CN219213042U

CN219213042U - Electric tool

Info

Publication number: CN219213042U
Application number: CN202320284269.1U
Authority: CN
Inventors: 何德涛; 欧阳智
Original assignee: Zhejiang Minglei Lithium Energy Technology Co ltd
Current assignee: Zhejiang Minglei Lithium Energy Technology Co ltd
Priority date: 2023-02-22
Filing date: 2023-02-22
Publication date: 2023-06-20
Anticipated expiration: 2033-02-22

Abstract

The present utility model provides an electric tool, which includes: a tool body provided with a first locking portion; the battery pack is provided with a second locking part matched with the first locking part, and the first locking part and the second locking part are mutually locked when relatively rotate around a first axis direction from an initial state to enter a locking state; when the electric tool is in the locking state, the battery pack is electrically connected with the tool main body. The utility model solves the technical problems that the battery pack is connected with the electric tool in an inserting way, so that the operation steps for assembling the battery pack are complicated, and the use experience of a user is reduced.

Description

Electric tool

Technical Field

The utility model relates to the technical field of electric tools, in particular to an electric tool.

Background

Currently, electric tools on the market can be roughly divided into two types, one of which is configured with a non-detachable built-in battery; another type of electric tool is provided with a detachable battery pack, and the detachable mode of the electric tool provided with the detachable battery pack is mainly based on guide rail insertion. In particular, when the battery pack needs to be locked to the electric tool, the battery pack needs to be fixed by means of the pressing type unlocking structure so as to prevent the battery pack from falling out of the guide rail.

However, there are at least one of the following technical problems in the related art: the battery pack is connected with the electric tool in an inserting mode, so that the operation steps of assembling the battery pack are complex, and the use experience of a user is reduced.

Disclosure of Invention

The utility model solves the technical problems that the battery pack is connected with the electric tool in an inserting way, so that the operation steps for assembling the battery pack are complicated, and the use experience of a user is reduced.

In order to solve the above problems, the present utility model provides an electric tool comprising: a tool body provided with a first locking portion; the battery pack is provided with a second locking part matched with the first locking part, and when the first locking part and the second locking part relatively rotate around the first axis direction from an initial state to enter a locking state, the first locking part and the second locking part are mutually locked; when the electric tool is in a locking state, the battery pack is electrically connected with the tool main body.

Compared with the prior art, the technical effect achieved by adopting the technical scheme is as follows: according to the technical scheme, after the first locking part and the second locking part are mutually matched, the battery pack and the tool main body can be locked to the tool main body after rotating around the first axis relatively by the preset angle, so that the effect of mounting the battery pack to the tool main body is achieved.

In one example of the present utility model, the electrical connection between the battery pack and the tool body is a plug-in connection.

Compared with the prior art, the technical effect achieved by adopting the technical scheme is as follows: compared with a point contact type electric connection mode, the plug-in electric connection mode improves the stability of the battery pack for supplying power to the tool main body.

In one example of the utility model, the tool body is provided with a first plug connector, and the battery pack is internally provided with a second plug connector matched with the first plug connector; wherein the second plug connector is rotatably or fixedly connected to the battery pack and/or the first plug connector is rotatably or fixedly connected to the tool body.

In one example of the present utility model, a battery pack is provided with a mounting groove for accommodating a first locking part and a second locking part; the mounting groove is also internally provided with a mounting part for mounting the second plug connector; wherein the second locking portion and the mounting portion are respectively disposed circumferentially about the first axis.

In one example of the present utility model, either one of the first locking portion and the second locking portion is a locking piece, and the other is a locking groove; and/or, either one of the first plug connector and the second plug connector is a squeezing spring piece with an elastic socket, and the other one is an inserting piece engaged with the squeezing spring piece; and/or the end part of the tool main body, which is correspondingly provided with the first plug connector, is also provided with a shielding piece, and the shielding piece is used for sealing a mounting groove of the battery pack when the tool main body is matched with the battery pack.

