Clamp

Abstract

The utility model discloses a clamp, and relates to the technical field of motor welding, the clamp is used for clamping a copper wire terminal of a motor stator, the clamp comprises a mounting seat, a plurality of clamping assemblies and a driving assembly, the mounting seat is used for placing the motor stator, the plurality of clamping assemblies are arranged on the mounting seat, each clamping assembly comprises a plurality of clamping parts, and in the same clamping assembly, the driving assembly is arranged on the mounting seat. At least one of the multiple clamping parts can move relative to the other clamping parts so that the clamping assembly can be switched between the clamping state of clamping the copper wire terminal and the opening state of releasing the copper wire terminal, and the driving assembly is arranged on the installation base and can move relative to the installation base. The driving assembly is configured to abut against and drive at least one clamping part in the clamping assemblies to synchronously move when moving, so that the clamping assemblies are synchronously switched to the clamping state from the opening state. According to the clamp, the clamping effect on the copper wire terminal is good, operation is more convenient and faster during clamping, and the clamping efficiency is higher.

Description

Technical Field

[0001] This application relates to the field of motor welding technology, and in particular to a clamp. Background Technology

[0002] During the assembly of some motors (such as flat-wire motors), clamps are used to hold the corresponding copper wire terminals on the stator windings together for easy soldering. In related technologies, some clamps include a mounting base with multiple clamping components. Each clamping component has multiple clamping parts, and the mounting base is equipped with a screw for each clamping component. The screw is connected to one of the clamping parts of the clamping component. Rotating the screw brings adjacent clamping parts of the same clamping component closer together, thus clamping the copper wire terminals. Compared to traditional clamps for copper wire terminals, this method allows for individual clamping of the same group of copper wire terminals using corresponding clamping components, resulting in better clamping performance. However, clamping requires sequentially operating multiple screws, which is cumbersome, time-consuming, labor-intensive, and inefficient. Utility Model Content

[0003] This application aims to address at least one of the technical problems existing in the prior art. To this end, this application proposes a clamp that not only provides a better clamping effect on copper wire terminals, but also makes the clamping operation more convenient and the clamping efficiency higher.

[0004] According to an embodiment of this application, a clamp is used to clamp copper wire terminals of a motor stator. The clamp includes a mounting base, a plurality of clamping assemblies, and a drive assembly. The mounting base is used to house the motor stator. The plurality of clamping assemblies are disposed on the mounting base. Each clamping assembly includes a plurality of clamping portions. In the same clamping assembly, at least one of the clamping portions is movable relative to the other clamping portions to switch the clamping assembly between a clamping state that clamps the copper wire terminals and an open state that releases the copper wire terminals. The drive assembly is disposed on the mounting base and is movable relative to the mounting base. The drive assembly is configured to abut against and drive at least one of the clamping portions of each clamping assembly to move synchronously when moving, so that each clamping assembly synchronously switches from the open state to the clamping state.

[0005] The clamp according to the embodiments of this application has at least the following beneficial effects:

[0006] Before welding, the motor stator can be placed on the mounting base, with the motor stator and the mounting base approximately coaxial. The multiple sets of copper wire terminals of the motor stator are then extended between two adjacent clamping parts of the corresponding clamping components. The drive component is then moved relative to the mounting base. When the drive component moves, it abuts against and pushes at least one clamping part of each clamping component to move synchronously, thereby allowing each clamping component to switch from the open state to the clamping state synchronously. The two adjacent clamping parts of each clamping component move closer to each other and clamp all the copper wire terminals. This makes the operation more convenient, the clamping efficiency higher, and different sets of copper wire terminals can be clamped individually by the corresponding clamping components, resulting in a better clamping effect.

[0007] According to some embodiments of this application, a plurality of clamping components are arranged circumferentially along the mounting base, and in the same clamping component, a plurality of clamping portions are arranged radially along the mounting base, and at least one clamping portion is capable of moving radially along the mounting base to realize the switching of the clamping component between the open state and the clamping state.

[0008] According to some embodiments of this application, the drive assembly is configured to move relative to the mounting base along the axial direction of the mounting base to drive at least one of the clamping portions of each clamping assembly to move radially along the mounting base.

[0009] According to some embodiments of this application, the drive assembly has a drive ramp that is inclined relative to the axial direction of the mounting base. The drive ramp abuts against at least one of the clamping portions of each of the clamping assemblies. When the drive assembly moves, the drive ramp drives the abutting clamping portion to move radially along the mounting base.

[0010] According to some embodiments of this application, one of the plurality of clamping portions of the same clamping assembly is an outer ring clamping portion disposed adjacent to the outer peripheral wall of the mounting base, and the other is an inner ring clamping portion disposed adjacent to the center line of the mounting base, wherein the outer ring clamping portion is capable of radial movement along the mounting base, and / or the inner ring clamping portion is capable of radial movement along the mounting base.

[0011] According to some embodiments of this application, both the outer ring clamping portion and the inner ring clamping portion are capable of radial movement along the mounting base. The driving assembly includes a first driving member and a plurality of second driving members. The first driving member is configured as a ring structure and surrounds the center line of the mounting base. The plurality of second driving members are arranged circumferentially along the mounting base and correspond to the plurality of clamping assemblies. When the first driving member moves, it can abut against and drive each of the inner ring clamping portions to move outward synchronously. When each of the second driving members moves, it can abut against and drive the outer ring clamping portion of the corresponding clamping assembly to move inward synchronously. Alternatively, when the first driving member moves, it can abut against and drive each of the outer ring clamping portions to move inward synchronously. When each of the second driving members moves, it can abut against and drive the inner ring clamping portion of the corresponding clamping assembly to move outward synchronously.

