc. At this time, only need to install the adapter to the electric tool, and at this time, the respective plug-in structures of the two are connected to each other, so as to achieve the purpose of electrical connection.

However, when the adapter is not installed on the power tool, the plug-in structure on the adapter is at least partially exposed. Therefore, it is easy for dust or foreign objects to enter the plug-in structure, which may cause the electrode sheet and other components in the plug-in structure. Short-circuit, easy aging, and electric shock caused by direct exposure. Therefore, such an adapter cannot meet the requirements of consumers for safe use and long life.

Summary of the invention

In order to overcome the above-mentioned shortcomings of the prior art, the technical problem to be solved by the embodiments of the present invention is to provide a power tool adapter and power tool system, which can prevent dust and sundries from entering the connection socket, thereby effectively improving the safety factor.

The specific technical solution of the embodiment of the present invention is:

(Same as claims)

The technical solution of the present invention has the following significant beneficial effects:

The adapter of the power tool in the present application has a shielding mechanism. When the adapter of the power tool is not installed on the power tool, the shielding mechanism of the adapter of the power tool is in a shielding state. In this way, the shielding mechanism shields the first opening to avoid The first plug-in structure corresponding to the position of the first opening is in an exposed state. When the adapter of the power tool is installed on the power tool, the shielding mechanism of the adapter of the power tool is in an open state, and the shielding mechanism leaves the first opening to make it open, so that the second plug-in structure on the power tool is connected to the power tool through the first opening. The first plug-in structure of the adapter of the electric tool is connected. Through the above method, when the adapter of the electric tool is not installed on the electric tool, the blocking mechanism can effectively block the first opening, so as to prevent dust and sundries from entering the first plug-in structure through the first opening, thereby effectively improving Safety factor.

With reference to the following description and drawings, specific embodiments of the present invention are disclosed in detail, indicating the ways in which the principles of the present invention can be adopted. It should be understood that the scope of the embodiments of the present invention is not limited thereby. Within the spirit and scope of the terms of the appended claims, the embodiments of the present invention include many changes, modifications and equivalents. Features described and/or shown for one embodiment can be used in one or more other embodiments in the same or similar manner, combined with features in other embodiments, or substituted for features in other embodiments .

Description of the drawings

The drawings described herein are for explanatory purposes only, and are not intended to limit the scope of the present disclosure in any way. In addition, the shape and proportional size of each component in the figure are only illustrative, which are used to help the understanding of the present invention, and do not specifically limit the shape and proportional size of each component of the present invention. Under the teaching of the present invention, those skilled in the art can choose various possible shapes and proportional sizes according to specific conditions to implement the present invention.

Figure 1 is a cross-sectional structural view of an adapter of an electric tool in a first state in an embodiment of the present invention;

2 is a cross-sectional structure diagram of the adapter of the electric tool in the second state of the embodiment of the present invention;

Figure 3 is a top view of the adapter of the electric tool in the embodiment of the present invention;

4 is a schematic diagram of the adapter of the electric tool after separation from the electric tool in the embodiment of the present invention;

Fig. 5 is a schematic diagram of the main body of the electrical appliance pressing down the shielding mechanism in the adaptor of the electric tool in the embodiment of the present invention.

Reference signs of the above drawings:

1. Housing; 11, first opening; 12, slide rail; 121, first end; 122, second end; 13, second opening; 2. control module; 3. first plug-in structure; 4. shield 41. Trigger part; 42, shield part; 43. Press part; 5. Reset part; 6. Switch unit; 7. Input wire; 8. First engaging mechanism; 81. 82, elastic member; 9, second plug-in structure; 10, sliding groove; 101, third end; 102, fourth end; 14, second engagement mechanism; 100, power tool adapter; 200, electric tool.

Detailed ways

The details of the present invention can be understood more clearly in combination with the drawings and the description of the specific embodiments of the present invention. However, the specific embodiments of the present invention described herein are only used to explain the purpose of the present invention, and cannot be construed as limiting the present invention in any way. Under the teaching of the present invention, the skilled person can conceive any possible modifications based on the present invention, and these should be regarded as belonging to the scope of the present invention. It should be noted that when an element is referred to as being "disposed on" another element, it can be directly on the other element or a central element may also exist. When an element is considered to be "connected" to another element, it can be directly connected to the other element or an intermediate element may be present at the same time. The terms "installation", "connection" and "connection" should be understood in a broad sense. For example, it can be a mechanical connection or an electrical connection, or it can be a connection between two components, which can be directly connected or indirectly connected through an intermediary. For those of ordinary skill in the art, the specific meanings of the above-mentioned terms can be understood according to specific circumstances. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only, and do not mean the only implementation.

Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field of this application. The terminology used in the specification of the application herein is only for the purpose of describing specific embodiments, and is not intended to limit the application. As used herein, the term "and/or" includes any and all combinations of one or more of the related listed items.

In order to prevent dust and sundries from entering the connection socket, thereby effectively improving the safety factor, an adapter for an electric tool and an electric tool system are proposed in this application. Fig. 2 is a cross-sectional structure diagram of the adapter of the electric tool in the embodiment of the present invention in the second state. As shown in Figs. 1 and 2, the adapter 100 of the electric tool may include: a housing 1. The housing 1 has a first opening 11; a control module 2, the control module 2 is used to control the working parameters of a brushless motor in an electric tool; a first plug-in structure 3, which is arranged in the housing The position corresponding to the first opening 11 in 1 is used for plugging with an electric tool, and the first plug-in structure 3 can be electrically connected with the control module 2; the shielding mechanism can be in a shielded state and an open state When the adapter 100 is plugged into the electric tool 200, the shielding mechanism is in an open state, opening the first opening 11; when the adapter 100 is disconnected from the electric tool 200, the shielding mechanism is in In the blocking state, the first opening 11 is blocked.

The power tool system proposed in the present application may include a power tool 200 and an adapter 100 of the power tool. The power tool 200 has a second plug-in structure 9 that matches the first plug-in structure 3; When the adapter 100 of the tool is installed on the electric tool 200, the first plug-in structure 3 and the second plug-in structure 9 are opposite to each other, and the shielding mechanism is in an open state.

The adapter 100 of the power tool in the present application has a shielding mechanism. When the adapter 100 of the power tool is not mounted on the power tool 200, the shielding mechanism of the adapter 100 of the power tool is in a shielding state. In this way, the shielding mechanism opens the first opening 11 The shielding is performed to prevent the first plug-in structure 3 corresponding to the position of the first opening 11 from being exposed. When the adapter 100 of the electric tool is installed on the electric tool 200, the shielding mechanism of the adapter 100 of the electric tool is in an open state, and the shielding mechanism leaves the first opening 11 to make it open, so that the second plug-in structure on the electric tool 200 9 is connected to the first plug-in structure 3 of the adapter 100 of the electric tool through the first opening 11. Through the above method, when the adapter 100 of the electric tool is not installed on the electric tool 200, the shielding mechanism can effectively shield the first opening 11, thereby preventing dust and sundries from entering the first plug-in structure 3 through the first opening 11 , Which effectively improves the safety factor.

In order to better understand the power tool adapter and power tool system in this application, it will be explained and described below. As shown in FIG. 1 and FIG. 2, the adapter 100 of the electric tool has a housing 1, and the housing 1 can be formed by combining or splicing multiple parts, which is not limited here. The housing 1 may have a first opening 11, and the first opening 11 may have any shape, which is not limited here, and it needs to ensure that the second plug-in structure 9 of the electric tool 200 can at least partially extend in.

As shown in Figures 1 and 2, the housing 1 is provided with a first plug-in structure 3, the first plug-in structure 3 is fixed in the housing 1, and the first plug-in structure 3 is at the same position as the first opening 11. correspond. In other words, the first plug-in structure 3 faces the first opening 11. Therefore, the second plug-in structure 9 of the electric tool 200 can extend from the first opening 11 to the inside of the housing 1 so as to be connected to the first plug-in structure 3 inside the housing 1. The housing 1 also has a control module 2 inside. The control module 2 is used to control the working parameters of the brushless motor in the electric tool 200, such as voltage conversion, DC/AC conversion, current magnitude conversion, and so on. The control module 2 can be electrically connected to the first plug-in structure 3, so as to be electrically connected to the brushless motor in the electric tool 200 through the first plug-in structure 3 and the second plug-in structure 9.

The shielding mechanism in the adapter 100 of the electric tool may include a shielding member 4 and a resetting member 5. The shielding member 4 is in driving connection with the resetting member 5. The restoring member 5 may be a component with elasticity or restoring ability, such as a spring. The resetting member 5 enables the shielding mechanism to have an open state and a shielding state. In the blocking state, as shown in FIG. 1, the blocking member 4 blocks the first opening 11 under the action of the resetting member 5. In the open state, as shown in FIG. 2, the resetting member 5 is contracted, and the shielding member 4 is away from the first opening 11 to make the first opening 11 open.

