Portable signal generator

Abstract

The utility model relates to a portable signal generator, and belongs to the field of measurement and control equipment, the portable signal generator comprises a casing with an inner cavity, the side wall of the casing is provided with a heat dissipation window, the top wall of the casing is provided with an air outlet window, the air outlet window is internally provided with an air draft device, and the air draft device is used for pumping air in the inner cavity of the casing to the outer side of the casing; a plurality of shutter sheets arranged from top to bottom are arranged in the heat dissipation window, the shutter sheets are rotatably connected in the heat dissipation window through rotating shafts, and when the shutter sheets are in a vertical state, the adjacent shutter sheets abut against each other so as to seal the heat dissipation window; an inner cavity of the machine shell is provided with an opening and closing control mechanism for controlling all the shutter pieces to rotate at the same time. The portable signal generator has the advantages that the heat dissipation effect of the portable signal generator is improved, and the service life of the portable signal generator is prolonged.

Description

Technical Field

[0001] The present application relates to the field of measurement and control equipment, and in particular to a portable signal generator. Background Art

[0002] A signal generator, also known as a signal source or oscillator, is a device that can provide electrical signals of various frequencies, waveforms, and output levels. When measuring the amplitude characteristics, frequency characteristics, transmission characteristics, and other electrical parameters of various telecommunication systems or telecommunication devices, as well as when measuring the characteristics and parameters of components, it is used as a test signal source or excitation source, and has a wide range of applications in production practice and the scientific and technological fields.

[0003] The degree of integration of the internal components of a portable signal generator is high. A high degree of integration indicates that it is easier for heat to accumulate and not dissipate when the components are working, resulting in an increase in the temperature inside the portable signal generator. Therefore, how to improve the heat dissipation effect of a signal generator with a high degree of integration during operation remains an issue to be solved. Summary of the Utility Model

[0004] In order to improve the heat dissipation effect of the portable signal generator and extend its service life, the present application provides a portable signal generator.

[0005] The portable signal generator provided by the present application adopts the following technical solutions:

[0006] A portable signal generator includes a housing with an inner cavity. A heat dissipation window is provided on the side wall of the housing, and an air outlet window is provided on the top wall of the housing. An air extraction device is installed in the air outlet window, and the air extraction device is used to extract the air in the inner cavity of the housing to the outside of the housing.

[0007] A plurality of louver blades arranged vertically are provided in the heat dissipation window. The louver blades are rotatably connected to the heat dissipation window through a rotating shaft. When the louver blades are in a vertical state, adjacent louver blades abut against each other to close the heat dissipation window. An opening and closing control mechanism for simultaneously controlling the rotation of all louver blades is provided in the inner cavity of the housing.

[0008] By adopting the above technical solutions, when the portable signal generator is in use, the opening and closing control mechanism controls the rotation of the louver blades to open the heat dissipation window, and at the same time, the air extraction device is turned on. The air extraction device extracts the hot air in the inner cavity of the housing to the outside of the housing, and the cold air outside the housing enters the inner cavity of the housing through the heat dissipation window, completing the rapid cooling of the inner cavity of the housing.

[0009] Optionally, heat dissipation windows are provided on both the left and right side walls of the housing.

[0010] By adopting the above technical solution, the air outside the casing can be accelerated to flow into the inner cavity of the casing.

[0011] Optionally, the opening and closing control mechanism includes driven gears having the same number as the louver blades, and the driven gears correspond to the louver blades one by one and are fixed on the rotating shafts of the corresponding louver blades;

[0012] The opening and closing control mechanism further includes a left rack and a right rack arranged vertically. Both the left rack and the right rack are movably connected inside the casing, and the moving directions of the left rack and the right rack are arranged vertically;

[0013] The driven gear on the louver blade in the left heat dissipation window meshes with the left rack;

[0014] The driven gear on the louver blade in the right heat dissipation window meshes with the right rack;

[0015] A driving assembly for simultaneously driving the left rack and the right rack to move vertically is arranged in the inner cavity of the casing.

[0016] By adopting the above technical solution, the driving assembly controls the left rack and the right rack to move in the vertical direction simultaneously. Since the left rack meshes with the driven gear on the left louver blade and the right rack meshes with the driven gear on the right louver blade, when the left rack and the right rack move, all the louver blades can be driven to rotate simultaneously, and the heat dissipation windows on both sides of the casing can be opened or closed simultaneously.