Compared with the prior art, the technical effect achieved by adopting the technical scheme is as follows: in one embodiment, the number of the locking grooves is two, the locking grooves are oppositely arranged in the mounting groove, one end of each locking groove is provided with an opening for the corresponding locking piece to enter, and the other end of each locking groove is provided with a closed structure for limiting the locking piece to be separated from the corresponding end. Specifically, the shape of the locking groove is an arc sliding rail, and the locking piece is an arc piece matched with the arc sliding rail, so that when the arc piece enters the arc sliding rail, the battery pack and the electric tool can be effectively ensured to stably rotate around the first axis direction, and further the electric connection stability of the first plug connector and the second plug connector is ensured. Further, shelter from the mounting groove through shelter from the piece in order to improve electric tool's outward appearance aesthetic feeling, and then improve user's use experience.

In an example of the present utility model, the second plug is an extrusion spring, the extrusion spring is clamped in an arc-shaped slot in the battery pack, and a center of a circle corresponding to the arc-shaped slot is disposed on the first axis.

Compared with the prior art, the technical effect achieved by adopting the technical scheme is as follows: further improving the stability of the electrical connection between the battery pack and the tool body.

In one example of the present utility model, the extrusion spring has at least one pair of extrusion springs, and the extrusion spring extends circumferentially around the first axis in the corresponding arc-shaped slot; the inserting sheets are in one-to-one joint with the extrusion elastic sheets, and the arc length of each inserting sheet extends circumferentially around the first axis; wherein, the arc length that the extrusion shell fragment axially extends around the first axis is different from the arc length of inserted sheet.

Compared with the prior art, the technical effect achieved by adopting the technical scheme is as follows: the arc of inserted sheet can be longer than the arc length of extrusion shell fragment to improved the stability of two electricity connection, avoided the inserted sheet too short and lead to under the unstable state of first locking part and second locking part locking, when battery package and tool main part take place the rotation of less angle, the inserted sheet still can keep stable grafting cooperation with extrusion shell fragment.

In one example of the present utility model, the positioning assembly is sandwiched between the battery pack and the tool body and is connected to a position where the first locking portion and the second locking portion are engaged to a locked state; the positioning component is used for increasing the resistance of the battery pack and the tool body to rotate relatively to be separated from the locking state.

Compared with the prior art, the technical effect achieved by adopting the technical scheme is as follows: through the mutual locating cooperation of the locating bulge and the locating groove, the battery pack and the tool main body can be in a stable locking state, and then stable electric connection between the battery pack and the tool main body is realized.

In one example of the present utility model, the first locking portion is a locking piece, and the second locking portion is a locking groove; the positioning assembly includes: the positioning protrusion is arranged on at least one end face of the locking piece along the first axis direction, and the positioning groove is arranged on the end face of the locking groove matched with the locking piece.

Compared with the prior art, the technical effect achieved by adopting the technical scheme is as follows: specifically, the location arch can be spherical protruding, and corresponding, the constant head tank is the spherical recess with spherical protruding structural adaptation, and the two simple structure through the mutual location cooperation of location arch and constant head tank, can make battery package and instrument main part be in stable locking state, and then realizes the stable electricity connection between the two.

In one example of the utility model, the lower end surface of the tool body is provided with a first pre-tightening positioning part, the bottom of the mounting groove of the battery pack is provided with a second pre-tightening positioning part, and when the lower end of the tool body is accommodated in the mounting groove, the first pre-tightening positioning part is matched with the second pre-tightening positioning part to provide a rotating pre-tightening force; and/or forming a first foolproof groove and a second foolproof groove with different circumferential intervals between the two ends of the two second locking parts, wherein the shapes of the first foolproof groove and the second foolproof groove are different, and the shapes of the two first locking parts are different and are respectively matched with the shapes of the first foolproof groove and the second foolproof groove; when the locking state is entered, one first locking part is screwed into one second locking part from the first fool-proof groove, and the other first locking part is screwed into the other second locking part from the second fool-proof groove.

Compared with the prior art, the technical effect achieved by adopting the technical scheme is as follows: on the one hand, through the mutual matching of the first pre-tightening positioning part and the second pre-tightening positioning part, the tight matching between the battery pack and the tool main body is improved, and the situation that the battery pack is unstable in power supply for the tool main body due to shaking of the battery pack relative to the tool main body in the actual use process caused by a large matching gap between the battery pack and the tool main body is avoided, so that the use efficiency of the electric tool is reduced; on the other hand, the fool-proof effect that the first fool-proof groove and the second fool-proof groove play in the process of matching and installing the battery pack and the tool main body is utilized, and the unexpected occurrence that the first locking part and the second locking part cannot successfully complete locking and matching due to incorrect installation is avoided, so that the assembly efficiency between the battery pack and the tool main body is improved.

