Linear vibrator with adjustable frequency

Abstract

The utility model discloses a frequency-adjustable linear vibrator which comprises a shell with a movable cavity inside, an air inlet guide rod penetrating through the shell and extending into the movable cavity, and a piston arranged on the air inlet guide rod in a sleeved mode and arranged in the movable cavity, and the movable cavity is divided into an upper cavity and a lower cavity through the piston. An upper air inlet channel capable of being communicated with the upper cavity and a lower air inlet channel capable of being communicated with the lower cavity are formed in the piston, and an air inlet of an air conveying channel in the air inlet guide rod is alternately communicated with the upper air inlet channel and the lower air inlet channel along with the reciprocating motion of the piston in the movable cavity. Each group of exhaust holes comprises an upper exhaust hole and a lower exhaust hole which are respectively communicated with the upper chamber and the lower chamber, in addition, a sealing device is correspondingly arranged in each group of exhaust holes, and during application, the opening number of the exhaust holes can be set through the sealing devices, so that the exhaust efficiency of the upper chamber and the lower chamber is influenced; and the application purpose that the vibration frequency of the piston can be adjusted can be achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of linear vibrators, in particular to a linear vibrator with adjustable frequency. Background Art

[0002] The pneumatic magnetic reset linear vibrator uses high-pressure gas discharged from an air compressor to connect to the product's air inlet through an 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. During this process, when the piston moves to the left / right to the end point, the high-pressure gas reverses direction, causing the piston to reciprocate left and right, thereby generating linear vibration.

[0003] Currently, one to two exhaust holes are provided in a linear vibrator for exhaust purposes. In application, the exhaust efficiency of the exhaust holes affects the vibration frequency of the piston in the linear vibrator, thereby making the existing linear vibrator relatively single in application frequency and unable to meet multi-frequency applications. Utility Model Content

[0004] The purpose of the utility model is to provide a frequency-adjustable linear vibrator. By arranging a plurality of exhaust holes, a part of the exhaust holes can be opened during application to achieve the purpose of realizing multiple frequency applications.

[0005] In order to achieve the above-mentioned purpose, the technical solutions of the present utility model include:

[0006] A frequency-adjustable linear vibrator comprising:

[0007] A shell with an active chamber inside; an air intake guide rod passing through the shell and extending into the active chamber, an air delivery channel being provided in the air intake guide rod; a piston sleeved on the air intake guide rod and placed in the active chamber, the piston dividing the active chamber into an upper chamber and a lower chamber, an upper air intake channel capable of connecting to the upper chamber and a lower air intake channel capable of connecting to the lower chamber being constructed in the piston, the air inlet of the air delivery channel being alternately connected to the upper air intake channel and the lower air intake channel as the piston reciprocates in the active chamber; wherein, at least four groups of exhaust holes are provided on the shell; each group of exhaust holes includes an upper exhaust hole and a lower exhaust hole, the upper exhaust hole connecting to the upper chamber, and the lower exhaust hole connecting to the lower chamber; each upper exhaust hole and each lower exhaust hole is provided with a detachable closing device capable of closing the upper exhaust hole or the lower exhaust hole.

[0008] Compared with the prior art, the present application provides a frequency-adjustable linear vibrator, comprising a shell having an active chamber therein, an air intake guide rod passing through the shell and extending into the active chamber, and a piston sleeved on the air intake guide rod and placed in the active chamber, the piston dividing the active chamber into an upper chamber and a lower chamber, an upper air intake channel connected to the upper chamber and a lower air intake channel connected to the lower chamber are constructed in the piston, the air inlet of the air transmission channel in the air intake guide rod is alternately connected with the upper air intake channel and the lower air intake channel as the piston reciprocates in the active chamber, four groups of exhaust holes are arranged on the shell, each group of exhaust holes includes an upper exhaust hole and a lower exhaust hole, which are respectively connected to the upper chamber and the lower chamber, and a corresponding closing device is arranged in each group of exhaust holes. When used, the number of exhaust holes opened can be set by the closing device to affect the exhaust efficiency of the upper chamber and the lower chamber, thereby achieving the application purpose of adjustable piston vibration frequency.