[0017] Optionally, a left guide post and a right guide post arranged vertically are provided in the inner cavity of the casing;

[0018] The left guide post vertically penetrates the left rack, and the left rack is slidably connected to the left guide post;

[0019] The right guide post vertically penetrates the right rack, and the right rack is slidably connected to the right guide post.

[0020] By adopting the above technical solution, the left guide post penetrates the left rack, thereby guiding the movement of the left rack and enabling the left rack to move only in the vertical direction along the left guide post; the right guide post penetrates the right rack, thereby guiding the movement of the right rack and enabling the right rack to move only in the vertical direction along the right guide post.

[0021] Optionally, the driving assembly includes a horizontally arranged double-headed lead screw and a driving member for driving the double-headed lead screw to rotate. The double-headed lead screw is rotatably connected in the inner cavity of the casing;

[0022] The double-headed lead screw includes a left-handed section and a right-handed section arranged coaxially;

[0023] A left lead screw nut is threadedly connected to the left-handed section;

[0024] A right lead screw nut is threadedly connected to the right-handed section;

[0025] A first connecting rod is arranged between the left lead screw nut and the left rack. One end of the first connecting rod is hinged to the left lead screw nut, and the other end of the first connecting rod is hinged to the left rack;

[0026] A second connecting rod is arranged between the right lead screw nut and the right rack. One end of the second connecting rod is hinged to the right lead screw nut, and the other end of the second connecting rod is hinged to the right rack.

[0027] By adopting the above technical solution, when the double-headed lead screw rotates, the left lead screw nut on the left-handed section and the right lead screw nut on the right-handed section will move simultaneously and approach or move away from each other, thereby synchronously driving the left rack and the right rack to move and ensuring the synchronism of the rotation of the louver blades.

[0028] Optionally, the driving member is located on the outer surface of the housing.

[0029] By adopting the above technical solution, it is more conducive to the dissipation of heat generated by the driving member during operation, and the heat generated during the operation of the driving member is directly discharged to the outside of the housing.

[0030] Optionally, a guiding cross bar parallel to the double-headed lead screw is arranged in the inner cavity of the housing. The guiding cross bar penetrates through the left lead screw nut and the right lead screw nut, and both the left lead screw nut and the right lead screw nut are slidably connected to the guiding cross bar.

[0031] By adopting the above technical solution, the movement of the left lead screw nut and the right lead screw nut is guided by the guiding cross bar, so that the left lead screw nut and the right lead screw nut can move more smoothly, reducing the influence of the rotational force on the left lead screw nut and the right lead screw nut during the rotation of the double-headed lead screw, and enabling the left lead screw nut and the right lead screw nut to move smoothly.

[0032] Optionally, the inner cavity of the housing is divided into an installation cavity and a control cavity by a partition plate. The installation cavity is located in front of the control cavity. The rotating shaft extends into the control cavity, and the opening and closing control mechanism is located inside the control cavity.

[0033] By adopting the above technical solution, the partition plate divides the inner cavity of the casing into an installation cavity and a control cavity. The components required for the portable signal generator are installed inside the installation cavity, and the opening and closing control mechanism is installed inside the control cavity, so that the opening and closing control mechanism will not affect the components of the portable signal generator during operation. At the same time, during the production and assembly of the portable signal generator, it is convenient to install the components.

[0034] In summary, the present application includes at least one of the following beneficial technical effects:

[0035] 1. When the portable signal generator is in use, the opening and closing control mechanism controls the louver blades to rotate, opening the heat dissipation window. At the same time, the air extraction device is turned on, and the air extraction device extracts the hot air in the inner cavity of the casing to the outside of the casing, and the cold air outside the casing enters the inner cavity of the casing through the heat dissipation window, completing the rapid cooling of the inner cavity of the casing;

[0036] 2. The driving component controls the left rack and the right rack to move simultaneously. Since the left rack and the right rack are engaged with the driven gears on the louver blades, when the left rack and the right rack move, they can drive the louver blades to rotate simultaneously, realizing the simultaneous opening or closing of the heat dissipation windows on both sides of the casing;

[0037] 3. The partition plate divides the inner cavity of the casing into an installation cavity and a control cavity. The components required for the portable signal generator are installed inside the installation cavity, and the opening and closing control mechanism is installed inside the control cavity, so that the opening and closing control mechanism will not affect the components of the portable signal generator during operation. At the same time, during the production and assembly of the portable signal generator, it is convenient to install the components. Description of the Drawings

[0038] Figure 1 is a schematic structural diagram of the portable signal generator according to an embodiment of the present application;

[0039] Figure 2 is a cross-sectional view of the portable signal generator according to an embodiment of the present application;