In a feasible implementation, as shown in FIGS. 1 and 2, the housing 1 has a second opening 13, and the second opening 13 is located at the first opening 11 of the housing 1. The shield 4 can pass through the second opening 13 and slide in the second opening 13. For example, in FIGS. 1 and 2, the shield 4 can slide in the up and down direction. One end of the resetting member 5 abuts the shielding member 4 so that the shielding member 4 has a tendency to move toward the first opening 11. The other end of the resetting member 5 can be fixed in position relative to the housing 1, and it can be directly against the housing 1 or indirectly against the housing 1 through other structures or fixed on the housing 1 or indirectly fixed on the housing 1 through other structures. Etc. With the above structure, in the blocking state, the blocking member 4 slides out from the second opening 13 under the elastic force of the resetting member 5 to block the first opening 11. When the shielding member 4 is pressed downward, the shielding member 4 compresses the resetting member 5, the resetting member 5 contracts, and the shielding member 4 slowly slides into the housing 1 from the second opening 13. The adapter 100 of the electric tool is transformed from the shielded state to the open state. In the open state, the shield 4 has been at least partially slid into the housing 1 from the second opening 13 so as to be away from the first opening 11, so that the first The opening 11 is open.

3 is a top view of the adapter of the electric tool in the embodiment of the present invention, FIG. 4 is a schematic diagram of the adapter of the electric tool in the embodiment of the present invention separated from the electric tool, and FIG. 5 is the adapter of the electric tool in the embodiment of the present invention. As shown in Figs. 3 to 5, the housing 1 of the adapter 100 of the electric tool may have a sliding rail 12 on the shielding mechanism after being pressed down. The electric tool 200 may include: a sliding groove 10 that matches with the sliding rail 12. The sliding groove 10 can be inserted into the sliding rail 12, so that sliding can occur between the sliding rail 12 and the sliding groove 10, and finally the adapter 100 of the electric tool is installed on the electric tool 200. When the sliding rail 12 and the sliding groove 10 are assembled, the electric tool 200 slides into the housing 1 against the shielding member 4 and compresses the resetting member 5 so that the shielding mechanism is in an open state, and the second plug-in structure 9 passes through the first The opening 11 is inserted into the first plug-in structure 3. For example, in this embodiment, the cross section of the slide rail 12 may be substantially T-shaped, and the notch portion of the slide groove 10 corresponds to the slide rail 12 so that the slide groove 10 can be clamped into the slide rail 12.

As shown in FIGS. 4 to 5, in the insertion direction, the first opening 11 is located at the front of the sliding rail 12, and the shielding mechanism is located at the front of the first opening 11. The first opening 11 may be located at the end of the slide rail 12. The second plug-in structure 9 of the electric tool 200 is located at the end of the second sliding portion 10, and the end corresponds to the end of the first opening 11. When the sliding groove 10 of the power tool 200 slides to the bottom along the slide rail 12 of the power tool adapter 100, the power tool 200 and the power tool adapter 100 are completely installed together. At this time, the second plug structure of the power tool 200 9 extends into the first opening 11, and then faces the first plug-in structure 3 of the adapter 100 of the electric tool.

Specifically, the sliding rail 12 has a first end 121 and a second end 122, the front of the sliding rail 12 is a second end 122, and the second sliding portion 10 has a third end 101 and a fourth end 102. When the sliding rail 12 When assembled with the sliding groove 10, the third end 101 of the sliding groove 10 slides from the second end 122 of the sliding rail 12 to the first end 121 of the sliding rail 12; the first opening 11 is located at the second end 122 of the sliding rail 12; The shield 4 is located at the second end 122 of the sliding rail 12; the second plug-in structure 9 is located at the fourth end 102 of the sliding groove 10. The shield 4 is provided with a trigger portion 41. When the adapter 100 of the electric tool is inserted into the electric tool 200, the electric tool 200 abuts the hair portion 41, so that the shield 4 faces the inside of the housing 1. slide. The trigger portion 41 has an inclined surface, and the inclined surface faces the direction in which the electric tool 200 is inserted into the adapter 100 of the electric tool. When the triggering portion 41 is pressed, the shield 4 will slide into the housing 1. When the sliding groove 10 has just been inserted into the sliding rail 12, the third end 101 of the sliding groove 10 will press the trigger portion 41 of the shield 4, and under the action of the trigger portion 41, the shield 4 will slide toward the inside of the housing 1. In this way, the first opening 11 is open. In the above process, when the user installs the adapter 100 of the power tool and the power tool 200 together, the user will naturally switch the shielding mechanism from the shielding state to the open state, and no additional operations are required to facilitate the second operation of the power tool 200 later. The plug-in structure 9 extends into the first opening 11 to be opposite to the first plug-in structure 3 of the power adapter 100 of the electric tool.

