A kind of anti-dropping terminal

Abstract

The present invention provides an anti-falling terminal, comprising a male terminal and a female terminal, wherein the male terminal comprises a mounting seat and a rotating shell rotatably sleeved on the outer side of the mounting seat; the mounting seat is slidably plugged with the female terminal, and the rotating shell is threadedly sleeved with the female terminal; a ratchet is rotatably connected to the mounting seat, and a stop pawl meshed with the ratchet is hingedly connected, a constant force spring is connected between the ratchet and the rotating shell, and the stop pawl is used to limit the ratchet from rotating in the direction of releasing energy from the constant force spring, and when the constant force spring releases energy, the rotating shell has a tendency to rotate in the direction of being locked on the female terminal; a swing arm is also hingedly connected to the mounting seat, and a transmission pawl meshed with the ratchet is provided at the first end of the swing arm, and a limit ring slidably sleeved on the outer side of the wire of the male terminal is hingedly connected at the second end of the swing arm; when the swing arm swings back and forth, the swing arm can drive the ratchet to rotate in the direction of storing energy for the constant force spring through the transmission pawl. The present invention can prevent the male terminal from falling off from the female terminal due to the shaking of the wire.

Description

Technical Field

[0001] The invention relates to the technical field of electric wire connection, in particular to an anti-dropping connection terminal. Background Art

[0002] As an electrical accessory, the terminal block mainly includes male terminals and female terminals, which are used to connect wires to electrical equipment such as air pumps, electric push rods, batteries, etc., or to connect separate wires. Usually, the male terminal connects the wires and the female terminal is installed on the electrical equipment. The connection stability of the terminal block is crucial to the normal operation of the electrical equipment.

[0003] However, in some specific applications, such as terminals installed on vehicles such as cars, trains, and ships, or terminals installed at high altitudes, the wires connected to the male terminals will shake under the inertial force or wind force generated by the movement of the vehicle. The force generated by the shaking will be transmitted to the male terminal, causing the connection between the male terminal and the female terminal to loosen. Over time, it is easy for the male terminal to fall off from the female terminal, causing a circuit breaker accident of the terminal, seriously affecting the stability of the electrical connection. Summary of the invention

[0004] In order to overcome the deficiencies of the prior art, the present invention provides an anti-dropping connecting terminal, which can prevent the male terminal from falling off from the female terminal due to the shaking of the wire.

[0005] The present invention adopts the following technical solutions.

[0006] An anti-dropping connection terminal comprises a male terminal and a female terminal, wherein the male terminal comprises a mounting seat and a rotating shell rotatably sleeved on the outer side of the mounting seat;

[0007] The mounting seat is slidably plugged into the female terminal, and the rotating shell is threadedly sleeved into the female terminal;

[0008] The mounting seat is rotatably connected to a ratchet, and is hingedly provided with a stop pawl meshing with the ratchet. A constant force spring is connected between the ratchet and the rotating shell. The stop pawl is used to limit the ratchet from rotating in a direction that causes the constant force spring to release energy. When the constant force spring releases energy, the rotating shell has a tendency to rotate in a direction that is locked on the female terminal.

[0009] The mounting seat is also hinged with a swing arm, the first end of the swing arm is provided with a transmission claw engaged with the ratchet, and the second end of the swing arm is hinged with a limiting ring slidably sleeved on the outer side of the wire of the male terminal;

[0010] When the swing arm swings back and forth, the swing arm can drive the ratchet wheel to rotate in the direction of storing energy in the constant-force mainspring through the transmission claw.

[0011] Furthermore, a storage cavity and an injection channel that are connected to each other are formed on the mounting seat, the storage cavity is filled with compressed gas and fire extinguishing dry powder, and the injection channel extends along the plugging direction of the mounting seat and the female terminal;

[0012] The mounting seat is provided with a control valve assembly capable of opening or closing the injection channel.

[0013] Furthermore, the control valve assembly includes a valve plate rotatably connected to a mounting seat, an injection hole is provided on the valve plate, and a first memory metal part is connected between the valve plate and the mounting seat. When the first memory metal part is deformed, it can drive the valve plate to rotate so that the injection hole is aligned or staggered with the injection channel.

