Four-channel CMOS analog multiplexer

Abstract

The utility model discloses a four-channel CMOS analog multiplexer, which comprises a casing and a four-channel multiplexer main body, two sides of the inner side of the casing are provided with mounting grooves, two sides of the four-channel multiplexer main body are provided with mounting blocks, the middle parts of the sides, far away from each other, of the two groups of mounting blocks are provided with slots, and the two groups of mounting blocks are inserted into the slots. Guide grooves are formed in the middles of the sides, away from each other, of the inner sides of the two mounting grooves. According to the utility model, through the mutual cooperation of the pull rod, the gear, the mounting groove, the slot, the mounting block, the guide groove, the wedge-shaped insertion rods, the spring and the rack, when the device is used for dismounting and overhauling the four-channel multiplexer main body, an operator only needs to pull any one group of pull plates with one hand, so that the two groups of wedge-shaped insertion rods can be synchronously driven to be pulled out of the slot; the fixation of the four-channel multiplexer main body is released, and then the other hand can pull out the four-channel multiplexer main body from the casing, so that the disassembly operation is more convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of multiplexers, in particular to a four-channel CMOS analog multiplexer. Background Art

[0002] A multiplexer is a comprehensive system that usually contains a certain number of data inputs and n address inputs. The multiplexer has a single output that is the same as the selected data input value. The multiplexing technology may follow one of the following principles, such as: TDM, FDM, CDM or WDM. Multiplexing technology is also used in software operations. Multiplexers are needed in CMOS analog circuits;

[0003] The existing patent with the authorization announcement number "CN218728229U" discloses a wavelength division multiplexer. Compared with the existing common wavelength division multiplexer, the wavelength division multiplexer can be installed by connecting the card slot and the buckle, and then the pin rod 2 is fixed in the groove by the spring 2 and the telescopic rod 1, and then the positioning block 1 is subjected to force, and the pin rod 2 is pushed out of the groove by the pin rod 1, so as to quickly disassemble and install, which effectively improves the efficiency of operators when repairing the multiplexer;

[0004] However, there are the following deficiencies in this device:

[0005] 1. When disassembling and repairing the multiplexer, the device needs to press two sets of pins at the same time to release the fixation of the multiplexer body. As a result, when disassembling, one person cannot pull out the multiplexer body by pressing the pins with both hands, and it is difficult to press two pins with one hand at the same time, making disassembly more difficult;

[0006] 2. When the multiplexer is in use, heat is generated. The heat dissipation capacity of the above-mentioned device is poor, and the heat generated by the multiplexer is difficult to dissipate quickly, causing the multiplexer to be easily damaged by high temperature, thereby reducing its service life. Utility Model Content

[0007] The purpose of the utility model is to provide a four-channel CMOS analog multiplexer to solve the existing problems raised in the above background technology.

[0008] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a four-channel CMOS analog multiplexer, comprising a housing and a four-channel multiplexer body, mounting grooves are provided on both sides of the inner side of the housing, mounting blocks are provided on both sides of the four-channel multiplexer body, slots are provided in the middle of the two groups of mounting blocks on the side away from each other, guide grooves are provided in the middle of the two groups of mounting grooves on the side away from each other, wedge-shaped rods matching the slots are sleeved on the inner sides of the two groups of guide grooves, springs are sleeved on the outer sides of the two groups of wedge-shaped rods, pull plates are provided on the side away from each other of the two groups of wedge-shaped rods, gears are sleeved in the middle of the bottom of the housing, pull rods are sleeved in the middle of the bottom of both sides of the housing, racks meshing with gears are provided on the side close to the two groups of pull rods, and the side away from each other of the two groups of pull rods is connected to the pull plate;

[0009] The top and bottom of the inner side of the casing are evenly provided with multiple groups of partition bars, the top and bottom of the casing are evenly provided with multiple groups of heat dissipation holes, exhaust ports are provided on both sides of one end of the inner side of the casing, and cooling fans are provided inside the two groups of exhaust ports.

[0010] Preferably, a limit block is provided on one side of the outer side of the wedge-shaped rod, and the spring is connected to the limit block, and the movable range of the wedge-shaped rod can be limited by the limit block, and the spring can apply elastic force to the wedge-shaped rod through the limit block.

[0011] Preferably, the spacers and the heat dissipation holes are distributed in a staggered manner to facilitate heat dissipation.

[0012] Preferably, a handle is provided on the side away from the pull plate to facilitate the operator's operation during disassembly.

