Antenna of magnetron

Abstract

The antenna comprises an upper batten, a lower batten and an inclined batten, the upper batten and the lower batten are arranged in parallel, one end of the inclined batten is integrally connected with the upper batten, the other corresponding end of the inclined batten is integrally connected with the lower batten, the lower end of the lower batten is provided with a bayonet used for being matched with the bottom of a clamping groove for clamping a blade, and the lower batten is connected with the lower batten. An annular protrusion used for making contact with the side wall of the clamping groove is formed on the lower batten, and a groove is formed in the lower batten within the range of the annular protrusion. According to the utility model, the reliability of connection between the antenna and the blade is improved.

Description

A magnetron antenna Technical Field

[0001] This utility model relates to the field of magnetrons, specifically to a magnetron antenna. Background Technology

[0002] Currently, microwave ovens are equipped with a magnetron, which in turn has an antenna. The magnetron antenna is made of copper, as seen in Chinese invention patent application publication number CN1755880A, titled "Magnetron Antenna." The lower end of the antenna has a locking slot that engages with a groove on the blade. The locking slot is then welded to the groove, as seen in Chinese invention patent application publication number CN101847556A, titled "A Magnetron." During the engagement of the locking slot and groove, if the antenna's thickness has a significant dimensional error, the width of the groove may be significantly greater than the thickness of the area where the locking slot is formed. This results in the antenna becoming loose from the blade, affecting the subsequent welding effect and the reliability of the connection between the antenna and the blade. Conversely, if the thickness of the area where the locking slot is formed is large, the locking slot may not be able to be inserted into the groove. Therefore, the existing magnetron antenna technology needs improvement. Summary of the Invention

[0003] The purpose of this invention is to overcome the shortcomings of the prior art and provide a magnetron antenna that improves the reliability of the connection between the antenna and the blade.

[0004] The objective of this utility model is achieved through the following technical solution.

[0005] The magnetron antenna disclosed in this utility model includes an upper strip, a lower strip, and a slanted strip. The upper strip and the lower strip are arranged parallel to each other. One end of the slanted strip is integrally connected to the upper strip, and the corresponding other end of the slanted strip is integrally connected to the lower strip. The lower end of the lower strip has a notch for fitting the bottom of a slot for attaching blades. The lower strip has an annular protrusion for contacting the sidewall of the slot, and a groove is formed within the area of ​​the annular protrusion.

[0006] Preferably, the bayonet has a corresponding bottom edge, and the lower end of the annular protrusion abuts against the bottom edge of the bayonet.

[0007] Preferably, the height of the lower part of the annular protrusion is set to gradually decrease from top to bottom.

[0008] Preferably, the lower part of the annular protrusion is gradually narrowed from top to bottom.

[0009] Preferably, the annular protrusion is centered with the bayonet.

[0010] Compared with the prior art, the advantages of this utility model are as follows: by setting the lower end of the lower plate strip to form a slot for fitting the bottom of the slot for attaching the blade, and forming an annular protrusion on the lower plate strip for contacting the side wall of the slot, and forming a groove in the lower plate strip within the range of the annular protrusion, it is beneficial to improve the reliability of the connection between the antenna and the blade. Attached Figure Description

[0011] Figure 1 is a front three-dimensional structural diagram of the antenna of this utility model.

[0012] Figure 2 is a three-dimensional structural diagram of the back of the antenna of this utility model.

[0013] Figure 3 is a partial structural diagram of Figure 1.

[0014] Figure 4 is a front view structural schematic diagram of the lower strip of this utility model.

[0015] Figure 5 is a schematic diagram of the installation process of the blade and the antenna of this utility model.

[0016] Figure 6 is a schematic diagram of the installation structure of the blade and the antenna of this utility model.

[0017] Figure 7 is a right-side view of the mounting structure of the blade and the antenna of this utility model corresponding to Figure 6.

[0018] Figure 8 is a partial perspective view of the stamping head used to make the annular protrusion of this utility model.

[0019] Labeling Explanation: Upper strip 1; Lower strip 2; Clamp 21; Clamp bottom 210; Clamp bottom edge 211; Annular protrusion 201; Groove 2010; Sloping foot 2011; Sloping top 2012; Inclined strip 3; Blade 99; Slot 991; Slot bottom 9910; Slot sidewall 9911; Chisel tip 98; Lower edge 981. Detailed Implementation

[0020] The present invention will now be further described with reference to the accompanying drawings.