[0014] Further, the inner side wall of the rotating shell is formed with segmented internal threads;

[0015] The female terminal includes a positioning seat, an outer side wall of the positioning seat is formed with a positioning shoulder extending outward, and a plurality of receiving grooves are evenly opened along the circumference, a locking block is slidably connected in the receiving groove, and an outer wall of the locking block is formed with a segmented external thread adapted to the segmented internal thread, a second memory metal part is connected between the locking block and the positioning seat, and when the second memory metal part is deformed, it can drive the locking block to move so that the locking block protrudes from the outer side wall of the positioning seat or retracts into the receiving groove.

[0016] Furthermore, the storage cavity is arranged between the mounting seat and the rotating shell, and the inner side wall of the rotating shell is evenly distributed with a plurality of stirring rods extending into the storage cavity.

[0017] Furthermore, the rotating shell includes a first shell and a second shell rotatably sleeved on the outside of the first shell, the second shell is threadedly connected to the female terminal, and a linkage structure is provided between the first shell and the second shell, and the linkage structure enables the first shell and the second shell to be connected as a whole or rotate relative to each other.

[0018] Furthermore, the linkage structure includes a plurality of spring sheets evenly distributed along the circumference of the first shell, the first end of the spring sheet is integrally connected to the outer wall of the first shell, the second end of the spring sheet is integrally connected to a locking block, a slope is provided on one side of the locking block, and the inner wall of the second shell is evenly provided with a plurality of locking grooves that engage with the locking block along its circumference.

[0019] Furthermore, an elastic airbag is provided in the locking groove, a blowing channel connected to the elastic airbag is opened on the second shell, a plurality of heat dissipation fins are provided on the outer wall of the second shell, the blowing channel is aligned with the heat dissipation fins, and the heat dissipation fins extend along the airflow direction of the blowing channel.

[0020] The beneficial effects of the present invention are:

[0021] In the assembled state, the mounting base of the male terminal is slidably plugged into the female terminal, and the rotating shell of the male terminal is threadedly sleeved with the female terminal, thereby connecting the male terminal and the female terminal into a whole. When the wire connected to the male terminal shakes, the wire will drive the swing arm to swing through the limit ring. The swinging swing arm will drive the ratchet to rotate in the direction of storing energy in the constant force spring through the transmission claw, thereby storing energy in the constant force spring. After storing energy, the constant force spring has a tendency to release energy, given that the stop claw limits the rotation of the ratchet in the direction of releasing energy in the constant force spring, and the constant force spring after energy storage has a tendency to rotate in the direction of being locked on the female terminal. In this way, when the rotating shell and the female terminal are loosened due to the shaking of the wire, the potential energy stored in the constant force spring due to the shaking of the wire will immediately drive the rotating shell to be re-locked on the female terminal, thereby preventing the male terminal from falling off from the female terminal due to the shaking of the wire.

[0022] In addition, if the male terminal is regarded as a fulcrum and the wire connected to the male terminal is regarded as falling naturally, according to the force arm calculation formula, the kinetic energy of the cable is greater the farther away from the fulcrum. The present invention extends the distance from the ratchet to the power point on the wire through the swing arm, so that the ratchet can receive the kinetic energy generated by the shaking of the wire to a greater extent. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0024] Figure 1 Schematic diagram of the overall structure of this embodiment;

[0025] Figure 2 for Figure 1 AA section view;

[0026] Figure 3 for Figure 1 BB section view;

[0027] Figure 4 for Figure 1 CC section view;

[0028] Figure 5 is a schematic structural diagram of the male terminal of this embodiment;

[0029] Figure 6 for Figure 5 A magnified view of the D portion;

[0030] Figure 7 Schematic diagram of the structure of the female terminal of this embodiment.

