A protective tooling for coil shaping

Abstract

The utility model discloses a kind of protective tool for coil shaping, including circular disc body, bundling belt and pre-embedded block, through hole being cooperated with stator inner hole is set in the middle of body, the concave protection groove of body surface is set, lead hole allowing thermistor to pass is set in protection groove, thermistor is placed in protection groove, and is fixed by bundling belt;Pre-embedded block is installed in the thermistor installation position of stator inside.The utility model sets up disc-shaped protective tool in end part, and sets up protection groove in protective tool, force when coil shaping is borne by protective tool, play the protection of thermistor, avoid thermistor damage.Body is recessed mode, and cooperates first air-avoiding groove and second air-avoiding groove to hide installation bundling belt, avoid that bundling belt breakage causes protective tool accidental disengagement.Pre-embedded block is assembled by multiple components, easy to install and can be quickly connected with body.

Description

Technical Field

[0001] This utility model relates to the field of motors, and in particular to a protective fixture for coil shaping. Background Technology

[0002] Electric motors are indispensable operating devices in modern work and life, and have wide applications in actual industrial production. With current economic development, competition in the international electric motor manufacturing market is becoming increasingly fierce, and the requirements for electric motor manufacturing processes are becoming more and more stringent. To enable electric motor production to better adapt to the market environment, meet production demands, and achieve efficient electric motor production...

[0003] As the application scenarios of motors become more diverse, many motors require the pre-embedded temperature sensors. In the actual production process, the original process involved embedding the thermistor into the coil and then shaping it on a shaping machine. However, during the shaping process, the end of the stator coil is squeezed by the machine, which puts great pressure on the thermistor embedded inside the coil, causing damage to the internal chip of the thermistor, resulting in poor temperature insulation and inaccurate temperature measurement. Utility Model Content

[0004] To address the shortcomings of the existing technology, the main objective of this utility model is to overcome these deficiencies and disclose a protective fixture for coil shaping, comprising a circular disc-shaped body, a binding strap, and a pre-embedded block. The body has a through hole in the middle that mates with the inner hole of the stator, and a protective groove is recessed on the surface of the body. A lead hole for a thermistor to pass through is provided in the protective groove. The thermistor is placed in the protective groove and fixed by the binding strap. The pre-embedded block is installed at the thermistor mounting position inside the stator.

[0005] Furthermore, the inner and outer rings of the body are radially recessed with a first clearance groove, the first clearance groove is connected to the protective groove, and the strapping is placed in the first clearance groove.

[0006] Furthermore, a second clearance groove is recessed on the upper surface of the body, and the second clearance groove connects the first clearance groove and the protective groove.

[0007] Furthermore, both ends of the lead hole are chamfered.

[0008] Furthermore, the embedded block includes an embedded part, a connecting part, and an installation part, wherein the installation part is connected to the embedded part through the connecting part.

[0009] Furthermore, the embedded part is a cylindrical structure with rounded corners at both ends.

[0010] Furthermore, a through connecting hole is provided on the pre-embedded part, and the connecting part is connected to the connecting hole.

[0011] Furthermore, the mounting part is a rubber component, the mounting part has a cylindrical structure, and a plurality of fixing grooves are arranged axially on the side wall of the mounting part.

[0012] The beneficial effects achieved by this utility model are as follows:

[0013] This invention features a disc-shaped protective fixture at the end, with a protective groove inside. The fixture bears the force during coil shaping, protecting the thermistor and preventing damage. The main body is recessed, and with the first and second clearance grooves, the strapping is concealed, preventing accidental detachment of the protective fixture due to strap breakage. The embedded block is assembled from multiple components, facilitating installation and allowing for quick connection to the main body. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of a protective fixture for coil shaping according to the present invention;

[0015] Figure 2 This is a schematic diagram of the structure of the main body;

[0016] Figure 3 for Figure 2 Sectional view of AA;

[0017] Figure 4 This is a schematic diagram of the embedded block structure;

[0018] Figure 5 , Figure 6 This is a schematic diagram showing the usage state of a protective tool for coil shaping according to this utility model;

[0019] The attached figures are labeled as follows:

[0020] 1. Body, 2. Bundling strap, 3. Embedded block, 4. Thermistor, 11. Through hole, 12. Protective groove, 13. Lead hole, 14. First clearance groove, 15. Second clearance groove, 31. Embedded part, 32. Connecting part, 33. Mounting part, 331. Fixing groove. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only for explaining the present utility model and are not intended to limit the present utility model.

[0022] A protective fixture for coil shaping, such as Figures 1-6As shown, the device includes a circular disc-shaped body 1, a binding strap 2, and a pre-embedded block 3. The body 1 has a through hole 11 in the center that mates with the inner hole of the stator. A protective groove 12 is recessed on the surface of the body 1, and a lead hole 13 is provided within the protective groove 12 to allow a thermistor 4 to pass through. The thermistor 4 is placed inside the protective groove 12 and secured by the binding strap 2. The pre-embedded block 3 is installed in the thermistor mounting position within the stator. In use, the pre-embedded block 3 is pre-installed into the coil, the body 1 is placed at the end of the stator, the thermistor is passed through the lead hole 13 and placed in the protective groove 12, and the body 1 is secured to the stator coil using the binding strap 2, while simultaneously binding the thermistor 4 within the protective groove 12. The stator is then placed in a coil shaping machine. After shaping, the binding strap is removed, the pre-embedded block 3 and the body 1 are removed, and the thermistor is placed in the pre-embedded position of the pre-embedded block. This completes the coil shaping while ensuring that the thermistor remains unaffected.