[0012] According to some embodiments of this application, the clamp further includes a locking assembly comprising a plurality of locking portions and an elastic ring. The locking portions are rotatably connected to the mounting base. The plurality of locking portions are arranged circumferentially along the mounting base and correspond to a plurality of second driving members. The locking portions have a locked state for locking the corresponding second driving member and an unlocked state for releasing the lock. The elastic ring surrounds the centerline of the mounting base and abuts against all the locking portions. When the second driving member moves to put the clamping assembly in the clamping state, the elastic ring can push each of the locking portions to rotate to switch from the unlocked state to the locked state.

[0013] According to some embodiments of this application, a first elastic reset member is provided between the second driving member and the mounting base. The first elastic reset member is configured to drive the second driving member to reset to an initial state. When the second driving member is in the initial state, it protrudes from one end of the mounting base along the axial direction, and the protruding ends of each second driving member are flush with the mounting base. And / or, the second driving member includes a pushing part, an elastic part, and an abutting part arranged sequentially along its own moving direction. The two ends of the elastic part abut against the pushing part and the abutting part, respectively, and the abutting part abuts against the outer ring clamping part or the inner ring clamping part.

[0014] According to some embodiments of this application, each of the clamping components includes at least three clamping portions, such that when the outer ring clamping portion moves inward and / or the inner ring clamping portion moves outward, any two adjacent clamping portions of the clamping component can move closer to each other to clamp the copper wire terminal.

[0015] According to some embodiments of this application, at least one of the two adjacent clamping portions of each clamping assembly is provided with a second elastic reset member between itself and the mounting base. The second elastic reset member is used to drive the two adjacent clamping portions away from each other.

[0016] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0017] The present application will be further described below with reference to the accompanying drawings and embodiments, wherein:

[0018] Figure 1 This is a schematic diagram of the structure of the clamp in some embodiments of this application;

[0019] Figure 2 for Figure 1 A cross-sectional view in one of the directions;

[0020] Figure 3 for Figure 1 A cross-sectional view from another direction;

[0021] Figure 4 A cross-sectional view in one direction after the motor stator has been mounted on the fixture;

[0022] Figure 5 for Figure 4 Enlarged view of point A in the middle;

[0023] Figure 6 A cross-sectional view from another direction after the motor stator has been mounted on the fixture;

[0024] Figure 7 for Figure 6 Enlarged view of point B in the middle.

[0025] Icon labels:

[0026] Mounting base 100; first elastic reset member 101; second elastic reset member 102; first end 103; second end 104; annular step 105; mounting cylinder 106;

[0027] Clamping assembly 200; clamping part 201; first rolling part 202; second rolling part 203; sliding part 204;

[0028] Drive assembly 300; drive ramp 301; first drive member 302; second drive member 303; push part 304; elastic part 305; abutment part 306; connecting groove 307; slot 308;

[0029] Locking assembly 400; locking part 401; elastic ring 402; protrusion 403;

[0030] Motor stator 500; copper wire terminal 501. Detailed Implementation

[0031] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0032] In the description of this application, it should be understood that the orientation descriptions, such as up, down, etc., are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0033] In the description of this application, "multiple" refers to two or more. The use of "first" and "second" is for the purpose of distinguishing technical features only and should not be construed as indicating or implying relative importance, or implicitly indicating the number of technical features indicated, or the order in which the technical features are indicated.

[0034] In the description of this application, unless otherwise expressly defined, terms such as "setup," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this application in conjunction with the specific content of the technical solution.

[0035] During the assembly of some motors (such as flat-wire motors), clamps are used to hold the corresponding copper wire terminals on the stator windings together for easy soldering. Traditional clamps for holding copper wire terminals are typically jaw-type clamps. Specifically, multiple jaws are arranged circumferentially around the clamp and can move radially. To hold copper wire terminals, the terminals in the same group are placed between two adjacent jaws. Moving the jaws closer to the clamp's centerline reduces the distance between adjacent jaws, thus holding all the copper wire terminals. However, with this clamping method, each jaw exerts a circumferential force on the others, creating a mutual influence. If some jaws are not properly installed or deformed, the clamping effect on all copper wire terminals will be affected.

[0036] To address the problems of traditional clamps, a different clamping device has been proposed in related technologies. This device includes a mounting base with multiple clamping assemblies, each comprising multiple clamping parts. The mounting base is equipped with a screw for each clamping assembly, connected to one of the clamping parts of the assembly. Rotating the screw moves the corresponding clamping part, bringing adjacent clamping parts of the same assembly closer together to clamp the copper wire terminals. Compared to traditional clamps for copper wire terminals, this method allows for individual clamping of the same group of copper wire terminals using corresponding clamping assemblies, minimizing interference between different groups of clamping assemblies and resulting in better clamping performance. However, clamping requires sequentially operating multiple screws, which is cumbersome, time-consuming, labor-intensive, and inefficient.

[0037] Therefore, this application proposes a fixture that can effectively improve the above-mentioned problems.

[0038] The following is for reference. Figures 1 to 7 Describes a clamp according to an embodiment of this application.