[0013] Preferably, a limiting sleeve cooperating with the pull rod is provided in the middle of both sides of the bottom of the housing to guide the pull rod and improve its stability.

[0014] Preferably, the cross-sectional shape of the mounting block is dovetail-shaped, and the mounting groove is matched with the mounting block, which can limit the up, down, left, and right movements of the four-channel multiplexer body, thereby improving the fixing effect of the four-channel multiplexer body.

[0015] Compared with the prior art, the beneficial effects of the utility model are: the four-channel CMOS analog multiplexer;

[0016] 1. Through the cooperation between the pull rod, gear, mounting groove, slot, mounting block, guide groove, wedge-shaped rod, spring and rack, when the device disassembles and repairs the main body of the four-channel multiplexer, the operator only needs to pull any set of pull plates with one hand to simultaneously drive the two sets of wedge-shaped rods to be pulled out from the slot, thereby releasing the fixation of the main body of the four-channel multiplexer. Then the other hand can pull the main body of the four-channel multiplexer out of the casing, making the disassembly operation more convenient. After the maintenance is completed, the mounting block is aligned with the mounting groove and inserted into the specified position, so that the fixation of the main body of the four-channel multiplexer can be automatically completed, thereby improving the convenience of loading and unloading;

[0017] 2. Through the cooperation between the casing, the heat dissipation holes, the spacers and the heat dissipation fan, when the device is in use, the heat dissipation fan can drive the air flow in the casing, and a plurality of flow channels can be formed through the intervals between the spacers, so that when the heat dissipation fan is running, the air flow can enter the flow channel from the heat dissipation holes, and the various parts of the four-channel multiplexer body are blown and cooled, thereby improving the heat dissipation effect of the device and reducing the probability of damage to the four-channel multiplexer body. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a three-dimensional diagram of the utility model;

[0019] Figure 2 This is a front cross-sectional view of the utility model;

[0020] Figure 3 It is a top sectional view of the utility model;

[0021] Figure 4 It is a bottom sectional view of the utility model;

[0022] Figure 5 For the utility model Figure 2 A schematic diagram of the enlarged structure of .

[0023] In the figure: 1. housing; 2. heat dissipation holes; 3. spacers; 4. pull plates; 5. pull rods; 6. gears; 7. main body of the four-channel multiplexer; 8. mounting grooves; 9. slots; 10. mounting blocks; 11. guide grooves; 12. wedge-shaped rods; 13. springs; 14. exhaust vents; 15. racks; 16. cooling fans. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] See also Figure 1-5 The utility model provides an embodiment: a four-channel CMOS analog multiplexer, including a housing 1 and a four-channel multiplexer body 7. The housing 1 has mounting grooves 8 on both sides of the inner side. The four-channel multiplexer body 7 has mounting blocks 10 on both sides. The cross-sectional shape of the mounting block 10 is dovetail-shaped. The mounting grooves 8 are matched with the mounting blocks 10, which can limit the four-channel multiplexer body 7 from moving up and down and left and right, thereby improving the fixing effect of the four-channel multiplexer body 7. A slot 9 is opened in the middle of one side away from the two sets of mounting blocks 10. The two sets of mounting grooves 8 are provided on the two sides of the housing 1. A guide groove 11 is provided in the middle of the inner side away from the inner side, and a wedge-shaped rod 12 matching the slot 9 is sleeved on the inner side of the two groups of guide grooves 11, and a spring 13 is sleeved on the outer side of the two groups of wedge-shaped rods 12, and a pull plate 4 is provided on the side away from the two groups of wedge-shaped rods 12, and a handle is provided on the side away from the pull plate 4 to facilitate the operator to operate during disassembly, and a gear 6 is sleeved in the middle of the bottom of the casing 1, and a pull rod 5 is sleeved in the middle of the bottom of both sides of the casing 1, and a rack 15 meshing with the gear 6 is provided on the side close to the two groups of pull rods 5, and the side away from the two groups of pull rods 5 is connected to the pull plate 4;

[0026] Multiple groups of partition bars 3 are evenly arranged on the top and bottom of the inner side of the casing 1, multiple groups of heat dissipation holes 2 are evenly opened on the top and bottom of the casing 1, exhaust ports 14 are opened on both sides of one end of the inner side of the casing 1, and cooling fans 16 are arranged inside the two groups of exhaust ports 14.

