Magnetic block assembly for electromagnetic air pump

Abstract

The utility model relates to the field of air pump accessories, and discloses a magnetic block assembly for an electromagnetic air pump, which comprises a connecting rod, a magnetic block and a magnetic frame, the connecting rod and the magnetic block are fixed on the magnetic frame, and the magnetic block assembly is configured to be connected with a leather cup piston structure of the air pump through the connecting rod. The connecting rod is arranged in the air pump and reciprocates along the axis direction of the connecting rod under the action of a magnetic field generated by an electrified coil of the air pump to drive the leather cup piston structure connected with the connecting rod to act, so that the air suction / exhaust action of a corresponding air cylinder in the air pump is realized. The connecting rod penetrating through the magnetic frame is used for replacing two existing connecting rods fixed to the two ends of the magnetic frame respectively, the rigidity and strength of the magnetic frame are effectively improved, and the problems that an existing magnetic block assembly is prone to cracking, deformation and the like due to insufficient strength are reduced or eliminated; the service life of the air pump is prolonged, and the efficiency of the air pump is improved.

Description

Technical Field

[0001] The utility model relates to the field of air pump accessories, in particular to a magnetic block assembly used for an electromagnetic air pump. Background Art

[0002] An electromagnetic air pump is an air pump (or simply an air pump) that is driven by electromagnetic force. Figure 1 As shown, the moving parts of the electromagnetic mechanism of the existing air pump (hereinafter referred to as "magnetic block assembly") are usually composed of parts such as a connecting rod 1', a magnetic block 2' and a magnetic frame 3'. Among them, the magnetic frame is usually made of cast aluminum or plastic, and a magnetic block mounting position (hollow structure) is formed thereon; there are two magnetic blocks, usually rectangular permanent magnets, which are fastened to the magnetic block mounting position on the cast aluminum magnetic frame by screws, or are partially covered or fully covered and fixed to the magnetic block mounting position on the plastic magnetic frame, and the polarities of the two magnetic blocks on the same side of the magnetic frame are different; the connecting rod is set into two independent ones, usually two screws, which are coaxially fixed to the two ends of the magnetic frame, and the magnetic block assembly uses two screws to connect the corresponding leather cup piston structure in the air pump.

[0003] Start the air pump, and the magnetic block assembly reciprocates along the axis of the connecting rod under the action of the magnetic field generated by the energized coil of the air pump, driving the leather cup piston structure connected to it to move, and with the cooperation of the valve plate, the suction / exhaust action of the cylinder in the air pump is realized.

[0004] Figure 1 The magnetic block assembly of the prior art shown has the following problems in actual application: since the volume of the magnetic frame should not be made larger (otherwise it will affect the working performance of the magnetic block assembly and thus reduce the efficiency of the air pump), the length of the connecting rod (two screws) that supports the entire weight of the magnetic block assembly is also limited, resulting in poor strength around the magnetic frame, especially at the junction with the two screws. After the air pump has been running for a period of time, it is easy for the magnetic frame to crack, the magnetic block assembly to deform, resulting in obstruction of operation, or even jamming. Utility Model Content

[0005] In view of the defects and shortcomings in the above-mentioned prior art, the utility model proposes a magnetic block assembly for an electromagnetic air pump to solve the problem of how to improve the rigidity and strength of the magnetic frame, thereby solving the problem of insufficient strength of the entire magnetic block assembly.

[0006] The above-mentioned purpose of the utility model is achieved through the following technical solutions:

[0007] A magnetic block assembly for an electromagnetic air pump, comprising a connecting rod, magnetic blocks and a magnetic frame. The connecting rod and the magnetic blocks are fixed on the magnetic frame. The magnetic block assembly is configured to be connected to the leather cup piston structure of the air pump through the connecting rod, and reciprocate along the axis direction of the connecting rod under the action of the magnetic field generated by the energized coil of the air pump, driving the connected leather cup piston structure to act, so as to realize the suction / exhaust action of the corresponding cylinder in the air pump. The connecting rod is configured as a single one, passing through the entire magnetic frame and exposing at both ends outside the magnetic frame for connecting the leather cup piston structure.

[0008] Preferably, the magnetic frame is of an overall symmetric structure. The connecting rod passes through the magnetic frame along the symmetry axis of the magnetic frame. On one side of the connecting rod on the magnetic frame, two magnetic block mounting positions are symmetrically arranged, and on the other side, two magnetic block mounting positions are also symmetrically arranged, and the magnetic block mounting positions on both sides are symmetric about the axis of the connecting rod.

[0009] Preferably, one magnetic block is fixed at each magnetic block mounting position. Among them, every two magnetic blocks symmetric about the axis of the connecting rod form a group, and there are two groups in total. The magnetic blocks in the same group have the same polarity on the same side of the magnetic frame, and the two groups of magnetic blocks have different polarities on the same side of the magnetic frame.

