Key structure, battery pack and electric tool

Abstract

The utility model relates to the technical field of tools, and discloses a key structure, a battery pack and an electric tool. The key structure comprises a key body. The key body comprises a pressing part and a triggering part which are arranged at an interval, and a middle part for connecting the pressing part and the triggering part; a receding area is formed on the side, close to the trigger part, of the pressing part, and the middle part extends from the surface of the pressing part in the direction surrounding the receding area to be bent. The triggering part comprises a first part and a second part which are connected, and the first part is connected with the middle part. When the first part triggers the switch in the pressing direction, the second part abuts against the circuit board in the direction perpendicular to the pressing direction. According to the key structure, the battery pack and the electric tool provided by the invention, the key structure can be ensured to smoothly realize the corresponding operation function.

Description

Technical Field

[0001] The embodiments of the present application relate to the field of tool technology, and in particular to a button structure, a battery pack and an electric tool. Background Art

[0002] With the continuous development of tools, various types of power tools have begun to appear and are widely used in different work scenarios. The use of power tools can improve the work efficiency of workers and facilitate the operation of operators. Power tools are usually equipped with various key structures to facilitate the control of operators. By operating these keys, operators can control the operation of power tools or obtain relevant status information of power tools.

[0003] Different key structures correspond to different operating requirements, and the setting of these key structures is related to the normal use of the power tool. Therefore, how to ensure that the key structure can smoothly realize the corresponding operating function is an important issue. Utility Model Content

[0004] The purpose of the embodiments of the present application is to provide a button structure, a battery pack and an electric tool, which can help ensure that the button structure can smoothly realize the corresponding operating function.

[0005] In order to solve the above technical problems, the embodiments of the present application provide a key structure. The key structure includes a key body. The key body includes a pressing portion and a triggering portion that are spaced apart, and a middle portion connecting the pressing portion and the triggering portion. A clearance area is formed on one side of the pressing portion close to the triggering portion, and the middle portion extends from the surface of the pressing portion in a direction surrounding the clearance area into a curved shape. The triggering portion includes a first part and a second part that are connected, and the first part is connected to the middle portion. When the first part triggers the switch along the pressing direction, the second part abuts against the circuit board along a direction perpendicular to the pressing direction.

[0006] The embodiment of the present application also provides a battery pack, which includes a shell, a circuit board and the above-mentioned button structure. The shell is provided with an inner cavity and a mounting hole connected to the inner cavity, and the inner cavity accommodates a battery cell. The circuit board is connected to the shell, and the circuit board is provided with a switch. The pressing portion of the button structure is engaged with the mounting hole and can move under the action of pressing. The yield area of the pressing portion close to the trigger portion corresponds to the position of the battery cell. The first part of the trigger portion triggers the switch when moving, and the second part of the trigger portion abuts against the circuit board.

[0007] The embodiment of the present application also provides an electric tool, the electric tool comprising the above-mentioned battery pack

[0008] The key structure, battery pack and electric tool provided in the embodiments of the present application have a reserve area on the side of the pressing portion of the key body close to the trigger portion. The reserve area can reasonably utilize the space at the key installation position to reduce the space occupied. At the same time, the middle part connecting the trigger portion and the pressing portion extends in a direction surrounding the reserve area, which provides convenience for supporting the trigger portion to reach the switch position. In the process of triggering the switch, the trigger portion can push the moving contact of the switch through the first part, and abut on the circuit board through the second part to limit the position, thereby avoiding unexpected movement during the triggering process, thereby ensuring that the key structure smoothly realizes the corresponding operation function.

[0009] In some embodiments, the trigger portion is staggered with the pressing portion in the pressing direction. In this way, the trigger portion and the pressing portion can be staggered to adapt to switch control when the pressing point and the trigger point are not in a straight line.

[0010] In some embodiments, the first portion extends from the extended end of the middle portion in a direction perpendicular to the pressing direction, and the second portion extends from the extended end of the first portion in the pressing direction. In this way, a larger triggering area can be formed in the triggering portion by extending different portions of the triggering portion in different directions.

[0011] In some embodiments, the extension length of the first portion is greater than the extension length of the second portion. In this way, the second portion can be arranged on a side of the circuit board away from the switch by making the extension length of the first portion of the trigger portion greater than the extension length of the second portion.

[0012] In some embodiments, the pressing portion includes a main body and a limiting portion connected to each other, and the limiting portion is arranged on the main body around the pressing direction. In this way, the pressing function can be achieved by the main body, and the limiting function can be achieved by the limiting portion.