[0009] Furthermore, four groups of exhaust holes are provided on the housing;

[0010] The four groups of exhaust holes include a first exhaust hole, a second exhaust hole, a third exhaust hole and a fourth exhaust hole;

[0011] The first exhaust hole, the second exhaust hole, the third exhaust hole and the fourth exhaust hole are arranged on the housing in sequence and at equal intervals;

[0012] The first exhaust hole and the second exhaust hole, the second exhaust hole and the third exhaust hole, the third exhaust hole and the fourth exhaust hole, and the first exhaust hole and the fourth exhaust hole are arranged at an angle of 90 degrees.

[0013] Furthermore, the first exhaust hole, the second exhaust hole, the third exhaust hole and the fourth exhaust hole are all waist-shaped exhaust holes.

[0014] Furthermore, the closing device is a plug capable of closing each upper exhaust hole and each lower exhaust hole.

[0015] Furthermore, the housing includes:

[0016] The assembled top cover, cylinder body and bottom cover form the movable cavity inside;

[0017] When the piston reciprocates in the movable chamber, the piston can move toward the bottom cover of the housing until the upper chamber is connected to each upper exhaust hole;

[0018] When the piston reciprocates in the movable chamber, the piston can move toward the top cover of the housing until the lower chamber is communicated with each lower exhaust hole.

[0019] Furthermore, both ends of the piston are provided with steps;

[0020] The step includes an upper step and a lower step. The upper step cooperates with the cylinder body to form an upper annular air groove, and the lower step cooperates with the cylinder body to form a lower annular air groove.

[0021] 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

[0022] Figure 1 is a cross-sectional view of a frequency-adjustable linear vibrator in this embodiment;

[0023] Figure 2 1 is a schematic diagram of the overall structure of a frequency-adjustable linear vibrator in this embodiment;

[0024] Figure 3 1 is a schematic diagram of the overall structure of a frequency-adjustable linear vibrator in this embodiment, indicating another angle. DETAILED DESCRIPTION

[0025] In order to better illustrate the present invention, the present invention is further described in detail below with reference to the accompanying drawings.

[0026] It should be clear that the embodiments described are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments of the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the embodiments of the present application.

[0027] The terms used in the embodiments of the present application are for the purpose of describing specific embodiments only and are not intended to limit the embodiments of the present application. The singular forms "a," "the," 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 otherwise. 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.

[0028] When the following description refers to the accompanying 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 appended 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 are not necessarily 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.

[0029] In addition, in this application, unless otherwise specified, "plurality" refers to two or more. "And / or" describes the relationship between associated objects, indicating that three possible relationships exist. For example, "A and / or B" can mean: A exists alone, A and B exist simultaneously, or B exists alone. The character " / " generally indicates that the associated objects are in an "or" relationship.

[0030] As a preferred embodiment of this application, Figure 1 As shown, a frequency-adjustable linear vibrator comprises:

[0031] A housing 1 having an active chamber 11 therein; an intake guide rod 2 passing through the housing 1 and extending into the active chamber 11, wherein the intake guide rod 2 is provided with an air delivery channel 21; a piston 3 sleeved on the intake guide rod 2 and placed in the active chamber 11, wherein the piston 3 divides the active chamber 11 into an upper chamber 111 and a lower chamber 112, wherein an upper intake channel capable of communicating with the upper chamber 111 and a lower intake channel capable of communicating with the lower chamber 112 are constructed in the piston 3, and an air inlet of the air delivery channel 21 is opened as the piston 3 moves in the active chamber 11 reciprocates and is alternately connected with the upper air inlet channel and the lower air inlet channel; wherein, at least four groups of exhaust holes 12 are opened on the shell 1; each group of exhaust holes 12 includes an upper exhaust hole 121 and a lower exhaust hole 122, the upper exhaust hole 121 is connected to the upper chamber 111, and the lower exhaust hole 122 is connected to the lower chamber 112; each upper exhaust hole 121 and each lower exhaust hole 122 is provided with a detachable closing device capable of closing the upper exhaust hole 121 or the lower exhaust hole 122.

[0032] In this embodiment, a frequency-adjustable linear vibrator includes a housing 1 having an active chamber 11 therein, an air intake guide rod 2 passing through the housing 1 and extending into the active chamber 11, and a piston 3 sleeved on the air intake guide rod 2 and placed in the active chamber 11. The piston 3 divides the active chamber 11 into an upper chamber 111 and a lower chamber 112. An upper air intake channel that can communicate with the upper chamber 111 and a lower air intake channel that can communicate with the lower chamber 112 are constructed in the piston 3. The air inlet of the air delivery channel 21 in the air intake guide rod 2 is opened as the piston 3 moves in the active chamber 111. 1 and is alternately connected with the upper air inlet channel and the lower air inlet channel. By providing four groups of exhaust holes 12 on the housing 1, each group of exhaust holes 12 includes an upper exhaust hole 121 and a lower exhaust hole 122, which are respectively connected to the upper chamber 111 and the lower chamber 112. In addition, a sealing device is correspondingly provided in each group of exhaust holes 12. When used, the number of exhaust holes 12 opened can be set by the sealing device to affect the exhaust efficiency of the upper chamber 111 and the lower chamber 112, thereby achieving the application purpose of adjusting the vibration frequency of the piston 3.

