Wire retainer cap and assembly
Patent Information
- Application Number
- CN202610572994.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Priority Date
- 2025-04-30
- Filing Date
- 2026-04-28
- Publication Date
- 2026-10-30
Smart Images
Figure CN123019309A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to a wire retainer cap and an assembly having a wire retainer cap. Background Technology
[0002] An electric motor, such as a brushless DC motor, includes leads, which are external wires connecting the motor to a power source. The motor also includes a stator, the stationary part of the motor, which is typically wound with magnetic wires to generate a magnetic field. This magnetic field interacts with the rotor, causing it to rotate. To provide the electricity needed to generate the magnetic field, external leads must be connected to the magnetic wires in the stator.
[0003] When connecting external leads to the magnetic conductors connecting the stator windings, a separate element is typically used, usually formed as a cap or cover. The leads are attached to this cap, and then the cap is attached to the stator.
[0004] Known caps for electric motors are complex to assemble and install onto the motor. They are time-consuming and expensive.
[0005] Therefore, it is necessary to simplify the assembly process of the electric motor, especially the cap that is installed on the motor or motor stator frame. Summary of the Invention
[0006] This requirement is met by a wire retainer cap for mounting to the stator frame of an electric motor in an installation direction, the wire retainer cap comprising an annular base spanning a base plane; a plurality of wire retainers configured to retain at least one wire and guide the at least one wire along a wiring path on the axial surface of the wire retainer of the annular base; wherein the wire retainer cap includes a contact opening extending along the base plane, configured to allow axial access to the at least one wire extending along the base plane; some of the wire retainers are located on opposite sides of the contact opening along the base plane; and wherein a straight line between the wire retainers located on opposite sides of the contact opening is parallel to the base plane and passes through the contact opening.
[0007] The above solution is advantageous because the wire retainer cap allows for simple and rapid production of the motor. The guide along the wiring path facilitates the assembly of the wire retainer cap and the installation of the wires before assembly. The straight line connecting the two wire retainers across the contact opening is parallel to the base plane, allowing the wires to be pulled taut across the contact opening to withstand termination forces, particularly along the mounting direction. Due to axial access, the above solution also enables easier termination or electrical connection in a single step, for example, by pushing the wire retainer cap towards a termination device, such as an insulated displacement contact (IDC).
[0008] The present invention can be further improved by the following embodiments, which are advantageous in themselves and can be combined with each other in any way.
[0009] The annular base can be annular, and therefore can include through-holes along the mounting direction or axial direction to facilitate a simpler assembly process with the stator frame of the motor. This through-hole contributes to lightweight design and optimized material use. Therefore, the annular base can include an inner ring diameter defining the through-hole size along the base plane, and an outer ring diameter spanning the base plane.
[0010] The axial axis of the annular base can be aligned with the mounting direction and pass through the center of the annular base. The base plane can extend in a direction perpendicular to the mounting direction, and the mounting direction can correspond to the normal to the base plane. The flat surface of the annular base, particularly the surface of the axial conductor retainer, can define the base plane.
[0011] The wiring path located on the base plane is configured to guide one or more wires along the axial wire retainer surface in at least a section. The at least one wire may be guided along the base plane to pass through the contact opening parallel to the base plane, and may abut the wire retainer surface when guided along the wiring path.
[0012] A wiring path can guide one or more conductors from the power source along the ring base to the contact opening. The wiring path can guide multiple conductors to different conductor holders and / or different contact openings, thereby effectively guiding each conductor to its designated termination location. For example, two conductors from the same power source can be guided along the wiring path in two different conductor directions. In one embodiment, multiple conductors can be guided along the wiring path in the same conductor direction at least in each segment. Along the wiring path, the conductors can pass through the contact opening.
[0013] The wiring path can be predetermined, for example by arranging wire retainers on the base plane in a predetermined manner.
[0014] The conductor retainer can protrude from the base plane in a direction opposite to the mounting direction and retain the conductor in place. The conductor retainer can extend from a flat surface of the annular base (e.g., the axial conductor retainer surface) in a direction opposite to the mounting direction. The conductor retainer is particularly advantageous for tensioning the conductor, which is beneficial for terminations, for example, using insulated displacement contacts (IDCs).
[0015] The wire retainer can have different embodiments and can be configured, for example, as a wire retainer pin. The wire retainer pin can be a cylindrical protrusion extending from the base plane in a direction opposite to the mounting direction, which can serve as a wire routing pin, routing the wire along the wire direction and rerouting it as needed to a different wire direction along the routing path. The wire retainer pin can route a wire from an initial direction to a different wire direction. The different wire direction can be, for example, perpendicular to the initial direction. The wire can therefore extend radially away from the center of the wire retainer cap. The at least one wire can, for example, be at least partially wound around the axial axis of the wire retainer pin to tension the at least one wire and / or guide the at least one wire along a different direction of the routing path.
[0016] The conductor retainer can be configured as an L-shaped conductor retainer, or equivalently as an angled, particularly right-angled, conductor retainer. The angled conductor retainer can project from the base plane in a direction opposite to the mounting direction and then bend at an angle (e.g., 90°), with the end of the conductor retainer pointing towards the center of the annular base. The recess formed by the bend can be used to clamp at least one conductor between the annular base and the angled conductor retainer.
[0017] Another embodiment of the wire retainer can be configured as a pair of wire retainer elements, each having a wire retainer tab. The wire retainer tab may be formed at the end of the wire retainer element protruding from the axial surface of the wire retainer. The at least one wire can be clamped into the pair of wire retainer elements and held by the wire retainer tab that prevents the wire from being pulled out in a direction opposite to the mounting direction.