[0039] The clamp according to an embodiment of this application, referencing Figures 1 to 7 As shown, the clamp is used to hold the copper wire terminals 501 of the motor stator 500. The clamp includes a mounting base 100, a plurality of clamping components 200, and a drive component 300. In some embodiments, the motor stator 500 may be a flat wire motor stator or other motor stators 500 suitable for the clamps of this application, which will not be described in detail here.

[0040] Among them, reference Figure 2 , Figure 3 , Figure 5 and Figure 7 As shown, the mounting base 100 is used to house the motor stator 500. For example, the mounting base 100 can be an annular structure, with a first end 103 and a second end 104 opposite each other along the axial direction. The second end 104 can be provided with an annular step 105, the center line of which can coincide with the center line of the mounting base 100. One end of the motor stator 500 can be coaxially mounted within the annular step 105, thereby realizing the placement of the motor stator 500. Of course, the mounting base 100 can also place the motor stator 500 in other suitable ways, which will not be described in detail here.

[0041] refer to Figures 2 to 7As shown, multiple clamping components 200 are disposed on the mounting base 100. For example, the multiple clamping components 200 can be evenly arranged along the circumference of the mounting base 100 to adapt to the arrangement of the copper wire terminals 501 on the motor stator 500. Each clamping component 200 includes multiple clamping parts 201. For example, the clamping component 200 can include two, three, four, or other suitable numbers of clamping parts 201. The multiple clamping parts 201 of the same clamping component 200 can be arranged radially along the mounting base 100. Of course, the arrangement direction of the multiple clamping parts 201 of the same clamping component 200 can also be slightly inclined relative to the radial direction of the mounting base 100. In the same clamping assembly 200, at least one of the multiple clamping parts 201 can move relative to the other clamping parts 201. For example, all the clamping parts 201 in the same clamping assembly 200 can move, or some of the clamping parts 201 in the same clamping assembly 200 can move relative to the other clamping parts 201. It is only necessary that when the clamping parts 201 move, two adjacent clamping parts 201 can move closer or further away from each other, so that the clamping assembly 200 can switch between the clamping state of clamping the copper wire terminal 501 and the opening state of releasing the copper wire terminal 501. The movable clamping part 201 can be slidably mounted on the mounting base 100.

[0042] refer to Figures 1 to 4 as well as Figure 6 As shown, the drive assembly 300 is disposed on the mounting base 100 and can move relative to the mounting base 100. The drive assembly 300 can be slidably mounted on the mounting base 100 to achieve movement relative to the mounting base 100. The drive assembly 300 is configured to abut against and drive at least one clamping part 201 of each clamping assembly 200 to move synchronously when moving. Specifically, the drive assembly 300 can abut against and drive some clamping parts 201 of each clamping assembly 200 to move synchronously when moving, or it can abut against and drive all clamping parts 201 of each clamping assembly 200 to move synchronously, so that each clamping assembly 200 switches synchronously from the open state to the clamping state.

[0043] It should be noted that the drive assembly 300 can be driven by an external power mechanism to achieve movement. For example, when the fixture of this application is installed on the welding equipment of the motor stator 500, the drive assembly 300 can be driven by a power mechanism such as a hydraulic cylinder, a pneumatic cylinder or an electric push rod on the welding equipment. Alternatively, a power mechanism such as a hydraulic cylinder, a pneumatic cylinder or an electric push rod for driving the drive assembly 300 can be directly installed on the mounting base 100. In addition, the drive assembly 300 can also be pushed manually, which will not be elaborated here.

[0044] In this embodiment, before welding, the motor stator 500 can be placed on the mounting base 100. The motor stator 500 and the mounting base 100 are approximately coaxial, and multiple sets of copper wire terminals 501 of the motor stator 500 extend between two adjacent clamping portions 201 of the corresponding clamping components 200. Then, the drive component 300 is moved relative to the mounting base 100. When the drive component 300 moves, it abuts against and pushes at least one clamping portion 201 of each clamping component 200 to move synchronously, thereby causing each clamping component 200 to switch synchronously from the open state. In the clamping state, the two adjacent clamping parts 201 of each clamping component 200 move closer to each other and clamp all the copper wire terminals 501, making the operation more convenient and the clamping efficiency higher. Moreover, the copper wire terminals 501 of different groups are clamped individually by the corresponding clamping components 200. At the same time, the clamping components 200 are driven by the drive component 300 through contact. Therefore, if one clamping component 200 is not installed properly or is deformed, it will not affect the clamping work of other clamping components 200, thus making the clamping effect of the fixture of this application better.

[0045] Based on the above embodiments, in order to better adapt the fixture of this application to the copper wire terminals 501 of the motor stator 500, reference is made to... Figures 1 to 3 , Figure 5 as well as Figure 7 As shown, in some embodiments of this application, multiple clamping components 200 can be arranged along the circumference of the mounting base 100. For example, multiple clamping components 200 can be arranged evenly and at intervals along the circumference of the mounting base 100. This is just compatible with the way that multiple sets of copper wire terminals 501 of the motor stator 500 are evenly and at intervals along the circumference of the motor stator 500, which makes it more convenient for the clamping components 200 to clamp the corresponding set of copper wire terminals 501, and the clamping effect is better. Furthermore, in the same clamping assembly 200, multiple clamping parts 201 are arranged radially along the mounting base 100, and at least one clamping part 201 can move radially along the mounting base 100. This is exactly compatible with the arrangement of multiple pairs of copper wire terminals 501 of the same group of copper wire terminals 501 of the motor stator 500 along the radial direction of the motor stator 500. This makes it easier for the clamping assembly 200 to clamp the corresponding group of copper wire terminals 501, resulting in a better clamping effect and enabling better switching between the open state and the clamping state of the clamping assembly 200.