[0033] As a preferred Figures 1 to 3As shown, four groups of exhaust holes 12 are provided on the housing 1;

[0034] The four groups of exhaust holes 12 include a first exhaust hole 1201 , a second exhaust hole 1202 , a third exhaust hole 1203 and a fourth exhaust hole 1204 .

[0035] For example, the application of this embodiment is as follows:

[0036] When high-pressure air with constant pressure and flow is input into the air delivery channel 21 in the air intake guide rod 2 and the set frequency is maintained in the upper chamber 111 and the lower chamber 112, the movement direction of the piston 3 is changed or the high-pressure air enters the upper air intake channel from the air intake guide rod 2 and switches to enter the lower air intake channel.

[0037] Under the above conditions, first, the first exhaust hole 1201 is opened, and the second exhaust hole 1202, the third exhaust hole 1203 and the fourth exhaust hole 1204 are closed, and the piston 3 in the linear vibrator can operate at the first reciprocating frequency;

[0038] Second, the first exhaust hole 1201 and the second exhaust hole 1202 are opened, and the third exhaust hole 1203 and the fourth exhaust hole 1204 are closed, so that the piston 3 in the linear vibrator can operate at the second reciprocating frequency;

[0039] Third, the first exhaust hole 1201, the second exhaust hole 1202 and the third exhaust hole 1203 are opened, and the fourth exhaust hole 1204 is closed, so that the piston 3 in the linear vibrator can operate at the third reciprocating frequency;

[0040] Fourth, the first exhaust hole 1201 , the second exhaust hole 1202 , the third exhaust hole 1203 and the fourth exhaust hole 1204 are opened, and the piston 3 in the linear vibrator can operate at the fourth reciprocating frequency.

[0041] The first reciprocating frequency, the second reciprocating frequency, the third reciprocating frequency and the fourth reciprocating frequency can be calculated based on the hole size of the exhaust hole 12 and the input flow rate of the high-pressure air, which is known in the prior art and will not be described here.

[0042] Based on the above, adjustable realization of multiple frequency applications is achieved.

[0043] Regarding the arrangement of the four groups of exhaust holes 12, the first exhaust hole 1201, the second exhaust hole 1202, the third exhaust hole 1203 and the fourth exhaust hole 1204 are arranged on the housing 1 at equal intervals.

[0044] The first exhaust hole 1201 and the second exhaust hole 1202, the second exhaust hole 1202 and the third exhaust hole 1203, the third exhaust hole 1203 and the fourth exhaust hole 1204, and the first exhaust hole 1201 and the fourth exhaust hole 1204 are arranged at a 90° angle, which is conducive to uniform discharge of air in the upper chamber 111 or the lower chamber 112.

[0045] Combine Figure 2 and Figure 3 As shown, in this embodiment, the first exhaust hole 1201 and the second exhaust hole 1202 are positioned opposite to each other, and the third exhaust hole 1203 and the fourth exhaust hole 1204 are positioned opposite to each other. According to the above-mentioned frequency-adjustable application implementation method, when the piston 3 works at the second reciprocating frequency, if the first exhaust hole 1201 and the second exhaust hole 1202 are not symmetrically designed in that they are positioned opposite to each other, the air flow in the upper chamber 111 and the lower chamber 112 will be chaotic and difficult to control, which will cause the frequency to be difficult to control and the exhaust efficiency to be low.

[0046] Similarly, in this embodiment, the third exhaust hole 1203 and the fourth exhaust hole 1204 are disposed at opposite positions.

[0047] In this embodiment, the closing device is a plug capable of closing each upper exhaust hole 121 and each lower exhaust hole 122. According to needs, the plug is opened accordingly to cope with different frequencies of the piston 3 working mode.