[0023] In one embodiment, such as Figures 1-6 As shown, the inner and outer rings of the main body 1 are radially recessed with first clearance grooves 14, which communicate with the protective groove 12. The binding strap 2 is placed inside the first clearance groove 14. By setting the first clearance groove, the outer and inner sides of the binding strap 2 are hidden inside the first clearance groove 14 after it is fixed, so as to protect the binding strap and prevent it from being damaged during coil shaping, thus freeing the main body 1 and the thermistor from being restrained.

[0024] In one embodiment, such as Figures 1-6 As shown, a second clearance groove 15 is recessed on the upper surface of the main body 1, and the second clearance groove 15 connects the first clearance groove 14 and the protective groove 12. The second clearance groove 15 conceals the strapping 2 fixed to the upper surface of the main body 1, thus protecting the strapping 2.

[0025] In one embodiment, such as Figures 1-6 As shown, both ends of the lead hole 13 are chamfered to prevent sharp edges from damaging the wires and thermistor.

[0026] In one embodiment, such as Figures 1-6 As shown, the embedded block 3 includes an embedded part 31, a connecting part 32, and an mounting part 33. The mounting part 33 is connected to the embedded part 31 through the connecting part 32. The mounting part 33 is fixed to the body 1 and connected to the embedded part 31 through the connecting part 32 to prevent the embedded part 31 from accidentally slipping off.

[0027] In one embodiment, such as Figures 1-6 As shown, the embedded part 31 has a cylindrical structure with rounded corners at both ends. This makes the installation of the embedded part 31 smoother and provides protection for the stator coil.

[0028] In the above embodiments, such as Figures 1-6As shown, a through connecting hole is provided on the embedded part 31, and the connecting part 32 is connected to the connecting hole. The connecting part 32 can be a wire, such as a cable tie, nylon rope, or metal wire.

[0029] In one embodiment, such as Figures 1-6 As shown, the mounting part 33 is a rubber component with a cylindrical structure. Several fixing grooves 331 are axially arrayed on the side wall of the mounting part 33. The rubber component has a certain degree of deformability, and the fixing grooves 331 are used to fix it to the target component. In this embodiment, the size of the mounting part 33 is larger than the size of the lead hole 13. During installation, one end of the mounting part 33 passes through the lead hole 13, and the deformation of the mounting part 33 causes the inner wall of the lead hole 13 to engage with the fixing groove 331. Through this structure, the connection between the embedded block 3 and the body 1 is achieved. The fixing groove 331 has a V-shaped cross-section.

[0030] In this embodiment, as Figures 1-6 As shown, three thermistors need to be installed in the stator, and three protective slots 12 are provided on the body 1, with the protective slots 12 corresponding to the installation positions of the thermistors.

[0031] The above are merely preferred embodiments of the present utility model and are not intended to limit the scope of implementation of the present utility model. Any modifications or equivalent substitutions to the present utility model without departing from the spirit and scope thereof should be covered within the protection scope of the claims of the present utility model.

Claims

1. A protective fixture for coil shaping, characterized in that, The device includes a circular disc-shaped body, a strapping strap, and a pre-embedded block. The body has a through hole in the middle that matches the inner hole of the stator. The surface of the body has a recessed protective groove. The protective groove has a lead hole that allows a thermistor to pass through. The thermistor is placed in the protective groove and fixed by the strapping strap. The pre-embedded block is installed at the thermistor mounting position inside the stator.

2. The protective fixture for coil shaping according to claim 1, characterized in that, The inner and outer rings of the body are radially recessed with first clearance grooves, which are connected to the protective grooves. The strapping is placed in the first clearance grooves.

3. The protective fixture for coil shaping according to claim 1, characterized in that, The upper surface of the body is recessed with a second clearance groove, which connects the first clearance groove and the protective groove.

4. The protective fixture for coil shaping according to claim 1, characterized in that, Both ends of the lead hole are chamfered.

5. A protective fixture for coil shaping according to claim 1, characterized in that, The embedded block includes an embedded part, a connecting part, and an installation part, and the installation part is connected to the embedded part through the connecting part.

6. A protective fixture for coil shaping according to claim 5, characterized in that, The embedded part is a cylindrical structure with rounded corners at both ends.

7. A protective fixture for coil shaping according to claim 5, characterized in that, The pre-embedded part is provided with a through connecting hole, and the connecting part is connected to the connecting hole.

8. A protective fixture for coil shaping according to claim 5, characterized in that, The mounting part is a rubber component and has a cylindrical structure. Several fixing grooves are arranged axially on the side wall of the mounting part.

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