After the technical scheme of the utility model is adopted, the following technical effects can be achieved:

(1) After the first locking part and the second locking part are mutually matched, the battery pack and the tool main body can be locked on the tool main body after relatively rotating around the first axis by a preset angle, so that the effect of mounting the battery pack on the tool main body is achieved, in addition, the operation is simple and reliable, the difficulty of mounting the battery pack is reduced, and the use experience of a user is improved;

(2) On the one hand, through the mutual matching of the first pre-tightening positioning part and the second pre-tightening positioning part, the tight matching between the battery pack and the tool main body is improved, and the situation that the battery pack is unstable in power supply for the tool main body due to shaking of the battery pack relative to the tool main body in the actual use process caused by a large matching gap between the battery pack and the tool main body is avoided, so that the use efficiency of the electric tool is reduced; on the other hand, the fool-proof effect that the first fool-proof groove and the second fool-proof groove play in the process of matching and installing the battery pack and the tool main body is utilized, and the unexpected occurrence that the first locking part and the second locking part cannot successfully complete locking and matching due to incorrect installation is avoided, so that the assembly efficiency between the battery pack and the tool main body is improved.

Drawings

Fig. 1 is a schematic partial structure of an electric tool according to an embodiment of the present utility model.

Fig. 2 is a schematic view of the structure of the battery pack of fig. 1.

Fig. 3 is a schematic view of the battery pack of fig. 2 from another view.

Fig. 4 is a schematic view of a part of the tool body in fig. 1.

Fig. 5 is a schematic view of the structure of fig. 4 at another view angle.

Reference numerals illustrate:

101-a first axis; 102-clockwise; 10-a tool body; 11-a first locking portion; 111-locking piece; 12-a first plug; 13-a handpiece; 14-a shutter; 20-battery pack; 21-mating end faces; 221-a first fool-proof groove; 222-a second fool-proof groove; 23-a second locking portion; 231-opening; 24-a second plug; 25-mounting bosses; 251-arc groove; 26-mounting groove.

Detailed Description

In order that the above objects, features and advantages of the utility model will be readily understood, a more particular description of the utility model will be rendered by reference to specific embodiments thereof which are illustrated in the appended drawings.

Referring to fig. 1, a schematic diagram of a partial structure of an electric tool according to an embodiment of the utility model is shown. Referring to fig. 2 to 5, the power tool includes, for example, a tool body 10 and a battery pack 20. The tool body 10 is provided with a first locking portion 11; the battery pack 20 is provided with a second locking part 23 which is matched with the first locking part 11, and when the first locking part 11 and the second locking part 23 relatively rotate around the first axis 101 from an initial state to enter a locking state, the first locking part 11 and the second locking part 23 are mutually locked; wherein, when the electric tool is in a locked state, the battery pack 20 is electrically connected with the tool body 10.

In the related art, the detachable mounting manner between the battery pack 20 and the power tool is a rail insertion manner, and specifically, locking the battery pack 20 to the hand-held portion is achieved in combination with a push-type unlocking structure provided on an outer surface of the power tool, or the battery pack 20 can be released from a rail on the hand-held portion by applying pressure to the push-type unlocking structure. Making the operation steps of disassembling the battery pack 20 cumbersome, resulting in reduced user experience.

In combination with the technical scheme, after the first locking part 11 and the second locking part 23 are mutually matched, the battery pack 20 and the tool main body 10 can be locked on the tool main body 10 after being rotated around the first axis 101 by a preset angle, so that the effect of mounting the battery pack 20 on the tool main body 10 is achieved.

In connection with fig. 3, in one embodiment, a direction in which the tool body 10 rotates clockwise 102 about the first axis 101 may be defined as a locking direction, that is, a direction in which the battery pack 20 rotates counterclockwise about the first axis 101 is a locking direction, and in contrast, a direction in which the tool body 10 rotates counterclockwise about the first axis 101 is defined as an unlocking direction, and a direction in which the battery pack 20 rotates clockwise 102 about the first axis 101 is a locking direction. The tool body 10 includes, for example, an output end portion and a hand-held portion connected to the output end portion, and the first locking portion 11 is disposed at a bottom end of the hand-held portion, specifically, the first locking portion 11 is disposed circumferentially around a lower end of the hand-held portion, the second locking portion 23 is disposed on the mating end surface 21 of the battery pack 20, and the second locking portion 23 is disposed circumferentially on the mating end surface 21 around the first axis 101.