[0046] To facilitate the external power mechanism in driving the drive assembly 300, refer to Figures 1 to 3 , Figure 4 as well as Figure 6As shown, in some embodiments of this application, the drive assembly 300 is configured to move relative to the mounting base 100 along the axial direction of the mounting base 100 to drive at least one clamping portion 201 of each clamping assembly 200 to move radially along the mounting base 100. In this embodiment, the axial movement of the drive assembly 300 along the mounting base 100 converts the axial movement into a radial thrust on the clamping portion 201. Compared to a drive assembly 300 having multiple drive portions that move radially along the mounting base 100, and multiple drive portions driving at least one clamping portion 201 of each clamping assembly 200, the drive assembly 300 of this application is more convenient to install and more convenient for an external power mechanism to drive the drive assembly 300.

[0047] It should be noted that when the motor stator 500 is placed on the second end 104 of the mounting base 100, the drive assembly 300 can drive at least one clamping part 201 of each clamping assembly 200 to move radially along the mounting base 100 when it moves from the first end 103 of the mounting base 100 along the second end 104, so as to avoid the motor stator 500 interfering with the movement of the drive assembly 300, and to make it more convenient for the external power mechanism to drive the drive assembly 300.

[0048] To convert the axial movement of the drive assembly 300 along the mounting base 100 into a radial thrust on the clamping part 201 along the mounting base 100, refer to Figure 2 , Figure 3 , Figure 5 as well as Figure 7 As shown, in some embodiments of this application, the drive assembly 300 has a drive ramp 301, which is inclined relative to the axial direction of the mounting base 100, and the drive ramp 301 abuts against at least one clamping portion 201 of each clamping assembly 200.

[0049] For example, both the outermost and innermost clamping portions 201 of the clamping assembly 200 can move radially along the mounting base 100, and the driving ramps 301 can be two sets, as shown in the reference. Figure 5As shown, the first set of driving ramps 301 can be adjacent to the outer peripheral wall of the mounting base 100 and face the center line of the mounting base 100. The first set of driving ramps 301 can extend outward from the first end 103 to the second end 104. That is, in the direction from the first end 103 to the second end 104, the distance between the first set of driving ramps 301 and the center line of the mounting base 100 gradually increases. The first set of driving ramps 301 can abut against the outer edge of the outermost clamping part 201 of the clamping assembly 200. The second set of driving ramps 301 can be adjacent to the center line of the mounting base 100 and away from the center line of the mounting base 100. The second set of driving ramps 301 can extend inward from the first end 103 to the second end 104. That is, in the direction from the first end 103 to the second end 104, the distance between the second set of driving ramps 301 and the center line of the mounting base 100 gradually decreases. The second set of driving ramps 301 can abut against the inner edge of the innermost clamping part 201 of the clamping assembly 200.

[0050] Thus, when the drive assembly 300 moves from the first end 103 of the mounting base 100 toward the second end 104, the drive inclined surface 301 can drive the clamping part 201 that it abuts to move radially along the mounting base 100, thereby realizing the switching of the clamping assembly 200 from the open state to the clamping state. The structure is simple and the operation is convenient.

[0051] It should be noted that in some embodiments, the axial movement of the drive assembly 300 along the mounting base 100 can also be converted into a radial thrust on the clamping part 201 along the mounting base 100 in other ways. For example, a linkage slider mechanism can be provided between the drive assembly 300 and the clamping part 201.

[0052] To facilitate the driving of the inclined surface 301 to abut against the clamping part 201, refer to Figure 2 , Figure 3 and Figure 5As shown, in some embodiments of this application, one of the multiple clamping portions 201 of the same clamping assembly 200 is an outer ring clamping portion disposed adjacent to the outer peripheral wall of the mounting base 100, and the other is an inner ring clamping portion disposed adjacent to the center line of the mounting base 100. The outer ring clamping portion is movable radially along the mounting base 100, and / or the inner ring clamping portion is movable radially along the mounting base 100. For example, the outer ring clamping portion may be movable radially along the mounting base 100 while the inner ring clamping portion remains stationary; the inner ring clamping portion may be movable radially along the mounting base 100 while the outer ring clamping portion remains stationary; or both the outer ring clamping portion and the inner ring clamping portion may be movable radially along the mounting base 100. In this embodiment, the outer ring clamping part can move radially along the mounting base 100, and / or the inner ring clamping part can move radially along the mounting base 100. This makes it easier for the driven inclined surface 301 to abut against the drive, and can avoid interference between the drive assembly 300 and the copper wire terminal 501.

[0053] When both the outer ring clamping part and the inner ring clamping part can move radially along the mounting base 100, in order to make the movement of the outer ring clamping part or the inner ring clamping part more smooth when the driving ramp 301 drives it, refer to Figure 2 , Figure 3 , Figure 5 and Figure 7 As shown, in some embodiments of this application, a rotatable first rolling part 202 is installed on the inner edge of the inner ring clamping part, and abuts against the corresponding driving inclined surface 301 through the first rolling part 202. A rotatable second rolling part 203 is installed on the outer edge of the outer ring clamping part, and abuts against the corresponding driving inclined surface 301 through the second rolling part 203. In this embodiment, the first rolling part 202 and the second rolling part 203 are provided, and the driving inclined surface 301 and the corresponding clamping part 201 have rolling friction. When the driving inclined surface 301 drives the corresponding clamping part 201 to move along the mounting base 100, the frictional resistance is smaller, thereby reducing jamming and making the drive smoother.