[0027] Furthermore, a limit block is provided on one side of the outer side of the wedge-shaped rod 12, and the spring 13 is connected to the limit block. The movable range of the wedge-shaped rod 12 can be limited by the limit block, and the spring 13 can apply elastic force to the wedge-shaped rod 12 through the limit block.

[0028] Furthermore, the partition bars 3 and the heat dissipation holes 2 are distributed in a staggered manner, and a plurality of flow channels can be formed through the intervals between the partition bars 3 , and the air flow can enter the flow channels through the heat dissipation holes 2 .

[0029] Furthermore, limiting sleeves matching with the pull rod 5 are provided at the middle of both sides of the bottom of the housing 1 to guide the pull rod 5 and improve its stability.

[0030] Working principle: When the device is in use, multiple flow channels can be formed through the intervals between the spacers 3. When the heat dissipation fan 16 is started, the air flow can be driven to enter the flow channel through the heat dissipation holes 2 and flow through the outside of the four-channel multiplexer body 7, blowing air to dissipate heat for various parts of the four-channel multiplexer body 7, thereby improving the heat dissipation performance of the device;

[0031] When the four-channel multiplexer body 7 needs to be disassembled for maintenance, the operator can pull the pull plate 4 with one hand through the handle, and then the pull plate 4 can drive a group of pull rods 5 to move, and through a group of pull rods 5 to drive the rack 15, the engagement of the gear 6 with the rack 15 can drive another group of racks 15 to move in the opposite direction, thereby pushing the other group of pull plates 4 to move, and the two groups of wedge-shaped rods 12 can be pulled out of the slot 9 to overcome the elastic force of the spring 13 at the same time, so as to release the fixation of the four-channel multiplexer body 7, and then the other hand can pull the four-channel multiplexer body 7 to remove the four-channel multiplexer body 7 from the casing 1 for maintenance. After the maintenance is completed, the mounting blocks 10 on both sides of the four-channel multiplexer body 7 are inserted into the mounting grooves 8. After being pushed to the specified position, the two groups of wedge-shaped rods 12 can be automatically inserted into the slot 9 to fix the four-channel multiplexer body 7 again.

[0032] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

[0033] In the description of the present invention, unless otherwise specified, "multiple" means two or more; the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third" and the like are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0034] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

Claims

1. A four-channel CMOS analog multiplexer, comprising a housing (1) and a four-channel multiplexer body (7), characterized in that: The housing (1) is provided with mounting grooves (8) on both sides of the inner side, the four-channel multiplexer body (7) is provided with mounting blocks (10) on both sides, a slot (9) is provided in the middle of the two groups of mounting blocks (10) on the side away from each other, a guide groove (11) is provided in the middle of the two groups of mounting grooves (8) on the side away from each other, the inner sides of the two groups of guide grooves (11) are sleeved with wedge-shaped rods (12) matching with the slots (9), the outer sides of the two groups of wedge-shaped rods (12) are sleeved with springs (13), the two groups of wedge-shaped rods (12) are provided with pull plates (4) on the side away from each other, the middle part of the bottom of the housing (1) is sleeved with a gear (6), the middle part of the bottom of both sides of the housing (1) is sleeved with pull rods (5), the two groups of pull rods (5) are provided with racks (15) meshing with the gear (6) on the side close to each other, and the two groups of pull rods (5) are connected to the pull plate (4) on the side away from each other; A plurality of groups of partition bars (3) are evenly arranged at the top and bottom of the inner side of the casing (1), a plurality of groups of heat dissipation holes (2) are evenly opened at the top and bottom of the casing (1), exhaust ports (14) are opened on both sides of one end of the inner side of the casing (1), and heat dissipation fans (16) are arranged inside the two groups of exhaust ports (14).

2. The four-channel CMOS analog multiplexer according to claim 1, characterized in that: A limit block is provided on one side of the outer side of the wedge-shaped inserting rod (12), and the spring (13) is connected to the limit block.

3. The four-channel CMOS analog multiplexer according to claim 1, characterized in that: The spacers (3) and the heat dissipation holes (2) are distributed in a staggered manner.

4. The four-channel CMOS analog multiplexer according to claim 1, characterized in that: A handle is provided on the side away from the pull plate (4).

5. The four-channel CMOS analog multiplexer according to claim 1, characterized in that: Position limiting sleeves matching with the pull rod (5) are provided in the middle of both sides of the bottom of the casing (1).

6. The four-channel CMOS analog multiplexer according to claim 1, characterized in that: The cross-sectional shape of the mounting block (10) is a dovetail shape, and the mounting groove (8) is adapted to the mounting block (10).

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