[0018] A wire retainer may include at least one cavity. The cavity may be formed as a form-fitting cavity configured to receive at least one wire. The at least one wire may be adjacent to the wire retainer within the cavity. The cavity may be formed as a semi-circular housing and have a diameter that is the same as or slightly larger than the diameter of the corresponding wire. A wire retainer may include two cavities arranged side-by-side to receive two parallel wires along a wiring path.
[0019] In one embodiment, at least one wire retainer may be separable, formed as a separate component from the annular base, and configured to clamp onto the annular base. In this case, the wire retainer may include a fastening device. The fastening device may be, for example, a retainer tab or latch, which may engage with a complementary retaining hole located on the annular base along the plane of the base. The annular base may include a retaining hole to receive the at least one wire retainer. The separable wire retainer allows for easy replacement and facilitates maintenance of the wire retainer cap. Different wire retainer embodiments allow for easier wiring along a wiring path, securing wires, and enabling more flexible methods for adding wires / multiple wires. Other embodiments of the wire retainer may be manufactured integrally, forming a single component with the annular base.
[0020] A conductor retainer pushes at least one conductor toward the surface of the axial conductor retainer along the installation direction, thereby bringing the at least one conductor abutting the surface of the axial conductor retainer and holding the conductor in place. The conductor retainer can limit unwanted movement of the conductor and prevent the conductor from deviating from the wiring path or becoming loose from the surface of the conductor retainer.
[0021] The wire retainer cap may include at least one of the wire retainer embodiments described above. Therefore, fewer different components are needed to achieve the purpose of retaining at least one wire. The wire retainer cap may include a combination of all the wire retainer embodiments described above on the axial wire retainer surface to accommodate different assembly requirements and different wire sizes.
[0022] The wire retainers can be arranged circumferentially along the annular base, particularly along the wiring path. The wire retainers can be spaced apart relative to each other circumferentially. In one embodiment, the wire retainers can be arranged at equal intervals along the circumference of the annular base. The spacing between the wire retainers can vary depending on requirements and the motor or stator frame used.
[0023] The conductor retainer can be configured to retain at least one conductor with tension sufficient to allow the IDC or end contact to cut through the insulation of that at least one conductor.
[0024] At least one wire can span the width of the contact opening. Alternatively, the at least one wire can also span the length of the contact opening, which can extend parallel to the base plane and perpendicular to the width. Wires / multiple wires can span the contact opening in any direction along the base plane, as long as the end contact point can pass through the contact opening to access the spanned wire / multiple wires. A wire retainer can hold the wire / multiple wires in place and can tension the at least one wire to achieve easier termination of the at least one wire. The wire retainer can withstand termination forces applied to the wire, such as along the mounting direction.
[0025] The straight line connecting at least two wire retainers across the contact opening can be a virtual line. This line can extend along the wiring path and through the contact opening, allowing for optimal preparation of the wires to be mounted onto the wire retainer caps, thus enabling tensioning of the wires spanned along the straight line between the at least two wire retainers. The line can pass through the opening in a direction perpendicular to the mounting direction and connect the two wire retainers radially. The radial direction can extend perpendicular to the mounting direction and point from the center of the annular base to the outer diameter of the annular base. This line also facilitates axial access to at least one wire.
[0026] In this document, axial access to at least one conductor extending along the base plane means that the at least one conductor can be accessed from a direction perpendicular to the base plane, along and / or parallel to the installation direction.
[0027] To enable axial access, the contact opening can be arranged on the base plane and extend across the base plane. Axial access can be achieved by a termination device (e.g., an end contact point or IDC) that can be configured to pass through the contact opening and thus across the base plane in the mounting direction.
[0028] The contact opening can have any shape and can be formed, for example, as an elongated hole extending along the circumference of the annular base. In one embodiment, the length of the contact opening can be greater than its width, and vice versa.
[0029] The contact opening can be arranged between at least two wire retainers arranged on a base plane (e.g., the surface of an axial wire retainer). In this way, a wire can be held between at least two wire retainers to extend across the contact opening along the base plane and along a straight line connecting the at least two wire retainers.
[0030] The contact opening, particularly its length or longitudinal side, can extend along the circumference of the annular base. The width of the contact opening can extend in a radial direction perpendicular to the mounting direction.
[0031] In one embodiment, the contact opening can be arranged on an annular base, for example on the surface of the axial wire retainer, and thus can save space and maintain a smooth and / or cylindrical outer contour, if desired.
[0032] The contact opening can be surrounded by a frame that protrudes radially from the annular base. The frame can protrude from the outer diameter of the annular base, away from its center. One embodiment of the frame can be U-shaped or semi-circular, with the closed end of the "U" or semi-circular shape away from the center of the annular base. The free end of the "U" or semi-circular shape can be integrally integrated with the outer diameter or outer surface of the annular base. Therefore, the frame and annular base can be integrally formed to achieve fewer parts during assembly.
[0033] At least one conductor retainer may be arranged on the frame. This facilitates the guiding and tensioning of the conductor across the contact opening surrounded by the frame.
[0034] The frame may also include a break line. The frame may be configured to separate from the annular base along the break line. The break line or cut line may be configured as a weakened mechanical part of the annular base, for example, by having a material thickness that is thinner than the rest of the wire retainer cap, to simplify the separation of the frame from the annular base.
[0035] Other embodiments of the wire retainer cap may include a frame formed separately from the annular base and which can be mounted onto the annular base to allow for greater flexibility in the final product. The frame may be configured as a separate component with mounting hardware, allowing the frame to be mounted onto the annular base and removed as needed.
[0036] A wire retainer cap may include at least one wire. The wire may be guided along a wiring path. For example, a lead connected to a power source or connector may be arranged on the wire retainer cap and configured to connect to a magnetic wire of the stator frame of the motor on which the wire retainer cap is mounted.
[0037] At least one conductor can be accessed through a contact opening for termination by a terminal contact or IDC. In one embodiment, multiple conductors parallel to each other in a radial direction can be arranged side by side and accessed through a contact opening for use by multiple terminal contacts located below the conductors.