[0040] Figure 3 is a schematic diagram of the internal structure of the installation cavity of the casing according to an embodiment of the present application;

[0041] Figure 4 is a schematic diagram of the internal structure of the control cavity of the casing according to an embodiment of the present application;

[0042] Figure 5 is a schematic diagram of the connection structure between the opening and closing control mechanism and the louver blades according to an embodiment of the present application;

[0043] Figure 6 is Figure 5Partial enlarged view of part A;

[0044] Figure 7 It is a schematic structural view of the connection structure between the opening and closing control mechanism and the louver blades of the embodiment of the present application from another perspective;

[0045] Figure 8 Is Figure 7 Partial enlarged view of part B;

[0046] Figure 9 It is a schematic structural view of the connection structure between the double-headed lead screw and the left rack and the right rack of the embodiment of the present application.

[0047] Explanation of reference numerals: 1, housing; 11, partition board; 12, installation cavity; 13, control cavity; 14, heat dissipation window; 15, air outlet window; 2, fan; 3, louver blade; 31, rotating shaft; 4, opening and closing control mechanism; 41, driven gear; 42, left rack; 43, right rack; 44, left guiding column; 45, right guiding column; 46, double-headed lead screw; 461, left-handed section; 462, right-handed section; 47, left lead screw nut; 48, right lead screw nut; 49, first connecting rod; 410, second connecting rod; 411, guiding cross bar; 412, motor. Detailed implementation manners

[0048] The following further describes the present application in detail with reference to the attached Figures 1-9 drawings.

[0049] The embodiment of the present application discloses a portable signal generator.

[0050] Referring to Figure 1 、 Figure 2 , the portable signal generator includes a housing 1 with an inner cavity. A partition board 11 is arranged in the inner cavity of the housing 1. The partition board 11 divides the inner cavity of the housing 1 into an installation cavity 12 and a control cavity 13 arranged in the front and back. The installation cavity 12 is located in front of the control cavity 13. The installation cavity 12 is used to install the components required for the portable signal generator.

[0051] Referring to Figure 2 、 Figure 3 , heat dissipation windows 14 are opened on the side walls of the left and right sides of the housing 1. The heat dissipation windows 14 communicate the installation cavity 12 with the outer space of the housing 1. An air outlet window 15 is opened at the top of the housing 1. The air outlet window 15 is communicated with the inside of the installation cavity 12. A fan 2 is installed inside the air outlet window 15. The fan 2 is used to pump the air inside the installation cavity 12 to the outside of the housing 1.

[0052] Referring to Figure 3 、 Figure 4, inside the heat dissipation window 14, a plurality of louver blades 3 are arranged vertically from top to bottom. The louver blades 3 are rotatably connected to the inside of the heat dissipation window 14 through a horizontally arranged rotating shaft 31. The rotating shaft 31 and the louver blade 3 are integrally formed. When the louver blade 3 is in the vertical state, adjacent louver blades 3 are in contact with each other, thereby closing the heat dissipation window 14. When the louver blade 3 gradually rotates to the horizontal state, adjacent louver blades 3 are separated and a ventilation channel is formed between adjacent louver blades 3, enabling the air outside the housing 1 to enter the inside of the installation cavity 12 through the ventilation channel between adjacent louver blades 3.

[0053] One end of the rotating shaft 31 of the louver blade 3 facing the rear end of the housing 1 penetrates through the partition plate 11 and extends into the control cavity 13. An opening and closing control mechanism 4 for simultaneously driving the rotating shafts 31 of all the louver blades 3 to rotate is arranged inside the control cavity 13. Through the opening and closing control mechanism 4, all the louver blades 3 are simultaneously controlled to rotate, realizing the opening and closing of the heat dissipation window 14.

[0054] Refer to Figure 5 , the opening and closing control mechanism 4 includes driven gears 41 having the same number as the louver blades 3, and the driven gears 41 correspond to the louver blades 3 one by one. The driven gear 41 is fixed on the corresponding rotating shaft 31 of the louver blade 3. The driven gear 41 and the rotating shaft 31 are coaxially arranged. The driven gear 41 is fixed at the end of the rotating shaft 31 extending into the control cavity 13.

