Pneumatic magnetic reset linear vibrator

Abstract

The utility model discloses a pneumatic magnetic reset linear vibrator which comprises a shell internally provided with a movable cavity, a piston capable of doing reciprocating motion in the movable cavity and an air inlet guide rod arranged in the movable cavity and penetrating through the piston, and the movable cavity is divided into an upper cavity and a lower cavity by the piston. According to the linear vibrator, air inlet is completed through the air conveying channel in the air inlet guide rod by means of the upper air inlet channel and the lower air inlet channel formed in the piston, then the function of the linear vibrator is achieved, installation of the piston is limited through the air inlet guide rod, the friction contact area between the piston and the air inlet guide rod is small, and the vibration efficiency of the piston in the shell can be improved; according to the function, on the basis, the magnetic rings are arranged on the inner wall of the shell and one end of the piston, and when the linear vibrator stops working, the piston can be pushed to move to a designated position or area according to the principle that the polarities of the two magnetic rings repel each other, so that the requirement that the linear vibrator can be normally restarted for use during horizontal installation is met.

Description

Technical Field

[0001] The utility model relates to the technical field of vibrators, in particular to a pneumatic magnetic reset linear vibrator. Background Art

[0002] The pneumatic magnetic reset linear vibrator uses the high-pressure gas discharged from the air compressor to access the product air inlet through the air pipe. When the gas pushes the piston to the left, the air chamber on the left side of the piston is squeezed, and the squeezed gas is discharged through the exhaust hole. When the gas pushes the piston to the right, the air chamber on the right side of the piston is squeezed, and the squeezed gas is discharged through the exhaust hole. In this process, when the piston moves to the left / right to the end point, the high-pressure gas reverses, causing the piston to reciprocate left and right, thereby generating linear vibration.

[0003] At present, after the reciprocating motion of the piston in the linear vibrator is completed, the piston may stagnate in the middle position of the chamber of the linear vibrator, causing the air chamber on the left and the air chamber on the right to complete the air intake and exhaust applications, and then the reciprocating motion of the piston is stagnant when the linear vibrator is started to work again, resulting in device failure.

[0004] The invention patent with the publication number CN108529034A in China discloses a "piston-type starting vibrator", which includes a shell, a base, an end cover, a piston, an air source connector, an exhaust hole, and a gas channel; one end of the shell is fixedly arranged on the base, and the other end of the shell is connected to the end cover. The inner cavity of the shell is hollow, and the piston is arranged in the inner cavity of the shell. The piston divides the inner cavity of the shell into two upper and lower cavities, and an air source connector is arranged in the middle of the shell. The upper cavity and the lower cavity are respectively provided with exhaust holes connected to the outside world. The piston is provided with two centrally symmetrical gas channels connected to the upper cavity and the lower cavity respectively, and one of the gas channels is connected to the air source connector. In the above scheme, if the piston stops in the shell, the above air source connector is not connected to any gas channel, which will cause the piston to stagnate and paralyze the overall use of the vibrator.

[0005] In the above patent, it is also found that when the piston reciprocates in the housing, the piston has a large contact area with the inner wall of the housing, which provides a large resistance when the piston moves reciprocatingly, thereby damaging the frequency of the reciprocating motion of the piston. Utility Model Content

[0006] The utility model aims to provide a pneumatic magnetic reset linear vibrator, which has good vibration efficiency and solves the risk of piston working failure caused by starting and using the pneumatic magnetic reset linear vibrator, by setting a magnetic ring to ensure the stop position of the piston when it is not in use.

[0007] In order to achieve the above purpose, the technical solutions of the utility model include:

[0008] A pneumatic magnetic reset linear vibrator, comprising:

[0009] A housing having an active cavity therein;

[0010] A piston capable of reciprocating in the active chamber, wherein the piston divides the active chamber into an upper chamber and a lower chamber, and a lower air intake passage connecting the upper chamber and the upper air intake passage and connecting the lower chamber is formed in the piston;

[0011] An air intake guide rod is arranged in the active cavity and passes through the piston, wherein an air delivery channel is arranged in the air intake guide rod, and an air inlet of the air delivery channel is alternately connected with the upper air intake channel and the lower air intake channel as the piston reciprocates in the active cavity;

[0012] Magnetic rings are arranged on the inner wall of the shell and one end of the piston. The two magnetic rings have the same polarity and are arranged opposite to each other with the upper chamber or the lower chamber as a separation space.