Preferably, the battery pack 20 is electrically connected to the tool body 10 by plugging.

In particular, there are various common electrical connection methods, such as point-contact electrical connection. In combination with the present solution, the electrical connection of the socket improves the stability of the battery pack 20 for supplying power to the tool body 10 compared to the point contact electrical connection.

Preferably, the tool body 10 is provided with a first plug connector 12, and the battery pack 20 is internally provided with a second plug connector 24 matched with the first plug connector 12; wherein the second plug 24 is rotatably or fixedly connected to the battery pack 20 and/or the first plug 12 is rotatably or fixedly connected to the tool body 10.

In one embodiment, the second connector 24 is rotatably coupled to the battery pack 20 and the first connector 12 is also rotatably coupled to the tool body 10. Specifically, the battery pack 20 is further provided with a rotary table on the mating end surface 21 corresponding to the second locking portion 23, the rotary table is protruded or recessed onto the mating end surface 21, and the rotary table is rotatable about the first axis 101 relative to the battery pack 20. Further, when the second plug member 24 is mounted to the rotary table to enable the first plug member 12 to be engaged with the second plug member 24, if the tool main body 10 and the battery pack 20 are relatively rotated around the first axis 101, the first plug member 12 and the second plug member 24 can be kept relatively stationary under the driving of the rotary table, so that abrasion caused by the relative rotation of the first plug member 12 and the second plug member 24 is avoided, and poor electrical contact between the battery pack 20 and the tool main body 10 is avoided, thereby improving the normal service life of the electric tool and reducing the frequency of replacing the first plug member 12 and the second plug member 24. Wherein the first plug connector 12 and the second plug connector 24 are respectively sheet-shaped electric terminals.

In another embodiment, the second connector 24 and the first connector 12 are fixedly disposed on the battery pack 20 and the tool body 10, respectively. Specifically, the battery pack 20 is further provided with a mounting boss 25 on the mating end surface 21 corresponding to the second locking portion 23, the mounting boss 25 is fixedly disposed relative to the battery pack 20, and a plurality of receiving grooves for mounting the second plug connector 24 are formed in the mounting boss 25.

Further, the accommodating groove is an arc groove 251 extending axially around the first axis 101, and the arc groove 251 is surrounded by the second locking portion 23, that is, the arc groove 251 is disposed on one side of the second locking portion 23 near the first axis 101. When both the first locking portion 11 and the second locking portion 23 are relatively rotated from the initial state toward the direction of entering the locked state, that is, for example, during the clockwise 102 rotation of the tool body 10, the first plug member 12 is moved within the arcuate groove 251 toward the direction of approaching the second plug member 24, during which the battery pack 20 is not electrically connected to the tool body 10 until the first locking portion 11 and the second locking portion 23 complete the locking engagement while in the locked state, at which time the first plug member 12 also completes the engagement with the second plug member 24, thereby realizing the power supply of the tool body 10 by the battery pack 20, and furthermore, in the state where the first locking portion 11 and the second locking portion 23 are in the locking engagement with each other, the tool body 10 cannot be rotated in the clockwise 102 direction with respect to the battery pack 20 any more, avoiding the abrasion caused by the increase of friction between the first plug member 12 and the second plug member 24 due to frequent relative rotation between the tool body 10 and the battery pack 20.

Preferably, the battery pack 20 is provided with a mounting groove 26 for accommodating the first locking part 11 and the second locking part 23; and the mounting groove 26 is also provided with a mounting part for mounting the second plug connector 24; wherein the second locking portion 23 and the mounting portion are respectively arranged around the circumference of the first axis 101.

Preferably, either one of the first locking portion 11 and the second locking portion 23 is a locking piece 111, and the other is a locking groove; and/or, either one of the first connector 12 and the second connector 24 is a squeeze tab having an elastic socket, and the other is a tab engaged with the squeeze tab; and/or the end of the tool body 10, which is provided with the first plug 12 correspondingly, is also provided with a shutter 14, the shutter 14 being adapted to cover the mounting groove 26 when the tool body 10 is mated with the battery pack 20.