[0038] Below the wire can be understood as the end contact point further along the installation direction. Further along the installation direction defines the lower assembly section of the component. According to this definition, the stator frame can be arranged below the conductor retainer cap. The axial conductor retainer surface can be defined as the upper surface of the annular base. The surface opposite this conductor retainer surface can be defined as the motor surface or lower surface. The motor surface can face the stator frame of the motor.
[0039] The wire retainer cap may include a termination access structure comprising a contact opening and a frame. The termination access structure provides access to the end contact point by allowing the wire to pass through the contact opening for access along the mounting direction.
[0040] Termination access structures may include multiple conductors. A frame may hold one or more conductors. One embodiment of the frame may include two conductors that are radially parallel to each other and cross corresponding contact openings.
[0041] The termination access structure may include at least one strain protection for at least one conductor. This strain protection may be configured as a ramp that guides the conductor from a conductor retainer to the contact opening. In this way, the conductor can rest on the ramp after termination, preventing strain on the conductor after termination.
[0042] The wire retainer cap may include multiple termination access structures arranged circumferentially along the annular base. For example, the wire retainer cap may include three termination access structures, each including a frame extending radially outward from the center of the wire retainer cap.
[0043] The termination access structures can be evenly distributed along the diameter of the annular base and can be spaced apart from each other at the same distance. For example, other embodiments can have arbitrary distances between the termination access structures to better accommodate the dimensions of the stator frame.
[0044] The wire retainer cap may include at least one fastening element configured to engage with a complementary fastening element of the motor. This feature facilitates easy assembly, particularly when the fastening element can be clamped onto the complementary fastening element by pushing the wire retainer cap in the installation direction.
[0045] The fastening element can be integral with the annular base. It can extend in a radial direction parallel to the plane of the base. The fastening element can engage with a complementary fastening element of the stator frame of the motor, and can include, for example, a fastening groove into which a complementary fastening element of the stator frame (e.g., a fastening tab) can be inserted to engage with the fastening element.
[0046] The wire retainer cap may also include an edge extending along the installation direction. This has the advantage of holding the wire or loose parts within the dimensions of the annular base, making assembly easier.
[0047] At at least one location of the frame and / or power connector along the outer diameter or outside of the annular base, the edge may be removed circumferentially or below the remainder of the annular base. Removing the edge at these locations allows the wires to extend radially without subjecting them to strain or risking them being cut or broken at the thin and potentially sharp edge.
[0048] This requirement is also met by an assembly with a retainer cap as described above, which includes a stator frame with the wire retainer cap mounted along the mounting direction.
[0049] The stator frame can be annular, similar to an annular base. The size of the conductor retainer cap can be adjusted to fit the size of the stator frame. The stator frame can have a diameter, for example, approximately equal to or larger than the diameter of the conductor retainer cap.
[0050] The stator frame can be aligned with the same axial axis along the installation direction.
[0051] The stator frame may include protrusions or stator teeth for motor windings, which extend radially inward toward the axial axis or center.
[0052] Before assembly, the stator frame may already have windings wound on the stator teeth. The stator frame may include multiple stator teeth with multiple windings.
[0053] The stator frame may also include end contacts. The end contacts may be configured to terminate at least one conductor guided along the wiring path of the conductor retainer cap. The end contacts may be configured to pass through a contact opening in the conductor retainer cap along the mounting direction. The end contacts may be IDCs (Integrated Conductor Centers).
[0054] The end contact point or IDC can extend through the contact opening in a direction perpendicular to the base plane to access the at least one wire.
[0055] The end contact may have a blade that cuts through the insulation of the wire crossing the contact opening along the base plane. The end contact may also include a blade configured to cut through the wires (e.g., magnetic wires) on the stator frame. Thus, the end contact can establish an electrical connection between the wires on the wire holder cap and the wires on the stator frame.
[0056] The end contact may also include a lead end. The lead end may protrude toward the wire retainer cap in a direction opposite to the mounting direction. The lead end may also be configured as an IDC to cut through the insulation of a wire on the surface of the axial wire retainer, which may be a lead for powering a motor.
[0057] The end contacts can be arranged in contact housings within the stator frame. The contact housings can be arranged circumferentially around the stator frame, particularly in the circumferential direction. The contact housings can protrude toward the conductor retainer cap in a direction opposite to the mounting direction. In one embodiment, the contact housings can be arranged along the outer diameter of the stator frame.
[0058] The stator frame may also include a frame height, and the contact housing may include a height greater than the frame height along the mounting direction.
[0059] In the pre-terminated state of the assembly, the wire retainer cap can be fastened to a motor, such as the stator frame of the motor. At least one wire accessible through the contact opening of the wire retainer cap can be directly positioned at the end contact point. The fastening element of the wire retainer cap can engage with a complementary fastening element of the stator frame. The complementary fastening element may include a fastening lip that can engage with the fastening element of the wire retainer cap, which may be configured, for example, as a fastening groove.
[0060] The stator frame can be arranged coaxially with the conductor retainer cap. The conductor retainer cap can be positioned and rotated about a common axial axis such that the end contact point is located directly below or beneath at least one conductor of the conductor retainer cap relative to the mounting direction.
[0061] In another embodiment, the component can be inserted into the termination machine in a pre-terminated state. The termination access structure, including the wires, can then be pushed toward the stator frame in the mounting direction. Alternatively, it is conceivable that the stator frame can be pushed toward the wire retainer cap in the opposite direction to the mounting direction, so that the IDC or end contact cuts through the insulation of at least one wire on the wire retainer cap. Termination can be completed in one step by applying a uniform force to the entire annular base in the mounting direction. Termination can be performed individually and separately for each termination access structure and / or each individual wire and end contact pair.