[0010] Preferably, both ends of the connecting rod are set as stud structures.

[0011] Preferably, the connecting rod is an equal-length double-headed stud.

[0012] Preferably, the connecting rod is made of stainless steel.

[0013] Preferably, the magnetic frame is an integrally injection-molded component.

[0014] Preferably, the magnetic blocks are permanent magnets.

[0015] Compared with the prior art, the beneficial effects of the technical solution of the present utility model are as follows:

[0016] In the present utility model, an equal-length double-headed stud passing through the magnetic frame is used to replace the existing two independently arranged connecting screws as the connecting rod (on the one hand, it is used for connecting the magnetic block assembly and the leather cup piston structure, and on the other hand, it can better support the total weight of the magnetic block assembly). For this reason, the number of magnetic blocks is changed from two to two groups, with two in each group. The two groups of magnetic blocks have different polarities on the same side of the magnetic frame, which can effectively improve the rigidity and strength of the magnetic frame, reduce or eliminate the quality hidden dangers existing in the existing magnetic block assembly (such as cracking and deformation easily occurring due to insufficient strength), and help to improve the magnetic induction performance of the magnetic block assembly (the magnetic energy distribution is more uniform), extend the service life of the air pump and improve the efficiency of the air pump.

[0017] Other advantages, objects and features of the present utility model will be partially embodied by the following description, and partially will also be understood by those skilled in the art through the research and practice of the present utility model. Description of the Drawings

[0018] Figure 1 Schematic diagram of a magnetic block assembly for an electromagnetic air pump in the prior art;

[0019] Figure 2 Plan view of a magnetic block assembly for an electromagnetic air pump according to an exemplary embodiment of the present utility model;

[0020] Figure 3 is Figure 2 A-A cross-sectional view of the shown magnetic block assembly;

[0021] Figure 4 is Figure 2 B-B cross-sectional view of the shown magnetic block assembly;

[0022] Figure 5 is Figure 2 C-C cross-sectional view of the shown magnetic block assembly;

[0023] Figure 1 In which: connecting rod 1′, magnetic block 2′, magnetic frame 3′;

[0024] Figure 2 In which: connecting rod 1, magnetic block 2, magnetic frame 3. Detailed Embodiment

[0025] The drawings are only for illustrative purposes and should not be construed as a limitation of this patent;

[0026] To better illustrate this embodiment, some components in the drawings will be omitted, enlarged or reduced, and do not represent the dimensions of the actual product;

[0027] For those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted;

[0028] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "arrangement" and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be said that there is a connection inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations. The orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", "front", "rear", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or component referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model.

[0029] The technical solution of the present utility model will be further described below with reference to the drawings and embodiments.

[0030] As Figures 2 to 5 shown, the magnet block assembly for an electromagnetic air pump according to an exemplary embodiment of the present utility model includes a single connecting rod 1, four magnet blocks 2, and a magnet frame 3. The connecting rod 1 and the magnet blocks 2 are both fixed on the magnet frame 3. As is well known in the art, the magnet block assembly is configured to be connected to the leather cup piston structure of the air pump through the connecting rod, and reciprocate along the axis of the connecting rod under the action of the magnetic field generated by the energized coil of the air pump, driving the connected leather cup piston structure to act, so as to realize the suction / exhaust action of the corresponding cylinder in the air pump. This magnet block assembly uses a single connecting rod 1 to penetrate the entire magnet frame 3 and expose at both ends outside the magnet frame for connecting the leather cup piston structure. With such an arrangement, the connection contact surface between the magnet frame 3 and the connecting rod 1 is large, which is beneficial to reducing stress concentration, achieving an increase in the rigidity and strength of the magnet frame without increasing the volume of the magnet frame, and can better support the entire weight of the magnet block assembly.

[0031] As Figure 2 shown, the magnet frame 3 is a symmetric structure as a whole. The connecting rod 1 penetrates the magnet frame along the symmetry axis of the magnet frame 3. On one side of the connecting rod 1 on the magnet frame 3, two magnet mounting positions are symmetrically arranged, and on the other side, two magnet mounting positions are also symmetrically arranged, and the magnet mounting positions on both sides are symmetric about the axis of the connecting rod 1. That is to say, the four magnet mounting positions are distributed in a rectangle on the magnet frame.