In one embodiment, the number of locking grooves is two, and the locking grooves are oppositely arranged in the mounting groove 26, one end of each locking groove is provided with an opening 231 for the corresponding locking piece 111 to enter, and the other end is provided with a closed structure for limiting the locking piece 111 from falling out from the end. Specifically, the shape of the locking groove is an arc-shaped slide rail, and the locking piece 111 is an arc-shaped piece adapted to the arc-shaped slide rail, so that when the arc-shaped piece enters the arc-shaped slide rail, the battery pack 20 and the electric tool can be effectively ensured to stably rotate around the first axis 101, and further the electrical connection stability of the first plug connector 12 and the second plug connector 24 is ensured.

Further, the mounting groove 26 is shielded by the shielding member 14 to improve the aesthetic appearance of the electric tool, thereby improving the user experience.

Preferably, the second plug 24 is an extrusion spring, the extrusion spring is clamped in an arc-shaped slot in the battery pack 20, and a center of a circle corresponding to the arc-shaped slot is disposed on the first axis 101. Further improving the electrical connection stability of the battery pack 20 and the tool body 10.

Preferably, the extrusion spring plate is provided with at least one pair, and the extrusion spring plate circumferentially extends around the first axis 101 in the corresponding arc-shaped clamping groove; the inserting sheets are in one-to-one joint with the extrusion elastic sheets, and the arc length of each inserting sheet extends circumferentially around the first axis 101; wherein the arc length of the extrusion dome extending axially around the first axis 101 is different from the arc length of the insert. For example, the arc shape of the insert may be longer than the arc length of the extrusion spring, so as to improve the stability of the electrical connection between the two, and avoid the insert from being too short, so that when the battery pack 20 and the tool body 10 rotate at a small angle in an unstable state of locking the first locking portion 11 and the second locking portion 23, the insert can still keep a stable plugging fit with the extrusion spring.

Preferably, the power tool includes, for example, a positioning assembly. The positioning component is clamped between the battery pack 20 and the tool main body 10 and is connected to the position where the first locking part 11 and the second locking part 23 are matched to the locking state; wherein the positioning assembly is used for increasing the resistance of the battery pack 20 and the tool body 10 to rotate relatively to be out of the locking state.

Further, the first locking portion 11 is a locking piece 111, and the second locking portion 23 is a locking groove; the positioning assembly includes, for example, a positioning protrusion and a positioning groove that cooperate to limit the relative rotation of the battery pack 20 and the tool body 10. The positioning protrusion is arranged on at least one end surface of the locking piece 111 along the direction of the first axis 101, and the positioning groove is arranged on the end surface of the locking groove for being matched with the locking piece 111.

Preferably, the lower end surface of the tool body 10 is provided with a first pre-tightening positioning part, the bottom of the mounting groove 26 of the battery pack 20 is provided with a second pre-tightening positioning part, and when the lower end of the tool body 10 is accommodated in the mounting groove 26, the first pre-tightening positioning part is matched with the second pre-tightening positioning part to provide a rotating pre-tightening force; and/or, the first foolproof groove 221 and the second foolproof groove 222 with different circumferential intervals are formed between two ends of the two second locking parts 23, the shapes of the first foolproof groove 221 and the second foolproof groove 222 are different, and the shapes of the two first locking parts 11 are different and are respectively matched with the shapes of the first foolproof groove 221 and the second foolproof groove 222; when the locking state is entered, one first locking part 11 is screwed into one second locking part 23 from the first fool-proof groove 221, and the other first locking part 11 is screwed into the other second locking part 23 from the second fool-proof groove 222. On the one hand, through the mutual matching of the first pre-tightening positioning part and the second pre-tightening positioning part, the tight matching between the battery pack 20 and the tool main body 10 is improved, and the situation that the battery pack 20 is unstable in power supply for the tool main body 10 due to shaking of the battery pack 20 relative to the tool main body 10 in the actual use process caused by a large matching gap between the battery pack 20 and the tool main body 10 is avoided, so that the use efficiency of the electric tool is reduced; on the other hand, by utilizing the fool-proof effect of the first fool-proof groove 221 and the second fool-proof groove 222 in the process of fitting and installing the battery pack 20 and the tool main body 10, the unexpected occurrence that the first locking part 11 and the second locking part 23 cannot smoothly complete the locking and matching due to the incorrect installation is avoided, thereby improving the assembly efficiency between the battery pack 20 and the tool main body 10.

