Electric tool battery connector structure

Abstract

The utility model discloses a battery connector structure of an electric tool. The battery connector structure comprises a shell, a rotating piece, a connector and a universal ball head. The shell comprises a base and a limiting piece, and a shaft groove is defined by the base and the limiting piece. The rotating piece comprises a rotating part and a connecting part connected with the rotating part, the rotating part is rotatably installed in the shaft groove, an included angle exists between the extending direction of the connecting part and the axial direction of the rotating part, and a spherical groove is formed in the end, away from the rotating part, of the connecting part. The connector comprises a socket, and the socket is used for being connected with a plug connected to the wire. And the universal ball head sleeves the circumferential outer surface of the socket and is at least partially arranged in the spherical groove. According to the electric tool battery connector structure, the wire outlet direction of the wire can be adjusted through the rotating part, the wire can drive the universal ball head to rotate in the spherical groove after being stressed, the angle of the connector and the angle of the wire are adjusted, the wire is prevented from dragging the connector, and the service life of the connector and the service life of the wire are prolonged.

Description

Technical Field

[0001] The present application belongs to the technical field of electric tools, and in particular relates to a battery connector structure for electric tools. Background Art

[0002] When working, electric tools need to rely on a power supply to power them. Outdoors and in other environments where there is no power grid, backpack battery packs are generally used to power electric tools.

[0003] When a backpack battery pack powers an electric tool, it needs to be powered by wires and connectors. As a power source, the battery pack needs to be compatible with various tools through connectors. The outlet direction of existing backpack battery pack connectors and wires is fixed, and the angle cannot be adjusted, resulting in the electric tool only being able to cooperate with the connector at a fixed angle, which brings a lot of trouble to the design of the electric tool. In addition, the electric tool often drags the wire during operation. When the dragging force is transmitted to the connector, it is easy to cause damage to the connection between the wire and the connector and the connection between the connector and the battery pack.

[0004] The information disclosed in this background technology section is only intended to increase the understanding of the overall background of the application and should not be regarded as an admission or any form of suggestion that the information constitutes the prior art already known to a person skilled in the art. Utility Model Content

[0005] The purpose of the present application is to provide a power tool battery connector structure, which can change the angle between the rotating member and the base through the rotating member to adjust the outlet direction of the wire.

[0006] In order to achieve the above-mentioned purpose, a specific embodiment of the present application provides an electric tool battery connector structure for connecting to a wire, and the electric tool battery connector structure includes a shell, a rotating member, a connector and a universal ball head. The shell includes a base and a limit member, and the base and the limit member are surrounded by an axial groove. The rotating member includes a rotating part and a connecting part connected to the rotating part, and the rotating part is rotatably installed in the axial groove. The extending direction of the connecting part is at an angle with the axial direction of the rotating part, and a spherical groove is provided at one end of the connecting part away from the rotating part. The connector includes a socket, and the socket is used to connect to a plug connected to the wire. The universal ball head is sleeved on the circumferential outer surface of the socket and is at least partially disposed in the spherical groove.

[0007] In one or more embodiments of the present application, a first limiting portion is provided on the base or the limiting member, and a plurality of second limiting portions are provided in the circumferential direction of the rotating portion. The second limiting portions are configured to rotate with the rotating portion and to engage or disengage with the first limiting portion in a controlled manner. When the first limiting portion and the second limiting portion are engaged, the position of the rotating portion is locked.

[0008] In one or more embodiments of the present application, there is one first limiting portion and at least two second limiting portions.

[0009] In one or more embodiments of the present application, the rotating part includes a rotating part main body and a deformation body coaxially connected, and the second limiting part is arranged on the deformation body. During the process of engagement or disengagement between the first limiting part and the second limiting part, the deformation body is deformed axially and / or radially.

[0010] In one or more embodiments of the present application, the deformable body is arranged at one end of the rotating part body, an axially extending cavity is provided in the deformable body, a through elongated hole is provided in the circumferential direction of the outer surface of the deformable body, the second limiting portion is at least partially arranged on the side wall of the elongated hole away from the rotating part body or on the end surface of the deformable body away from the rotating part body, one or more radially protruding and axially extending reinforcing ribs are provided on the cavity wall of the cavity, and the elongated hole is arranged around the reinforcing ribs.