[0031] Description of reference numerals:

[0032] Male terminal 1,

[0033] Storage chamber 1a, injection channel 1b,

[0034] Mounting seat 11, rotating shell 12, ratchet 13, stop claw 14, constant force spring 15, swing arm 16, transmission claw 17, limit ring 18, stirring rod 19,

[0035] Segmented internal thread 12a,

[0036] The first shell 121, the second shell 122,

[0037] Female terminal 2,

[0038] Positioning seat 21, positioning shoulder 22, locking block 23, second memory metal piece 24,

[0039] Receiving groove 21a, segmented external thread 23a,

[0040] Valve plate 31, injection hole 31a, first memory metal member 32,

[0041] Spring sheet 51, locking block 52, locking groove 53,

[0042] Elastic airbag 61 , blowing channel 61 a , heat dissipation fins 62 . DETAILED DESCRIPTION

[0043] The drawings are only used for illustrative purposes and should not be construed as limitations of this patent. In order to better illustrate this embodiment, some parts of the drawings may be omitted, enlarged, or reduced, and do not represent the size of the actual product.

[0044] For those skilled in the art, it is understandable that some well-known structures and their descriptions may be omitted in the drawings. The technical solution of the present invention is further described below in conjunction with the drawings and embodiments.

[0045] As shown in the accompanying drawings, an anti-dropping terminal comprises a male terminal 1 and a female terminal 2, wherein the male terminal 1 comprises a mounting seat 11 and a rotating shell 12 rotatably sleeved on the outer side of the mounting seat 11;

[0046] The mounting seat 11 is slidably plugged into the female terminal 2, and the rotating shell 12 is threadedly sleeved into the female terminal 2;

[0047] A ratchet 13 is rotatably connected to the mounting seat 11, and a stop pawl 14 is hingedly engaged with the ratchet 13. A constant force spring 15 is connected between the ratchet 13 and the rotating shell 12. The stop pawl 14 is used to limit the ratchet 13 from rotating in a direction that causes the constant force spring 15 to release energy. When the constant force spring 15 releases energy, the rotating shell 12 tends to rotate in a direction that is locked on the female terminal 2.

[0048] The mounting base 11 is also hinged with a swing arm 16, the first end of which is provided with a transmission claw 17 meshing with the ratchet 13, and the second end of the swing arm 16 is hinged with a limit ring 18 slidably sleeved on the outer side of the wire of the male terminal 1;

[0049] When the swing arm 16 swings back and forth, the swing arm 16 can drive the ratchet wheel 13 to rotate in the direction of storing energy in the constant-force mainspring 15 through the transmission claw 17 .

[0050] It is understandable that if the male terminal 1 is regarded as a fulcrum and the wire connected to the male terminal 1 is regarded as falling naturally, according to the force arm calculation formula, the kinetic energy of the cable is greater the farther away from the fulcrum. Therefore, in this embodiment, the distance from the ratchet 13 to the power point on the wire is extended by the swing arm 16, so that the ratchet 13 can receive the kinetic energy generated by the shaking of the wire to a greater extent.

[0051] Specifically, in the assembled state, the mounting base 11 of the male terminal 1 is slidably plugged with the female terminal 2, and the rotating shell 12 of the male terminal 1 is threadedly sleeved with the female terminal 2, so that the male terminal 1 and the female terminal 2 are connected as a whole. Among them, the counterclockwise rotation direction is the direction in which the rotating shell 12 is locked on the female terminal 2. When the wire connected to the male terminal 1 shakes, the wire will drive the swing arm 16 to swing through the limit ring 18. The swinging swing arm 16 will drive the ratchet 13 to rotate in the counterclockwise direction through the transmission claw 17, so that the constant force spring 15 is tightened to store energy. The tightened constant force spring 15 has a tendency to relax to release energy, and given that the stop claw 14 limits the rotation of the ratchet 13 in the clockwise direction, and the tightened constant force spring 15 makes the rotating shell 12 have a tendency to rotate in the counterclockwise direction. In this way, when the rotating shell 12 and the female terminal 2 are loosened due to the shaking of the wire, the potential energy stored in the constant force spring 15 due to the shaking of the wire will immediately drive the rotating shell 12 to rotate counterclockwise, so that the rotating shell 12 is re-locked on the female terminal 2, thereby effectively preventing the male terminal 1 from falling off from the female terminal 2 due to the shaking of the wire.

[0052] As we all know, after long-term use, the terminal blocks are prone to aging, poor contact, reduced sealing, and other problems, which will increase the heat generated by the terminal blocks, thereby reducing the conductive efficiency of the terminal blocks at the least, and may even cause the terminal blocks to catch fire. Once the terminal blocks catch fire, the fire is likely to spread to nearby electrical equipment, causing huge economic losses.