[0054] When both the outer ring clamping part and the inner ring clamping part can move radially along the mounting base 100, refer to Figures 1 to 7 As shown, in some embodiments of this application, the driving component 300 may include a first driving element 302 and a plurality of second driving elements 303.

[0055] Among them, reference Figures 1 to 3As shown, the first driving member 302 is configured as a ring structure and surrounds the center line of the mounting base 100. For example, the inner side of the mounting base 100 may be provided with a mounting cylinder 106, which can pass through the axial direction of the mounting base 100 and can be coaxial with the mounting base 100. The first driving member 302 can be slidably mounted in the mounting cylinder 106 along the axial direction of the mounting cylinder 106. The side wall of the first driving member 302 away from the center line of the mounting base 100 may have a driving inclined surface 301. The driving inclined surface 301 surrounds the first driving member 302 in the circumferential direction of the mounting base 100. The driving inclined surface 301 can abut against the first rolling part 202 on the inner edge of all the inner ring clamping parts. In this way, when the first driving member 302 moves, it can abut against and drive each inner ring clamping part to move outward synchronously.

[0056] refer to Figures 1 to 4 as well as Figure 6 As shown, multiple second driving members 303 are arranged circumferentially along the mounting base 100 and correspond to multiple clamping assemblies 200. For example, multiple second driving members 303 can be slidably mounted on the outer side of the mounting base 100 along the axial direction of the mounting base 100. Specifically, the outer side of the mounting base 100 can be provided with multiple guide structures such as sliding holes, sliding grooves or guide rails. Multiple guide structures can be arranged circumferentially along the mounting base 100. Multiple second driving members 303 are slidably mounted on multiple guide structures respectively. The side of each second driving member 303 near the center line of the mounting base 100 can have a driving inclined surface 301. The driving inclined surface 301 can abut against the second rolling part 203 on the outer edge of the corresponding outer ring clamping part. In this way, when each second driving member 303 moves, it can abut against and drive the outer ring clamping part of the corresponding clamping assembly 200 to move inward synchronously.

[0057] In this embodiment, when the first driving member 302 moves, it abuts against and drives each inner ring clamping part to move outward synchronously. When each second driving member 303 moves, it abuts against and drives the corresponding outer ring clamping part of the clamping assembly 200 to move inward synchronously. In this way, any two adjacent clamping parts 201 of each clamping assembly 200 can move closer to each other to clamp the copper wire terminal 501, thereby facilitating the switching of the clamping assembly 200 from the open state to the clamping state. The first driving member 302 is set as a ring structure, which can drive all inner ring clamping parts to move outward synchronously. The structure is simple and the driving is convenient. In this application, multiple second driving members 303 are provided and each drives the outer ring clamping part of the corresponding clamping component 200 to move inward. Compared with only one second driving member 303 which is also a ring structure, the second driving member 303 in this application only needs to bear the frictional force applied by a single outer ring clamping part, and the frictional resistance is smaller, resulting in smoother sliding. Furthermore, since each second driving member 303 is separated from each other, the mutual influence between different clamping components 200 can be further reduced, resulting in better clamping effect.

[0058] Furthermore, if the second driving member 303 is also configured as a ring structure, the coaxiality requirement between the first driving member 302 and the second driving member 303 during assembly is very high. If there is an error in the fit between the second driving member 303 and the first driving member 302 in one position, it will cause errors in the fit between the second driving member 303 and the first driving member 302 in all other positions. This will not only make it difficult for the first driving member 302 and the second driving member 303 to slide, but also result in a poor clamping effect of the clamping assembly 200. In this application, the second driving member 303 is configured as multiple members and each fits with the first driving member 302 individually. The fit accuracy between any one second driving member 303 and the first driving member 302 will not affect the fit accuracy between other second driving members 303 and the first driving member 302, and the required fit accuracy is lower.

[0059] It should be noted that in some other embodiments, the first driving member 302 may move to abut against and drive each outer ring clamping part to move synchronously inward, and the second driving member 303 may move to abut against and drive the corresponding inner ring clamping part of the clamping assembly 200 to move synchronously outward. Furthermore, the driving assembly 300 may have other structures. For example, when one of the inner ring clamping part and the outer ring clamping part is movable while the other is fixed, it may only include the first driving member 302 or the second driving member 303. Additionally, the second driving member 303 may be a single, ring-shaped structure, and the second driving member 303 may be coaxial with the first driving member 302.

[0060] Based on the driving component 300 including a first driving element 302 and a plurality of second driving elements 303, see reference Figures 1 to 4 as well as Figure 6 As shown, in some embodiments of this application, the inner sidewall of the first driving member 302 may be provided with a connecting groove 307, which may extend circumferentially along the first driving member 302 to facilitate engagement with an external power mechanism and be driven by the external power mechanism. When all the second driving members 303 are in the initial state, the end of the second driving member 303 near the second end 104 of the mounting base 100 may be flush with the axial direction of the mounting base 100. Thus, the external power mechanism may be provided with a first abutment ring, which is used to abut against the end of all the second driving members 303 near the second end 104 of the mounting base 100 to facilitate synchronous movement of all the second driving members 303.