[0062] In the final terminated state, at least one conductor can be terminated by the end contact point, establishing an electrical connection to the stator frame of the motor. The conductor retainer cap can be positioned closer to the stator frame and abut against it along the mounting direction, such as at the edge of the stator frame. The end contact point can extend through the contact opening in the terminated state. After at least one conductor has been terminated, the user can cut the conductor and / or detach the frame from the annular base to achieve a compact design for the entire assembly.
[0063] The component may include multiple end contacts passing through at least one contact opening in the wire retainer cap.
[0064] The components and / or stator frame may include a plurality of contact receptacles along the circumference of the stator frame, and thus include a plurality of end contact points within the contact receptacles. Attached Figure Description
[0065] The present invention will be described in more detail below with reference to the accompanying drawings by way of example. The combination of features shown in the illustrative embodiments may be supplemented with further features based on the foregoing statements to meet the desired characteristics of the invention for a particular application. According to the foregoing statements, individual features may also be omitted from the embodiments if the effect of these features is irrelevant to a particular application. The same reference numerals in the drawings are always used for elements having the same function and / or the same structure.
[0066] Figure 1 illustrates an embodiment of a wire retainer cap;
[0067] Figure 2 shows a portion of an embodiment of a wire retainer cap with an opening;
[0068] Figure 3 shows an embodiment of a wire retainer cap with wires installed;
[0069] Figure 4 illustrates an embodiment of a wire retainer cap with a detachable wire retainer;
[0070] Figure 5 illustrates an embodiment of a wire retainer cap with a detachable wire retainer;
[0071] Figure 6 illustrates an embodiment of the components in a pre-assembled state;
[0072] Figure 7 illustrates an embodiment of the component in a locked state; and
[0073] Figure 8 shows an embodiment of the component in the terminated state. Detailed Implementation
[0074] Figure 1 illustrates one embodiment of a wire retainer cap 100. The wire retainer cap 100 includes an annular base 102. The annular base 102 may be annular. A flat surface 104 of the annular base 102 may span a base plane 106, which is perpendicular to the mounting direction 108.
[0075] The annular base 102 may include an axial conductor retainer surface 110 on which one or more conductors may be arranged along a wiring path 112. The axial conductor retainer surface 110 may coincide with a flat surface 104 of the annular base 102. The wiring path 112 may be predetermined, and conductors following the wiring path 112 may be held and / or guided by a plurality of conductor retainers 114. The plurality of conductor retainers 114 may protrude from the axial conductor retainer surface 110 of the annular base 102 in a direction opposite to the mounting direction 108. The plurality of conductor retainers 114 may be configured to hold and / or wire / multiple conductors on the axial conductor retainer surface 110 of the annular base 102.
[0076] One of the plurality of wire retainers 114, wire retainer 116, can have different wire retainer embodiments. For example, the wire retainer can be formed as a wire retainer pin 118. The wire retainer pin 118 can be used to wind one or more wires around the pin to guide the wire / multiple wires in different wire directions 120 along the base plane 106, or to rewire the wire / multiple wires extending along the initial wire direction 122 to different wire directions 120.
[0077] The conductor retainer 116 can be configured as an L-shaped conductor retainer 124, which holds the conductor / multiple conductors on the wiring path 112 and prevents the conductors from deviating from the wiring path 112. The L-shaped conductor retainer 124 can be used to secure the conductors on the predetermined wiring path 112.
[0078] The wire retainer 116 can be configured as a pair of wire retainer elements 126, each having a wire retainer tab 128. The wire retainer tab 128 can be configured to retain at least one wire. The wire can be clamped into the pair of wire retainer elements 126 in a direction 130 parallel to the mounting direction 108, moving the wire in the direction 130 toward the axial wire retainer surface 110.
[0079] The wire retainer 116 can be integrally formed with the annular base 102. In another embodiment, for example...Figure 4 In one embodiment, the wire retainer can be separated from the annular base 102 and is a detachable component that can be mounted onto the annular base 102.
[0080] The annular base 102 may include at least one of the wire retainer 116 embodiments described above. In another embodiment, the annular base 102 may include all of the wire retainer 116 embodiments described above.
[0081] The lead retainer cap 100 also includes a contact opening 134, an end contact point ( Figure 2 The opening can extend to access one or more conductors that cross the contact opening 134 along the base plane 106. The end contact point can be an IDC and can cut through the insulation of the conductor / multiple conductors that cross the contact opening 134 along the base plane 106 to establish an electrical connection between the conductor on the axial conductor holder surface 110 of the annular base 102 and another conductor (e.g., the magnetic conductor of an electric motor).
[0082] Contact opening 134 may be located between at least two wire holders 116 arranged along base plane 106. In this case, at least one wire may cross along the width 136 of contact opening 134. Of course, the at least one wire may also cross along the length 138 of contact opening 134, which may extend parallel to base plane 106 and perpendicular to width 136. Wires / multiple wires may be crossed to pass through contact opening 134 in any direction along base plane 106, as long as the end contact point can pass through contact opening 134 to access the crossed wires / multiple wires. Wire holders 116 can hold wires / multiple wires in place and can tension the at least one wire to achieve easier termination of the at least one wire. A straight line 139 located between wire holders 116 on opposite sides (203a, 203b) of contact opening 134 passes through contact opening 134 parallel to base plane 106. The straight line 139 can be a virtual line that connects the two wire holders 116 across the contact opening 134 along the base plane 106.
[0083] The contact opening 134 can be arranged on the annular base 102, extending along the base plane 106. In another embodiment, the contact opening 134 can be framed by a frame 140. The frame 140 can be integrally formed with the annular base 102. The frame 140 can include wire retainers 116 on both sides of the contact opening 134 (i.e., the two opposite sides of the contact opening 134) to allow wiring of at least one wire across the contact opening 134 in a direction parallel to the base plane 106.
