Sensor support with tongue piece clamping function

Abstract

A sensor support with a tongue piece clamping function comprises a sensor clamping part and a coil clamping part, and the coil clamping part and a coil abut against each other through a tongue piece. The coil clamping part comprises a first surface, a second surface and a third surface, the first surface, the second surface and the third surface are bent to form a U-shaped limiting ring, and tongue pieces are arranged at one end or two ends of the U-shaped limiting ring. The sensor support with the tongue piece clamping function not only can prevent falling off, but also can be applied to limiting a U-shaped motor stator and preventing the metal support and the stator from sliding.

Description

Technical Field

[0001] The utility model relates to a sensor bracket, in particular to a sensor bracket with a tongue piece for clamping. Background Art

[0002] The stator windings of rotating motors are assembled from copper wire. Current flowing through these wires creates a magnetic field, which in turn drives the rotor. However, current flowing through the copper wires generates high heat due to wire resistance, necessitating the installation of temperature sensors at the hot spots of the coil windings. The temperature sensors are mounted on the coils using a sensor bracket. The following considerations are typically considered when designing the sensor bracket: 1) ease of installation; 2) minimal component count; and 3) fast thermal response.

[0003] To secure the coil, existing temperature sensors on the market often use an elastic clamping mechanism to secure the sensor bracket to the coil. However, existing sensor brackets are limited by their material choices (typically metal, typically stamped and formed using a specific mold, resulting in a one-piece bracket. This clamping mechanism relies solely on the metal's elastic force, with no other fixings), making them difficult to adapt. Furthermore, the elastic clamping mechanism can become loose or even fall off due to prolonged exposure to high temperatures and vibrations in the motor. Summary of the Invention

[0004] The technical problem to be solved by the utility model is to provide a sensor bracket with a tongue clamp, which can not only prevent it from falling off, but also be applied not only to linear motor stators, but also to limit the stators of U-shaped motors to prevent the metal bracket and the stator from sliding.

[0005] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0006] A sensor bracket with tongue clamping comprises a sensor clamping portion and a coil clamping portion. The coil clamping portion and the coil are tightened by at least one group of tongues. The tongues comprise a connecting portion with a limiting portion extending therefrom.

[0007] The coil clamping portion includes a first surface, a second surface and a third surface. The first surface, the second surface and the third surface are bent into a U-shaped limiting ring. A tongue is arranged at one end or both ends of the U-shaped limiting ring.

[0008] The connecting portion is an arc-shaped curved plate, the middle of the connecting portion protrudes toward the inner side of the coil clamping portion, and the limiting portion is inclined to point toward the side or bottom of the coil.

[0009] The inclination angle between the limiting portion and the horizontal plane is between 15 degrees and 45 degrees.

[0010] The inclination angle between the limiting portion and the horizontal plane is 15 degrees, 30 degrees or 45 degrees.

[0011] The connecting portion is an inclined straight plate, the outer end of the connecting portion is inclined outward, and the limiting portion is inclined to point to the side or bottom of the coil.

[0012] The utility model provides a sensor bracket with a tongue clamp, which has the following technical effects: the tongue is used to press against the coil (copper bar) to achieve the effect of clamping and fixing, and the barb pattern can prevent the buckle from loosening or falling off due to long-term high temperature and vibration of the motor; and the extended buckle metal sheet can be used to limit the stator of a U-shaped motor to prevent the metal bracket and the stator from sliding.

[0013] This application is an improvement on the prior art patent CN201880071199.3 entitled "Temperature Detection Device and Assembly." The biggest difference between this application and the prior art is that the barb includes a stop to prevent the coil from sliding off. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0015] Figure 1 This is a schematic structural diagram of the utility model (first perspective).

[0016] Figure 2 This is a schematic structural diagram of the utility model (second perspective).

[0017] Figure 3 This is the main view of the utility model (the tongue is arranged on one side of the bottom).

[0018] Figure 4 This is the main view of the utility model (the tongues are arranged on both sides of the bottom).