[0013] In some embodiments, the pressing portion has a pressing surface and a limiting surface arranged opposite to each other along the pressing direction, the pressing surface is provided with a key mark, and the middle portion is connected to the limiting surface. In this way, the control purpose of the key structure can be easily identified through the key mark provided on the pressing surface.

[0014] In some embodiments, the pressing portion, the middle portion and the trigger portion are an integrated structure, so that the overall strength of the key structure can be ensured through the integrated structure.

[0015] In some embodiments, the housing is provided with a protrusion extending from the hole wall of the mounting hole, and the protrusion is provided with a groove for the middle part to pass through. In this way, the moving range of the pressing part can be effectively limited by the protrusion. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] One or more embodiments are exemplarily illustrated by the pictures in the corresponding drawings. These exemplary illustrations do not constitute a limitation on the embodiments. Elements with the same reference numerals in the drawings are represented as similar elements, unless otherwise stated. The drawings in the figures do not constitute a scale limitation.

[0017] Figure 1 is a schematic perspective view of a key structure provided by some embodiments of the present application;

[0018] Figure 2 is a schematic perspective view of a battery pack provided by some embodiments of the present application;

[0019] Figure 3 is an exploded schematic view of a battery pack provided by some embodiments of the present application;

[0020] Figure 4 is a schematic side view of a battery pack provided by some embodiments of the present application;

[0021] Figure 5 is a schematic top view of a battery pack provided by some embodiments of the present application;

[0022] Figure 6 is along Figure 5 a cross-sectional schematic view taken along the A-A direction in

[0023] Figure 7 is Figure 6 an enlarged schematic view of part B in Detailed Embodiments

[0024] To make the objectives, technical solutions, and advantages of the embodiments of the present application clearer, the following will elaborate on each embodiment of the present application in conjunction with the drawings. However, those of ordinary skill in the art can understand that in each embodiment of the present application, many technical details are provided to help readers better understand the present application. However, even without these technical details and various changes and modifications based on the following embodiments, the technical solutions claimed in the present application can still be implemented. The division of the following embodiments is for convenience of description and should not constitute any limitation on the specific implementation of the present application. The various embodiments can be combined and cross-referenced with each other on the premise of no contradiction.

[0025] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the specification and claims of this application and the above drawings are intended to cover non-exclusive inclusion.

[0026] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, technical terms such as "installed", "connected", "connected" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0027] Electric tools are usually equipped with two or more button structures, which can facilitate operators to operate the electric tools to complete construction work. For example, the power-on button equipped with the electric tool can complete the control of the power-on operation under the operation of the operator; the gear button equipped with the electric tool can complete the control of the operating gear under the operation of the operator.

[0028] The key structures equipped on the power tools are different, usually corresponding to different functions. In the power tools, the key structures that realize different operation functions are integrated together. These key structures are set at the appropriate position of the housing of the power tool so that the operator can press them selectively. The commonly used key structures are set at the position that is easy for the operator to reach when holding the power tool, and some uncommon key structures are set at other positions of the housing. Because some key structures are affected by the layout space when they are set, the corresponding control results cannot be correctly obtained after pressing. For example, in the power tool industry, the indicator light button is often set at the front position of the battery pack. The switch on the circuit board is triggered by the connecting rod part of the button. However, since the battery pack buckle position is also at the front of the battery pack, the indicator light button position is often located at the lower part of the battery pack buckle, resulting in the indicator light button position being lower than the circuit board. In the process of the operator pressing the indicator light button from front to back, the indicator light button often has a seesaw effect and tilts upward, making it difficult to trigger the switch on the circuit board.

[0029] To this end, some embodiments of the present application provide a key structure with a raised portion, which can effectively solve the problem of warping caused by the pressing point and the triggering point not being at the same horizontal position. The key structure is provided with a protrusion at the contact portion between the key body and the switch contact, and the protrusion is located on one side of the circuit board after the key body is installed. When the operator presses the key body from front to back, the protrusion can press against the circuit board, thereby effectively limiting the movement of one side of the circuit board of the triggering portion of the key body, avoiding the inability to trigger the switch due to the warping problem, thereby ensuring that the key structure smoothly realizes the corresponding operating function and improving the user experience.

[0030] Combine the following Figures 1 to 7This describes the key structure provided by some embodiments of the present application. The key structure is used to trigger a switch on a circuit board. Among them, Figures 2 to 7 The structure of a battery pack using this key structure is shown.