[0084] The frame 140 and / or the annular base 102 may include strain protection 142 along the wiring path 112. The at least one conductor may abut a flat surface 104 of the annular base 102, such as the axial conductor retainer surface 110. One embodiment of the strain protection 142 may be configured as a bevel, which can be used for strain release of the conductor, particularly after termination. Of course, other means of strain protection for the conductor may also be added to the conductor retainer cap 100 and / or the conductor itself, for example, in the form of a strain release clip.
[0085] The wire retainer cap 100 may also include a fastening element 144. The fastening element 144 may also be integral with the annular base 102. It may extend in a radial direction 146 parallel to the plane of the base. The fastening element 144 may engage with a complementary fastening element of the stator frame of the motor and may include, for example, a fastening groove 148 into which a complementary fastening element of the stator frame (e.g., a fastening tab) may be inserted to engage with the fastening element 144.
[0086] Figure 2 shows a portion of one embodiment of a wire retainer cap 100. The wire retainer cap 100 may include a wire 200 following a wiring path 112. The wire 200 may be guided by a wire retainer 116.
[0087] The frame 140 may extend radially 146 along the base plane 106 away from the center 202 of the wire retainer cap 100. The frame 140 may surround the contact opening 134 in the base plane 106. At least one wire retainer 116 may be arranged on one side 203 of the contact opening 134 and may be located on the base plane 106. Side 203a may face radially 146 and be further away from the center 202 in the radial direction than the widest dimension of the annular base 102 in the radial direction 146. At least another wire retainer 116 may be arranged on the opposite side 203b of the contact opening 134, the opposite side 203b being closer to the center 202 in the radial direction 146.
[0088] A conductor retainer 116 (e.g., an L-shaped conductor retainer 124) can hold two parallel conductors 200 along wiring path 112. The conductor retainer 116 (e.g., a conductor retainer pin 118) can route a conductor 200 from an initial direction 122 to a different conductor direction 120. The different conductor direction 120 can, for example, be perpendicular to the initial direction 120. The conductor 200 can therefore extend radially 146 away from the center 202 of the conductor retainer cap 100.
[0089] One embodiment may include two parallel conductors 200 extending along a base plane 106 across a contact opening 134. The conductors 200 can be accessed by one or more end contacts 204 through the contact opening 134 along the mounting direction 108. The end contacts 204 may be configured as insulated displacement contacts (IDCs).
[0090] The conductor retainer 116 may be configured to retain at least one conductor 200 with tension sufficient to allow the IDC or end contact 204 to cut through the insulation of the at least one conductor 200. For this purpose, the conductor retainer 116 may include, for example, a conductor retainer tab 128, or be configured as an L-shaped conductor retainer 124 or a conductor retainer pin 118.
[0091] Frame 140 can be configured to be separate from the annular base 102. Frame 140 may include, for example, one or more break lines or cut lines 206. Break lines 206 may be located close to the annular base 102 and may be located outside the annular base 102, from which frame 140 extends away from the center 202 of the wire retainer cap 100. This can contribute to a more compact design of the final assembly.
[0092] After the conductor or conductor 200 is terminated at the end contact point 204, the strain protection 142 (in) Figure 2 The inclined surface ensures strain release for the correspondingly cut conductor 200. The end contact point 204 or IDC can be the stator frame of the motor or the motor on which the conductor retainer cap 100 is to be installed. Figure 6 Part of ).
[0093] The fastening element 144 may also extend radially 146 away from the center 202 of the wire retainer cap 100 and be configured to receive a complementary fastening element of the motor to be installed in the opposite direction to the mounting direction 108.
[0094] The wire 200 can be a lead wire to power the motor when connected to the magnetic wire of the motor.
[0095] Figure 3 shows an embodiment of a wire retainer cap 100 with a wire 200 guided along wiring path 114 and connected to a power connector 300. Figure 3 An embodiment of the wire retainer cap 100 shown includes multiple wires 200 and may include, for example, three frames 140, each extending radially 146 away from the center 202 of the wire retainer cap 100. Each frame 146 may hold one or more wires 200. One embodiment of the frame 146 may include two wires 200 that pass parallel to each other through corresponding contact openings 134 along the radial direction 146.
[0096] Another embodiment of the frame 140 may include a plurality of wire retainers 116 to guide more than two wires 200 across the contact opening 134, such as three parallel wires 200 extending in a radial direction 146 from the center 202 of the wire retainer cap 100.
[0097] Wiring path 114 can guide at least one conductor 200 along the circumferential direction 302 of conductor retainer cap 100. Circumferential direction 302 can be parallel to base plane 106. Conductors 200 can be located on base plane 106, with each conductor 200 adjacent to axial conductor retainer surface 110 and / or base plane 106.
[0098] The contact opening 132, and particularly the contact opening 134, can be elongated and extend circumferentially 302. Similarly, the fastening element 144, and particularly the corresponding through-hole 148, can extend circumferentially 302. The wire retainer cap 100 may also include a guide element 304 for easier assembly of the final product.
[0099] Frames 140 can be arranged equidistantly from each other along the circumferential direction 302. Fastening elements 144 can also be arranged equidistantly along the circumferential direction 302. Fastening elements 144 can be located between two frames 140 along the circumferential direction 302. Fastening elements 144 can be arranged along the circumferential direction 302 closer to the next frame 140.
[0100] The conductor retainer 116 can be arranged circumferentially 302 on the annular base 102. The conductor retainer 116 can extend from the flat surface 104 of the annular base 102 (e.g., the axial conductor retainer surface 110) in a direction opposite to the mounting direction 108. The L-shaped conductor retainer 124 can also extend toward the center 202 of the conductor retainer cap 100 to hold one or more conductors 200 in place, ensuring the correct wiring path 112.
[0101] The wire retainer 116 may extend from the outer side 306 of the annular base 102, for example, from the same outer side 306 away from the center 202, and the frame 140 and / or fastening element 144 may extend from this outer side 306 in a radial direction 146 away from the center 202.