[0013] Compared with the prior art, the utility model discloses a pneumatic magnetic reset linear vibrator, comprising a shell having an active cavity inside, a piston capable of reciprocating in the active cavity, and an air intake guide rod arranged in the active cavity and passing through the piston, wherein the piston divides the active cavity into an upper chamber and a lower chamber, and air intake is completed through an air transmission channel in the air intake guide rod using an upper air intake channel and a lower air intake channel constructed in the piston, thereby realizing the function of the linear vibrator, and the installation of the piston is limited by the air intake guide rod, and the friction contact area between the piston and the air intake guide rod is small, which can improve the vibration efficiency of the piston in the shell; in addition, on this basis, by arranging magnetic rings on the inner wall of the shell and one end of the piston, the principle of polar repulsion of the two magnetic rings is utilized, and when the linear vibrator stops working, the piston can be pushed to move within a specified position or area, so as to meet the requirement that the linear vibrator can be restarted and used normally.

[0014] Furthermore, the two magnets include a first magnetic ring and a second magnetic ring, the first magnetic ring is arranged at the upper end of the shell, and the second magnetic ring is arranged on the piston and located at one end close to the upper end of the shell; and

[0015] The first magnetic ring and the second magnetic ring are both ring-shaped, and the air intake guide rod is arranged through the first magnetic ring and the second magnetic ring in sequence.

[0016] Furthermore, the housing comprises:

[0017] The assembled top cover, cylinder body and bottom cover form the activity chamber inside;

[0018] A plurality of upper exhaust holes and a plurality of lower exhaust holes are provided on the cylinder body;

[0019] When the piston reciprocates in the active chamber, the piston can move toward the bottom cover of the housing until the upper chamber is connected to the upper exhaust hole;

[0020] When the piston reciprocates in the active chamber, the piston can move toward the top cover of the housing until the lower chamber is communicated with the lower exhaust hole.

[0021] Furthermore, the wall thickness of the cylinder body is greater than the wall thickness of the cover edge of the top cover;

[0022] The wall thickness of the cylinder body is greater than the wall thickness of the cover edge of the bottom cover.

[0023] Furthermore, a bottom exhaust hole is provided on the bottom cover;

[0024] An air outlet passage is provided at one end of the air intake guide rod close to the bottom cover;

[0025] The air outlet channel is communicated with the bottom exhaust hole.

[0026] Furthermore, steps are formed at both ends of the piston;

[0027] When the upper chamber is communicated with the upper exhaust hole or the lower chamber is communicated with the lower exhaust hole, the step on the piston cooperates with the cylinder body to form an exhaust channel.

[0028] Furthermore, the air inlet of the upper air inlet channel and the air inlet of the lower air inlet channel are arranged in a vertically staggered manner;

[0029] The air inlets of the upper air inlet channel and the lower air inlet channel are arranged in vertically staggered positions.

[0030] Furthermore, a first air outlet and a second air outlet are provided at the end of the air delivery channel, and the first air outlet and the second air outlet are provided opposite to each other;

[0031] When the piston reciprocates in the active chamber, the piston can move toward the bottom cover of the housing until the first air outlet is connected to the lower air inlet channel;

[0032] When the piston reciprocates in the active chamber, the piston can move toward the top cover of the housing until the second air outlet is communicated with the upper air inlet channel.

[0033] In order to better understand and implement the present invention, the present invention is described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 It is a schematic cross-sectional structure diagram of a pneumatic magnetic reset linear vibrator in this embodiment. DETAILED DESCRIPTION

[0035] In order to better illustrate the present invention, the present invention is further described in detail below with reference to the accompanying drawings.

[0036] It should be clear that the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the embodiments of the present application.

[0037] The terms used in the embodiments of the present application are only for the purpose of describing specific embodiments, and are not intended to limit the embodiments of the present application. The singular forms of "a", "said" and "the" used in the embodiments of the present application and the appended claims are also intended to include plural forms, unless the context clearly indicates other meanings. It should also be understood that the term "and / or" used herein refers to and includes any or all possible combinations of one or more associated listed items.