[0021] The magnetron antenna of this utility model, as shown in Figures 1 and 2, includes an upper strip 1, a lower strip 2, and an inclined strip 3. The upper strip 1 and the lower strip 2 are arranged parallel to each other. One end of the inclined strip 3 is integrally connected to the upper strip 1, and the other end of the inclined strip 3 is integrally connected to the lower strip 2. In other words, the inclined strip 3 is inclined relative to the upper strip 1. As shown in Figures 1 to 3 and Figure 7, the lower end of the lower strip 2 has a notch 21 for fitting the bottom 9910 of the slot for attaching the blade 99. As shown in Figures 3, 5, and 6, the lower strip 2 has an annular protrusion 201 for contacting the side wall 9911 of the slot. As shown in Figure 5, the upper end of the blade 99 has a slot 991, and the slot 991 has a corresponding bottom 9910. The side walls 9911 of the slot are located on the left and right sides of the bottom 9910 of the slot. As shown in Figure 3, the bayonet 21 has a corresponding bayonet bottom 210. As shown in Figures 6 and 7, when the bayonet 21 and the slot 991 are engaged, the bayonet bottom 210 abuts against the slot bottom 9910, so that the slot sidewall 9911 abuts against the front and back of the lower strip 2 respectively. As shown in Figures 3 and 4, the lower strip 2 has a groove 2010 formed within the range of the annular protrusion 201. That is to say, the groove 2010 is located inside the annular protrusion 201. Therefore, the annular protrusion 201 can be formed incidentally when the groove 2010 is formed by stamping. That is to say, when the lower strip 2 is stamped with a stamping head, when the stamping head presses into the surface of the lower strip 2, the stamping head squeezes the material in the groove 2010 outward to form the annular protrusion 201.

[0022] The total thickness of the lower strip 2 (i.e., dimension "D" in Figure 5) is set to be greater than the width of the slot 991, and the thickness of the lower strip 2 body (i.e., dimension "X" in Figure 5) is set to be significantly less than the width of the slot 991, as shown in Figures 5 and 6. When the bottom 210 of the slot is inserted into the slot 991, the slot 991 relatively presses against the annular protrusion 201, causing the annular protrusion 201 to be plastically deformed and flattened, so that the bottom 210 of the slot finally abuts against the bottom 9910 of the slot. At this time, the annular protrusion 201 abuts well against the side wall 9911 of the slot, so that the lower strip 2 and the blade 99 are well connected, avoiding significant loosening of the lower strip 2 and the blade 99, which is conducive to the stable welding of the lower strip 2 and the blade 99, and helps to improve the reliability of the connection between the antenna and the blade. Since there are errors in the total thickness of the lower strip 2 and the width of the slot 991, these errors can be compensated for by varying the degree to which the annular protrusion 201 is flattened by the slot 991. This allows the lower strip 2 and the blade 99 to be well positioned within the aforementioned error range, and avoids situations where the bottom 210 of the bayonet cannot be inserted into the slot 991. Compared to a solid boss-like structure, the annular protrusion 201 has a hollow structure (due to the formation of the groove 2010), making it easier for the annular protrusion 201 to be crushed by the side wall 9911 of the slot. Furthermore, since the magnetron antenna is made of copper, the annular protrusion 201 is easily plastically deformed and has good ductility.

[0023] Furthermore, as shown in Figure 3, the bayonet 21 is formed with a corresponding bayonet bottom edge 211, which is the edge of the bayonet bottom 210. As shown in Figure 7, since the bayonet bottom 210 is abutted and connected to the bottom of the card slot 9910, as shown in Figure 3, the lower end of the annular protrusion 201 is abutted against the bayonet bottom edge 211, which helps the annular protrusion 201 to approach the bottom of the card slot 9910, thereby facilitating effective contact between the annular protrusion 201 and the side wall 9911 of the card slot.

[0024] Furthermore, as shown in Figures 3 and 5, the height of the lower part of the annular protrusion 201 (i.e., the dimension "H" in Figure 5) is set to gradually decrease from top to bottom. Therefore, when the bottom of the bayonet 210 is inserted into the slot 991, the lower end of the annular protrusion 201 may first contact the side wall 9911 of the slot. As the lower plate 2 descends, the pressure of the side wall 9911 on the annular protrusion 201 gradually increases, which is relatively conducive to the bottom of the bayonet 210 easily moving down to abut against the bottom of the slot 9910.

