Moxa stick telescopic adjusting device and temperature-adjustable moxibustion pen

Abstract

The utility model relates to a moxa stick stretching and retracting adjusting device and a temperature-adjustable moxibustion pen, the moxa stick stretching and retracting adjusting device comprises an adjusting seat, an adjusting knob and an elastic sheet, a first through hole is formed in the adjusting seat in a hollow penetrating mode, an adjusting hole is formed in the side wall of the first through hole in a penetrating mode, a clamping groove is formed in the side wall of the first through hole, and the adjusting hole and the clamping groove are oppositely arranged; the adjusting knob is in abutting connection with the side wall of the moxa stick arranged in the first through hole, the adjusting knob is rotationally arranged in the adjusting hole, and the adjusting knob is tangent to the moxa stick; the elastic piece is used for pushing the moxa stick arranged in the first through hole in an abutting mode, and the elastic piece is arranged in the clamping groove. According to the moxa stick stretching and retracting adjusting device, the stretching length of the moxa stick can be adjusted through the adjusting knob, and therefore the temperature of moxibustion is adjusted. The moxibustion pen disclosed by the utility model has a temperature adjusting function, and can adjust the extension length of the moxibustion contained in the main body pipe sleeve, so that the temperature of a human body is adjusted, the temperature can be conveniently adjusted according to different illness states or conditions, and the practicability is good.

Description

Technical Field

[0001] The utility model relates to the technical field of moxibustion equipment, in particular to a moxa stick telescopic adjustment device and a temperature-adjustable moxibustion pen. Background Art

[0002] Moxibustion is a traditional Chinese medical treatment and fitness method. It is achieved by lighting moxa cones and moxa sticks made of moxa leaves to fumigate the acupuncture points of the human body, and to apply heat and the effective ingredients of the medicine to the human meridian system to achieve the effects of health care and curing diseases.

[0003] Most of the current moxibustion devices fix a burning moxa stick in a moxibustion seat, and this type of moxibustion device cannot move the moxa stick. As the moxa stick burns, its length becomes shorter, which reduces the temperature on the human body and causes a decrease in effectiveness. The adjustment effect has no effect or may even be ineffective.

[0004] Chinese patent CN206102961U discloses a moxibustion stick, including a handle and a barrel connected to one end of the handle, the moxibustion stick includes a connecting end cap, a bearing and a connecting ring, the handle is provided with a vent hole axially through the two ends of the handle, the connecting end cap is fixedly connected to the end face of the handle, the inner ring of the bearing is fixedly sleeved on the outer periphery of the connecting end cap, the connecting ring is fixedly sleeved on the outer periphery of the outer ring of the bearing, and the barrel is detachably connected to the connecting ring. The moxibustion stick with a massage effect of the utility model has a simple structure, and the barrel can be rotated at the same time during moxibustion therapy, and has a massage effect. The above-mentioned moxa stick is fixed by a moxa stick fixing member such as a screw, and the moxa stick cannot be moved after fixing, so the moxibustion temperature will decrease as the moxibustion time increases, thereby affecting the moxibustion effect. If the moxa stick is brought close to the human skin to increase the moxibustion time, the temperature will be too high and burn the skin. Therefore, a technical solution to the above-mentioned problem is urgently needed. Utility Model Content

[0005] Based on this, the utility model provides a moxa stick extension and retraction adjustment device, which can adjust the extension length of the moxa stick by adjusting the knob, thereby adjusting the temperature of moxibustion, and is easy to use.

[0006] In order to achieve the purpose of the utility model, the utility model adopts the following technical solutions:

[0007] A moxa stick telescopic adjustment device, comprising

[0008] The adjusting seat has a first through hole formed in the hollow part, an adjusting hole is formed in the side wall of the first through hole, a clamping groove is formed in the side wall of the first through hole, and the adjusting hole and the clamping groove are arranged opposite to each other;

[0009] An adjusting knob is connected to the side wall of the moxa stick installed in the first through hole, the adjusting knob is rotatably arranged in the adjusting hole, and the adjusting knob is arranged tangent to the moxa stick;

[0010] A shrapnel for pushing against an moxa stick installed in the first through-hole, and the shrapnel is installed in the card slot.