[0038] When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. On the contrary, they are merely examples of devices and methods consistent with some aspects of the present application as detailed in the attached claims. In the description of the present application, it should be understood that the terms "first", "second", "third", etc. are only used to distinguish similar objects, and do not have to be used to describe a specific order or sequence, nor can they be understood as indicating or implying relative importance. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to the specific circumstances.

[0039] In addition, in the description of this application, unless otherwise specified, "plurality" means two or more. "And / or" describes the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone. The character " / " generally indicates that the associated objects are in an "or" relationship.

[0040] As an illustrative example of this application, Figure 1 As shown, a pneumatic magnetic reset linear vibrator comprises:

[0041] A housing 1 having an active cavity therein;

[0042] A piston 2 capable of reciprocating in the active chamber, wherein the piston 2 divides the active chamber into an upper chamber 101 and a lower chamber 102, and the peripheral wall of the piston 2 is in close contact with the inner wall of the housing 1, so that the upper chamber 101 and the lower chamber 102 are both in an independent state, and excessive flow of gas between the upper chamber 101 and the lower chamber 102 is avoided. In addition, a lower air intake channel 22 connecting the upper chamber 101 and the upper air intake channel 21 and connecting the lower chamber 102 is constructed in the piston 2;

[0043] An air intake guide rod 3 is arranged in the active chamber and passes through the piston 2. An air delivery channel 31 is arranged in the air intake guide rod 3. The input port of the air delivery channel 31 is connected to the outside of the housing 1 for connecting to an external air supply device. The air intake port of the air delivery channel 31 is alternately connected with the upper air intake channel 21 and the lower air intake channel 22 as the piston 2 reciprocates in the active chamber, and can alternately intake air into the upper chamber 101 and the lower chamber 102, so that the piston 2 can achieve reciprocating motion by utilizing the air pressure difference between the upper chamber 101 and the lower chamber 102;

[0044] Magnetic rings 4 are disposed on the inner wall of the housing 1 and one end of the piston 2. The two magnetic rings 4 have the same polarity and are disposed opposite to each other with the upper chamber 101 or the lower chamber 102 as a separation space.

[0045] In the present embodiment, a pneumatic magnetic reset linear vibrator comprises a shell 1 having an active cavity inside, a piston 2 capable of reciprocating in the active cavity, and an air intake guide rod 3 arranged in the active cavity and passing through the piston 2. The piston 2 divides the active cavity into an upper chamber 101 and a lower chamber 102. The air supply channel 31 in the air intake guide rod 3 is used to complete the air intake by utilizing the upper air intake channel 21 and the lower air intake channel 22 constructed in the piston 2, thereby realizing the function of the linear vibrator. The air intake guide rod 3 limits the installation of the piston 2. The friction contact area between the piston 2 and the air intake guide rod 3 is small, which can improve the vibration efficiency of the piston 2 in the shell 1. On this basis, by arranging magnetic rings 4 on the inner wall of the shell 1 and one end of the piston 2, the principle of polar repulsion of the two magnetic rings 4 is utilized. When the linear vibrator stops working, the piston 2 can be pushed and moved to a specified position or area to meet the requirement that the linear vibrator can be restarted normally.

[0046] It should be noted that the repulsive force between the two magnetic rings 4 is determined by the physical properties of the magnetic rings 4 of the present application. Therefore, during the reciprocating motion of the piston 2, the range of the repulsive force between the two magnets 4 is fixed.

[0047] Therefore, when the piston 2 stops reciprocating motion until it stops completely, it is affected by the repulsive force between the two magnetic rings 4, and the piston 2 will stop at a specified position or range in the housing 1 according to the repulsive force value between the two magnetic rings 4; in addition, the range area where the piston 2 stops is affected by the moment when the linear vibrator stops working, and the position of the piston 2 in the housing 1 at this time. In this embodiment, that is, in the linear direction of the intake guide rod 3, the distance between the two magnets 4 set at the end of the end wall of the housing 1 and the piston 2 adjacent to the end wall of the housing 1 affects the final stop position of the piston 2. In this embodiment, by using the magnetic force value of the magnet 4 or the spacing distance between the air inlet ports of the upper air inlet channel 21 and the lower air inlet channel 22, or the spacing distance between the exhaust ports corresponding to the upper chamber 101 and the lower chamber 102, the final stop position of the piston 2 meets the restart work requirements of the pneumatic linear vibrator. Figure 1 as shown in .