[0061] Based on the second driving component 303 having multiple components, in order to improve the clamping effect of the clamping assembly 200, refer to Figures 1 to 4 as well as Figure 6 As shown, in some embodiments of this application, the clamp further includes a locking assembly 400, which includes a plurality of locking portions 401 and an elastic ring 402.

[0062] The locking part 401 is rotatably connected to the mounting base 100, and the rotation axis of the locking part 401 can be perpendicular to the axial direction of the mounting base 100. Multiple locking parts 401 are arranged circumferentially along the mounting base 100 and correspond to multiple second driving members 303. For example, when the second driving member 303 is mounted on the outside of the mounting base 100, the locking part 401 can be mounted on the outside of the mounting base 100 and located outside the corresponding second driving member 303; when the second driving member 303 is mounted on the inside of the mounting base 100, the locking part 401 can be mounted on the inside of the mounting base 100 and located inside the corresponding second driving member 303. The locking part 401 has a locked state for locking the corresponding second driving member 303 and an unlocked state for unlocking. For example, a slot 308 may be provided on the second driving member 303, and the locking part 401 may be provided with a snap-fit ​​part. The locking part 401 can rotate to snap its snap-fit ​​part into the slot 308. In this case, the locking part 401 is in a locked state that restricts the sliding of the second driving member 303. The locking part 401 can rotate to move its snap-fit ​​part out of the slot 308. In this case, the locking part 401 is in an unlocked state that unlocks the second driving member 303 so that the second driving member 303 can slide. The elastic ring 402 surrounds the center line of the mounting base 100 and abuts against all locking parts 401. For example, when the second drive member 303 is installed on the outside of the mounting base 100, the elastic ring 402 can be sleeved on the outside of all locking parts 401 and elastically abut against all locking parts 401. When the second drive member 303 is installed on the inside of the mounting base 100, the elastic ring 402 can be located on the inside of all locking parts 401 and elastically abut against all locking parts 401.

[0063] In this embodiment, when the second driving member 303 moves to put the clamping assembly 200 in a clamping state, the locking part 401 is aligned with the slot 308. The elastic ring 402 can then push the locking parts of each locking part 401 to rotate and engage in the slot 308, thereby locking the second driving member 303 and preventing it from sliding freely. This keeps the clamping assembly 200 in a clamping state and improves the clamping effect on the copper wire terminal 501.

[0064] It should be noted that the locking part 401 can also lock the second driving member 303 in other ways. For example, the slot 308 can be provided on the locking part 401, and the second driving member 303 can be provided with a snap-fit ​​part that can be snapped into the slot 308.

[0065] To facilitate rotating the locking part 401 to the unlocked state, refer to... Figure 2As shown, in some embodiments of this application, the locking part 401 is provided with a protrusion 403. When the locking part 401 is installed on the outer side of the mounting base 100, the protrusion 403 can protrude from the outer peripheral wall of the mounting base 100. When the locking part 401 is installed on the inner side of the mounting base 100, the protrusion 403 can protrude from the inner peripheral wall of the mounting base 100. Each protrusion 403 can be flush with the axial direction of the mounting base 100.

[0066] In this embodiment, a protrusion 403 is provided. The external power mechanism can be equipped with a second abutment ring. The second abutment ring is used to abut and push all the protrusions 403, so as to facilitate driving all the locking parts 401 to rotate synchronously to the unlocked state, making the operation more convenient. Of course, in some embodiments of this application, the locking parts 401 can also be rotated manually.

[0067] After soldering, to facilitate the release of copper wire terminal 501, refer to... Figure 3 As shown, in some embodiments of this application, a first elastic reset member 101 is provided between the second driving member 303 and the mounting base 100. The first elastic reset member 101 can be a coil spring, an elastic sheet, an elastic rubber block, or other suitable elastic structure. When the second driving member 303 moves to a position where the clamping assembly 200 is in a clamping state, the first elastic reset member 101 undergoes elastic deformation to generate an elastic restoring force. When the locking part 401 unlocks the second driving member 303, the first elastic reset member 101 can drive the second driving member 303 to reset to its initial state through its own elastic restoring force, thereby releasing the pressure on the outer ring clamping part or the inner ring clamping part. The clamping assembly 200 can then quickly switch from the clamping state to the open state, thereby quickly releasing the copper wire terminal 501 and making the operation more convenient.

[0068] Furthermore, in the initial state, the second driving member 303 protrudes from one end of the mounting base 100 along its axial direction, and each second driving member 303 protrudes from one end of the mounting base 100 flush with it. For example, in the initial state, the second driving member 303 may be the second end 104 protruding from the mounting base 100 along its axial direction, with the end of the second driving member 303 protruding from the second end 104 of the mounting base 100 flush with it along its axial direction. In this way, the external power mechanism can be provided with a first abutment ring, which is used to abut against the end of all the second driving members 303 near the second end 104 of the mounting base 100, so as to facilitate the synchronous movement of all the second driving members 303.

[0069] To improve the clamping effect of the clamping part 201, refer to Figure 2As shown, in some embodiments of this application, the second driving member 303 includes a pushing part 304, an elastic part 305, and an abutting part 306, which can be arranged sequentially along the moving direction of the second driving member 303. Specifically, when the motor stator 500 is placed on the second end 104 of the mounting base 100, the pushing part 304, the elastic part 305, and the abutting part 306 can be arranged sequentially along the direction from the first end 103 to the second end 104. The pushing part 304 is abutted by an external power mechanism. The two ends of the elastic part 305 abut against the pushing part 304 and the abutting part 306, respectively. The elastic part 305 can be a coil spring, an elastic sheet, an elastic rubber block, or other suitable elastic structure. The abutting part 306 can have a driving slope 301 and abut against the outer ring clamping part or the inner ring clamping part through the driving slope 301. When the external power mechanism abuts against and drives the pusher 304 to move, the elastic part 305 compresses and pushes the abutment part 306 to move. The abutment part 306 can abut against the outer ring clamping part or the inner ring clamping part to move radially along the mounting base 100 by driving the inclined surface 301.