[0053] To solve the above problem, preferably, a storage cavity and an injection channel 1b that are connected to each other are formed on the mounting seat 11, the storage cavity is filled with compressed gas and fire extinguishing dry powder, and the injection channel 1b extends along the plugging direction of the mounting seat 11 and the female terminal 2;

[0054] The mounting seat 11 is provided with a control valve assembly capable of opening or closing the injection channel 1 b.

[0055] As an example, the control valve assembly includes a valve plate 31 rotatably connected to the mounting seat 11, an injection hole 31a is opened on the valve plate 31, and a first memory metal part 32 is connected between the valve plate 31 and the mounting seat 11. When the first memory metal part 32 is deformed, it can drive the valve plate 31 to rotate so that the injection hole 31a is aligned or staggered with the injection channel 1b.

[0056] Specifically, when the terminal block operates normally, the temperature of the mounting base 11 is lower than the set threshold, the temperature of the first memory metal part 32 does not reach the predetermined deformation temperature, and it does not deform. The injection hole 31a on the valve plate 31 is offset from the injection channel 1b, and the injection channel 1b is closed.

[0057] Once the temperature of the mounting base 11 reaches the set threshold, indicating that a fire may occur at the terminal, the temperature of the first memory metal piece 32 at this time reaches the predetermined deformation temperature, the first memory metal piece 32 deforms and drives the valve plate 31 to rotate, so that the injection hole 31a on the valve plate 31 is aligned with the injection channel 1b. Then, the compressed gas in the storage chamber 1a is ejected from the injection channel 1b with the fire extinguishing dry powder to extinguish the fire on the terminal and prevent the fire from spreading to nearby electrical equipment.

[0058] When the terminal blocks catch fire, the male terminal 1 and the female terminal 2 need to be separated as quickly as possible to cut off the current and eliminate the energy supply of the fire. To this end, preferably, the inner side wall of the rotating shell 12 is formed with segmented internal threads 12a;

[0059] The female terminal 2 includes a positioning seat 21, an outer side wall of the positioning seat 21 is formed with a positioning shoulder 22 extending outward, and a plurality of receiving grooves 21a are evenly opened along the circumferential direction, a locking block 23 is slidably connected in the receiving groove 21a, and an outer wall of the locking block 23 is formed with a segmented external thread 23a adapted to the segmented internal thread 12a, a second memory metal part 24 is connected between the locking block 23 and the positioning seat 21, and when the second memory metal part 24 is deformed, it can drive the locking block 23 to move, so that the locking block 23 protrudes from the outer side wall of the positioning seat 21 or retracts into the receiving groove 21a.

[0060] Specifically, when the terminal block operates normally, the temperature of the positioning seat 21 is lower than the set threshold, and the temperature of the second memory metal piece 24 does not reach the predetermined deformation temperature, and the second memory metal piece 24 does not deform. In this case, the locking block 23 is supported by the second memory metal piece 24 and protrudes from the outer wall of the positioning seat 21, the segmented internal thread 12a on the rotating shell 12 is engaged with the segmented external thread 23a on the locking block 23, and the front end of the rotating shell 12 is pressed against the positioning shoulder 22, so that the male terminal 1 and the female terminal 2 are connected as a whole.

[0061] Once the temperature of the positioning seat 21 reaches the set threshold, it indicates that a fire may occur in the terminal block. At this time, the temperatures of the first memory metal piece 32 and the second memory metal piece 24 both reach the predetermined deformation temperature. The first memory metal piece 32 deforms and drives the valve plate 31 to rotate, the injection channel 1b is opened, and the compressed gas in the storage chamber 1a is ejected along the plug-in direction of the mounting seat 11 and the female terminal 2, generating a reverse thrust on the mounting seat 11. In addition, the second memory metal piece 24 deforms and causes the locking block 23 to retract into the storage groove 21a, and the rotating shell 12 loses the restriction of the locking block 23. Therefore, under the reverse thrust of the gas ejected from the injection channel 1b, the male terminal 1 moves in a direction away from the female terminal 2, so that the male terminal 1 and the female terminal 2 are quickly separated.