[0011] Wherein, a boss is provided in the first through-hole, the shrapnel includes a mounting portion and a pushing portion connected to the mounting portion, the mounting portion is clamped on the boss, and the pushing portion is clamped in the card slot.

[0012] Wherein, the pushing portion is of an inverted V-shaped structure.

[0013] Another object of the present invention is to provide a temperature-adjustable moxibustion pen that can adjust the protruding length of the moxa stick, thereby realizing the temperature of the moxa stick, avoiding scalding the skin due to excessive temperature, and also providing a suitable temperature to ensure the conditioning effect of moxibustion.

[0014] In order to achieve another object of the present invention, the present invention adopts the following technical solutions:

[0015] A temperature-adjustable moxibustion pen includes a main body sleeve and an adjusting device provided at one end of the main body sleeve. The main body sleeve is provided with a second through-hole that penetrates through it, and the second through-hole is communicated with the first through-hole. The adjusting device is the above-mentioned moxa stick telescopic adjusting device.

[0016] Wherein, the temperature-adjustable moxibustion pen further includes a first cap assembly provided at the end of the adjusting device away from the main body sleeve. The first cap assembly includes a shaft sleeve cover provided on the adjusting seat, a sleeve sleeved on the shaft sleeve cover, and a first end cap sleeved on the sleeve. The first end cap is rotatably connected to the sleeve. The first end cap is provided with a first strip-shaped ventilation hole, and the first strip-shaped ventilation hole is arranged around the first end cap in a rotating manner. The first end cap is provided with a first filter screen, and the first filter screen is installed in the first strip-shaped ventilation hole.

[0017] Wherein, the first cap assembly further includes a first magnetic ring and a second magnetic ring. The first magnetic ring is arranged on the sleeve, the second magnetic ring is arranged on the first end cap, and the first magnetic ring and the second magnetic ring attract each other.

[0018] Wherein, the temperature-adjustable moxibustion pen further includes a second cap assembly provided at the end of the main body sleeve away from the adjusting device. The second cap assembly includes a bottom cover that covers the second through-hole, and the outer side of the bottom cover is provided with anti-slip stripes.

[0019] Wherein, the second cap assembly further includes a second end cap provided on the bottom cover. The second end cap is provided with a second strip-shaped ventilation hole, and the second strip-shaped ventilation hole is arranged around the second end cap in a rotating manner.

[0020] Wherein, the second cap assembly further includes a third magnetic ring and a fourth magnetic ring. The third magnetic ring is arranged on the bottom cover, the fourth magnetic ring is arranged on the second end cap, and the third magnetic ring and the fourth magnetic ring attract each other.

[0021] Among them, the second end cap is provided with a second filter screen, and the second filter screen is installed in the second strip-shaped ventilation hole.

[0022] The beneficial effects of the present utility model are as follows: The moxa stick telescopic adjustment device of the present utility model can adjust the protruding length of the moxa stick, thereby adjusting the temperature of moxibustion, which is convenient to use. Specifically, the moxa stick is inserted into the adjustment seat through the first through hole, and the elastic pieces and the adjustment knob on both sides of the first through hole contact to clamp the moxa stick and keep it relatively fixed. Rotating the adjustment knob drives the moxa stick to move, so as to adjust the protruding length of the moxa stick.

[0023] The temperature-adjustable moxibustion pen of the present utility model is provided with an adjustment device, which can adjust the protruding length of the moxibustion inserted into the main body tube sleeve, so as to adjust the temperature of the human body, and is convenient to adjust the temperature according to different diseases or situations, and has good practicability. Specifically, the adjustment seat is hollow and provided with a first through hole, the moxa stick is inserted into the second through hole through the first through hole, the pushing part on the inner side wall of the first through hole contacts and pushes the side wall of the moxa stick, the adjustment knob is arranged on the other side wall of the moxa stick, and contacts and pushes the other side wall of the moxa stick. The elastic piece and the adjustment knob jointly push and clamp the moxa stick to fix it. When adjusting, rotate the adjustment knob, the adjustment knob rotates and drives the moxa stick to move, so as to adjust the moxa stick to protrude or retract, and further achieve the effect of adjusting the temperature.

