Flat wire clamping tool
By designing a flat wire clamping fixture, adaptive clamping is achieved by utilizing the staggered movement of the turntable and clamping components, which solves the problem of flat wire end alignment and improves welding quality.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- XIAMEN TUNGSTEN CO LTD
- Filing Date
- 2025-06-20
- Publication Date
- 2026-07-14
AI Technical Summary
In existing technologies, when flat wire motors are twisted, it is difficult to align the ends of the flat wires, which makes it impossible to clamp them effectively before welding, thus affecting the welding quality.
A flat wire clamping fixture was designed, including a support base, a turntable and multiple clamping components. The rotation of the turntable drives the clamping components to move radially. By utilizing the misaligned movement of the hollowed-out areas of the first and second clamping components, adaptive clamping of the flat wire end is achieved, compensating for shape and position deviations.
Ensuring the flat wire ends are tightly attached improves the flatness and quality of the weld, guaranteeing the effectiveness of the hot melt welding.
Smart Images
Figure CN224503156U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the technical field of flat wire motor production equipment, and in particular to a flat wire clamping fixture. Background Technology
[0002] Flat wire motors have high power density and are mainly used in new energy vehicles. They are characterized by their small size, high slot fill factor, and good thermal conductivity. After the flat wires are inserted into the stator of a flat wire motor, the ends of the wires need to be welded to establish an electrical connection. A large number of flat wires are inserted into the stator, typically four, six, eight, or more layers. During production, the flat wires are inserted into the stator slots and then twisted as required to bring the ends of the wires in different slots closer together. Finally, adjacent ends are welded together.
[0003] When twisting flat wires, the high hardness of the material and insufficient twisting precision prevent the ends of the two flat wires from fitting together perfectly, resulting in misalignment or gaps between the ends of the flat wires. Therefore, before welding the ends of the flat wires, it is necessary to clamp the ends of the two flat wires to align them. Utility Model Content
[0004] This application provides a flat wire clamping fixture. It solves the problem in the prior art of urgently needing a fixture for effectively clamping the ends of flat wires before welding. The technical solution is as follows:
[0005] On the one hand, a flat wire clamping fixture is provided, the flat wire clamping fixture comprising:
[0006] Support base, ring-shaped turntable, and multiple clamping components;
[0007] The support base has a cavity;
[0008] The turntable is installed inside the cavity and is rotatably connected to the support base;
[0009] The plurality of clamping members are distributed circumferentially on the top of the turntable and are connected to the turntable in a driving manner. The extension direction of each clamping member is parallel to the radial direction of the turntable. The plurality of clamping members include: a plurality of first clamping members and a plurality of second clamping members arranged at intervals. Each clamping member has a plurality of clamping protrusions arranged along the extension direction of the clamping member on two opposite sides. Two adjacent clamping protrusions on one side of the first clamping member form a first hollow area, and the portion of the first clamping member distributed between two opposite first hollow areas on the two sides is elastic. Two adjacent clamping protrusions on one side of the second clamping member form a second hollow area. The first hollow areas and second hollow areas of the adjacent first clamping members and second clamping members correspond one-to-one, and each pair of corresponding first hollow areas and second hollow areas forms a clamping hollow area for clamping the end of the flat wire. The clamping hollow area communicates with the cavity.
[0010] The turntable is configured such that when it rotates, it causes the first clamping member and the second clamping member to move radially along the turntable and their moving directions are opposite, so that the first hollow area and the second hollow area move out of alignment.
[0011] Optionally, the second clamping member is a rigid member.
[0012] Optionally, the portion of the first clamping member distributed between the two opposing first hollow areas on the two sides has a hollow groove.
[0013] Optionally, the first clamping member includes: a rigid portion and an elastic transition portion connected to each other, the rigid portion having the clamping protrusion, and the transition portion being distributed between two opposing first hollow areas on two sides of the first clamping member.
[0014] Optionally, the transition portion is a structure made of rubber.