[0070] In this embodiment, an elastic part 305 is provided between the pushing part 304 and the abutting part 306. This allows the abutting part 306 to elastically abut against the outer ring clamping part or the inner ring clamping part, thereby allowing two adjacent clamping parts 201 to elastically abut against the corresponding copper wire terminal 501. This allows the clamping distance between two adjacent clamping parts 201 to be appropriately adjusted according to the size of the copper wire terminal 501. This not only avoids the copper wire terminal 501 being unstable due to an excessively large clamping distance between two adjacent clamping parts 201, but also avoids the copper wire terminal 501 being crushed due to an excessively small clamping distance between two adjacent clamping parts 201, resulting in a better clamping effect on the copper wire terminal 501.

[0071] To accommodate cases where the same group of copper wire terminals 501 in a portion of the motor stator 500 includes at least two pairs of copper wire terminals 501, refer to Figure 2 and Figure 5As shown, in some embodiments of this application, each clamping assembly 200 includes at least three clamping portions 201. When the outer ring clamping portion moves inward and / or the inner ring clamping portion moves outward, any two adjacent clamping portions 201 of the clamping assembly 200 can approach each other to clamp the copper wire terminal 501. For example, each clamping assembly 200 may include four clamping portions 201. In addition to the outer ring clamping portion and the inner ring clamping portion, it may also include two intermediate clamping portions. All four clamping portions 201 can be configured to move radially along the mounting base 100. When the copper wire terminal 501 extends between two adjacent clamping portions 201, and the outer ring clamping portion moves inward and the inner ring clamping portion moves outward, the outer ring clamping portion and the inner ring clamping portion will abut and push the corresponding copper wire terminal 501 to move. The corresponding copper wire terminal 501 can then push the intermediate clamping portion to move, thereby clamping all the copper wire terminals 501.

[0072] In this embodiment, each clamping component 200 includes at least three clamping parts 201, which can be applied to situations where the same group of copper wire terminals 501 of some motor stators 500 includes at least two pairs of copper wire terminals 501, thus improving practicality.

[0073] It should be noted that the number of intermediate clamping parts can be one, three, or more, depending on the number of copper wire terminals 501 in the same group on the motor stator 500. Furthermore, among the multiple clamping parts 201 of the clamping assembly 200, all clamping parts 201 can be movable, or some clamping parts 201 can be fixed while others can be movable. For example, when the clamping assembly 200 includes three clamping parts 201, and both the outer and inner clamping parts are movable, the intermediate clamping part may remain stationary. It is understood that in order to clamp all copper wire terminals 501, at least one of any two adjacent clamping parts 201 must be movable. When the outer or inner clamping part moves to clamp the outermost or innermost copper wire terminal 501, the outermost or innermost copper wire terminal 501 can push all movable clamping parts 201 to move.

[0074] After soldering, to further facilitate the release of copper wire terminal 501, refer to Figure 2 , Figure 3 , Figure 5 and Figure 7As shown, at least one of two adjacent clamping portions 201 of each clamping assembly 200 is provided with a second elastic reset member 102 between itself and the mounting base 100. The second elastic reset member 102 is used to drive the two adjacent clamping portions 201 away from each other. For example, when all clamping portions 201 can move radially along the mounting base 100, each clamping portion 201 can be provided with a second elastic reset member 102 between itself and the mounting base 100. Specifically, the mounting base 100 can be provided with a mounting groove corresponding to each second elastic reset member 102. The second elastic reset member 102 is installed in the mounting groove. One end of the second elastic reset member 102 can abut against the side wall of the mounting groove, and the other end can abut against the corresponding clamping portion 201. The second elastic reset member 102 can elastically extend and retract radially along the mounting base 100. The second elastic reset member 102 can be a coil spring, an elastic sheet, an elastic rubber block, or other suitable elastic structure.

[0075] In this embodiment, at least one of the two adjacent clamping portions 201 of each clamping assembly 200 is provided with a second elastic reset member 102 between it and the mounting base 100. Thus, when the two adjacent clamping portions 201 approach each other and clamp the copper wire terminal 501, the second elastic reset member 102 will elastically deform and generate an elastic restoring force. After the copper wire terminal 501 is welded and the drive assembly 300 is reset, the two adjacent clamping portions 201 can move away from each other under the action of the elastic restoring force of the second elastic reset member 102, thereby quickly releasing the copper wire terminal 501 and making the operation more convenient.

[0076] It should be noted that when one of the two adjacent clamping parts 201 is movable and the other is fixed, a second elastic reset member 102 may be provided between the movable clamping part 201 and the mounting base 100. When both clamping parts 201 are movable, a second elastic reset member 102 may be provided between one of the clamping parts 201 and the mounting base 100, or both clamping parts 201 and the mounting base 100 may be provided with a second elastic reset member 102. It is sufficient that the two adjacent clamping parts 201 can be driven to move away from each other.