[0102] The wire retainer cap 100 may include a termination access structure 308, which includes a contact opening 134, a frame 140 surrounding the contact opening 134, and a wire retainer 116 connected by a (virtual) straight line 139. Therefore, the termination access structure 308 allows the end contact point 204 to access the wire mounted to the termination access structure 308. One embodiment may include multiple termination access structures 308, for example... Figure 3The three termination access structures 308 shown can be arranged equidistantly from each other along the circumferential direction 302, similar to the frame 140 described above.
[0103] Figure 4 illustrates one embodiment of a wire retainer cap 100. The wire retainer cap 100 may include a wire 200 following a wiring path 112. The wire 200 may originate from a power connector 300 and may be guided on an axial wire retainer surface 110 of an annular base 102, the surface extending in a radial direction 146 away from the center 202 of the wire retainer cap 100.
[0104] exist Figure 4 In the middle, the frame 140 extends in a radial direction 146 parallel to the base plane 106. The wires 200 can be secured by wire holders 116 on both sides of the contact opening 134, with each wire 200 crossing the contact opening 134 parallel to the base plane 106.
[0105] A conductor retainer 116 that secures a conductor or wire 200 along wiring path 112 can be configured to be detachable from annular base 102. The detachable conductor retainer 116 may include a fastening device 402. The fastening device 402 may include a retainer tab 128 that can engage with a complementary retaining hole 404, which may be located on the annular base 102, particularly along the base plane 106.
[0106] The wire retainer 116 can be clamped onto the annular base 102 in the mounting direction 108. The wire retainers 116 can be arranged along the circumferential direction 302 of the annular base 102 and can be spaced apart from each other relative to the circumferential direction 302. In one embodiment, the wire retainers 116 can be equidistantly spaced along the circumferential direction 302. Other embodiments may have wire retainers 116 with different distances 406 between two wire retainers 116 along the circumferential direction to adjust the wire retainer cap 100 to accommodate different installation requirements and different motors and / or motor stator frames.
[0107] To better retain the wires 200, the wire holder 116 may include a form-fitting cavity 408 configured to receive at least one wire 200. When the wire holder 116 is mounted on the annular base 102, the at least one wire 200 may abut the wire holder 116 within the cavity 408. The cavity 408 may, for example, be formed as a semicircle and have a diameter 410 that is the same as or slightly larger than the diameter 412 of the corresponding wire 200.
[0108] The conductor retainers 116 can be arranged along the wiring path 112, so that each conductor retainer 116 can have a face 414 facing the circumferential direction 302. All conductor retainers 116, especially the separable ones, can have at least one face 414 facing the circumferential direction 302.
[0109] The conductor holder 116 may include two cavities 408 to receive two parallel conductors 200 extending in the circumferential direction 302.
[0110] The wire retainer cap 100 may also include an edge 416 extending along the mounting direction 108. The edge 416 extends from the base plane 106 in a direction opposite to the mounting direction 108. This is particularly advantageous for holding the wire 200 or loose components in place before securing the wire 200 with the wire retainer 116, and before installing the wire retainer 116. The edge 416 prevents the wire 200 from deviating excessively from the wiring path 112, thereby facilitating assembly.
[0111] At position 418 on the outer side 306 of the frame 140 and / or the power connector 300 along the annular base 102, the edge 416 may be removed circumferentially or below the rest of the annular base 102. Removing the edge 416 at those positions 418 allows the wire 200 to extend radially 146 without subjecting the wire 200 to strain or risking it being cut or broken at the thin and therefore potentially sharp edge 416.
[0112] Figure 5 shows Figure 4 An embodiment in which the detachable wire retainer 116 is secured to the wire retainer cap 100 on the annular base 102. The wire 200 can follow the wiring path 112 and be secured by a plurality of wire retainers 114. Figure 5 In this embodiment, the cavity 408 of the separable wire holder 116 receives two parallel wires 200 extending in the circumferential direction 302. The wires 200 may be adjacent to the separable wire holder 116, particularly at the location of the cavity 408.
[0113] exist Figure 5 In the middle, the wires 200 are fixed to the annular base 102 and are in a pre-assembled state 500, where they can be installed on the motor or stator frame.
[0114] The wires 200 extending in the radial direction 146 can be shortened so that they only extend to the farthest edge 502 of the corresponding frame 140.
[0115] exist Figure 5 The image shows an exemplary end contact point 204 protruding through the contact opening 134 along the mounting direction 108, indicating that the wire 200 is now in a position where it can be terminated.
[0116] The wire retainer cap 100 may include a uniform material thickness 504 throughout the entire wire retainer cap 100. An edge 416 may include a height 506. The height 506 of the edge 416 may be greater than the material thickness 504 of the wire retainer cap 100 or the annular base 102.
[0117] The conductor retainer cap 100 may include an outer diameter 508 along the base plane 106. The frame 140 and / or termination access structure 308 may protrude from the furthest point of the diameter 508 of the annular base 102, thus extending beyond the diameter 508 of the annular base 102. The fastening element 144 may also extend beyond the diameter 508 of the annular base 102, further away from the center 202 in a radial direction 146. In another embodiment, the fastening element 144 may extend in the mounting direction 108 to fasten with a complementary fastening element of the stator frame.
[0118] Figure 6 shows an assembly 600 with a wire retainer cap 100 including a wire 200 and a power connector 300. The assembly 600 also includes a stator frame 602. The stator frame 602 may also be annular and may include a diameter 604 approximately equal to the diameter 508 of the annular base 102. The wire retainer cap 100 can be adjusted to fit the dimensions of the stator frame 602 and can be mounted to the stator frame 602 in the mounting direction 108.