[0011] In one or more embodiments of the present application, the second limiting portion is arranged on the side wall of the elongated hole away from the rotating part body and protrudes from the side wall of the elongated hole, the first limiting portion extends into the elongated hole, the side wall of the elongated hole away from the rotating part body is the reference plane, and the distance between one end of the first limiting portion close to the reference plane and the reference plane is smaller than the distance between one end of the second limiting portion away from the reference plane and the reference plane.

[0012] In one or more embodiments of the present application, the second limiting portion includes at least a first protrusion, a second protrusion, a third protrusion and a fourth protrusion, the first protrusion and the second protrusion are respectively located at the ends of the elongated hole, the third protrusion and the fourth protrusion are located in the middle of the elongated hole, the first protrusion defines the first position of the rotating portion, the second protrusion defines the second position of the rotating portion, and the third protrusion and the fourth protrusion define the third position of the rotating portion.

[0013] In one or more embodiments of the present application, a receiving groove is provided on the bottom wall of the base, which is perpendicular to the shaft groove and connected to the shaft groove, and the receiving groove extends to both sides of the shaft groove.

[0014] In one or more embodiments of the present application, the rotating portion is in the first position, and the connecting portion is at least partially received in one end of the receiving groove.

[0015] In one or more embodiments of the present application, the rotating portion is at the second position, and the connecting portion is at least partially received in the other end of the receiving groove.

[0016] In one or more embodiments of the present application, the rotating portion is at the third position, and the connecting portion is perpendicular to the receiving groove.

[0017] In one or more embodiments of the present application, there is an angle between the extension direction of the connecting part and the axial direction of the rotating part, a spherical groove is provided at one end of the connecting part away from the rotating part, and the connector includes a connector body connected to the wire and a universal ball head detachably installed at the end of the connector body, and the universal ball head is arranged in the spherical groove.

[0018] In one or more embodiments of the present application, a limiting groove recessed toward the connecting portion is provided in the spherical groove, and a protrusion is provided on the universal ball head, and the protrusion at least partially extends into the limiting groove.

[0019] In one or more embodiments of the present application, the protrusion is made of an elastic material.

[0020] In one or more embodiments of the present application, a curved surface is provided at one end of the protrusion facing the limiting groove.

[0021] In one or more embodiments of the present application, one end of the protrusion facing the limiting groove is configured to be spherical or ellipsoidal.

[0022] In one or more embodiments of the present application, the connecting portion includes a first shell and a second shell that are detachably connected, and the first shell and the second shell are arranged to form a spherical groove.

[0023] Compared with the prior art, the rotating part of the rotating member of the present application can rotate in the shaft groove to adjust the outlet direction of the wire to adapt to the constantly changing angle of the power tool during use.

[0024] In addition, when the wire is subjected to force, it will drive the universal ball head to rotate in the spherical groove, adjust the angle of the connector and the wire, eliminate part of the shear force between the wire and the connector, prevent the wire from dragging the connector, and increase the service life of the connector and the wire. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for the embodiments or the description of the prior art are briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present application, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0026] Figure 1 An exploded structural diagram of a power tool battery connector structure in one embodiment of the present application;

[0027] Figure 2 A top view of a battery connector structure for a power tool in one embodiment of the present application;

[0028] Figure 3 This is an exploded structural diagram of a base and a rotating member in one embodiment of the present application;

[0029] Figure 4 This is a three-dimensional structural diagram of the first shell in one embodiment of the present application;

[0030] Figure 5 This is a cross-sectional structural diagram of a base and a rotating member in one embodiment of the present application;

[0031] Figure 6 This is an exploded structural diagram of a rotating member and a connector in one embodiment of the present application;

[0032] Figure 7 This is a three-dimensional structural diagram of a universal ball head in one embodiment of the present application;

[0033] Figure 8 A cross-sectional structural diagram of a power tool battery connector structure in one embodiment of the present application;

[0034] Fig. 9 Another cross-sectional structural diagram of a power tool battery connector structure in one embodiment of the present application;

[0035] Fig.10 A bottom view of a battery connector structure for a power tool in one embodiment of the present application;

[0036] Fig.11 for Fig.10 A partial enlarged view of part A.