[0048] Specifically, as a preferred setting position of the two magnetic rings 4 in this embodiment, the two magnetic rings 4 include a first magnetic ring 4 and a second magnetic ring 4, the first magnetic ring 4 is set at the upper end of the outer shell 1, and the second magnetic ring 4 is set on the piston 2 and located at an end close to the upper end of the outer shell 1; and the first magnetic ring 4 and the second magnetic ring 4 are both ring-shaped, and the intake guide rod 3 is set through the first magnetic ring 4 and the second magnetic ring 4 in sequence.

[0049] The specific structure and application of the pneumatic magnetic reset linear vibrator in this embodiment are further described below:

[0050] like Figure 1 As shown in , the housing 1 comprises:

[0051] The assembled top cover 11, cylinder body 12 and bottom cover 13 form the activity chamber inside; a plurality of upper exhaust holes 121 and a plurality of lower exhaust holes 122 are opened on the cylinder body 12;

[0052] When the piston 2 reciprocates in the active chamber, the piston 2 can move toward the bottom cover 13 of the housing 1 until the upper chamber 101 is connected to the upper exhaust hole 121 to achieve the exhaust function of the upper chamber 101;

[0053] When the piston 2 reciprocates in the active chamber, the piston 2 can move toward the top cover 11 of the housing 1 until the lower chamber 102 is connected to the lower exhaust hole 122 to achieve the exhaust function of the lower chamber 102 .

[0054] As for the composition structure of the outer shell 1, the wall thickness of the cylinder body 12 is greater than the wall thickness of the cover edge of the top cover 11; the wall thickness of the cylinder body 12 is greater than the wall thickness of the cover edge of the bottom cover 13. At this time, the side wall of the outer shell 1 is "convex". On the one hand, the height of the cylinder body 12 determines the reciprocating motion range of the piston 2. On the other hand, the upper and lower end edges of the piston 2 are prevented from interfering with the close connection between the cylinder body 12, the top cover 11 and the bottom cover 13 when the piston 2 reciprocates.

[0055] like Figure 1 As shown in , a bottom exhaust hole 131 is opened on the bottom cover 13 ; an exhaust channel 32 is provided at one end of the air intake guide rod 3 close to the bottom cover 13 ; and the exhaust channel 32 is communicated with the bottom exhaust hole 131 .

[0056] When air is supplied through the air supply channel 31 in the air intake guide rod 3, the lower air intake channel 22 in the piston 2 is used to supply air to the lower chamber 102, so that the piston 2 moves upward; while supplying air to the lower chamber 102, the air outlet channel 32 constructed on the air intake guide rod 3 is used. The air outlet channel 32 is arranged in the lower chamber 102, and is combined with the bottom exhaust hole 131 for deflation, which has a wind blowing effect, and the functional application of air blowing and cleaning is achieved by using the wind blowing effect.

[0057] like Figure 1 As shown in , steps 23 are formed at both ends of the piston 2;

[0058] When the upper chamber 101 is connected to the upper exhaust hole 121 or the lower chamber 102 is connected to the lower exhaust hole 122, the step 23 on the piston 2 cooperates with the cylinder body 12 to form an exhaust channel, which is conducive to guiding orderly exhaust so that the piston 2 can be stable during high-speed reciprocating motion.

[0059] like Figure 1 As shown in , the air inlet of the upper air inlet channel 21 and the air inlet of the lower air inlet channel 22 are staggered up and down; the air inlet of the upper air inlet channel 21 and the air inlet of the lower air inlet channel 22 are staggered up and down.