[0015] Optionally, the edge portion of the turntable has a first guide groove corresponding to the first clamping member, one end of the first clamping member has a first connecting pin located in the first guide groove, and the first connecting pin is slidably connected to the first guide groove; the edge portion of the turntable also has a second guide groove corresponding to the second clamping member, one end of the second clamping member has a second connecting pin located in the second guide groove, and the second connecting pin is slidably connected to the second guide groove;
[0016] Among them, a set of two adjacent first guide inclined slides and second guide inclined slides are symmetrically distributed.
[0017] Optionally, the support base includes a positioning disk and a top cover that are fastened together and disposed opposite to each other, wherein the turntable and the plurality of clamping members are all located between the positioning disk and the top cover.
[0018] Optionally, the top cover has a plurality of grooves on the side facing the turntable that correspond one-to-one with the plurality of clamping members, the extension direction of the grooves being parallel to the radial direction of the turntable; at least a portion of each clamping member is located in the corresponding groove and is slidably connected to the groove.
[0019] Optionally, the positioning disk has a positioning cavity that matches the shape of the turntable, and a notch communicating with the positioning cavity. The turntable is located inside the positioning cavity and is rotatably connected to the positioning disk, and a portion of the turntable is exposed through the notch.
[0020] Optionally, the top cover has multiple strip-shaped through holes, each strip-shaped through hole covering a clamping hollow area formed by two adjacent first clamping members and second clamping members.
[0021] The beneficial effects of the technical solutions provided in this application include at least the following:
[0022] When clamping the ends of flat wires using a flat wire clamping fixture, the ends of every two flat wires are inserted from the bottom of the fixture through the cavity of the support base into the clamping cutout area. Through a rotating disc and multiple clamping components that cooperate with each other, the first and second clamping components move radially along the disc as the disc rotates. This misalignment of the first and second cutout areas allows the ends of the two flat wires to come into contact and adhere. Furthermore, by providing elasticity to the portion of the first clamping component located between the two opposing first cutout areas on both sides, the elastic interaction force adaptively compensates for clamping differences caused by deviations in the shape, size, and position of the copper wires when the flat wire ends are clamped under the same driving force, ensuring that all the copper wire ends are tightly adhered to each other, thereby guaranteeing the quality of the cut and hot-melt welding. Attached Figure Description
[0023] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0024] Figure 1 This is a schematic diagram of the structure of a flat wire clamping fixture provided in an embodiment of this application;
[0025] Figure 2 yes Figure 1 An exploded view of the flat wire clamping fixture is shown.
[0026] Figure 3 This is a schematic diagram of the arrangement of clamping components provided in an embodiment of this application;
[0027] Figure 4 This is a schematic diagram illustrating the effect of the tooling clamping the end of the flat wire;
[0028] Figure 5 This is a schematic diagram of the structure of a first clamping member provided in an embodiment of this application;
[0029] Figure 6 This is a schematic diagram of another first clamping member provided in an embodiment of this application;
[0030] Figure 7 This is a front view of a partial structure of a flat wire clamping fixture provided in an embodiment of this application;
[0031] Figure 8 This is an exploded view of a portion of the structure of a flat wire clamping fixture provided in an embodiment of this application;
[0032] Figure 9 This is an exploded view of another aspect of the structure of a flat wire clamping fixture provided in an embodiment of this application.
[0033] The components include a support base 100, a turntable 200, a clamping component 300, a cavity 101, a first clamping component A1, a second clamping component A2, a first hollow area K1, a second hollow area K2, a clamping hollow area K, a first guide inclined slide 201, a first connecting pin X1, a second clamping component A2, a second connecting pin X2, a positioning plate 102, a top cover 103, a slide 103a, a positioning cavity 102a, a notch 102b, a handle component 203, and a strip-shaped through hole 103b.