[0037] Explanation of main figure marks: 1. base, 101. shaft groove, 102. first limiting portion, 103. receiving groove, 2. rotating member, 21. rotating portion, 211. rotating portion main body, 212. deformable body, 22. connecting portion, 221. first shell, 222. second shell, 201. second limiting portion, 2011. first protrusion, 2012. second protrusion, 2013. third protrusion, 2014. fourth protrusion, 202. long hole, 203. cavity, 204. reinforcing rib, 205. spherical groove, 206. limiting groove, 3. connector, 31. plug, 32. socket, 4. wire, 5. limiting member, 6. top cover, 7. universal ball head, 701. protrusion. DETAILED DESCRIPTION

[0038] In order to enable those skilled in the art to better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work should fall within the scope of protection of the present application.

[0039] Reference Figures 1 to 11 As shown, in one embodiment of the present application, an electric tool is disclosed, including an electric tool battery connector structure and a wire. The electric tool battery connector structure is used to connect with the wire 4. The electric tool battery connector structure includes a housing, a rotating member 2, a connector 3 and a universal ball head 7. The housing includes a base 1 and a stopper 5. The base 1 and the stopper 5 are surrounded by an axial groove 101. The rotating member 2 includes a rotating part 21 and a connecting part 22 connected to the rotating part 21. The rotating part 21 is rotatably installed in the axial groove 101. The extending direction of the connecting part 22 is at an angle with the axial direction of the rotating part 21. A spherical groove 205 is provided at one end of the connecting part 22 away from the rotating part 21. The connector 3 includes a socket 32, and the socket 32 ​​is used to connect with the plug 31 connected to the wire 4. The universal ball head 7 is sleeved on the circumferential outer surface of the socket 32 ​​and is at least partially arranged in the spherical groove 205.

[0040] According to the above structural design, since the rotating part 21 of the rotating member 2 can rotate in the shaft groove 101, the angle between its connecting part 22 and the base 1 can be changed, and the outlet direction of the wire 4 can be adjusted to adapt to the constantly changing angle of the power tool during use, thereby avoiding the wire 4 from involving the connector 3 and the rotating member 2, and improving the overall service life of the power tool battery connector structure.

[0041] In addition, since the universal ball head 7 can rotate in any direction in the spherical groove 205, when the power tool twists and drags the wire 4 during operation, the wire 4 will be driven to rotate by the universal ball head 7 after being subjected to force, thereby adjusting the angle of the connector 3 and the wire 4, eliminating part of the shear force between the wire 4 and the connector 3, preventing the wire 4 from dragging the connector 3, and increasing the service life of the connector 3 and the wire 4.

[0042] In one embodiment, in order to fix the outlet direction of the wire 4, that is, to lock the angle of the rotating portion 21, refer to Figures 3 to 5 As shown, the base 1 is provided with a first limiting portion 102, and a plurality of second limiting portions 201 are provided on the circumference of the rotating portion 21. The second limiting portions 201 are configured to rotate with the rotating portion 21 and to be controlled to engage or disengage with the first limiting portion 102. When the first limiting portion 102 is engaged with the second limiting portion 201, the position of the rotating portion 21 is locked.

[0043] In other embodiments, the first limiting portion 102 may also be disposed on the limiting member 5 .

[0044] The first limiting portion 102 and the second limiting portion 201 can be connected by abutment, clamping or interference fit, so that a single first limiting portion 102 is connected to a single second limiting portion 201 to lock the position of the rotating portion 21, so that the wire 4 can maintain a relatively stable outlet direction.

[0045] When the first limit portion 102 and the second limit portion 201 are connected by abutment, both can be set to a protruding columnar structure, a protruding structure or a structure of other shapes. When the position of the rotating part 2 is fixed, the first limit portion 102 abuts against the second limit portion 201 in the circumferential direction of the rotating part 21, providing the second limit portion 201 with two abutment forces in opposite directions and basically tangential to the outer periphery of the rotating part 21, thereby preventing the rotating part 21 from rotating in any direction.