[0062] Preferably, the storage chamber 1a is arranged between the mounting seat 11 and the rotating shell 12, and the inner side wall of the rotating shell 12 is evenly distributed with a plurality of stirring rods 19 extending into the storage chamber 1a. As mentioned above, when the compressed gas in the storage chamber 1a is ejected from the injection channel 1b, the rotating shell 12 loses the restriction of the locking block 23, and the constant force spring 15 drives the rotating shell 12 to rotate. The stirring rods 19 on the rotating shell 12 then stir the fire extinguishing dry powder in the storage chamber 1a, improve its fluidity, make it easier to follow the airflow, and thus improve the injection efficiency and fire extinguishing effect of the fire extinguishing dry powder.

[0063] In order to prevent the constant force spring 15 from overwinding, preferably, the rotating shell 12 includes a first shell 121, and a second shell 122 rotatably sleeved on the outside of the first shell 121, the stirring rod 19 is arranged on the inner wall of the first shell 121, the segmented internal thread 12a is arranged on the inner wall of the second shell 122, the second shell 122 is threadedly connected to the female terminal 2, and a linkage structure is provided between the first shell 121 and the second shell 122, and the linkage structure enables the first shell 121 and the second shell 122 to be connected as a whole or rotate relative to each other. In the assembled state, the second shell 122 is locked with the positioning seat 21 and cannot rotate. Before the constant force spring 15 is tightened to the limit state, the linkage structure locks the first shell 121 and the second shell 122 together on the positioning seat 21, and at this time, the ratchet 13 rotates counterclockwise to continue to tighten the constant force spring 15. After the constant force spring 15 is tightened to the limit state, if the swing arm 16 continues to drive the ratchet 13 to rotate counterclockwise, since the second housing 122 is locked with the positioning seat 21, the linkage structure will cause the first housing 121 and the second housing 122 to rotate relative to each other, thereby preventing the spring from continuing to tighten. In addition, during the relative rotation of the first housing 121 and the second housing 122, the stirring rod 19 of the first housing 121 will stir the fire extinguishing dry powder in the storage chamber, which is beneficial to prevent the fire extinguishing dry powder from caking due to being left still during storage.

[0064] Preferably, the linkage structure includes a plurality of spring sheets 51 uniformly distributed along the circumference of the first housing 121, the first end of the spring sheet 51 is integrally connected to the outer wall of the first housing 121, the second end of the spring sheet 51 is integrally connected to a locking block 52, a slope is provided on one side of the locking block 52, and a plurality of locking grooves 53 that engage with the locking block 52 are uniformly provided on the inner wall of the second housing 122 along its circumference. It can be understood that, under the premise that the second housing 122 is locked with the positioning seat 21, before the constant force spring 15 is tightened to the limit state, the torsion of the constant force spring 15 on the first housing 121 is not enough to overcome the elastic force of the spring sheet 51, and the locking block 52 cannot withdraw from the locking groove 53, so that the first housing 121 and the second housing 122 are connected as a whole. After the constant force spring 15 is tightened to the limit state, the torque of the constant force spring 15 on the first housing 121 is sufficient to overcome the elastic force of the spring sheet 51. At this time, if the swing arm 16 continues to drive the ratchet 13 to rotate counterclockwise, the locking block 52 will exit the locking groove 53, causing the first housing 121 and the second housing 122 to rotate relative to each other.

[0065] Preferably, an elastic airbag 61 is provided in the locking groove 53, a blowing channel 61a connected to the elastic airbag 61 is provided on the second shell 122, and a plurality of heat dissipation fins 62 are provided on the outer wall of the second shell 122, and the heat dissipation fins 62 can dissipate the heat of the terminal block into the atmosphere, thereby cooling the terminal block, and the blowing channel 61a is aligned with the heat dissipation fins 62, and the heat dissipation fins 62 extend along the air flow direction of the blowing channel 61a. It can be understood that for any locking groove 53, when the locking block 52 withdraws from the locking groove 53, the elastic airbag 61 in the locking groove 53 expands under the action of its own elastic force, thereby inhaling air. Then, when the locking block 52 is re-embedded in the locking groove 53, the elastic airbag 61 in the locking groove 53 is compressed, and the air in the elastic airbag 61 is blown toward the heat dissipation fins 62 through the blowing channel 61a. This not only speeds up the air flow near the heat dissipation fins 62 and improves the heat dissipation efficiency, but also blows away the dust attached to the heat dissipation fins 62, preventing the heat dissipation performance of the heat dissipation fins 62 from being reduced due to dust accumulation.