[0034] The accompanying drawings illustrate specific embodiments of this application, which will be described in more detail below. These drawings and descriptions are not intended to limit the scope of the concept in any way, but rather to illustrate the concept of this application to those skilled in the art through reference to particular embodiments. Detailed Implementation
[0035] To make the objectives, technical solutions, and advantages of this application clearer, the embodiments of this application will be described in further detail below with reference to the accompanying drawings.
[0036] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.
[0037] It should be understood that the phrase "one embodiment" or "an embodiment" throughout the specification means that a specific feature, structure, or characteristic related to the embodiment is included in at least one embodiment of the present invention. Therefore, "in one embodiment" or "in an embodiment" appearing throughout the specification do not necessarily refer to the same embodiment. Furthermore, these specific features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.
[0038] Please refer to Figure 1 and Figure 2 , Figure 1 This is a schematic diagram of the structure of a flat wire clamping fixture provided in an embodiment of this application. Figure 2 yes Figure 1 The diagram shown is an exploded view of a flat wire clamping fixture. The flat wire clamping fixture may include: a support base 100, an annular turntable 200, and multiple clamping elements 300.
[0039] The support seat 100 in the flat wire clamping fixture may have a cavity 101.
[0040] The turntable 200 in the flat wire clamping fixture can be installed in the cavity 101 of the support base 100 and rotatably connected to the support base 100.
[0041] In a flat wire clamping fixture, multiple clamping elements 300 can be distributed circumferentially on top of a turntable 200 and can be driveably connected to the turntable 200. The extending direction of each clamping element 300 can be parallel to the radial direction of the turntable 200. The multiple clamping elements 300 may include: multiple first clamping elements A1 and multiple second clamping elements A2 distributed at intervals.
[0042] Please refer to Figure 3 , Figure 3This is a schematic diagram of the arrangement of clamping components provided in an embodiment of this application. Each clamping component 300 has two opposing sides, each with multiple clamping protrusions 301 arranged along the extending direction of the clamping component 300. Two adjacent clamping protrusions 301 on one side of the first clamping component A1 can form a first hollow area K1, and the portion of the first clamping component A1 distributed between two opposing first hollow areas K1 on its two sides is elastic. Two adjacent clamping protrusions 301 on one side of the second clamping component A2 can form a second hollow area K2. The first hollow areas K1 and K2 in adjacent first clamping components A1 and A2 correspond one-to-one, and each pair of corresponding first hollow areas K1 and K2 can form a clamping hollow area K for clamping the end of a flat wire. This clamping hollow area K can communicate with the cavity 101 of the support base 100. Here, the two opposite sides of each clamping member 300 can be two sides distributed circumferentially along the turntable 200, and the width of each clamping cutout area K can be slightly greater than the width of the ends of the two flat lines.
[0043] The turntable 200 can be configured such that, when rotated, it causes both the first clamping member A1 and the second clamping member A2 to move radially along the turntable 200 in opposite directions, thereby causing the first hollow area K1 and the second hollow area K2 to move out of alignment. Specifically, when the turntable 200 rotates, it causes the first clamping member A1 and the second clamping member A2 to move synchronously radially along the turntable 200, with the movement direction of the first clamping member A1 opposite to that of the second clamping member A2.
[0044] In the embodiments of this application, please refer to Figure 3 and Figure 4 , Figure 4 This is a schematic diagram illustrating the effect of the tooling clamping the ends of the flat wires. When clamping the ends of two flat wires using the flat wire clamping tooling, the ends of each pair of flat wires are inserted from the bottom of the tooling through the cavity 101 of the support base 100 into the clamping cutout area K. Through the cooperating turntable 200 and multiple clamping members 300, driving the turntable 200 to rotate causes the first clamping member A1 and the second clamping member A2 to move radially along the turntable 200. Thus, by the staggered movement of the first cutout area K1 and the second cutout area K2, contact and adhesion are achieved after the ends of the two flat wires have moved, thereby limiting the ends of the two flat wires in two degrees of freedom. In addition, by making the portion between the two opposite first hollow areas K1 distributed on the two sides of the first clamping member A1 elastic, the elastic interaction force can adaptively compensate for the clamping difference caused by the deviation of the shape, size and position of the copper wire when the flat wire ends are clamped under the same driving force, thus ensuring that all the end copper wires are tightly attached to each other, thereby ensuring the quality of cutting flat and hot melt welding.