In a feasible embodiment, as shown in FIGS. 1 to 3, the shielding member 4 has a shielding portion 42 for shielding the first opening 11 and a trigger portion 41. As shown in FIG. 3, there may be two trigger parts 41, which are respectively located at the upper and lower ends of the shielding part 42. The trigger portion 41 and the shielding portion 42 are arranged perpendicularly, and the cross section of the second opening 13 matches the cross section of the shield 4. Due to the vertical structure of the triggering portion 41 and the shielding portion 42, the entire shielding member 4 has good stability when sliding in the second opening 13, and the shielding member 4 will not shake or become unstable in the second opening 13 Case.

In a feasible implementation, as shown in FIGS. 1 and 2, the adapter 100 of the electric tool may include: a switch unit 6 and an input wire 7, and the switch unit 6 is electrically connected to the input wire 7 and the control module 2 respectively. . In the open state, the switch unit 6 enables the input wire 7, the control module 2, and the first plug-in structure 3 to communicate. That is to say, when the adapter 100 of the electric tool is installed on the electric tool 200, after the first plug-in structure 3 of the adapter 100 of the electric tool and the second plug-in structure 9 of the electric tool 200 are connected, the input wire 7 and When the power is turned on, the first plug-in structure 3 will be charged. In the shielded state, the switch unit 6 disconnects the input wire 7 from the control module 2 and the first plug-in structure 3. In other words, when the power tool adapter 100 is not installed on the power tool 200, even if the input wire 7 is connected to the power source, the first connection socket 3 and the control module 2 will not be energized. An electric shock will not occur in a plug-in structure 3, which effectively improves the safety of the adapter 100 of the electric tool. In this embodiment, the switch unit 6 may be a normally closed switch. The covering member 4 may have a pressing portion 43. In the open state, the pressing portion 43 presses the switch unit 6 so that the switch unit 6 is in a connected state; in the shielded state, the pressing portion 43 is separated from the switch unit 6, and the switch unit 6 is in a connected state. Disconnected state.

In a feasible embodiment, as shown in FIGS. 1, 2, 4, and 5, the adapter 100 of the electric tool may include: a first engagement mechanism 8; and the electric tool 200 may have a second engagement mechanism 14. When the sliding rail 12 and the sliding groove 10 are assembled, the first engaging mechanism 8 and the second engaging mechanism 14 can be engaged, and the adapter 100 of the electric tool and the electric tool 200 cannot slide. When the first engagement mechanism 8 and the second engagement mechanism 14 are not engaged, the adapter 100 of the electric tool and the electric tool 200 can slide to separate them. In this embodiment, the second engaging mechanism 14 is an engaging portion. The first engagement mechanism 8 includes: an engagement member 81 arranged at the slide rail 12; an elastic member 82 that abuts the engagement member 81. Under the action of the elastic member 82, the engagement member 81 can extend out of the housing 1 or Retracted into the housing 1. When the sliding rail 12 and the sliding groove 10 are assembled and approached in place, the engaging part on the electric tool 200 presses the engaging member 81 into the housing 1. Then, the slide rail 12 and the slide groove 10 continue to slide until they are fully in place. At this time, the engaging member 81 extends out of the housing 1 again under the action of the elastic member 82 and engages with the engaging portion. At this time, the slide rail 12 It cannot slide with the chute 10, and the adapter 100 of the electric tool and the electric tool 200 are firmly installed to avoid detachment during subsequent use.

The engaging member 81 may have an exposed pressing part 811 for the user to press. When the user needs to disassemble and separate the adapter 100 of the electric tool from the electric tool 200, the pressing part 811 is pressed, the elastic part 82 is compressed, and the engaging part 81 is retracted into the housing 1, the engaging member 81 is separated from the engaging part, and the slide rail 12 and the slide groove 10 can slide. At this time, the user then removes the slide rail 12 of the power tool adapter 100 from the power tool 200 The chute 10 slides out to complete the separation of the power tool adapter 100 and the power tool 200.