[0066] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the embodiments here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. An anti-dropping terminal, comprising a male terminal and a female terminal, characterized in that: The male terminal comprises a mounting seat and a rotating shell rotatably sleeved on the outer side of the mounting seat; The mounting seat is slidably plugged into the female terminal, and the rotating shell is threadedly sleeved into the female terminal; The mounting seat is rotatably connected to a ratchet, and is hingedly provided with a stop pawl meshing with the ratchet. A constant force spring is connected between the ratchet and the rotating shell. The stop pawl is used to limit the ratchet from rotating in a direction that causes the constant force spring to release energy. When the constant force spring releases energy, the rotating shell has a tendency to rotate in a direction that is locked on the female terminal. The mounting seat is also hinged with a swing arm, the first end of the swing arm is provided with a transmission claw engaged with the ratchet, and the second end of the swing arm is hinged with a limiting ring slidably sleeved on the outer side of the wire of the male terminal; When the swing arm swings back and forth, the swing arm can drive the ratchet wheel to rotate in the direction of storing energy in the constant-force mainspring through the transmission claw.

2. The anti-dropping terminal according to claim 1, characterized in that: The mounting seat is formed with a storage cavity and an injection channel which are connected to each other, the storage cavity is filled with compressed gas and fire extinguishing dry powder, and the injection channel extends along the plugging direction of the mounting seat and the female terminal; The mounting seat is provided with a control valve assembly capable of opening or closing the injection channel.

3. The anti-dropping terminal according to claim 2, characterized in that: The control valve assembly includes a valve plate rotatably connected to a mounting seat, an injection hole is provided on the valve plate, and a first memory metal part is connected between the valve plate and the mounting seat. When the first memory metal part is deformed, it can drive the valve plate to rotate so that the injection hole is aligned or staggered with the injection channel.

4. The anti-dropping terminal according to claim 2, characterized in that: The inner side wall of the rotating shell is formed with segmented internal threads; The female terminal includes a positioning seat, an outer side wall of the positioning seat is formed with a positioning shoulder extending outward, and a plurality of receiving grooves are evenly opened along the circumference, a locking block is slidably connected in the receiving groove, and an outer wall of the locking block is formed with a segmented external thread adapted to the segmented internal thread, a second memory metal part is connected between the locking block and the positioning seat, and when the second memory metal part is deformed, it can drive the locking block to move so that the locking block protrudes from the outer side wall of the positioning seat or retracts into the receiving groove.

5. The anti-dropping terminal according to claim 2 or 4, characterized in that: The storage cavity is arranged between the mounting seat and the rotating shell, and the inner side wall of the rotating shell is evenly distributed with a plurality of stirring rods extending into the storage cavity.

6. The anti-dropping terminal according to claim 5, characterized in that: The rotating shell includes a first shell and a second shell rotatably sleeved on the outside of the first shell, the second shell is threadedly connected to the female terminal, and a linkage structure is provided between the first shell and the second shell, and the linkage structure enables the first shell and the second shell to be connected as a whole or to rotate relative to each other.

7. The anti-dropping terminal according to claim 6, characterized in that: The linkage structure includes a plurality of spring sheets evenly distributed along the circumference of the first shell, the first end of the spring sheet is integrally connected to the outer wall of the first shell, the second end of the spring sheet is integrally connected to a locking block, a slope is provided on one side of the locking block, and the inner wall of the second shell is evenly provided with a plurality of locking grooves engaged with the locking block along its circumference.

8. The anti-dropping terminal according to claim 7, characterized in that: An elastic airbag is provided in the locking groove, a blowing channel connected to the elastic airbag is opened on the second shell, a plurality of heat dissipation fins are provided on the outer side wall of the second shell, the blowing channel is aligned with the heat dissipation fins, and the heat dissipation fins extend along the airflow direction of the blowing channel.

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