[0077] To accommodate situations where the distance between the same group of copper wire terminals 501 on the motor stator 500 is small, refer to Figure 2 , Figure 3 and Figure 7As shown, when the multiple clamping portions 201 of the clamping assembly 200 are arranged radially along the mounting base 100, and the intermediate clamping portion can move radially along the mounting base 100, the intermediate clamping portion can be slidably mounted on the mounting base 100 via the sliding portion 204. The sliding direction of the sliding portion 204 is radial to the mounting base 100, and the sliding portion 204 is offset from the outer ring clamping portion and the inner ring clamping portion along the radial direction of the mounting base 100. In this way, the sliding portion 204 will not occupy the space between the outer ring clamping portion and the inner ring clamping portion, thereby making the distance between the outer ring clamping portion and the inner ring clamping portion smaller. This is more suitable for situations where the distance between the same group of copper wire terminals 501 of the motor stator 500 is small, making it easier for the copper wire terminals 501 to extend between two adjacent clamping portions 201. Moreover, with the sliding portion 204, it is more convenient to install the second elastic reset member 102.

[0078] The embodiments of this application have been described in detail above with reference to the accompanying drawings. However, this application is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of this application.

Claims

1. A clamp for holding copper wire terminals of a motor stator, characterized in that, include: Mounting bracket for housing the motor stator; Multiple clamping assemblies are disposed on the mounting base. Each clamping assembly includes multiple clamping portions. In the same clamping assembly, at least one of the multiple clamping portions is movable relative to the other clamping portions, so that the clamping assembly switches between a clamping state that clamps the copper wire terminal and an open state that releases the copper wire terminal. A drive assembly is disposed on the mounting base and movable relative to the mounting base. The drive assembly is configured to abut against and drive at least one of the clamping portions of each clamping assembly to move synchronously when moving, so that each clamping assembly switches synchronously from the open state to the clamping state.

2. The clamp according to claim 1, characterized in that, Multiple clamping components are arranged circumferentially along the mounting base. In the same clamping component, multiple clamping parts are arranged radially along the mounting base, and at least one clamping part is capable of moving radially along the mounting base to switch the clamping component between the open state and the clamping state.

3. The clamp according to claim 2, characterized in that, The drive assembly is configured to move relative to the mounting base along the axial direction of the mounting base to drive at least one of the clamping portions of each clamping assembly to move radially along the mounting base.

4. The clamp according to claim 3, characterized in that, The drive assembly has a drive ramp that is inclined relative to the axial direction of the mounting base. The drive ramp abuts against at least one of the clamping portions of each clamping assembly. When the drive assembly moves, the drive ramp drives the abutting clamping portion to move radially along the mounting base.

5. The clamp according to claim 2, characterized in that, One of the plurality of clamping portions of the same clamping assembly is an outer ring clamping portion disposed adjacent to the outer peripheral wall of the mounting base, and the other is an inner ring clamping portion disposed adjacent to the center line of the mounting base, wherein the outer ring clamping portion is capable of radial movement along the mounting base, and / or the inner ring clamping portion is capable of radial movement along the mounting base.

6. The clamp according to claim 5, characterized in that, Both the outer ring clamping portion and the inner ring clamping portion are capable of radial movement along the mounting base, and the driving assembly includes: The first driving element is configured as a ring structure and surrounds the center line of the mounting base; Multiple second drive members are arranged circumferentially along the mounting base and correspond to multiple clamping assemblies; Wherein, when the first driving member moves, it can abut against and drive each of the inner ring clamping portions to move outward synchronously, and when each of the second driving members moves, it can abut against and drive the outer ring clamping portion of the corresponding clamping assembly to move inward synchronously; or, when the first driving member moves, it can abut against and drive each of the outer ring clamping portions to move inward synchronously, and when each of the second driving members moves, it can abut against and drive the inner ring clamping portion of the corresponding clamping assembly to move outward synchronously.

7. The clamp according to claim 6, characterized in that, The clamp further includes a locking assembly, which comprises: Multiple locking parts are rotatably connected to the mounting base. The multiple locking parts are arranged circumferentially along the mounting base and correspond to multiple second driving members. The locking parts have a locked state that locks the corresponding second driving member and an unlocked state that releases the lock. An elastic ring surrounds the centerline of the mounting base and abuts against all the locking parts; When the second driving member moves to put the clamping assembly in the clamping state, the elastic ring can push each of the locking parts to rotate to switch from the unlocked state to the locked state.

8. The clamp according to claim 6, characterized in that, A first elastic reset member is provided between the second driving member and the mounting base. The first elastic reset member is configured to drive the second driving member to reset to an initial state. When the second driving member is in the initial state, it protrudes from one end of the mounting base along the axial direction, and the protruding end of each second driving member is flush with the mounting base; and / or, The second driving member includes a pushing part, an elastic part, and an abutting part arranged sequentially along its own moving direction. The two ends of the elastic part abut against the pushing part and the abutting part, respectively, and the abutting part abuts against the outer ring clamping part or the inner ring clamping part.

9. The clamp according to claim 5, characterized in that, Each of the clamping assemblies includes at least three clamping portions, and when the outer ring clamping portion moves inward and / or the inner ring clamping portion moves outward, any two adjacent clamping portions of the clamping assembly can move closer to each other to clamp the copper wire terminal.

10. The clamp according to claim 1, characterized in that, At least one of the two adjacent clamping portions of each clamping assembly is provided with a second elastic reset member between itself and the mounting base. The second elastic reset member is used to drive the two adjacent clamping portions away from each other.

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