[0019] Figure 5 This is the main view of the present invention (the tongues are arranged on both sides of the side).

[0020] Figure 6 This is a diagram of the first bending state of the tongue in the present invention.

[0021] Figure 7 This is a diagram of the second bending state of the tongue in the present invention.

[0022] Figure 8 This is a diagram of the third bending state of the tongue in the present invention.

[0023] Figure 9 This is the main view of the utility model (straight tongues are arranged on both sides of the bottom).

[0024] In the figure: sensor clamping part 1, coil clamping part 2, coil 3, tongue 4, connecting part 5, limiting part 6, first surface 2.1, second surface 2.2, third surface 2.3. DETAILED DESCRIPTION

[0025] like Figure 1-4 As shown, a sensor bracket with a tongue clamping includes a sensor clamping part 1 and a coil clamping part 2. The sensor clamping part 1 and the coil clamping part 2 are integrally formed from a metal plate, and can also be made of other materials, such as plastic. The coil clamping part 2 is used to clamp on the coil 3. In order to ensure a secure clamping, a tongue 4 is provided at the end of the coil clamping part 2. The tongue 4 is hooked against the coil 3 to achieve the purpose of being fixed to the coil 3 and positioned. After adding the tongue 4, the problem of the device loosening and falling off due to the long-term high temperature and vibration of the motor is solved, and the average thrust value between the device and the coil 3 can even reach 46.9N. The greater the thrust value, the tighter the tongue 4 is against the coil 3, and the less likely it is to loosen or fall off due to the long-term vibration of the motor.

[0026] The thrust test results are shown in Table 1.

[0027] Table 1

[0028]

[0029] The coil clamping portion 2 in the present application has various structures.

[0030] like Figure 1-3 As shown, the first type of coil clamping portion includes a first surface 2.1, a second surface 2.2, and a third surface 2.3. These surfaces are bent into a U-shaped retaining ring, within which the coil 3 is positioned. The first surface 2.1 is adjacent to the sensor clamping portion 1 and aligns with the side of the coil 3 (the first surface 2.1 is located between the temperature sensor and the motor stator). The second surface 2.2 aligns with the top of the coil 3. The third surface 2.3 is located away from the sensor clamping portion 1 and aligns with the other side of the coil 3. A tongue 4 is positioned at the outer end of the third surface 2.3.

[0031] like Figure 4 As shown, the second type of coil clamping portion is different from the first type of coil clamping portion in that tongues 4 are arranged at the outer ends of the first surface 2.1 and the third surface 2.3.

[0032] like Figure 5As shown, the third type of coil clamping portion includes a first surface 2.1, a second surface 2.2, and a third surface 2.3. These surfaces are bent into a U-shaped retaining ring, within which the coil 3 is positioned. The first surface 2.1 is positioned adjacent to the sensor clamping portion 1 and aligns with the side of the coil 3 (the first surface 2.1 is positioned between the temperature sensor and the motor stator). The second surface 2.2 aligns with the top surface of the coil 3, and the third surface 2.3 aligns with the bottom surface of the coil 3. Tongues 4 are positioned at the outer ends of both the second and third surfaces 2.2, 2.3; alternatively, the tongue 4 may be positioned at the outer end of either the second or third surface 2.2, 2.3.

[0033] That is, the tongue piece 4 in the device can be provided on one side or on both sides, and the position where the tongue piece 4 abuts can be located at the bottom edge or the side edge of the coil 3 .

[0034] Whether the tongue 4 is positioned on one side or both sides, and whether it abuts the bottom or side, depends on the customer's coil configuration. If there are interfering areas with the coil, such as bumps, the tongue 4 should be positioned from the other end instead. If space permits, a dual-side mounting system can be used for increased firmness.