[0024] The adjustment device of the present utility model has a simple structure, convenient operation and good practicability. Description of the Drawings

[0025] Figure 1 It is a schematic structural diagram of the moxa stick telescopic adjustment device of the present utility model.

[0026] Figure 2 It is a schematic structural diagram of the moxa stick telescopic adjustment device of the present utility model after hiding the elastic piece.

[0027] Figure 3 It is a schematic structural diagram of the elastic piece of the present utility model.

[0028] Figure 4 It is a schematic structural diagram of the temperature-adjustable moxibustion pen of the present utility model.

[0029] Figure 5 It is a schematic structural diagram of the temperature-adjustable moxibustion pen of the present utility model after hiding the moxa stick.

[0030] Figure 6 It is a schematic structural diagram of the temperature-adjustable moxibustion pen of another embodiment of the present utility model.

[0031] Figure 7 It is an exploded structural diagram of the temperature-adjustable moxibustion pen of the present utility model.

[0032] 1. Main body sleeve; 11. Second through hole; 2. Adjusting device; 21. Adjusting seat; 211. First through hole; 2111. Boss; 2112. Card slot; 212. Adjusting hole; 22. Elastic piece; 221. Installation part; 222. Pushing part; 23. Adjusting knob; 3. First cap assembly; 31. Bush cover; 32. Sleeve; 33. First end cap; 331. First strip-shaped ventilation hole; 332. First filter screen; 34. First magnetic ring; 35. Second magnetic ring; 4. Second cap assembly; 41. Bottom cover; 411. Anti-slip stripes; 42. Second end cap; 421. Second strip-shaped ventilation hole; 422. Second filter screen; 43. Third magnetic ring; 44. Fourth magnetic ring; 5. Moxa stick. Detailed implementation manner

[0033] To facilitate the understanding of the present utility model, the present utility model will be described more comprehensively below with reference to the relevant drawings. The preferred embodiments of the present utility model are shown in the drawings. However, the present utility model can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure content of the present utility model more thorough and comprehensive.

[0034] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or there may also be an intermediate element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time.

[0035] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field to which the present utility model belongs. The terms used in the specification of the present utility model herein are only for the purpose of describing specific embodiments and are not intended to limit the present utility model.

[0036] As Figures 1-3 shown, the moxa stick 5 telescopic adjusting device 2 of this embodiment includes an adjusting seat 21, an adjusting knob 23 and an elastic piece 22. The adjusting seat 21 is hollow and provided with a first through hole 211. The side wall of the first through hole 211 is provided with an adjusting hole 212. The side wall of the first through hole 211 is provided with a card slot 2112. The adjusting hole 212 and the card slot 2112 are arranged opposite to each other; the adjusting knob 23 is in contact connection with the side wall of the moxa stick 5 installed in the first through hole 211. The adjusting knob 23 is rotatably arranged in the adjusting hole 212, and the adjusting knob 23 is tangent to the moxa stick 5; the elastic piece 22 is used to push the moxa stick 5 installed in the first through hole 211, and the elastic piece 22 is installed in the card slot 2112.

[0037] The telescopic adjustment device 2 of the moxa stick 5 of the present utility model can adjust the protruding length of the moxa stick 5, thereby adjusting the temperature of moxibustion, which is convenient to use. Specifically, the moxa stick 5 is inserted into the adjustment base 21 through the first through hole 211. The elastic pieces 22 and the adjustment knob 23 located on both sides of the first through hole 211 contact to clamp the moxa stick 5 and keep it relatively fixed. Rotating the adjustment knob 23 drives the moxa stick 5 to move, so that the protruding length of the moxa stick 5 can be adjusted.