[0025] Furthermore, as shown in Figure 4, the lower part of the annular protrusion 201 is gradually narrowed from top to bottom. That is to say, the width of the lower part of the annular protrusion 201 (i.e., the dimension "W" in Figure 4) gradually decreases from top to bottom, making the lower end of the annular protrusion 201 approximately form a pointed tip. Therefore, when the bottom 210 of the bayonet is inserted into the slot 991, because the width of the lower end of the annular protrusion 201 is small, the side wall 9911 of the slot is relatively less compressed by the annular protrusion 201, which makes the compression intensity gradually increase, thereby facilitating the bottom 210 of the bayonet to easily move down to abut against the bottom 9910 of the slot.

[0026] Furthermore, as shown in Figure 4, the annular protrusion 201 is centered with the bayonet 21, that is, the annular protrusion 201 is located on the center line of the bayonet 21. Thus, as shown in Figure 7, when the bayonet 21 and the slot 991 engage with each other, the annular protrusion 201 is prevented from being offset to one side, which is beneficial to the stable connection between the lower strip 2 and the blade 99.

[0027] For example, the thickness dimension "X" of the lower slat 2 body is designed to be 0.08 mm to 0.13 mm smaller than the width of the slot 991. This means that there is a larger gap between the lower slat 2 body and the slot 991, which can prevent the lower slat 2 from being unable to be inserted into the slot 991. As shown in Figure 5, the upper part of the annular protrusion 201 is the apex 2012, and the lower end of the annular protrusion 201 is the foot 2011. That is to say, from the perspective of Figure 5, the lower part of the annular protrusion 201 is sloping. The protrusion height dimension "H" (relative to the lower slat 2 body) at the apex 2012 can be designed to be 0.18 mm to 0.3 mm. As shown in Figure 2, a corresponding annular protrusion 201 can also be formed on the back of the lower slat 2. Thus, as shown in Figure 6, when the latch 21 and the slot 991 are engaged, the left and right slot sidewalls 9911 respectively abut against the corresponding annular protrusions 201.

[0028] The combination structure of the annular protrusion 201 and the groove 2010 shown in Figure 3 can be exemplified by the stamping head shown in Figure 8. The stamping head has a chisel tip 98, which is a square pyramid shape. For example, the chisel tip 98 stamps the front side of the lower strip 2, so that the front side of the lower strip 2 forms a groove 2010 and an annular protrusion 201. The tip of the square pyramid is inserted into the lower strip 2 to the greatest depth, so the tip of the square pyramid is correspondingly processed to form a slope top 2012. The lower edge 981 of the chisel tip 98 shown in Figure 8 is relatively gentle, so the end of the lower edge 981 that is relatively far away from the tip of the square pyramid is correspondingly processed to form a slope foot 2011.

Claims

1. A magnetron antenna, comprising an upper strip (1), a lower strip (2), and a slanted strip (3), wherein the upper strip (1) and the lower strip (2) are arranged parallel to each other, one end of the slanted strip (3) is integrally connected to the upper strip (1), and the corresponding other end of the slanted strip (3) is integrally connected to the lower strip (2), characterized in that: The lower end of the lower strip (2) has a slot (21) for fitting the bottom (9910) of the slot for the snap-fit ​​blade (99), and an annular protrusion (201) for contacting the side wall (9911) of the slot is formed on the lower strip (2), and a groove (2010) is formed in the area of ​​the annular protrusion (201).

2. The antenna of the magnetron according to claim 1, characterized in that: The bayonet (21) has a corresponding bottom edge (211), and the lower end of the annular protrusion (201) is attached to the bottom edge (211).

3. The antenna of the magnetron according to claim 2, characterized in that: The height of the lower part of the annular protrusion (201) is set to gradually decrease from top to bottom.

4. The antenna of the magnetron according to claim 3, characterized in that: The lower part of the annular protrusion (201) is gradually narrowed from top to bottom.

5. The antenna of the magnetron according to claim 4, characterized in that: The annular protrusion (201) is aligned with the bayonet (21).

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