[0046] When the operator applies an external force to the rotating member 2 that enables the second limiting portion 201 to overcome the above-mentioned abutting force, the second limiting portion 201 can overcome the restriction of the first limiting portion 102, disengage from the second limiting portion 201, and release the lock on the rotating portion 21, so that the rotating portion 21 can rotate in the shaft groove 101, thereby changing the outlet direction of the wire 4.

[0047] Those skilled in the art will appreciate that when two abutting forces in opposite directions are provided to the second limit portion 201 at the same time, when the second limit portion 201 is constructed as an integrated columnar structure, a protruding structure or a structure of other shapes, after the second limit portion 201 is engaged with the first limit portion 102, the first limit portion 102 generally needs to be located on both sides of the second limit portion 201, thereby limiting the second limit portion 201 between the two first limit portions 102 to lock the angle of the rotating portion 21.

[0048] On the contrary, when the first limiting portion 102 is constructed as an integrated columnar structure, a protruding structure or a structure of other shapes, after the second limiting portion 201 is engaged with the first limiting portion 102, the second limiting portion 201 generally needs to be located on both sides of the first limiting portion 102 to lock the angle of the rotating portion 21.

[0049] The number and position of the first limit portion 102 and the second limit portion 201 can be set according to actual needs. Specifically, one first limit portion 102 can be provided, and at least two second limit portions 201 can be provided. Two adjacent second limit portions 201 are spaced apart by a certain angle, and the angle is the angle that the rotating portion 21 rotates from one locking position to another adjacent locking position.

[0050] Preferably, the interval angle between two adjacent second limiting portions 201 can be set to approximately 90°, and the outlet direction of the wire 4 relative to the base 1 is correspondingly set to approximately 0°, 90° and 180°, that is, the rotating member 2 can have a certain movable space in three positions.

[0051] In one embodiment, during the process of engagement or disengagement of the first limiting portion 102 and the second limiting portion 201, a certain abutment force (i.e., extrusion force) is generated between the two, and the first limiting portion 102 or the second limiting portion 201 can be deformed to enable the two to complete engagement or disengagement.

[0052] Alternatively, considering that the abutment force borne by the first limiting portion 102 and the second limiting portion 201 will be transmitted to the rotating portion 21 and the base 1, the first limiting portion 102 and the second limiting portion 201 can also be engaged or disengaged by deforming the rotating portion 21 or the base 1.

[0053] When the two are engaged or disengaged mainly by relying on the deformation of the first limiting portion 102 or the second limiting portion 201 itself, the first limiting portion 102 and the second limiting portion 201 can both be set to a structure with a certain elasticity or be made of elastic material to provide a larger deformation space for the first limiting portion 102 and the second limiting portion 201.

[0054] When the two are engaged or disengaged mainly by deformation of the rotating part 21 or the base 1, a partial area on the rotating part 21 or the base 1 can be constructed as a structure with relatively small rigidity or made of a material with a certain elasticity, so that the partial area on the rotating part 21 or the base 1 is more likely to produce elastic deformation.

[0055] Preferably, refer to Figure 4 As shown, a partial area on the rotating portion 21 is constructed as a deformation structure to provide sufficient deformation space for the first limiting portion 102 and the second limiting portion 201 to engage or disengage.

[0056] Specifically, the rotating part 21 includes a rotating part body 211 and a deformable body 212 which are coaxially connected, and the second limiter 201 is arranged on the deformable body 212. The rigidity of the deformable body 212 may be different from that of the rotating part body 211, or both may have the same rigidity, and the rigidity difference between the rotating part body 211 and the deformable body 212 may be achieved by using different materials or structural designs.

[0057] Preferably, the deformation body 212 is made of plastic.

[0058] The deformation direction of the deformation body 212 can be radial or axial, or both radial and axial.