[0035] Preferably, the projected area of ​​the third surface 2.3 is larger than the projected area of ​​the first surface 2.1; alternatively, the length of the third surface 2.3 is greater than that of the first surface 2.1, with the third surface 2.3 extending a certain distance to the left and right of the edge of the first surface 2.1. This device can be used to limit the stator of a U-shaped motor, preventing the metal bracket from sliding between the stator and the stator. The projected area of ​​the second surface is used to limit the stator of a U-shaped motor, and its limiting capacity can withstand a tensile force of up to 63.32N. The tensile test results are shown in Table 2. A higher tensile force indicates that the buckle is less likely to wobble and has better limiting performance.

[0036] Table 2

[0037]

[0038] When used in a U-shaped motor stator, the ends of the third surface 2.3 serve as limit points. The length of the third surface 2.3 is adjusted according to the coil design to fit the horizontal section in the middle of the U-shaped motor stator.

[0039] The tongue piece 4 in this application has two specific structures.

[0040] like Figure 1 、 Figure 6 As shown, the first tongue piece 4 includes a connecting portion 5, from which a limiting portion 6 extends. The connecting portion 5 is an arc-shaped curved plate, the middle of the connecting portion 5 protrudes toward the inside of the coil clamping portion 2, and the limiting portion 6 is inclined toward the side or bottom of the coil 3.

[0041] By protruding the middle of the connecting portion 5 toward the inner side of the coil clamping portion 2, the coil can be supported and clamped. If it is outward, the coil cannot be supported.

[0042] like Figure 9 As shown, the second tongue piece 4 includes a connecting portion 5 with a limiting portion 6 extending therefrom. The connecting portion 5 is an inclined straight plate with an outer end inclined outwards, and the limiting portion 6 is inclined toward the side or bottom of the coil 3.

[0043] The advantages of using a curved design: The curved design is more flexible and has more space, and can accept a larger tolerance of the coil (thickness).

[0044] The advantages of using a straight-line design: the straight-line design is easier to process and has a lower price.

[0045] like Figure 6-8 As shown, the first tongue 4 can be designed to be any angle according to actual needs. The figure shows a 15-degree curved tongue design, a 30-degree curved tongue design, and a 45-degree curved tongue design.

[0046] The generally designed angle is 15 to 30 degrees, which is relatively gentle and facilitates the pushing in of the coil clamping part 2 , making it easy to install the coil clamping part 2 on the coil 3 .

[0047] The closer the design angle is to 45 degrees, the more securely the bent tongue can rest against the middle area of ​​the coil bottom surface.

Claims

1. A sensor bracket with tongue clamping, comprising a sensor clamping portion (1) and a coil clamping portion (2), characterized in that: The coil clamping portion (2) and the coil (3) are tightened by at least one set of tongues (4); the tongues (4) include a connecting portion (5), and a limiting portion (6) extends from the connecting portion (5).

2. The sensor bracket with tongue clamping according to claim 1, characterized in that: The coil clamping portion (2) comprises a first surface (2.1), a second surface (2.2) and a third surface (2.3); the first surface (2.1), the second surface (2.2) and the third surface (2.3) are bent into a U-shaped limiting ring; a tongue (4) is arranged at one end or both ends of the U-shaped limiting ring.

3. The sensor bracket with tongue clamping according to claim 1, characterized in that: The connecting portion (5) is an arc-shaped curved plate, the middle of the connecting portion (5) protrudes toward the inside of the coil clamping portion (2), and the limiting portion (6) is inclined toward the side or bottom of the coil (3).

4. The sensor bracket with tongue clamping according to claim 3, characterized in that: The inclination angle of the limiting portion (6) to the horizontal plane is between 15 degrees and 45 degrees.

5. The sensor bracket with tongue clamping according to claim 4, characterized in that: The inclination angle of the limiting portion (6) to the horizontal plane is 15 degrees, 30 degrees or 45 degrees.

6. The sensor bracket with tongue clamping according to claim 1, characterized in that: The connecting portion (5) is an inclined straight plate, the outer end of the connecting portion (5) is inclined outward, and the limiting portion (6) is inclined toward the side or bottom of the coil (3).

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