All articles and references disclosed, including patent applications and publications, are incorporated herein by reference for various purposes. The term "consisting essentially of" describing a combination shall include the determined element, component, component or step and other elements, components, components or steps that do not substantially affect the basic novel characteristics of the combination. The use of the term "comprising" or "including" to describe a combination of elements, components, components or steps herein also contemplates an embodiment basically consisting of these elements, components, components or steps. The term "may" is used here to illustrate that any of the described attributes included in "may" are optional. Multiple elements, components, components or steps can be provided by a single integrated element, component, component or step. Alternatively, a single integrated element, ingredient, component or step may be divided into separate multiple elements, ingredients, components or steps. The disclosure of "a" or "an" used to describe an element, ingredient, component or step does not mean to exclude other elements, ingredients, components or steps.

The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments, and the same or similar parts between the various embodiments can be referred to each other. The above-mentioned embodiments are only to illustrate the technical concept and characteristics of the present invention, and their purpose is to enable those familiar with the technology to understand the content of the present invention and implement them accordingly, and cannot limit the protection scope of the present invention. All equivalent changes or modifications made according to the spirit of the present invention should be covered by the protection scope of the present invention.

Claims

An adapter for an electric tool, characterized in that the adapter for an electric tool includes:

A housing, the housing having a first opening;

A control module, which is used to control the working parameters of the brushless motor in the electric tool;

A first plug-in structure, arranged at a position corresponding to the first opening in the housing, for plug-in connection with an electric tool, and the first plug-in structure can be electrically connected with the control module;

The shielding mechanism can be switched between the shielding state and the open state; when the adapter is plugged into the electric tool, the shielding mechanism is in the open state, opening the first opening; when the adapter is disconnected from the electric tool, The shielding mechanism is in a shielding state and shields the first opening;

The shielding mechanism includes a shielding member and a resetting member. The housing has a second opening, and the shielding member can slide in the second opening. In the shielding state, the resetting member drives the shielding member to slide out of the housing. The second opening; in the open state, the adapter is plugged into the electric tool, and the electric tool slides into the housing against the shielding member and compresses the resetting member;

The shield has a trigger part, and when the adapter of the electric tool is plugged into the electric tool, the electric tool abuts against the hair part, so that the shield slides into the housing;

The adapter also includes a switch unit and an input wire, the switch unit is electrically connected to the input wire and the control module, respectively; in the open state, the switch unit is turned on, so that the input wire and the control module are turned on In the shielded state, the switch unit is disconnected, so that the input wire and the control module are disconnected.
The adapter for an electric tool according to claim 1, wherein the trigger portion has an inclined surface, and the inclined surface faces a direction from which the electric tool is inserted into the adapter of the electric tool.
The adapter for an electric tool according to claim 1, wherein the adapter is slidably inserted into the electric tool, the housing is provided with a sliding rail, and in the insertion direction, the first opening is located at In the front part of the sliding rail, the shielding mechanism is located in the front part of the first opening.
The adapter for an electric tool according to claim 1, wherein the shielding mechanism includes a pressing portion connected with the shielding member, and in an open state, the pressing portion presses the switch unit to make the The switch unit is turned on; in the blocking state, the pressing portion is separated from the switch unit, and the switch unit is turned off.
An electric tool system, characterized in that it comprises an electric tool and an adapter for the electric tool according to any one of claims 1 to 4, and the electric tool has a second plug structure that matches the first plug structure. Plug-in structure; when the adapter of the electric tool is installed on the electric tool, the first plug-in structure is opposite to the second plug-in structure, and the shielding mechanism is in an open state.
The power tool system according to claim 5, wherein the housing has a sliding rail, and the electric tool has a sliding groove that matches the sliding rail. When the sliding rail and the sliding rail are When the slot assembly is completed, the electric tool abuts the shielding mechanism to make it in an open state, and the second plug-in structure is inserted into the first plug-in structure through the first opening.
The power tool system according to claim 6, wherein the adapter of the power tool further comprises: a first engagement mechanism; the power tool has a second engagement mechanism; when the slide rail is connected to the When the chute is assembled, the first engaging mechanism and the second engaging mechanism can be engaged with each other, and the adapter of the electric tool cannot slide with the electric tool; when the first engaging mechanism is engaged When the mechanism is not engaged with the second engaging mechanism, the adapter of the electric tool and the electric tool can slide to separate them.