[0059] When the deformation body 212 is mainly deformed radially, the second limiting portion 201 can be directly arranged along the circumferential direction on the outer surface of the deformation body 212. When the first limiting portion 102 is engaged or disengaged from the second limiting portion 201, the first limiting portion 102 squeezes the second limiting portion 201 and generates a radial squeezing force. After the radial squeezing force is transmitted to the deformation body 212, the deformation body 212 is deformed radially (concave inward in the radial direction), so that the first limiting portion 102 can be engaged or disengaged from the second limiting portion 201.

[0060] When the deformation body 212 is deformed radially and axially at the same time, the deformation body 212 can be set at the end of the rotating part main body 211, and the second limiting portion 201 can be set at the end of the deformation body 212 away from the rotating part main body 211. After the first limiting portion 102 squeezes the second limiting portion 201, the end of the deformation body 212 bends in a direction close to or away from its axis, and deforms radially and axially at the same time, so that the first limiting portion 102 can engage or disengage with the second limiting portion 201.

[0061] When the deformation body 212 is mainly deformed along the axial direction, Figure 4 and Figure 5 As shown, the deformation body 212 is arranged at the end of the rotating part body 211 and extends out of the shaft groove 101. An axially extending cavity 203 is provided in the deformation body 212. An arc-shaped long hole 202 is provided on the circumferential direction of the outer surface of the deformation body 212. The second limiting portion 201 is arranged on the side wall of the long hole 202 away from the rotating part body 211. The first limiting portion 102 extends into the long hole 202 to engage or disengage with any one of the second limiting portions 201 in a controlled manner.

[0062] According to the above structural design, due to the presence of the long hole 202 and the cavity 203, the rigidity of the deformable body 212 will be smaller than that of the rotating part body 211, especially on the side of the long hole 202 away from the rotating part body 211, the rigidity of the deformable body 212 is relatively smaller, and it is easier to produce axial elastic deformation after being subjected to force. Therefore, when the first limiting part 102 and the second limiting part 201 are disengaged, the squeezing force generated between the two can drive the deformable body 212 to deform axially, drive the second limiting part 201 away from the first limiting part 102, and make the second limiting part 201 engage or disengage with the second limiting part 201.

[0063] In order to further improve the elastic deformation ability of the deformation body 212, improve its yield strength, and extend its service life, in one embodiment, referring to Figure 4 As shown, at least one radially protruding and axially extending reinforcing rib 204 is disposed on the cavity wall of the cavity 203 , and the elongated hole 202 is disposed around the reinforcing rib 204 .

[0064] In one embodiment, the second limiting portion 201 is arranged on the side wall of the elongated hole 202 away from the rotating portion main body 211 and protrudes from the side wall of the elongated hole 202, the first limiting portion 102 extends into the elongated hole 202, and the side wall of the elongated hole 202 away from the rotating portion main body 211 is a reference plane, and the distance between the end of the first limiting portion 102 close to the reference plane and the reference plane is smaller than the distance between the end of the second limiting portion 201 away from the reference plane and the reference plane, so that the first limiting portion 102 and the second limiting portion 201 have an overlapping portion in the radial perspective of the rotating portion 21, ensuring that the first limiting portion 102 can contact the second limiting portion 201 and generate abutment force when approaching the second limiting portion 201, so that the deformable body 212 is deformed.

[0065] Reference Figure 4 , Figure 5 and Fig.11 As shown, the second limiting portion 201 includes a first protrusion 2011 , a second protrusion 2012 , a third protrusion 2013 and a fourth protrusion 2014 .

[0066] Specifically, the first protrusion 2011 is located at one end of the elongated hole 202 , the second protrusion 2012 is located at the other end of the elongated hole 202 , and the third protrusion 2013 and the fourth protrusion 2014 are located in the middle of the elongated hole 202 .

[0067] Preferably, the first protrusion 2011 and one end wall of the elongated hole 202 are engaged with the first limiting portion 102 to define the first position of the rotating portion 21. The second protrusion 2012 and the other end wall of the elongated hole 202 are engaged with the first limiting portion 102 to define the second position of the rotating portion 21. The third protrusion 2013 and the fourth protrusion 2014 are engaged with the first limiting portion 102 to define the third position of the rotating portion 21.

[0068] Those skilled in the art will appreciate that the first protrusion 2011 may cooperate with another protrusion to define the first position of the rotating portion 21 , and the second protrusion 2012 may cooperate with another protrusion to define the second position of the rotating portion 21 .