[0031] As Figures 1 to 7 shown, the key structure provided by some embodiments of the present application includes a key body 11. The key body 11 includes a pressing portion 111 and a triggering portion 112 that are spaced apart, and an intermediate portion 113 that connects the pressing portion 111 and the triggering portion 112. A relief area 101 is formed on the side of the pressing portion 111 close to the triggering portion 112, and the intermediate portion 113 extends in a curved shape from the surface of the pressing portion 111 along the direction surrounding the relief area 101. The triggering portion 112 includes a connected first portion 1121 and a second portion 1122, and the first portion 1121 is connected to the intermediate portion 113. When the first portion 1121 triggers the switch 14 in the pressing direction ( Figure 1 the direction indicated by the arrow X in the figure), the second portion 1122 abuts against the circuit board 13 in the direction perpendicular to the pressing direction.

[0032] The key body 11 is the main body structure of the key. Different structures are formed at different parts of the key body 11 to play their respective different roles. The pressing portion 111 is the part for the operator to press. The pressing portion 111 is connected to a part of the housing 12 where the key structure is installed and at least partially exposed outside, and can move relative to the housing 12 under the pressing action of the operator. The triggering portion 112 is the part for triggering the switch 14. The triggering portion 112 can push the moving contact of the switch 14 to act during the movement process, thereby changing the state of the switch 14. The intermediate portion 113 connects the pressing portion 111 and the triggering portion 112 together to form an integral structure.

[0033] At the same time, the existence of the intermediate portion 113 enables the triggering portion 112 to be close to the position where the switch 14 is located. The shape of the intermediate portion 113 is also set according to the respective positions of the pressing portion 111 and the triggering portion 112. When the pressing portion 111 and the triggering portion 112 are arranged in a non-linear direction, the intermediate portion 113 can be used for transitional connection. When there are components around the pressing portion 111 affecting the layout space, the intermediate portion 113 can be designed for avoidance. The relief area 101 formed on the side of the pressing portion 111 close to the triggering portion 112 can avoid other components near the circuit board 13, and the intermediate portion 113 is arranged along the direction surrounding the relief area 101. When installing the key structure on the housing 12, it will not affect other components or interfere with other components.

[0034] Supported by the middle part 113, the triggering part 112 can reach the position of the switch 14 unobstructed. The first part 1121 of the triggering part 112 can be used to trigger the movement of the moving contact of the switch 14, and the second part 1122 of the triggering part 112 can play a limiting role in the direction perpendicular to the pressing direction. Ensure that during the process of the triggering part 112 triggering the switch 14 to change its state, the situation of position deviation can be avoided, thereby avoiding the inability to correctly trigger the switch 14.

[0035] In the key structure provided by some embodiments of the present application, a relief area 101 is reserved on the side of the pressing part 111 of the key body 11 close to the triggering part 112. The relief area 101 can reasonably utilize the space at the key installation position and reduce the space occupation. At the same time, the middle part 113 connecting the triggering part 112 and the pressing part 111 extends along the direction surrounding the relief area 101, which facilitates supporting the triggering part 112 to reach the position of the switch 14. During the process of the triggering part 112 triggering the switch 14, the moving contact of the switch 14 can be pushed to move by the first part 1121, and the second part 1122 can be abutted against the circuit board 13 for limiting to avoid unexpected movement during the triggering process, so as to ensure that the key structure smoothly realizes the corresponding operation function.

[0036] In some embodiments, the triggering part 112 and the pressing part 111 can be staggeredly arranged in the pressing direction.

[0037] Under the connection action of the middle part 113, the triggering part 112 and the pressing part 111 can be staggered from each other in the pressing direction, so as to adapt to the control of the switch 14 where the pressing point and the triggering point are not in the same straight line direction. In actual situations, the middle part 113 can form a certain bending arc to effectively avoid other components arranged in the key pressing direction. At the same time, ensure that when the middle part 113 moves along the pressing direction with the pressing part 111, it will not interfere with other components. The bending arcs of each part of the middle part 113 can be kept consistent, or can be continuously changed, or can be discontinuously changed, as long as a relief area 101 with a suitable size is formed on the side of the pressing part 111 close to the triggering part 112.

[0038] As Figure 1 shown, the first part 1121 of the triggering part 112 can extend along the direction perpendicular to the pressing direction from the extending end of the middle part 113, and the second part 1122 extends along the pressing direction from the extending end of the first part 1121.