[0045] In summary, this application provides a flat wire clamping fixture, which may include: a support base, an annular turntable, and multiple clamping members. When clamping the ends of flat wires using the flat wire clamping fixture, the ends of every two flat wires are inserted from the bottom of the fixture through the cavity of the support base into the clamping cutout area. Through the cooperating turntable and multiple clamping members, driving the turntable to rotate causes the first and second clamping members to move radially along the turntable. Thus, by the staggered movement of the first and second cutout areas to abut against the moving ends of the two flat wires, contact and adhesion are achieved, thereby limiting the ends of the two flat wires in two degrees of freedom. Furthermore, by providing elasticity in the portion of the first clamping member distributed between the two opposing first cutout areas on both sides, the elastic interaction force adaptively compensates for clamping differences caused by deviations in the shape, size, and position of the copper wires when the flat wire ends are clamped under the same driving force, ensuring that all the copper wire ends are tightly adhered together, thereby guaranteeing the quality of flat cutting and hot-melt welding.
[0046] Optionally, the second clamping member A2 can be a rigid member. For example, the second clamping member A2 can be a structure made of ordinary steel.
[0047] The portion between the two opposing first hollow areas K1 distributed on the two sides of the first clamping member A1 is elastic. This application has multiple implementation methods, and the following two optional implementation methods are illustrated as examples:
[0048] For the first optional implementation method, please refer to... Figure 5 , Figure 5 This is a schematic diagram of a first clamping member provided in an embodiment of this application. The first clamping member A1 has a slot C in the portion between two opposing first hollow areas K1 on two sides. In this case, by providing the slot C in the portion between the two opposing first hollow areas K1 on two sides of the first clamping member A1, the rigidity of the first clamping member A1 is reduced, giving the first clamping member A1 a certain degree of elasticity. Here, the first clamping member A1 can be a structure made of ordinary steel.
[0049] For the second optional implementation method, please refer to... Figure 6 , Figure 6This is a schematic diagram of another first clamping member provided in an embodiment of this application. The first clamping member A1 may include: a rigid part A11 and an elastic transition part A12 connected to each other. The rigid part A11 may have a clamping protrusion 301, and the transition part A12 may be distributed between two opposing first hollow areas K1 on two sides of the first clamping member A1. For example, the rigid part A11 and the transition part A12 in the first clamping member A1 can be formed by injection molding. Here, the rigid part A11 can be a structure made of ordinary steel.
[0050] In this application, the transition portion A12 in the first clamping member A1 can be a structure made of rubber. It should be noted that the transition portion A12 in the first clamping member A1 can be a structure made of other elastic materials.
[0051] Optional, please refer to Figure 7 , Figure 7 This is a front view of a partial structure of a flat wire clamping fixture provided in an embodiment of this application. The edge of the turntable 200 may have a first guide groove 201 corresponding to a first clamping member A1. One end of the first clamping member A1 may have a first connecting pin X1 located within the first guide groove 201, and the first connecting pin X1 can be slidably connected to the first guide groove 201. The edge of the turntable 200 may also have a second guide groove 202 corresponding to a second clamping member A2. One end of the second clamping member A2 may have a second connecting pin X2 located within the second guide groove 202, and the second connecting pin X2 can be slidably connected to the second guide groove 202. A set of two adjacent first guide grooves 201 and second guide grooves 202 are symmetrically distributed. In this case, multiple first guide grooves 201 corresponding to the first clamping member A1 and multiple second guide grooves 202 corresponding to the second clamping member A2 are provided on the edge of the turntable 200. Thus, as the turntable 200 rotates in one direction, the first clamping member A1 and the second clamping member A2 move in different directions along the radial direction of the turntable 200. Here, one end of the first guide inclined slide 201 gradually approaches the center of the turntable 200, and one end of the second guide inclined slide 202 gradually approaches the center of the turntable 200.