[0119] Figure 6 Component 600 is shown in a pre-assembled state 604. In the pre-assembled state 604, the wire retainer cap 100 is spaced apart from the stator frame 602 along the mounting direction 108. In the pre-assembled state 604, the wires 200 have been installed and guided along the wiring path 112, so that at least one wire 200 of the wire retainer cap 100 is ready to be terminated once the wire retainer cap 100 is fully installed to the stator frame 602 of the motor.
[0120] The stator frame 602 may include protrusions or stator teeth 606 for windings of an electric motor. The stator teeth 606 may extend radially 146 toward an axis 608, which extends along a mounting direction 108 through the center 202 of the annular base 102. The stator teeth 606 may protrude from an inner surface 610 of the stator frame 602. The inner surface 610 is the surface of the stator frame 602 facing the axis 608.
[0121] Prior to assembly, the motor may already have windings wound on stator teeth 606. The stator frame 602 may include multiple stator teeth 606 having multiple windings.
[0122] The stator frame 602 may also include end contact points 204. End contact points 204 may be arranged in contact housings 612 of the stator frame 602. Contact housings 612 may be arranged circumferentially 302 along a circumference 614 of the stator frame 602. Contact housings 612 may protrude toward the wire retainer cap 100 in a direction opposite to the mounting direction 108. The stator frame 602 may include a frame height 616. Contact housings 612 may protrude toward the wire retainer cap 100 in a direction opposite to the mounting direction 108 and may include a height 618 greater than the frame height 616 along the mounting direction 108.
[0123] The end contact 204 can be configured as an IDC (Integrated Device Center). The end contact 204 may include a magnetic conductor end 620 configured to terminate a magnetic conductor of a motor. The magnetic conductor can be guided through the contact housing 612. The magnetic conductor can be guided through the contact housing 612, for example, in a radial direction 146. The end contact 204 can then be mounted to the contact housing 612 in the mounting direction 108, cutting through the insulation of the magnetic conductor within the contact housing 612 to establish an electrical connection with the magnetic conductor.
[0124] The end contact 204 may also include a lead end 622. The lead end 622 may protrude toward the wire retainer cap 100 in a direction opposite to the mounting direction 108. The lead end 622 may also be configured as an IDC to cut through the insulation of the wire 200, which may be a lead for powering a motor.
[0125] Component 600 and / or stator frame 602 may include a plurality of contact receptacles 612 along a circumference 614 of stator frame 602, and thus include a plurality of end contact points 204 within the contact receptacles 612.
[0126] The stator frame 602 can be arranged coaxially with the conductor retainer cap 100. The conductor retainer cap 100 can rotate about axis 608 such that the end contact point 204 is located directly below at least one conductor 200 of the conductor retainer cap 100 along the mounting direction 108.
[0127] The stator frame 602 may also include a complementary fastening element 624 configured to engage with the fastening element 144 of the wire retainer cap 100. The complementary fastening element 624 may include a fastening lip 626 that can engage with the fastening element 144 of the wire retainer cap 100.
[0128] Figure 7 shows assembly 600 in pre-termination state 700. In pre-termination state 700, the wire retainer cap 100 is mounted to the stator frame 602 along the mounting direction 108. The fastening element 144 of the wire retainer cap 100 can engage with the complementary fastening element 624 of the stator frame 602. Through this engagement, the wire retainer cap 100 cannot be moved in the direction opposite to the mounting direction 108 without releasing the engagement between the fastening element 144 and the complementary fastening element 624.
[0129] The conductor 200 may be adjacent to the end contact point 204 of the stator frame 602. In the pre-termination state 700, the conductor 200 has not yet been cut, but is in a position that can be cut or terminated, for example, by the IDC of the end contact point 204.
[0130] In the pre-termination state 700, the wire retainer cap 100 may also be spaced apart from the stator frame 602 along the mounting direction 108. The wire retainer cap 100, or at least the termination access structure 308 and / or the frame 140, may be pushed in along the mounting direction 108 and terminated in this manner. This embodiment allows for quick and easy termination of the wire 200. The wire 200 can be manually terminated by pushing the wire retainer cap 100 toward the stator frame 602 along the mounting direction 108.
[0131] In another embodiment, component 600 can be inserted into the termination machine in a pre-termination state 700. The termination access structure 308, including the wire 200, can then be pushed toward the stator frame 602 in the mounting direction 108. Alternatively, the stator frame 602 can be pushed toward the wire retainer cap 100 in a direction opposite to the mounting direction 108 so that the IDC or end contact 204 cuts through the insulation of at least one wire 200 on the wire retainer cap 100. Termination can be completed in one step by applying a consistent force along the mounting direction 108 across the entire annular base 102. Termination can be performed separately and individually for each termination access structure 308 and / or each individual wire and end contact pair.
[0132] Figure 8 shows the assembly 600 in the termination state 800. In the termination state 800, the conductor 200 is contacted by the end contact point 204 of the stator frame 602. The insulation of the conductor 200 is penetrated, and an electrical connection is established at the end contact point 204 through the contact of the conductor 200, thereby establishing an electrical connection between the conductor 200 and, for example, a stator winding.
[0133] In the termination state 800, the conductor retainer cap 100 is arranged closer to the stator frame 602 and the mounting direction 108. The conductor retainer cap 100 may be adjacent to the stator frame 602, for example, at the edge of the stator frame 602. After the conductor 200 is terminated, the user can freely cut the conductor near the end contact point 204.
[0134] Furthermore, the termination access structure 308 can be separated from the annular base 102. For separation, the annular base 102, the termination access structure 308, and / or the frame 140 may include a break line 206, such as a perforation or other mechanical modification, to weaken the connection between the annular base 102 and the frame 140. The frame 140 and / or the termination access structure 308 can be cut off from the annular base 102 along the circumferential direction 302. This has the advantage of a more compact design for the entire assembly 600.