[0055] Refer to Figure 5 、 Figure 6 , the opening and closing control mechanism 4 further includes a left rack 42 and a right rack 43 arranged vertically. The left rack 42 and the right rack 43 are movably arranged inside the control cavity 13, and the moving directions of the left rack 42 and the right rack 43 are vertically arranged. A left guide post 44 and a right guide post 45 are arranged inside the control cavity 13. The bottom end of the left guide post 44 is fixed to the bottom plate of the control cavity 13, and the top end of the left guide post 44 is fixed to the top plate of the control cavity 13. The bottom end of the right guide post 45 is fixed to the bottom plate of the control cavity 13, and the top end of the right guide post 45 is fixed to the top plate of the control cavity 13.

[0056] The left guide post 44 vertically penetrates through the left rack 42, and the left rack 42 is slidably connected to the left guide post 44. The right guide post 45 vertically penetrates through the right rack 43, and the right rack 43 is slidably connected to the right guide post 45.

[0057] Refer to Figure 3 、 Figure 5 、 Figure 6, in the louvers 3 within the heat dissipation window 14 on the left side, the driven gears 41 on the rotating shafts 31 of all the louvers 3 are engaged with the left rack 42. When the left rack 42 moves in the vertical direction, under the cooperation of the left rack 42 and the driven gears 41 on the rotating shafts 31 of the louvers 3, the louvers 3 within the heat dissipation window 14 on the left side can rotate simultaneously, thereby opening or closing the heat dissipation window 14 on the left side.

[0058] Refer to Figure 3 , Figure 7 , Figure 8 , in the louvers 3 within the heat dissipation window 14 on the right side, the driven gears 41 on the rotating shafts 31 of all the louvers 3 are engaged with the right rack 43. When the right rack 43 moves in the vertical direction, under the cooperation of the right rack 43 and the driven gears 41 on the rotating shafts 31 of the louvers 3, the louvers 3 within the heat dissipation window 14 on the right side can rotate simultaneously, thereby opening or closing the heat dissipation window 14 on the right side.

[0059] Refer to Figure 7 , Figure 9 , the opening and closing control mechanism 4 further includes a double-headed lead screw 46 that is horizontally arranged and rotatably connected inside the control cavity 13. One end of the double-headed lead screw 46 is rotatably connected to the left side wall of the control cavity 13, and the other end of the double-headed lead screw 46 is rotatably connected to the right side wall of the control cavity 13. The double-headed lead screw 46 includes a coaxial left-handed section 461 and a right-handed section 462. A left lead screw nut 47 is threadedly connected to the left-handed section 461. A right lead screw nut 48 is threadedly connected to the right-handed section 462.

[0060] A first connecting rod 49 is provided between the left lead screw nut 47 and the left rack 42. One end of the first connecting rod 49 is hinged to the left lead screw nut 47, and the other end of the first connecting rod 49 is hinged to the left rack 42.

[0061] A second connecting rod 410 is provided between the right lead screw nut 48 and the right rack 43. One end of the second connecting rod 410 is hinged to the right lead screw nut 48, and the other end of the second connecting rod 410 is hinged to the right rack 43.

[0062] When the double-headed lead screw 46 rotates, the left lead screw nut 47 and the right lead screw nut 48 will approach or move away from each other. When the left lead screw nut 47 and the right lead screw nut 48 approach or move away from each other, the first connecting rod 49 between the left lead screw nut 47 and the left rack 42 will pull the left rack 42 to move in the vertical direction, and the second connecting rod 410 between the right lead screw nut 48 and the right rack 43 will pull the right rack 43 to move in the vertical direction.

[0063] Inside the control cavity 13, a guiding cross bar 411 parallel to the double-headed lead screw 46 is further provided. One end of the guiding cross bar 411 is fixed to the left side wall of the control cavity 13, and the other end of the guiding cross bar 411 is fixed to the right side wall of the control cavity 13. The guiding cross bar 411 penetrates through the left lead screw nut 47 and the right lead screw nut 48, and both the left lead screw nut 47 and the right lead screw nut 48 are slidably connected to the guiding cross bar 411.

[0064] Referring to Figure 4 , one end of the double-headed lead screw 46 penetrates through the side wall of the machine housing 1 and exposes. In this embodiment, the double-headed lead screw 46 penetrates through the right side wall of the machine housing 1. The opening and closing control mechanism 4 further includes a motor 412 fixed to the outer surface of the right side wall of the machine housing 1. The motor shaft of the motor 412 is coaxial with and fixed to the double-headed lead screw 46. When the motor 412 is started, the motor shaft of the motor 412 drives the double-headed lead screw 46 to rotate.