[0052] For example, both the first connecting pin X1 and the second connecting pin X2 can be cam followers, which are mounted on the end of the clamping member 300 by bolts and nuts.
[0053] In the embodiments of this application, please refer to Figure 8 and Figure 9 , Figure 8 This is an exploded view of a portion of the structure of a flat wire clamping fixture provided in an embodiment of this application. Figure 9 This is an exploded view of a portion of the structure of a flat wire clamping fixture provided in an embodiment of this application. The support base 100 may include a positioning disk 102 and a top cover 103 that are fastened together and disposed opposite to each other. The turntable 200 and multiple clamping members 300 can all be located between the positioning disk 102 and the top cover 103. In this case, the opposing positioning disk 102 and the top cover 103 can limit the vertical movement freedom of the turntable 200 and the multiple clamping members 300, ensuring the rotational stability of the turntable 200 and the movement stability of the multiple clamping members 300.
[0054] Optional, such as Figure 9 As shown, the top cover 103 facing the turntable 200 may have multiple grooves 103a corresponding to a plurality of clamping members 300, and the extending direction of each groove 103a may be parallel to the radial direction of the turntable 200. At least a portion of each clamping member 300 may be located within the corresponding groove 103a and may be slidably connected to the groove 103a. In this case, by providing grooves 103a on the side of the top cover 103 facing the turntable 200, the grooves 103a can guide the movement of the clamping members 300, ensuring high movement accuracy of the clamping members 300, thereby ensuring a good clamping effect of the clamping members 300 on the ends of the flat wire.
[0055] In the embodiments of this application, such as Figure 8 As shown, the positioning disk 102 may have a positioning cavity 102a that matches the shape of the turntable 200, and a notch 102b communicating with the positioning cavity 102a. The turntable 200 can be located within the positioning cavity 102a and rotatably connected to the positioning disk 102, and a portion of the turntable 200 can be exposed through the notch 102b of the positioning disk 102. In this case, by providing the positioning cavity 102a and the notch 102b communicating with the positioning cavity 102 in the positioning disk 102, the positioning cavity 102a can ensure the rotational accuracy of the turntable 200, and the notch 102b facilitates the rotational operation of the turntable 200. For example, the side of the turntable 200 may have a handle 203 extending from the notch 102b, which facilitates the driving of the turntable 200 and improves the ease of operation.
[0056] Optional, such as Figure 8 As shown, the top cover 103 may have multiple strip-shaped through holes 103b, each strip-shaped through hole 103b covering a clamping cutout area K formed by two adjacent first clamping members A1 and second clamping members A2. In this way, by providing strip-shaped through holes 103b in the top cover 103, the end of the flat wire can pass through the strip-shaped through holes 103b to facilitate subsequent cutting and welding.
[0057] In summary, this application provides a flat wire clamping fixture, which may include: a support base, an annular turntable, and multiple clamping members. When clamping the ends of flat wires using the flat wire clamping fixture, the ends of every two flat wires are inserted from the bottom of the fixture through the cavity of the support base into the clamping cutout area. Through the cooperating turntable and multiple clamping members, driving the turntable to rotate causes the first and second clamping members to move radially along the turntable. Thus, the staggered movement of the first and second cutout areas allows the ends of the two flat wires to come into contact and adhere. Furthermore, by providing elasticity to the portion of the first clamping member distributed between the two opposing first cutout areas on two sides, the elastic interaction force adaptively compensates for clamping differences caused by deviations in the shape, size, and position of the copper wires when the flat wire ends are clamped under the same driving force, ensuring that all the copper wire ends are tightly adhered together, thereby guaranteeing the quality of flat cutting and hot-melt welding.