[0039] That is to say, the first part 1121 and the second part 1122 of the trigger part 112 can extend in different directions. The first part 1121 extends in a direction perpendicular to the pressing direction, and a relatively large triggering area can be formed. Within the range of this triggering area, the triggering control of the moving contact of the switch 14 can be achieved. The second part 1122 extends along the pressing direction to abut against one side of the circuit board 13, restricting the movement of the trigger part 112 in the thickness direction of the circuit board 13. Thereby ensuring that the surface of the first part 1121 can always face the position where the moving contact of the switch 14 is located, so as to complete the control of the state of the switch 14.

[0040] As Figure 1 shown, the second part 1122 is closer to the pressing part 111 than the first part 1121 in the direction perpendicular to the pressing direction, and can abut against the side of the circuit board 13 close to the pressing part 111. Through the pressing action of the second part 1122, the first part 1121 is prevented from moving towards the side of the circuit board 13 away from the pressing part 111.

[0041] In addition, the extension length of the first part 1121 can be made greater than the extension length of the second part 1122.

[0042] The extension length of the first part 1121 is greater than the extension length of the second part 1122, making the trigger part 112 as a whole present an L shape. While the first part 1121 can trigger the switch 14 on one side of the circuit board 13, it provides a basis for the second part 1122 to abut against the other side of the circuit board 13.

[0043] In some embodiments, the pressing part 111 may include a connected main body part 1111 and a limiting part 1112, and the limiting part 1112 is arranged around the pressing direction on the main body part 1111.

[0044] The main body part 1111 is the main part of the pressing part 111, forming the main structure of the pressing part 111. The outer contour of the main body part 1111 can be in regular shapes such as circular or rectangular, or in irregular special-shaped shapes. The limiting part 1112 is arranged around the edge of the outer contour of the main body part 1111, facilitating the fitting and limiting between the pressing part 111 and the housing 12. A groove 125 structure can be provided in the housing 12. When installing the key structure, the limiting part 1112 of the pressing part 111 can be made to enter the groove 125, thereby restricting the position of the pressing part 111 on the housing 12. Restricting the movement of the key structure in other directions outside the pressing direction.

[0045] The limiting portion 1112 may be arranged around the entire outer contour edge of the main body 1111, or may be arranged around a portion of the outer contour edge of the main body 1111. At the same time, the limiting portion 1112 may be arranged continuously on the main body 1111, or a plurality of limiting portions 1112 may be formed on the main body 1111 at intervals from each other.

[0046] In addition, the pressing portion 111 may include a pressing surface 102 and a limiting surface 103 that are arranged opposite to each other along the pressing direction, the pressing surface 102 is provided with a button mark 104 , and the middle portion 113 is connected to the limiting surface 103 .

[0047] The pressing surface 102 is the surface of the key structure facing the outside of the housing 12 when it is installed, and can be pressed by the operator. The key mark 104 set on the pressing surface 102 can be used by the operator to identify the purpose of the key structure. For example, the key mark 104 can be a pattern or a character. In the control operation of the key structure for indicating the power, a power mark symbol can be set on the pressing surface 102.

[0048] The limiting surface 103 is the surface facing the inside of the shell 12 when the key structure is installed, and can cooperate with the shell 12 to limit the pressing movement range of the pressing portion 111 to ensure that the key structure does not sink into the shell 12 when pressed and moved.

[0049] In some embodiments, the pressing portion 111 , the middle portion 113 and the triggering portion 112 may be an integrally formed structure.

[0050] That is, the various parts of the key structure are formed in one piece, which can ensure the overall strength of the key structure and improve the service life of the key structure. In actual situations, the various parts of the key structure can also be arranged in a split form.

[0051] like Figures 2 to 7 As shown, some embodiments of the present application further provide a battery pack 100, which includes a shell 12, a circuit board 13 and the above-mentioned button structure. The shell 12 is provided with an inner cavity and a mounting hole 123 connected to the inner cavity, and the inner cavity accommodates a battery cell 110. The circuit board 13 is connected to the shell 12, and the circuit board 13 is provided with a switch 14. The pressing portion 111 of the button structure is engaged in the mounting hole 123 and can move under the action of pressing. The yield area 101 of the pressing portion 111 close to the trigger portion 112 corresponds to the position of the battery cell. The first part 1121 of the trigger portion 112 triggers the switch 14 when moving, and the second part 1122 of the trigger portion 112 abuts against the circuit board 13.