[0032] Furthermore, each magnet mounting position fixes a magnet block 2, and every two magnet blocks symmetric about the axis of the connecting rod 1 are a group (equivalent to Figure 1(the corresponding part in the prior art shown), there are two groups in total. The magnetic blocks 2 in the same group have the same polarity on the same side of the magnetic rack, and the magnetic blocks 2 in the two groups have different polarities on the same side of the magnetic rack. That is to say, for the convenience of the connecting rod 1 to penetrate the magnetic rack 3, the present utility model adjusts the arrangement of the magnetic blocks 2, changing the number of magnetic blocks from two to four (two groups). This magnetic block arrangement also makes the magnetic energy distribution of the magnetic block assembly more uniform, which is beneficial to improving the magnetic induction performance. It should be noted that the number of magnetic blocks in the present utility model can also be eight (two magnetic blocks are arranged at each magnetic block installation position), but based on the actual effect and the difficulty of the manufacturing process, the number of magnetic blocks is preferably four.

[0033] It should be noted that compared with the existing magnetic block assembly of the same type of air pump, the appearance shape and size of this magnetic block assembly are similar, and the magnetic field intensity and total mass are also basically unchanged. Other non-magnetic materials can be added to the magnetic rack for a certain purpose. For example, small copper bars (granules) are added to weight the magnetic block assembly.

[0034] Both ends of the connecting rod 1 are set as stud structures, which is convenient for the stud structures at both ends to pass through the holes in the middle of the leather cup and then screw on nuts (not shown) to realize the connection between the magnetic block assembly and the leather cup piston structure. The non-threaded part in the middle of the connecting rod 1 can be a round rod or a square rod, etc., but considering the convenience of processing and manufacturing, it is preferably a round rod. Further preferably, the connecting rod 1 is an equal-length double-headed stud made of stainless steel.

[0035] In this embodiment, the material of the magnetic rack 3 is the same as that of the existing plastic magnetic rack, and it is an integrally injection-molded component. It should be noted that in order to avoid shrinkage during injection molding, on the premise of not affecting the strength of the magnetic rack, a plurality of grooves (not marked) are symmetrically formed on both sides of the wall thickness between the two groups of magnetic blocks on the magnetic rack. Please refer to Figure 4 、 Figure 5 Of course, if the material performance is good and there is no problem of injection molding shrinkage, there is no need to set a groove structure on the magnetic rack.

[0036] In this embodiment, the material of the magnetic block 2 is the same as that of the existing magnetic block (ferrite or rare earth material), and it is a rectangular permanent magnet.

[0037] In some embodiments, the shape of the magnetic block 2 can also be non-rectangular, such as a cylinder. Correspondingly, the magnetic rack 3 is formed with a magnetic block installation position adapted to its shape.

[0038] For other parts not mentioned, please refer to the prior art.

[0039] As described above, it is only the preferred specific embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model, according to the technical solution and its concept of the present utility model, making equivalent replacements or changes, should be covered within the protection scope of the present utility model.

Claims

1. A magnetic block assembly for an electromagnetic air pump, comprising a connecting rod, a magnetic block and a magnetic frame, wherein the connecting rod and the magnetic block are fixed on the magnetic frame, and the magnetic block assembly is configured to be connected to the leather cup piston structure of the air pump through the connecting rod, and reciprocate along the axial direction of the connecting rod under the action of the magnetic field generated by the energized coil of the air pump, thereby driving the leather cup piston structure connected thereto to move, thereby realizing the suction / exhaust action of the corresponding cylinder in the air pump, characterized in that: The connecting rod is configured as a single one, which runs through the entire magnetic frame and has two ends exposed outside the magnetic frame so as to connect the leather cup piston structure.

2. The magnetic block assembly for an electromagnetic air pump according to claim 1, characterized in that: The magnetic frame has a symmetrical structure as a whole, and the connecting rod passes through the magnetic frame along the symmetry axis of the magnetic frame. The magnetic frame is symmetrically provided with two magnetic block mounting positions on one side of the connecting rod and two magnetic block mounting positions on the other side, and the magnetic block mounting positions on both sides are symmetrical about the axis of the connecting rod.

3. The magnetic block assembly for an electromagnetic air pump according to claim 2, characterized in that: A magnetic block is fixed at each magnetic block installation position, wherein every two magnetic blocks symmetrical about the axis of the connecting rod form a group, and there are two groups in total. The magnetic blocks in the same group have the same polarity on the same side of the magnetic frame, and the magnetic blocks in the two groups have different polarities on the same side of the magnetic frame.

4. The magnetic block assembly for an electromagnetic air pump according to claim 1, characterized in that: Both ends of the connecting rod are configured as stud structures.

5. The magnetic block assembly for an electromagnetic air pump according to claim 4, characterized in that: The connecting rod is a stud bolt of equal length.

6. The magnetic block assembly for an electromagnetic air pump according to claim 1, characterized in that: The connecting rod is made of stainless steel.

7. The magnetic block assembly for an electromagnetic air pump according to claim 1, characterized in that: The magnetic frame is an integral injection-molded component.

8. The magnetic block assembly for an electromagnetic air pump according to claim 1, characterized in that: The magnetic block is a permanent magnet.

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