Magnetic attraction dummy load

Abstract

The utility model relates to a magnetic attraction dummy load, which comprises a dummy load body, a support connected with the dummy load body and a magnetic chuck installed on the support, the magnetic chuck comprises an installation disc, and the installation disc is provided with at least one group of magnets which are arranged at intervals through N poles and S poles. The time cost for mounting and fixing the dummy load is reduced, the universality is improved, and the popularization and application of the magnetic dummy load are facilitated.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of magnetic attraction dummy loads. BACKGROUND

[0002] Dummy load is a component, part or device that replaces terminal in certain circuit (such as amplifier) or electrical output port, for receiving electric power, it can play a role in testing, adjusting and releasing, in testing, dummy load can be used to test the power of electrical appliance and the voltage across circuit, to ensure the service life of electrical appliance and the normal operation of circuit, in adjusting, dummy load can reduce power loss in circuit, realize energy-saving effect, and adjust the stability of voltage, in releasing, dummy load can release residual current in circuit when power is disconnected, protect circuit safety.

[0003] The types of dummy load include resistance load, inductive load and capacitive load, etc., suitable type can be selected according to application scenario, in high-frequency transmitting circuit, dummy load needs frequency allowance, impedance matching and can bear transmitting power, it is usually used to test the power of transmitter, instead of real load, converts radio frequency energy into heat and dissipates.

[0004] The transmission dummy load usually needs to be installed by screw fixing or setting installation slot plug-in connection mode, such as Chinese patent CN201820988748.0 discloses "thermal load dummy load device", as shown in the figure, after dummy load assembly is completed, dummy load needs to be fixed on the product to be tested by screw, but if we need to test multiple products, we either disassemble dummy load from the original test product and fix it on the new test product, or buy or produce the same number of dummy loads as the test product, this way, when testing multiple products, dummy load needs a lot of time cost for installing and fixing dummy load, lacks universality, which is not conducive to the promotion and application of dummy load. UTILITY MODEL CONTENT

[0005] The utility model solves the technical problem in the prior art, and provides a magnetic attraction dummy load.

[0006] To achieve the above object, the utility model provides the following technical scheme: a kind of magnetic attraction dummy load, including dummy load body, characterized by: the magnetic attraction dummy load includes support connected with dummy load body, magnetic suction disc installed on support, the magnetic suction disc includes mounting disc, at least one group of magnets is arranged by N pole and S pole interval on the mounting disc.

[0007] The magnetic suction disc is arranged, and when a product needs to be used in the process of using the magnetic suction dummy load, the magnetic suction disc is only needed to be attached to the surface of the product, so that the magnetic suction dummy load can be installed and fixed, the time cost of installing and fixing the dummy load is reduced, the universality is improved, and the magnetic suction dummy load is conducive to promotion and application.

[0008] When the magnetic suction disc approaches the product, the magnetic attraction of the magnet causes the magnetic suction dummy load to be adsorbed on the product. As shown in the figure, a plurality of magnets arranged at intervals between N poles and S poles are arranged on the magnetic suction disc. Since the magnet has magnetic permeability, the magnetic field lines on the object will change, forming a magnetic flux. When the magnets arranged on the magnetic suction disc are matched with the magnetism of the product, the magnetic suction disc can form a strong magnetic chain, so that the magnetic suction dummy load is firmly fixed on the product, and the adsorption force of the magnetic suction disc is improved.

[0009] The adsorption force of the magnetic suction disc mainly depends on two factors: the magnetic strength of the magnet and the interval distance between the two magnets. The higher the magnetic strength, the greater the adsorption force. The smaller the interval distance, the tighter the magnetic chain between the two magnets, and the greater the adsorption force. As shown in the figure, the interval distance between the magnets is compact, and the magnetic chain between the magnets is tight, further improving the adsorption force of the magnet.

[0010] The above-mentioned magnetic suction dummy load can be further provided with a magnet installation groove on the installation disc, and the magnet is installed in the magnet installation groove.

[0011] When the magnetic suction dummy load is adsorbed on the product, users sometimes need to adjust the adsorption position of the magnetic suction dummy load by dragging the magnetic suction dummy load. By installing the magnet in the magnet installation groove, the position of the magnet will not change due to the dragging force generated during movement when the magnetic suction dummy load is moved, improving the user experience and facilitating the promotion and application of the magnetic suction dummy load.

[0012] The above-mentioned magnetic suction dummy load can be further provided with an installation connecting column on the installation disc, an installation hole is arranged on the installation connecting column, a through hole is arranged at the upper end of the support, and the support and the magnetic suction disc are fixedly connected.