[0060] A first air outlet 311 and a second air outlet 312 are provided at the end of the air delivery channel 31, and the first air outlet 311 and the second air outlet 312 are opposite to each other; when the piston 2 reciprocates in the active chamber, the piston 2 can move toward the bottom cover 13 of the outer shell 1 until the first air outlet 311 is connected with the lower air inlet channel 22; when the piston 2 reciprocates in the active chamber, the piston 2 can move toward the top cover 11 of the outer shell 1 until the second air outlet 312 is connected with the upper air inlet channel 21.

[0061] According to the disclosure and teaching of the above description, the technical personnel in the field to which the utility model belongs can also change and modify the above implementation. Therefore, the utility model is not limited to the specific implementation methods disclosed and described above, and some modifications and changes to the utility model should also fall within the scope of protection of the claims of the utility model. In addition, although some specific terms are used in this specification, these terms are only for the convenience of description and do not constitute any limitation to the utility model.

Claims

1. A pneumatic magnetic reset linear vibrator, characterized in that: include: A housing having an active cavity therein; A piston capable of reciprocating in the active chamber, the piston dividing the active chamber into an upper chamber and a lower chamber, a lower air intake passage connecting the upper chamber and the upper air intake passage and connecting the lower chamber is constructed in the piston; an air intake guide rod arranged in the active chamber and passing through the piston, an air delivery passage is arranged in the air intake guide rod, and an air inlet of the air delivery passage is alternately connected with the upper air intake passage and the lower air intake passage as the piston reciprocates in the active chamber; Magnetic rings are arranged on the inner wall of the shell and one end of the piston. The two magnetic rings have the same polarity and are arranged opposite to each other with the upper chamber or the lower chamber as a separation space.

2. The pneumatic magnetic reset linear vibrator according to claim 1, characterized in that: The two magnetic rings include a first magnetic ring and a second magnetic ring, wherein the first magnetic ring is arranged at the upper end of the shell, and the second magnetic ring is arranged on the piston and is located at one end close to the upper end of the shell; and The first magnetic ring and the second magnetic ring are both ring-shaped, and the air intake guide rod is arranged through the first magnetic ring and the second magnetic ring in sequence.

3. The pneumatic magnetic reset linear vibrator according to claim 1, characterized in that: The housing comprises: The assembled top cover, cylinder body and bottom cover form the activity chamber inside; A plurality of upper exhaust holes and a plurality of lower exhaust holes are provided on the cylinder body; When the piston reciprocates in the active chamber, the piston can move toward the bottom cover of the housing until the upper chamber is connected to the upper exhaust hole; When the piston reciprocates in the active chamber, the piston can move toward the top cover of the housing until the lower chamber is communicated with the lower exhaust hole.

4. The linear vibrator according to claim 3, characterized in that: The wall thickness of the cylinder body is greater than the wall thickness of the cover edge of the top cover; The wall thickness of the cylinder body is greater than the wall thickness of the cover edge of the bottom cover.

5. The pneumatic magnetic reset linear vibrator according to claim 3, characterized in that: A bottom exhaust hole is provided on the bottom cover; An air outlet passage is provided at one end of the air intake guide rod close to the bottom cover; The air outlet channel is communicated with the bottom exhaust hole.

6. The pneumatic magnetic reset linear vibrator according to claim 3, characterized in that: Both ends of the piston are provided with steps; When the upper chamber is communicated with the upper exhaust hole or the lower chamber is communicated with the lower exhaust hole, the step on the piston cooperates with the cylinder body to form an exhaust channel.

7. The pneumatic magnetic reset linear vibrator according to claim 1, characterized in that: The air inlet of the upper air inlet channel and the air inlet of the lower air inlet channel are arranged in vertical staggered arrangement; The air inlets of the upper air inlet channel and the lower air inlet channel are arranged in vertically staggered positions.

8. The pneumatic magnetic reset linear vibrator according to claim 7, characterized in that: A first air outlet and a second air outlet are provided at the end of the air delivery channel, and the first air outlet and the second air outlet are opposite to each other; When the piston reciprocates in the active chamber, the piston can move toward the bottom cover of the housing until the first air outlet is connected to the lower air inlet channel; When the piston reciprocates in the active chamber, the piston can move toward the top cover of the housing until the second air outlet is communicated with the upper air inlet channel.

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