[0065] In summary, when assembling the portable signal generator, the internal components of the portable signal generator are all installed inside the installation cavity 12. When using the portable signal generator, the heat dissipation windows 14 on both the left and right sides of the machine housing 1 are opened through the opening and closing control mechanism 4, and at the same time, the fan 2 is turned on, so that the fan 2 extracts the hot air inside the installation cavity 12, and the air outside the machine housing 1 enters the installation cavity 12 through the heat dissipation windows 14, accelerating the discharge speed of the heat inside the installation cavity 12.

[0066] The above are all the preferred embodiments of this application. It does not limit the protection scope of this application accordingly. Therefore, all equivalent changes made according to the structure, shape, and principle of this application should be covered within the protection scope of this application.

Claims

1. A portable signal generator, comprising a housing (1) with an inner cavity, characterized in that: A heat dissipation window (14) is provided on the side wall of the casing (1), an air outlet window (15) is provided on the top wall of the casing (1), and an air exhaust device is installed in the air outlet window (15), and the air exhaust device is used to extract air from the inner cavity of the casing (1) to the outside of the casing (1); A plurality of louver sheets (3) arranged from top to bottom are arranged in the heat dissipation window (14); the louver sheets (3) are rotatably connected in the heat dissipation window (14) via a rotating shaft (31); when the louver sheets (3) are in a vertical state, adjacent louver sheets (3) abut against each other, thereby closing the heat dissipation window (14); and an opening and closing control mechanism (4) for simultaneously controlling the rotation of all the louver sheets (3) is arranged in the inner cavity of the housing (1).

2. A portable signal generator according to claim 1, characterized in that: The side walls on the left and right sides of the casing (1) are both provided with heat dissipation windows (14).

3. A portable signal generator according to claim 2, characterized in that: The opening and closing control mechanism (4) comprises driven gears (41) having the same number as the number of the louver sheets (3); the driven gears (41) correspond to the louver sheets (3) one by one and are fixed on the rotating shaft (31) of the corresponding louver sheet (3); The opening and closing control mechanism (4) further comprises a left rack (42) and a right rack (43) arranged vertically, wherein the left rack (42) and the right rack (43) are both movably connected in the housing (1), and the movement directions of the left rack (42) and the right rack (43) are arranged vertically; The driven gear (41) on the shutter sheet (3) in the left heat dissipation window (14) is meshed with the left rack (42); The driven gear (41) on the shutter sheet (3) in the right heat dissipation window (14) is meshed with the right rack (43); The inner cavity of the housing (1) is provided with a driving assembly that simultaneously drives the left rack (42) and the right rack (43) to move vertically.

4. A portable signal generator according to claim 3, characterized in that: A left guide column (44) and a right guide column (45) arranged vertically are arranged in the inner cavity of the housing (1); The left guide column (44) vertically penetrates the left rack (42), and the left rack (42) is slidably connected to the left guide column (44); The right guide column (45) vertically penetrates the right rack (43), and the right rack (43) is slidably connected to the right guide column (45).

5. A portable signal generator according to claim 3, characterized in that: The driving assembly comprises a transversely arranged double-ended lead screw (46) and a driving member for driving the double-ended lead screw (46) to rotate, wherein the double-ended lead screw (46) is rotatably connected in the inner cavity of the housing (1); The double-ended screw (46) comprises a left-handed section (461) and a right-handed section (462) which are coaxially arranged; The left-handed section (461) is threadedly connected with a left lead screw nut (47); The right-handed section (462) is threadedly connected with a right lead screw nut (48); A first connecting rod (49) is provided between the left screw nut (47) and the left rack (42), one end of the first connecting rod (49) is hinged to the left screw nut (47), and the other end of the first connecting rod (49) is hinged to the left rack (42); A second connecting rod (410) is provided between the right screw nut (48) and the right rack (43), one end of the second connecting rod (410) is hinged to the right screw nut (48), and the other end of the second connecting rod (410) is hinged to the right rack (43).

6. A portable signal generator according to claim 5, characterized in that: The driving member is located on the outer surface of the casing (1).

7. A portable signal generator according to claim 5, characterized in that: The inner cavity of the housing (1) is provided with a guide cross bar (411) parallel to the double-headed lead screw (46); the guide cross bar (411) passes through the left lead screw nut (47) and the right lead screw nut (48); the left lead screw nut (47) and the right lead screw nut (48) are both slidably connected to the guide cross bar (411).

8. A portable signal generator according to claim 1, characterized in that: The inner cavity of the housing (1) is divided into an installation cavity (12) and a control cavity (13) by a partition plate (11); the installation cavity (12) is located in front of the control cavity (13); the rotating shaft (31) extends into the control cavity (13); and the opening and closing control mechanism (4) is located inside the control cavity (13).

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