[0013] Since the magnetic suction dummy load needs to be frequently transferred for use, the magnet needs to be fixedly connected with the support. The grains in the magnet material are arranged in order, and this ordered arrangement makes the magnetic material have strong magnetism. However, under the action of external force, the grain structure is easy to be damaged, thereby causing the fragility of the material. By arranging the installation connecting column on the installation disc, the installation connecting column is a non-magnetic material, which avoids directly punching a hole on the magnet for connection, improves the stability of the fixed connection between the magnetic suction disc and the support, reduces the installation difficulty of the magnetic suction disc, reduces the use difficulty of the magnetic suction dummy load, and is conducive to the promotion and application of the magnetic suction dummy load.

[0014] The magnetic suction false load can be further provided with an elastic member wrapped around the mounting disc and the outer circumferential surface of the magnet to form the magnetic suction disc.

[0015] The magnetic suction false load can be further provided with an elastic member wrapped around the mounting disc and the outer circumferential surface of the magnet to form the magnetic suction disc.

[0016] The magnetic suction false load can be further provided with an elastic member wrapped around the mounting disc and the outer circumferential surface of the magnet to form the magnetic suction disc.

[0017] The magnetic suction false load can be further provided with an elastic member wrapped around the mounting disc and the outer circumferential surface of the magnet to form the magnetic suction disc.

[0018] The magnetic suction false load can be further provided with an elastic member wrapped around the mounting disc and the outer circumferential surface of the magnet to form the magnetic suction disc.

[0019] The magnetic suction false load can be further provided with an elastic member wrapped around the mounting disc and the outer circumferential surface of the magnet to form the magnetic suction disc.

[0020] The magnetic suction false load can be further provided with an elastic member wrapped around the mounting disc and the outer circumferential surface of the magnet to form the magnetic suction disc.

[0021] By setting the clamping plates, the support is inserted between the clamping plates, and the clamping plates generate clamping forces towards the support due to slight deformation caused by the support, thereby further improving the stability of the connection between the support and the dummy load body and facilitating the promotion and application of the magnetic dummy load.

[0022] As shown in the figure, ten sets of clamping plates are arranged on the dummy load body, and when the heat insulation member is lost, the heat insulation member with a height matching the positions of other clamping plates can be used to replace the original heat insulation member, thereby improving the versatility of the magnetic dummy load and facilitating the promotion and application of the magnetic dummy load.

[0023] The magnetic dummy load can be further provided with sawteeth on the clamping plates and sawteeth two on the lower end of the dummy load body, and the sawteeth two are arranged towards the clamping plates.

[0024] The sawteeth and the sawteeth two arranged on the clamping plates and the lower end of the dummy load body reduce the stress area when the clamping plates are clamped, thereby increasing the pressure and further improving the clamping force of the clamping plates on the support and the stability of the connection between the support and the dummy load body, and facilitating the promotion and application of the magnetic dummy load.

[0025] The utility model will be further described in detail below in combination with the drawings and embodiments. DRAWINGS

[0026] Figure 1 The figure is an assembly diagram of the magnetic dummy load.

[0027] Figure 2 The figure is a three-view diagram of the magnetic dummy load.

[0028] Figure 3 The figure is a structure diagram of the mounting disc.

[0029] Figure 4 The figure is a three-view diagram of the mounting disc.

[0030] Figure 5 The figure is an installation position diagram of the mounting disc and the magnet.

[0031] Figure 6 The figure is a diagram of the dummy load body.

[0032] Figure 7 The figure is a diagram of the dummy load body.

[0033] Figure 8 The figure is a diagram of the opening slot.

[0034] Figure 9 The figure is a diagram of the support and the heat insulation member. Detailed Implementation

[0035] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0036] like Figures 1 to 8 The magnetic dummy load shown includes a dummy load body 1, characterized in that: the magnetic dummy load includes a bracket 2 connected to the dummy load body and a magnetic chuck 3 mounted on the bracket 2, the magnetic chuck 3 includes a mounting plate 31, and the mounting plate 31 is provided with at least one set of magnets 4 arranged with N poles and S poles spaced apart.

[0037] By setting up the magnetic chuck 3, when switching products during the use of the magnetic dummy load, the magnetic dummy load can be installed and fixed simply by attaching it to the product surface. This reduces the time cost of installing and fixing the dummy load body 1 when testing multiple products, improves versatility, and is conducive to the promotion and application of the magnetic dummy load.