[0038] Please refer to Figure 1 and Figure 2 , the first through hole 211 of this embodiment is provided with a boss 2111. The elastic piece 22 includes a mounting portion 221 and a pushing portion 222 connected to the mounting portion 221. The mounting portion 221 is clamped on the boss 2111, and the pushing portion 222 is clamped in the card slot 2112. The boss 2111 and the card slot 2112 are arranged in different directions to facilitate the installation of the elastic piece 22. Specifically, the elastic piece 22 includes a mounting portion 221. The mounting portion 221 is a horizontal arc-shaped sheet, and the mounting portion 221 is clamped on the boss 2111. The elastic piece 22 includes a pushing portion 222, and the pushing portion 222 has a convex structure and can contact the moxa stick 5 and apply a force. Preferably, the pushing portion 222 is an inverted V-shaped structure. The top of the inverted V-shaped structure contacts the side wall of the moxa stick 5 and pushes the moxa stick 5. The pushing portion 222 and the adjustment knob 23 jointly clamp and fix the moxa stick 5. The two ends of the inverted V shape are clamped in the card slot 2112, and the top of the inverted V shape abuts against the side wall of the moxa stick 5. The top of the inverted V shape protrudes due to deformation and contacts the side wall of the moxa stick 5 to generate a force on the moxa stick 5. The adjustment knob 23 is arranged on the other side of the moxa stick 5, and the two jointly push and clamp the moxa stick 5. The inverted V-shaped pushing portion 222 can be elastically deformed, so that moxa sticks 5 of different thicknesses and sizes can be adapted, and the practicability is strong.

[0039] Please refer to Figures 4-7, a temperature-adjustable moxibustion pen according to this embodiment includes a main body sleeve 1 and an adjusting device 2. The main body sleeve 1 is hollow and provided with a second through hole 11 for installing moxa. The adjusting device 2 is arranged at one end of the main body sleeve 1. The adjusting device 2 includes an adjusting seat 21, a spring piece 22 installed on the adjusting seat 21, and an adjusting knob 23 rotatably arranged on the adjusting seat 21. The adjusting seat 21 is hollow and provided with a first through hole 211. The side wall of the adjusting seat 21 is provided with an adjusting hole 212. The adjusting knob 23 is rotatably arranged in the adjusting hole 212. The second through hole 11 is communicated with the first through hole 211. A boss 2111 is provided at the top of the first through hole 211. A clamping groove 2112 is provided on the inner side wall of the second through hole 11. The spring piece 22 includes an installation part 221 and a pushing part 222 connected to the installation part 221. The installation part 221 is arranged on the boss 2111. The pushing part 222 is clamped in the clamping groove 2112. The adjusting knob 23 and the pushing part 222 respectively push both sides of the moxa. Specifically, the adjusting seat 21 is hollow and provided with a first through hole 211. The moxa stick 5 is loaded into the second through hole 11 through the first through hole 211. The pushing part 222 located on the inner side wall of the first through hole 211 contacts and pushes the side wall of the moxa stick 5. The adjusting knob 23 is arranged on the other side wall of the moxa stick 5 and contacts and pushes the other side wall of the moxa stick 5. The spring piece 22 and the adjusting knob 23 jointly push and clamp the moxa stick 5 to fix it. When adjusting, rotate the adjusting knob 23. The adjusting knob 23 rotates and drives the moxa stick 5 to move, so as to adjust the extension or retraction of the moxa stick 5, and further achieve the effect of adjusting the temperature. The moxibustion pen of the present utility model has an adjusting device 2, which can adjust the extension length of the moxa installed in the main body sleeve 1, so as to adjust the temperature of the human body, and is convenient to adjust the temperature according to different conditions or situations, and has good practicability.

[0040] Please refer to Figures 4-7 , the temperature-adjustable moxibustion pen of this embodiment further includes a first cap assembly 3 arranged at the other end of the adjusting device 2 away from the main body sleeve 1. The first cap assembly 3 includes a shaft sleeve cover 31 arranged on the adjusting seat 21, a sleeve 32 sleeved on the shaft sleeve cover 31, and a first end cap 33 sleeved on the sleeve 32. The first end cap 33 is rotatably connected to the sleeve 32. The first end cap 33 is provided with a first strip-shaped ventilation hole 331. The first strip-shaped ventilation hole 331 is arranged around the first end cap 33 in a rotating manner. When the moxa stick 5 burns and produces smoke, the moxibustion pen of the present utility model is provided with a first cap assembly 3, which can discharge and reduce the generated smoke, and has good use comfort. Specifically, the first end cap 33 of the present utility model is provided with a first strip-shaped ventilation hole 331, and the first strip-shaped ventilation hole 331 is arranged around the first end cap 33 in a rotating manner. When exhausting smoke, rotate the first end cap 33, and the smoke in the first end cap 33 is discharged through the first strip-shaped ventilation hole 331, so that the moxa stick 5 burns better.