[0048] In this embodiment, for other structures of the linear vibrator, in this embodiment, such as Figure 1 As shown, regarding the structure of the housing 1, the housing 1 includes:

[0049] The assembled top cover 101, cylinder body 102 and bottom cover 103 form the movable chamber 11 therein;

[0050] When the piston 3 reciprocates in the active chamber 11 , the piston 3 can move toward the bottom cover 103 of the housing 1 until the upper chamber 111 is connected to each upper exhaust hole 121 , thereby achieving the exhaust function of the upper chamber 111 ;

[0051] When the piston 3 reciprocates in the active chamber 11 , the piston 3 can move toward the top cover 101 of the housing 1 until the lower chamber 112 is connected to each lower exhaust hole 122 , thereby achieving the exhaust function of the lower chamber 112 .

[0052] In this embodiment, if Figure 1 As shown, both ends of the piston 3 are provided with steps 31;

[0053] The step 31 includes an upper step and a lower step. The upper step cooperates with the cylinder body 102 to form an upper annular air groove, and the lower step cooperates with the cylinder body 102 to form a lower annular air groove.

[0054] When exhausting the upper chamber 111 or the lower chamber 112, the piston 3 will push the air in the upper chamber 111 or the lower chamber 112 to be discharged when it moves toward the upper chamber 111 or the lower chamber 112. Due to the setting of the step 31, the difference in the moving stroke of the air pushed between the middle and the edge of the piston 3 is utilized during the pushing process of the piston 3. When the pushed air moves in the opposite direction due to the obstruction of the top cover 101 or the bottom cover 103, it will converge at the exhaust hole 12, which is conducive to exhaust.

[0055] Based on the disclosure and teachings of the above description, those skilled in the art may also make changes and modifications to the above embodiments. Therefore, the present invention is not limited to the specific embodiments disclosed and described above, and any modifications and variations of the present invention should also fall within the scope of protection of the claims of the present invention. In addition, although certain specific terms are used in this description, these terms are for convenience of description only and do not constitute any limitation to the present invention.

Claims

1. A frequency-adjustable linear vibrator, characterized in that: include: a housing having an active cavity therein; An air intake guide rod passes through the shell and extends into the active cavity, wherein an air delivery channel is provided in the air intake guide rod; A piston is sleeved on the intake guide rod and placed in the active chamber. The piston divides the active chamber into an upper chamber and a lower chamber. An upper intake channel that can communicate with the upper chamber and a lower intake channel that communicate with the lower chamber are constructed in the piston. The intake port of the gas transmission channel is alternately connected to the upper intake channel and the lower intake channel as the piston reciprocates in the active chamber. Wherein, at least four groups of exhaust holes are opened on the shell; Each group of exhaust holes includes an upper exhaust hole and a lower exhaust hole, wherein the upper exhaust hole is connected to the upper chamber, and the lower exhaust hole is connected to the lower chamber; Each upper exhaust hole and each lower exhaust hole is provided with a detachable closing device capable of closing the upper exhaust hole or the lower exhaust hole.

2. The frequency-adjustable linear vibrator according to claim 1, characterized in that: Four groups of exhaust holes are provided on the shell; The four groups of exhaust holes include a first exhaust hole, a second exhaust hole, a third exhaust hole and a fourth exhaust hole; the first exhaust hole, the second exhaust hole, the third exhaust hole and the fourth exhaust hole are arranged on the housing at equal intervals. The first exhaust hole and the second exhaust hole, the second exhaust hole and the third exhaust hole, the third exhaust hole and the fourth exhaust hole, and the first exhaust hole and the fourth exhaust hole are arranged at an angle of 90 degrees.

3. The frequency-adjustable linear vibrator according to claim 1, wherein: The closing device is a plug capable of closing each upper exhaust hole and each lower exhaust hole.

4. The frequency-adjustable linear vibrator according to claim 1, wherein: The housing comprises: an assembled top cover, a cylinder body and a bottom cover, wherein the assembled top cover, the cylinder body and the bottom cover form the movable cavity inside; When the piston reciprocates in the movable chamber, the piston can move toward the bottom cover of the housing until the upper chamber is connected to each upper exhaust hole; When the piston reciprocates in the movable chamber, the piston can move toward the top cover of the housing until the lower chamber is communicated with each lower exhaust hole.

5. The frequency-adjustable linear vibrator according to claim 4, characterized in that: Both ends of the piston are provided with steps; The step includes an upper step and a lower step. The upper step cooperates with the cylinder body to form an upper annular air groove, and the lower step cooperates with the cylinder body to form a lower annular air groove.

Images