[0038] When the magnetic chuck 3 approaches the product, the magnetic dummy load is attracted to the product due to the attraction of the magnet 4. As shown in the figure, the magnetic chuck 3 is equipped with multiple sets of magnets 4 arranged with N and S poles spaced apart. Since the magnet 4 has magnetic permeability, the magnetic field lines on the object will change, forming a magnetic flux. When the magnet 4 on the magnetic chuck 3 matches the magnetism of the product, the magnetic chuck 3 can form a strong magnetic chain, thereby firmly fixing the magnetic dummy load to the product and improving the attraction force of the magnetic chuck 3.

[0039] The attraction force of the magnetic chuck 3 mainly depends on two factors: the magnetic strength of the magnet 4 and the spacing between the two magnets. The higher the magnetic strength, the greater the attraction force. The smaller the spacing, the tighter the magnetic chain between the two magnets 4, and the greater the attraction force. As shown in the figure, the tight spacing between the magnets 4 and the tight magnetic chain between the magnets 4 further improve the attraction force of the magnetic chuck 3.

[0040] The mounting plate 31 is provided with a magnet mounting groove 32, and the magnet 4 is installed in the magnet mounting groove 32.

[0041] When the magnetic false load is adsorbed on the product, users sometimes need to adjust the adsorption position of the magnetic false load and drag the magnetic false load. The magnet 4 is installed in the magnet installation groove. When the magnetic false load is moved, the position of the magnet 4 will not be changed due to the dragging force generated during movement, which improves the user experience and is beneficial to the promotion and application of the magnetic false load.

[0042] The mounting disc 31 is provided with a mounting connecting column 33, the mounting connecting column 33 is provided with a mounting hole 34, and the bracket 2 is provided with a through hole 21 at the upper end, so as to facilitate the fixed connection between the bracket 2 and the magnetic adsorption disc 3.

[0043] Since the magnetic false load needs to be frequently transferred and used, it needs to be frequently picked up. The magnet 4 needs to be fixedly connected with the bracket 2. The crystal grains in the magnet material are arranged in order. Such ordered arrangement makes the magnetic material have strong magnetism. However, under the action of external force, the crystal grain structure is easy to be damaged, thereby causing the fragility of the material. The mounting connecting column 33 is provided on the mounting disc 31, and the mounting connecting column 33 is a non-magnetic material. Direct hole connection is avoided on the magnet 4. The stability of the fixed connection between the magnetic adsorption disc 3 and the bracket 2 is improved. The installation difficulty of the magnetic adsorption disc 3 is reduced. The use difficulty of the magnetic false load is reduced. It is beneficial to the promotion and application of the magnetic false load.

[0044] The magnetic adsorption disc 3 comprises an elastic element 35, and the elastic element 35 is wrapped on the outer peripheral surface of the mounting disc 31 and the magnet 4, and constitutes the magnetic adsorption disc 3.

[0045] When the magnetic false load is used up or transferred, it often needs to be picked up. It is inevitable that the magnetic false load will fall due to hand slip. The magnet 4 is a magnetic material. The magnetic material usually has high hardness. The material with high hardness is easy to be broken due to vibration or impact. The elastic element 35 is arranged. The elastic element is wrapped on the outer peripheral surface of the mounting disc 31 and the magnet 4. When the hand slips accidentally, the magnetic false load will be contacted with the ground due to the gravity of the magnetic adsorption disc 3. When the magnetic adsorption disc 3 is contacted with the ground, the impact force generated by the ground to the magnetic false load will be buffered due to the elastic force of the elastic element 35. The service life of the magnetic false load is improved. It is beneficial to the promotion and application of the magnetic false load.

[0046] The lower end of the bracket 2 is provided with an opening. The bracket is provided with a plug-in end near the opening. The plug-in end is provided with a connecting hole 22. The lower end of the false load body 1 is provided with an open slot 11. The bracket 2 is fixedly connected with the false load body 1.

[0047] In the process of using the magnetic false load, it is inevitable to pick up the magnetic false load, by setting the connecting hole 22 and the open slot 11, the bracket 2 is fixedly connected with the false load body, when picking up the magnetic false load, the false load body 1 is not picked up first, then the magnet 4 and the bracket 2 are picked up, the use experience of the user is improved, and the magnetic false load is conducive to popularization and application.

[0048] The bracket 2 comprises a heat insulation piece 23, the heat insulation piece is arranged between the bracket 2 and the false load body 1, the heat insulation piece is provided with a second through hole 24, the upper end of the heat insulation piece 23 is in contact with the connecting hole 22, and the lower end is in contact with the open slot 11, so that the bracket 2 is fixedly connected with the false load body 1 through the heat insulation piece.