Although the present utility model is disclosed above, the present utility model is not limited thereto. Various changes and modifications may be made by one skilled in the art without departing from the spirit and scope of the utility model, and the scope of the utility model should be assessed accordingly to that of the appended claims.

Claims

1. A power tool, comprising:

a tool body provided with a first locking portion;

the battery pack is provided with a second locking part matched with the first locking part, and the first locking part and the second locking part are mutually locked when relatively rotate around a first axis direction from an initial state to enter a locking state;

when the electric tool is in the locking state, the battery pack is electrically connected with the tool main body.

2. The power tool of claim 1, wherein the power tool comprises a power tool,

the battery pack is connected with the tool main body in an inserting mode.

3. The power tool according to claim 2, wherein,

the tool main body is provided with a first plug connector, and a second plug connector matched with the first plug connector is arranged in the battery pack;

wherein the second plug connector is rotatably or fixedly connected to the battery pack, and/or the first plug connector is rotatably or fixedly connected to the tool body.

4. The power tool according to claim 3, wherein,

the battery pack is provided with a mounting groove for accommodating the first locking part and the second locking part; the mounting groove is internally provided with a mounting part for mounting the second plug connector;

wherein the second locking portion and the mounting portion are disposed circumferentially about the first axis, respectively.

5. The power tool according to claim 3 or 4, wherein,

either one of the first locking part and the second locking part is a locking piece, and the other one is a locking groove;

and/or, either one of the first plug connector and the second plug connector is a pressing spring piece with an elastic socket, and the other one is a plug sheet engaged with the pressing spring piece;

and/or the end part of the tool main body, which is correspondingly provided with the first plug connector, is also provided with a shielding piece, and the shielding piece is used for sealing the mounting groove of the battery pack when the tool main body is matched with the battery pack.

6. The power tool of claim 5, wherein the power tool comprises,

the second plug connector is an extrusion spring, the extrusion spring is clamped in an arc-shaped clamping groove in the battery pack, and the circle center corresponding to the arc-shaped clamping groove is arranged on the first axis.

7. The power tool of claim 6, wherein the power tool comprises a power tool,

the extrusion elastic pieces are provided with at least one pair, and the extrusion elastic pieces circumferentially extend around the first axis in the corresponding arc-shaped clamping grooves;

the inserting sheets are in one-to-one joint with the extrusion elastic sheets, and the arc length of each inserting sheet extends circumferentially around the first axis;

the arc length of the extrusion elastic piece extending around the first axis in the axial direction is different from that of the inserting piece.

8. The power tool according to claim 1, comprising:

the positioning assembly is clamped between the battery pack and the tool main body, and is connected to the position where the first locking part and the second locking part are matched to the locking state;

wherein the positioning assembly is configured to increase resistance to relative rotation of the battery pack and the tool body to disengage from the locked condition.

9. The power tool of claim 8, wherein the first locking portion is a locking tab and the second locking portion is a locking slot; the positioning assembly includes:

the battery pack is matched with the tool body to limit the relative rotation of the battery pack and the tool body, the positioning protrusion is arranged on at least one end face of the locking piece along the first axis direction, and the positioning groove is arranged on the end face of the locking groove matched with the locking piece.

10. The power tool according to claim 8 or 9, wherein,

the lower end face of the tool main body is provided with a first pre-tightening positioning part, the bottom of the mounting groove of the battery pack is provided with a second pre-tightening positioning part, and when the lower end of the tool main body is accommodated in the mounting groove, the first pre-tightening positioning part is matched with the second pre-tightening positioning part to provide a rotating pre-tightening force;

and/or a first foolproof groove and a second foolproof groove with different circumferential intervals are formed between the two ends of the two second locking parts, the shapes of the first foolproof groove and the second foolproof groove are different, and the shapes of the two first locking parts are different and are respectively matched with the shapes of the first foolproof groove and the second foolproof groove; when the locking state is entered, one first locking part is screwed into one second locking part from the first fool-proof groove, and the other first locking part is screwed into the other second locking part from the second fool-proof groove.