[0058] The flat wire clamping fixture embodiments and the flat wire clamping fixture usage method embodiments provided in this utility model can be referenced together, and will not be described again here.
[0059] In this application, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. The term "multiple" refers to two or more unless otherwise expressly defined.
[0060] The above description is merely an optional embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.
Claims
1. A flat wire clamping fixture, characterized in that, include: Support base, ring-shaped turntable, and multiple clamping components; The support base has a cavity; The turntable is installed inside the cavity and is rotatably connected to the support base; The plurality of clamping members are distributed circumferentially on the top of the turntable and are connected to the turntable in a driving manner. The extension direction of each clamping member is parallel to the radial direction of the turntable. The plurality of clamping members include: a plurality of first clamping members and a plurality of second clamping members arranged at intervals. Each clamping member has a plurality of clamping protrusions arranged along the extension direction of the clamping member on two opposite sides. Two adjacent clamping protrusions on one side of the first clamping member form a first hollow area, and the portion of the first clamping member distributed between two opposite first hollow areas on the two sides is elastic. Two adjacent clamping protrusions on one side of the second clamping member form a second hollow area. The first hollow areas and second hollow areas of the adjacent first clamping members and second clamping members correspond one-to-one, and each pair of corresponding first hollow areas and second hollow areas forms a clamping hollow area for clamping the end of the flat wire. The clamping hollow area communicates with the cavity. The turntable is configured such that when it rotates, it causes the first clamping member and the second clamping member to move radially along the turntable and their moving directions are opposite, so that the first hollow area and the second hollow area move out of alignment.
2. The flat wire clamping fixture according to claim 1, characterized in that, The second clamping element is a rigid element.
3. The flat wire clamping fixture according to claim 1, characterized in that, The portion of the first clamping member distributed between the two opposite first hollow areas on the two sides has a hollow groove.
4. The flat wire clamping fixture according to claim 1, characterized in that, The first clamping member includes: a rigid part and an elastic transition part connected to each other, the rigid part having the clamping protrusion, and the transition part being distributed between two opposing first hollow areas on two sides of the first clamping member.
5. The flat wire clamping fixture according to claim 4, characterized in that, The transition section is a structure made of rubber.
6. The flat wire clamping fixture according to any one of claims 1-5, characterized in that, The edge portion of the turntable has a first guide groove corresponding to the first clamping member. One end of the first clamping member has a first connecting pin located in the first guide groove, and the first connecting pin is slidably connected to the first guide groove. The edge portion of the turntable also has a second guide groove corresponding to the second clamping member. One end of the second clamping member has a second connecting pin located in the second guide groove, and the second connecting pin is slidably connected to the second guide groove. Among them, a set of two adjacent first guide inclined slides and second guide inclined slides are symmetrically distributed.
7. The flat wire clamping fixture according to claim 6, characterized in that, The support base includes a positioning plate and a top cover that are fastened together and disposed opposite to each other, and the turntable and the plurality of clamping members are all located between the positioning plate and the top cover.
8. The flat wire clamping fixture according to claim 7, characterized in that, The top cover has a plurality of grooves on the side facing the turntable, each corresponding to one of the plurality of clamping members. The extension direction of the grooves is parallel to the radial direction of the turntable. At least a portion of each clamping member is located in the corresponding groove and is slidably connected to the groove.
9. The flat wire clamping fixture according to claim 7, characterized in that, The positioning disk has a positioning cavity that matches the shape of the turntable, and a notch that communicates with the positioning cavity. The turntable is located inside the positioning cavity and is rotatably connected to the positioning disk, and a portion of the turntable is exposed through the notch.
10. The flat wire clamping fixture according to claim 7, characterized in that, The top cover has multiple strip-shaped through holes, each of which covers a clamping hollow area formed by two adjacent first clamping members and second clamping members.