[0052] By adopting the above-mentioned key structure, the battery pack 100 can avoid the positions of the battery cells 110 and the battery pack buckle 15. The middle part 113 of the key structure extends along the direction surrounding the battery cells 110, which can support the trigger part 112 to reach the position of the switch 14 on the circuit board 13 located above the battery cells 110. In the case where the pressing point and the starting point are not on the same straight line, the abutting action between a part of the structure of the trigger part 112 and the circuit board 13 can prevent the trigger part 112 from moving undesirably during the process of triggering the switch 14, thereby avoiding the situation where the switch 14 cannot be triggered correctly.

[0053] In an actual situation, the housing 12 can be formed by connecting a split base 121 and a cover 122, which is convenient for installing the key structure.

[0054] In addition, the housing 12 can be provided with a protrusion 124 extending from the hole wall of the self-installing hole 123, and the protrusion 124 is provided with a groove 125 for the middle part 113 to pass through.

[0055] The protrusion 124 is located at the position of the installation hole 123, and can abut against the position of the pressing part 111 after the key structure moves to complete the triggering of the switch 14, thereby restricting the continuous movement of the pressing part 111. At the same time, the protrusion 124 can facilitate the positioning of the key structure and increase the size of the positioning area. Moreover, the force generated by the protrusion 124 on the pressing part 111 can offset the deflection tendency of the key structure during the pressing movement to a certain extent, ensuring that the key structure remains in the direction directly facing the switch 14.

[0056] Some embodiments of the present application also provide a power tool, which includes the above-mentioned battery pack 100.

[0057] The power tool provides power for the operation of the actuator through the battery pack 100. The battery pack 100 can be connected to the driving part of the power tool, and input electric power to the driving part through the battery cells carried by itself, thereby driving the actuator to operate to complete the corresponding construction work. The power tool can be a power wrench, a grinding machine or a power reciprocating saw, etc.

[0058] Those of ordinary skill in the art can understand that the above-mentioned embodiments are specific embodiments for implementing the present application, and in actual applications, various changes can be made in form and details without departing from the spirit and scope of the present application.

Claims

1. A key structure for triggering a switch on a circuit board, characterized in that, include: The button body includes a pressing portion and a triggering portion arranged at intervals, and a middle portion connecting the pressing portion and the triggering portion, a yield area is formed on the side of the pressing portion close to the triggering portion, and the middle portion extends from the surface of the pressing portion in a curved shape along the direction surrounding the yield area. The triggering portion includes a first part and a second part that are connected, the first part is connected to the middle portion, and when the first part triggers the switch along the pressing direction, the second part abuts against the circuit board along the direction perpendicular to the pressing direction.

2. The key structure according to claim 1, characterized in that: The trigger portion is disposed to be staggered with the pressing portion in the pressing direction.

3. The key structure according to claim 1 or 2, characterized in that: The first portion extends from an extending end of the middle portion along a direction perpendicular to the pressing direction, and the second portion extends from an extending end of the first portion along the pressing direction.

4. The key structure according to claim 3, characterized in that: The first portion extends longer than the second portion.

5. The key structure according to claim 1, characterized in that: The pressing portion includes a main body portion and a limiting portion which are connected to each other, and the limiting portion is arranged on the main body portion around the pressing direction.

6. The key structure according to claim 1, characterized in that: The pressing portion comprises a pressing surface and a limiting surface which are arranged opposite to each other along the pressing direction, the pressing surface is provided with a key mark, and the middle portion is connected to the limiting surface.

7. The key structure according to claim 1, characterized in that: The pressing portion, the middle portion and the trigger portion are an integrally formed structure.

8. A battery pack, characterized in that, include: A shell body, provided with an inner cavity and a mounting hole communicating with the inner cavity, wherein the inner cavity accommodates a battery cell; A circuit board connected to the housing, wherein the circuit board is provided with a switch; The key structure described in any one of claims 1 to 7, wherein the pressing portion of the key structure is engaged at the mounting hole and can move under the action of pressing, the yield area of the pressing portion close to the trigger portion corresponds to the position of the battery cell, the first part of the trigger portion triggers the switch when moving, and the second part of the trigger portion abuts against the circuit board.

9. The battery pack according to claim 8, characterized in that: The shell is provided with a protruding portion extending from a hole wall of the mounting hole, and the protruding portion is provided with a groove for the middle portion to pass through.

10. An electric tool, characterized in that, Comprising the battery pack as described in claim 8 or 9.

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