[0069] Furthermore, a receiving groove 103 is provided on the bottom wall of the base 1 , which is perpendicular to the shaft groove 101 and communicated with the shaft groove 101 , and the receiving groove 103 extends to both sides of the shaft groove 101 .

[0070] When the rotating portion 21 is at the first position, the outlet direction of the wire 4 can be set to 0°. At this time, the connecting portion 22 is at least partially received in one end of the receiving groove 103 .

[0071] When the rotating portion 21 is at the second position, the outlet direction of the wire 4 can be set to 180°. At this time, the connecting portion 22 is at least partially received in the other end of the receiving groove 103 .

[0072] When the rotating portion 21 is at the third position, the outlet direction of the wire 4 can be set to 90°. At this time, the connecting portion 22 is perpendicular to the receiving groove 103 .

[0073] In one embodiment, reference Figure 4 and Figure 7 As shown, a limiting groove 206 is provided in the spherical groove 205, and a protrusion 701 is provided on the universal ball head 7, and the protrusion 701 at least partially extends into the limiting groove 206. The limiting groove 206 has a certain length along the extension direction of the connecting portion 22, and also has a certain length in the extension direction perpendicular to the connecting portion 22.

[0074] After the protrusion 701 and the limiting groove 206 matched therewith are provided, the swing range of the universal ball head 7 can be limited without affecting the normal swing of the universal ball head 7, thereby preventing the wire 4 from being broken due to excessive rotation.

[0075] In one embodiment, in order to reduce the friction between the protrusion 701 and the limiting groove 206, a curved surface is provided at one end of the protrusion 701 facing the limiting groove 206 to reduce the contact area between the protrusion 701 and the limiting groove 206, thereby reducing the friction between the two.

[0076] Preferably, one end of the protrusion 701 facing the limiting groove 206 is constructed in a spherical or ellipsoidal shape.

[0077] Preferably, the protrusion 701 is made of elastic material.

[0078] Preferably, two protrusions 701 and two limiting grooves 206 are provided correspondingly, and the two limiting grooves 206 and the two protrusions 701 are symmetrically provided.

[0079] In one embodiment, reference Figure 3 , Figure 4 and Figure 6 As shown, the connecting portion 22 includes a first shell 221 and a second shell 222 that are detachably connected. The first shell 221 and the second shell 222 can be connected by bolts. A part of the spherical groove 205 is provided on the first shell 221, and the remaining part of the spherical groove 205 is provided on the second shell 222. After the two are assembled, a complete spherical groove 205 is formed to facilitate the installation of the universal ball head 7 in the spherical groove 205. At the same time, after the first shell 221 and the second shell 222 are disassembled, it is also convenient to take the universal ball head 7 out of the spherical groove 205, so as to separate the wire 4 and the rotating member 2, which is convenient for carrying and storage.

[0080] In one embodiment, reference Figures 1 to 3 As shown, the housing further includes a top cover 6 , which is detachably mounted on the base 1 by bolts and covers the limiting member 5 .

[0081] It is obvious to those skilled in the art that the present application is not limited to the details of the exemplary embodiments described above, and that the present application can be implemented in other specific forms without departing from the spirit or essential features of the present application. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive, and the scope of the present application is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present application. Any figure mark in the claims should not be regarded as limiting the claim involved.

[0082] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each implementation mode may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A power tool battery connector structure, used for connecting with a wire (4), characterized in that: The electric tool battery connector structure comprises: The housing comprises a base (1) and a limiting member (5), wherein the base (1) and the limiting member (5) are surrounded by an axis groove (101); A rotating member (2), comprising a rotating portion (21) and a connecting portion (22) connected to the rotating portion (21), wherein the rotating portion (21) is rotatably mounted in the shaft groove (101), an extending direction of the connecting portion (22) forms an angle with the axial direction of the rotating portion (21), and a spherical groove (205) is provided at one end of the connecting portion (22) away from the rotating portion (21); A connector (3) comprising a socket (32) for connecting to a plug (31) connected to a wire (4); and The universal ball head (7) is sleeved on the circumferential outer surface of the socket (32) and is at least partially disposed in the spherical groove (205).