[0135] Figure Labels
[0136] 100 lead retainer cap
[0137] 102 Annular Base
[0138] 104 flat surface
[0139] 106 base plane
[0140] 108 Installation Direction
[0141] 110 Axial Conductor Retainer Surface
[0142] 112 wiring path
[0143] 114+ wire retainers
[0144] 116 wire retainer
[0145] 118 lead wire retainer pin
[0146] 120 different conductor directions
[0147] 122 Initial Wire Direction
[0148] 124L-shaped wire retainer
[0149] 126 wire retainer element pair
[0150] 128 retainer tabs
[0151] Position on the surface side of the 130 axial wire retainer
[0152] 132 Axial Conductor Retainer Surface Side
[0153] 134 contact opening
[0154] 136 Width of contact opening
[0155] 138 Length of contact opening
[0156] 139 straight line
[0157] 140 frame
[0158] 142 Strain Protection
[0159] 144 Fastening Components
[0160] 146 radial direction
[0161] 148 Fastening slots for fastening components
[0162] 200 wire
[0163] 202 Wire Holder Cap Center
[0164] 203a Contact opening away from the center side
[0165] 203b Contact opening near the center on the opposite side
[0166] 204 terminal contact point
[0167] 206 fracture line
[0168] 300 power connector
[0169] 302 circumferential direction
[0170] 304 Guide Element
[0171] 306 outer ring base
[0172] 308 Termination Access Structure
[0173] 402 Fastening Device
[0174] 404 retaining hole
[0175] 406 The distance between two wire holders along the circumferential direction
[0176] The 408 lead retainer has a shape that fits into the cavity.
[0177] 410 cavity diameter
[0178] 412 wire diameter
[0179] 414 Wire Holder Face
[0180] 416 edge
[0181] 418 The outer position of the conductor extending in the radial direction
[0182] 420 The outer position of the conductor that does not extend in the radial direction
[0183] 500 Pre-assembled state
[0184] The edge of the 502 frame
[0185] 504 material thickness
[0186] 506 edge height
[0187] Diameter of 508 ring base
[0188] 600 components
[0189] 602 stator frame
[0190] 604 pre-assembled state
[0191] 606 stator teeth for windings
[0192] 608 passes through the central axis
[0193] Inner surface of 610 stator frame
[0194] 612 Contact Receptacle
[0195] Circumference of 614 stator frame
[0196] 616 frame height
[0197] 618 Seat Height
[0198] Magnetic wire end of 620 contact point
[0199] 622 terminal contact point lead end
[0200] 624 Complementary Fastener
[0201] 626 Complementary Fastening Component Fastening Lip
[0202] 700 pre-terminated status
[0203] 800 Termination Status
Claims
1. A conductor retainer cap (100) for mounting to a stator frame (600) of a motor along an installation direction (108), comprising: An annular base (102) spans the base plane (106); A plurality of (114) wire retainers (116) are configured to retain at least one wire (200) and guide the at least one wire (200) along a wiring path (112) on the axial wire retainer surface (110) of the annular base (102); wherein The wire retainer cap (100) includes a contact opening (134) extending along a base plane (106) and configured to allow axial access to at least one wire (200) extending along the base plane (106); wherein Some wire retainers (116) are located on opposite sides (203a, 203b) of the contact opening (134) along the base plane (106); and in which A straight line (139) between the wire retainers (116) located on opposite sides (203a, 203b) of the contact opening (134) passes through the contact opening (134) parallel to the base plane (106).
2. The wire retainer cap (100) according to claim 1, wherein the contact opening (134) is surrounded by a frame (140) that protrudes from the annular base (102) in a radial direction (146) perpendicular to the mounting direction (108).
3. The wire retainer cap (100) according to claim 2, wherein at least one wire retainer (116) is arranged on the frame (140).
4. The wire retainer cap (100) according to any one of claims 2 to 3, wherein the frame (140) and the annular base (102) are integrally formed.
5. The wire retainer cap (100) according to any one of claims 2 to 4, wherein the frame (140) includes a break line (206) and is configured to be separable from the annular base (102) along the break line (206).
6. The conductor retainer cap (100) according to any one of claims 1 to 5, wherein the conductor retainer cap (100) includes a conductor (200) guided along the wiring path (112).
7. The wire retainer cap (100) according to any one of claims 2 to 6, wherein the wire retainer cap (100) includes an end access structure (308) comprising a contact opening (134) and a frame (140).
8. The wire retainer cap (100) according to claim 7, wherein the termination access structure (308) includes at least one strain protection (142) for at least one wire (200).
9. The wire retainer cap (100) according to any one of claims 7 to 8, wherein the wire retainer cap (100) comprises a plurality of termination access structures (308) arranged in the circumferential direction (302) of the annular base (102).
10. An assembly (600) having a conductor retainer cap (100) according to any one of claims 1 to 9, comprising a stator frame (600) on which the conductor retainer cap (100) is mounted in the mounting direction (108).
11. The component (600) of claim 10, wherein the stator frame (600) includes an end contact (204) configured to terminate at least one conductor (200) guided along the wiring path (112).
12. The component (600) according to claim 11, wherein the end contact point (204) is configured to pass through the contact opening (134) of the wire retainer cap (100) in the mounting direction (108).
13. The component (600) according to any one of claims 10 to 12, wherein in the pre-terminated state (700), the wire retainer cap (100) is fastened to the stator frame (600), and at least one wire (200) is positioned directly at the end contact point (204).
14. The component (600) according to any one of claims 10 to 13, wherein in the terminated state (800), the at least one conductor (200) is terminated by an end contact point (204) and connected to the stator frame (602), and the end contact point (204) extends through the contact opening (134).
15. The component (600) according to any one of claims 10 to 14, wherein the component (600) includes a plurality of end contacts (204) through at least one contact opening (134) of the wire retainer cap (100).