[0041] Preferably, the first end cap 33 is provided with a first filter screen 332, and the first filter screen 332 is installed in the first strip-shaped ventilation hole 331. The temperature-adjustable moxibustion pen of the present utility model can directly ignite the moxa stick 5 and bring the moxa stick 5 close to the position where moxibustion is needed, so as to perform moxibustion on the human body to condition the body. The temperature-adjustable moxibustion pen of the present utility model can also cover the first cap assembly 3. The first filter screen 332 can prevent the ashes generated by the burning of the moxa stick 5 from falling onto the human body and scalding the skin, and the use comfort is better. Preferably, the material of the first end cap 33 is brass material, the material of the main body tube sleeve 1 is aluminum alloy material, and the material of the adjustment knob 23 is aluminum alloy material. Moreover, the surface of the adjustment knob 23 has a diamond pattern structure, which is convenient for rotating the adjustment knob 23.

[0042] Please refer to Figures 4-7 , the first cap assembly 3 of this embodiment further includes a first magnetic ring 34 and a second magnetic ring 35. The first magnetic ring 34 is arranged on the sleeve 32, and the second magnetic ring 35 is arranged on the first end cap 33. The first magnetic ring 34 and the second magnetic ring 35 attract each other. The first end cap 33 is installed and fixed by magnetic force to prevent falling off and loss, and the use is more convenient. The first end cap 33 is connected by magnetic force, and the rotational resistance of the first end cap 33 relative to the sleeve 32 is smaller, which is convenient for the first end cap 33 to rotate and exhaust smoke, and the exhaust smoke effect is good.

[0043] Preferably, the sleeve 32 is a graphite copper sleeve 32. The graphite copper sleeve 32 has self-lubricating properties and can rotate freely. The smoke generated by the burning of the moxa stick 5 approaches the graphite copper sleeve 32 and contacts and eliminates along the graphite copper sleeve 32, so as to achieve the effect of eliminating smoke. The graphite copper sleeve 32 has good lubricity, which is convenient for the first end cap 33 to rotate relative to the graphite copper sleeve 32, so as to achieve the effect of exhausting and eliminating smoke.

[0044] Please refer to Figures 4-7 , the temperature-adjustable moxibustion pen of this embodiment further includes a second cap assembly 4 arranged at one end of the main body tube sleeve 1 away from the adjusting device 2. The second cap assembly 4 includes a bottom cover 41 covering the second through hole 11, and the outer side of the bottom cover 41 is provided with anti-slip stripes 411. The bottom cover 41 is provided with anti-slip stripes 411, which is convenient for the installation and disassembly of the bottom cover 41, and the practicability is better. Moreover, the bottom cover 41 can cover one end of the second through hole 11 to prevent the heat of the moxa stick 5 from dissipating and improve the moxibustion effect.

[0045] Please refer to Figures 4-7 , the second cap assembly 4 of this embodiment further includes a second end cap 42 arranged on the bottom cover 41. The second end cap 42 is provided with a second strip-shaped ventilation hole 421, and the second strip-shaped ventilation hole 421 is arranged to rotate around the second end cap 42. The second strip-shaped ventilation hole 421 is arranged to rotate on the second end cap 42. By rotating the second end cap 42, the smoke in the second end cap 42 can be discharged, so as to achieve the effect of eliminating smoke.

[0046] Please refer to Figures 4-7 , the second cap assembly 4 of this embodiment further includes a third magnetic ring 43 and a fourth magnetic ring 44. The third magnetic ring 43 is disposed on the bottom cover 41, and the fourth magnetic ring 44 is disposed on the second end cover 42. The third magnetic ring 43 and the fourth magnetic ring 44 attract each other. The second end cover 42 is installed and fixed by magnetic adsorption, effectively preventing it from falling off and being lost, and is more convenient to use. Preferably, the second cap assembly 4 has the same structure as the first cap assembly 3, and the second cap assembly 4 can be used as a spare cap for the first cap assembly 3.