2. The electric tool battery connector structure according to claim 1, characterized in that: A first limiting portion (102) is provided on the base (1) or the limiting member (5), and a plurality of second limiting portions (201) are provided on the circumference of the rotating portion (21), wherein the second limiting portions (201) are configured to rotate with the rotating portion (21) and to be controlled to engage or disengage with the first limiting portion (102), and when the first limiting portion (102) is engaged with the second limiting portion (201), the position of the rotating portion (21) is locked.

3. The electric tool battery connector structure according to claim 2, characterized in that: There is one first limiting portion (102), and there are at least two second limiting portions (201).

4. The electric tool battery connector structure according to claim 2, characterized in that: The rotating part (21) comprises a rotating part body (211) and a deformable body (212) which are coaxially connected, and the second limiting part (201) is arranged on the deformable body (212). When the first limiting part (102) and the second limiting part (201) are engaged or disengaged, the deformable body (212) is deformed in the axial direction and / or radial direction.

5. The electric tool battery connector structure according to claim 4, characterized in that: The deformable body (212) is arranged at one end of the rotating part body (211), and an axially extending cavity (203) is arranged in the deformable body (212). A through-going long hole (202) is arranged in the circumferential direction of the outer surface of the deformable body (212). The second limiting portion (201) is at least partially arranged on the side wall of the long hole (202) away from the rotating part body (211) or on the end surface of the deformable body (212) away from the rotating part body (211). One or more radially protruding and axially extending reinforcing ribs (204) are arranged on the cavity wall of the cavity (203), and the long hole (202) is arranged around the reinforcing rib (204).

6. The electric tool battery connector structure according to claim 5, characterized in that: The second limiting portion (201) is arranged on the side wall of the elongated hole (202) away from the rotating part body (211) and protrudes from the side wall of the elongated hole (202); the first limiting portion (102) extends into the elongated hole (202); the side wall of the elongated hole (202) away from the rotating part body (211) is a reference plane; the distance between the end of the first limiting portion (102) close to the reference plane and the reference plane is smaller than the distance between the end of the second limiting portion (201) away from the reference plane and the reference plane.

7. The electric tool battery connector structure according to claim 6, characterized in that: The second limiting portion (201) comprises at least a first convex point (2011), a second convex point (2012), a third convex point (2013) and a fourth convex point (2014); the first convex point (2011) and the second convex point (2012) are respectively located at the ends of the elongated hole (202); the third convex point (2013) and the fourth convex point (2014) are located in the middle of the elongated hole (202); the first convex point (2011) defines a first position of the rotating portion (21); the second convex point (2012) defines a second position of the rotating portion (21); and the third convex point (2013) and the fourth convex point (2014) define a third position of the rotating portion (21).

8. The electric tool battery connector structure according to claim 7, characterized in that: A receiving groove (103) is provided on the bottom wall of the base (1) and is perpendicular to the shaft groove (101) and communicated with the shaft groove (101), and the receiving groove (103) extends to both sides of the shaft groove (101); The rotating portion (21) is in a first position, and the connecting portion (22) is at least partially received in one end of the receiving groove (103); The rotating portion (21) is at a second position, and the connecting portion (22) is at least partially received in the other end of the receiving groove (103); The rotating portion (21) is at a third position, and the connecting portion (22) is perpendicular to the receiving groove (103).

9. The electric tool battery connector structure according to claim 1, characterized in that: A limiting groove (206) is provided in the spherical groove (205), a protrusion (701) is provided on the universal ball head (7), the protrusion (701) at least partially extends into the limiting groove (206), the protrusion (701) is made of elastic material, a curved surface is provided at one end of the protrusion (701) facing the limiting groove (206), and the end of the protrusion (701) facing the limiting groove (206) is constructed in a spherical or ellipsoidal shape.

10. The electric tool battery connector structure according to claim 1, characterized in that: The connecting portion (22) comprises a first shell (221) and a second shell (222) which are detachably connected, and the first shell (221) and the second shell (222) are arranged to surround and form the spherical groove (205).

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