[0049] In the process of using the magnetic false load, the false load body 1 generates heat continuously, if the magnet 4 is continuously heated, when a certain critical value is reached, the magnet 4 will appear demagnetization phenomenon, by arranging the heat insulation piece 23 between the bracket 2 and the false load body 1, the bracket 2 is fixedly connected with the false load body 1 through the heat insulation piece 23, the heat conduction of the false load body 1 to the magnet 4 is reduced, the demagnetization phenomenon is prevented, the durability of the magnetic false load is improved, and the magnetic false load is conducive to popularization and application.

[0050] At least four groups of clamping plates 12 are arranged on the two sides of the false load body 1, the plug-in end is inserted between the clamping plates 12, and the bracket 2 is plug-in connected with the false load body 1.

[0051] By arranging the clamping plates 12, the bracket 2 is plug-in connected between the clamping plates 12, the clamping plates 12 generate clamping force towards the bracket 2 due to the slight deformation caused by the bracket 2, the stability of the connection between the bracket 2 and the false load body 1 is further improved, and the magnetic false load is conducive to popularization and application.

[0052] As shown in the figure, ten groups of clamping plates 12 are arranged on the false load body 1, when the heat insulation piece 23 is lost, the heat insulation piece 23 matched with the positions and heights of other clamping plates 12 can be used to replace the original heat insulation piece 23, the universality of the magnetic false load is improved, and the magnetic false load is conducive to popularization and application.

[0053] The clamping plate 12 is provided with a sawtooth 121, the false load body 1 is provided with a sawtooth 122, the sawtooth 122 is arranged at the lower end of the false load body 1, and the sawtooth 122 is arranged towards the clamping plate 12.

[0054] The sawtooth 121 is arranged on the clamping plate 12, when the clamping plate 12 is clamped, the stress area is reduced due to the sawtooth 121, at this time, the pressure is increased, the clamping force of the clamping plate 12 on the bracket 2 is further improved, the stability of the connection between the bracket 2 and the false load body 1 is further improved, and the magnetic false load is conducive to popularization and application.

[0055] When assembling the magnetic suction dummy load, the mounting hole 34 provided on the magnetic suction disc 3 and the through hole 21 provided on the upper end of the support 2 are fixedly connected by screws, and then the support 2 is inserted between the two groups of clamping plates 12 provided on the dummy load body 1, and then the connecting hole 22 provided on the insertion end of the support 2 and the open slot 11 provided on the lower end of the dummy load body 1 are fixedly connected by screws, and the assembly is completed.

Claims

1. A magnetic dummy load, comprising a dummy load body, characterized in that: The magnetic dummy load includes a bracket connected to the dummy load body and a magnetic chuck mounted on the bracket. The magnetic chuck includes a mounting plate, on which at least one set of magnets are arranged with N poles and S poles spaced apart.

2. The magnetic dummy load according to claim 1, characterized in that: The mounting plate is provided with a magnet mounting slot, and the magnet is installed in the magnet mounting slot.

3. The magnetic dummy load according to claim 1, characterized in that: The mounting plate is provided with mounting connecting posts, the mounting connecting posts are provided with mounting holes, and the upper end of the bracket is provided with a through hole, so as to facilitate the fixed connection between the bracket and the magnetic chuck.

4. The magnetic dummy load according to claim 1, characterized in that: The magnetic chuck includes an elastic element that wraps around the mounting plate and the outer surface of the magnet, forming a magnetic chuck.

5. A magnetic dummy load according to any one of claims 1-4, characterized in that: The lower end of the bracket is open, and the bracket is plugged in near the opening. The plugged in end is provided with a connection hole, and the lower end of the dummy load body is provided with an opening groove, so that the bracket and the dummy load body are fixedly connected.

6. A magnetic dummy load according to claim 5, characterized in that: The bracket includes a heat insulation component, which is disposed between the bracket and the dummy load body. The heat insulation component has a second through hole, with its upper end in contact with the connection hole and its lower end in contact with the opening groove, thereby enabling the bracket and the dummy load body to be fixedly connected through the heat insulation component.

7. A magnetic dummy load according to claim 5, characterized in that: The dummy load body has at least four sets of clamps on both sides, and the plug-in end is inserted between the clamps to make the bracket and the dummy load body plugged in and connected.

8. A magnetic dummy load according to claim 7, characterized in that: The clamping plate is provided with serrations, and the dummy load body is provided with a second serration. The second serration is located at the lower end of the dummy load body and is oriented towards the clamping plate.

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