[0047] Please refer to Figures 4-7 , the second end cover 42 of this embodiment is provided with a second filter screen 422, and the second filter screen 422 is installed in the second strip-shaped ventilation hole 421. The second filter screen 422 is installed in the second strip-shaped ventilation hole 421, thereby forming a relatively sealed space, which can prevent the ashes from the burning of the moxa stick 5 from falling onto the human body and scalding the skin. At the same time, the second filter screen 422 has a plurality of ventilation holes, which can discharge the smoke.

[0048] The technical features of the above-described embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope described in this specification.

[0049] The above-described embodiments only represent several implementation manners of the present invention, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the utility model patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several deformations and improvements can still be made, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the utility model patent shall be subject to the appended claims.

Claims

1. A moxa stick telescopic adjustment device, characterized in that: include The adjusting seat has a first through hole formed in the hollow part, an adjusting hole is formed in the side wall of the first through hole, a clamping groove is formed in the side wall of the first through hole, and the adjusting hole and the clamping groove are arranged opposite to each other; An adjusting knob is connected to the side wall of the moxa stick installed in the first through hole, the adjusting knob is rotatably arranged in the adjusting hole, and the adjusting knob is arranged tangent to the moxa stick; The spring piece is used for pushing the moxa stick installed in the first through hole, and the spring piece is installed in the card slot.

2. A moxa stick telescopic adjustment device according to claim 1, characterized in that: The first through hole is provided with a boss, and the spring sheet includes a mounting portion and a push portion connected to the mounting portion, the mounting portion is clamped on the boss, and the push portion is clamped on the clamping slot.

3. A moxa stick telescopic adjustment device according to claim 2, characterized in that: The push portion is an inverted V-shaped structure.

4. A temperature-adjustable moxibustion pen, characterized in that , including a main tube sleeve and an adjusting device arranged at one end of the main tube sleeve, the adjusting device is the moxa stick telescopic adjusting device described in any one of claims 1 to 3, the main tube sleeve is hollow and penetrated by a second through hole, and the second through hole is connected to the first through hole.

5. A temperature-adjustable moxibustion pen according to claim 4, characterized in that: The temperature-adjustable moxibustion pen also includes a first cap assembly arranged at one end of the adjustment device away from the main tube sleeve, the first cap assembly includes a shaft sleeve cover arranged on the adjustment seat, a sleeve sleeved on the shaft sleeve cover, and a first end cover sleeved on the sleeve, the first end cover is rotatably connected to the sleeve, the first end cover is provided with a first strip-shaped air hole, the first strip-shaped air hole is rotatably arranged around the first end cover, the first end cover is provided with a first filter net, and the first filter net is installed on the first strip-shaped air hole.

6. A temperature-adjustable moxibustion pen according to claim 5, characterized in that: The first cap assembly also includes a first magnetic ring and a second magnetic ring. The first magnetic ring is arranged on the sleeve, and the second magnetic ring is arranged on the first end cover. The first magnetic ring and the second magnetic ring attract each other.

7. The temperature-adjustable moxibustion pen according to claim 4, characterized in that: The temperature-adjustable moxibustion pen further comprises a second cap assembly arranged at an end of the main tube sleeve away from the adjusting device, the second cap assembly comprises a bottom cover covering the second through hole, and an outer side of the bottom cover is provided with anti-slip stripes.

8. The temperature-adjustable moxibustion pen according to claim 7, characterized in that: The second cap assembly also includes a second end cover arranged on the bottom cover, the second end cover is provided with a second strip-shaped air vent, and the second strip-shaped air vent is rotatably arranged around the second end cover.

9. The temperature-adjustable moxibustion pen according to claim 8, characterized in that: The second cap assembly also includes a third magnetic ring and a fourth magnetic ring. The third magnetic ring is arranged on the bottom cover, and the fourth magnetic ring is arranged on the second end cover. The third magnetic ring and the fourth magnetic ring attract each other.

10. The temperature-adjustable moxibustion pen according to claim 8, characterized in that: The second end cover is provided with a second filter screen, and the second filter screen is installed in the second strip-shaped air hole.

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