Traditional Chinese medicine fumigation device

By designing a rotary structure and filtration system with adjustable mist output intensity, the problem of the inability to flexibly adjust the mist output of traditional Chinese medicine fumigation devices has been solved, improving treatment efficiency and steam purity, and enhancing the effect of traditional Chinese medicine fumigation.

CN224166586UActive Publication Date: 2026-04-28JILIN UNIV FIRST HOSPITAL
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
JILIN UNIV FIRST HOSPITAL
Filing Date
2024-12-23
Publication Date
2026-04-28

AI Technical Summary

Technical Problem

Existing Chinese medicine fumigation devices cannot flexibly adjust the intensity of the medicinal mist output according to individual needs, and the insufficiently dissolved medicinal particles reduce the skin's absorption efficiency of the drug components.

Method used

A traditional Chinese medicine fumigation device was designed, which includes a turntable structure with adjustable output intensity of medicinal mist and a filtration system. The intensity and range of medicinal mist can be adjusted by rotating the sliding groove to adjust the inner diameter of the sliding block. The steam impacts the rotating blades to drive the filter cylinder for filtration, thereby improving the purity of the steam.

Benefits of technology

It enables the adjustment of the intensity and range of the medicinal mist according to treatment needs, thereby improving treatment efficiency. Furthermore, the filtration system enhances the purity of the steam and improves the effect of traditional Chinese medicine fumigation.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model relates to the field of medical traditional Chinese medicine fumigation treatment, and discloses a traditional Chinese medicine fumigation device which comprises a movable base and a supporting block, the top end of the movable base is fixedly connected with an electromagnetic heating spraying barrel, the middle of the top end of the movable base is fixedly connected with a material boiling barrel, and the top end of the material boiling barrel is detachably connected with a cover. A connecting cylinder is fixedly connected to the top end of the cover, a conveying assembly is arranged at the top end of the connecting cylinder, a universal joint is fixedly connected to the top end of the conveying assembly, a spray head is rotatably connected to the end, away from the electromagnetic heating spraying barrel, of the universal joint, and a discharging port is fixedly connected to the exterior of the spray head; and a lantern ring is detachably connected to the outer part of the discharge hole. According to the utility model, the intensity and the range of the medicine effect can be adjusted according to different treatment requirements and user preferences, so that the treatment efficiency is improved, in addition, medicine mist is filtered, the purity of steam is improved, and meanwhile, a user can conveniently clean and replace the filter barrel.
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Description

Technical Field

[0001] This utility model relates to the field of medical herbal fumigation therapy, and in particular to a herbal fumigation device. Background Technology

[0002] Traditional Chinese medicine fumigation has a regulatory effect on the nerves and meridians. Its heat-medicinal effect can beneficially regulate the uncoordinated functions of organs, relax emotions and muscles, improve sleep, and bring about a sense of physical and mental well-being, thus achieving a balance from physiological to psychological perspectives. Furthermore, the use of precious Chinese herbs in fumigation can also achieve the goals of nourishing blood, replenishing qi, and calming the mind.

[0003] Traditional Chinese medicine fumigation, a branch of external therapies, utilizes the medicinal ions generated in the steam of Chinese herbs to directly fumigate the skin or affected areas. Based on the skin's absorption, penetration, and excretion properties, and leveraging the heat therapy of fumigation, local blood circulation is improved, and skin pores are dilated, allowing the medicinal ions to more easily penetrate the body. Through the absorption and penetration of these ions into the skin, acupoints, and pores, it achieves the effects of unblocking meridians and harmonizing qi and blood, showing good efficacy in relieving fatigue and promoting health. Generally, traditional Chinese medicine fumigation involves steaming Chinese herbs in water to produce steam, or using a fumigation device that extracts the herbs using steam.

[0004] Some existing traditional Chinese medicine fumigation devices, due to their relatively simple design, prevent users from flexibly adjusting the output intensity of the medicinal mist according to individual needs or treatment requirements. Furthermore, when Chinese medicinal herbs are heated, their active ingredients are released along with the steam to form a medicinal mist. However, without a specially designed filtration system, the large number of undissolved fine medicinal particles in this mist can reduce the skin's absorption efficiency of the medicinal components, thereby weakening the expected therapeutic effect. Therefore, to address these issues, a new traditional Chinese medicine fumigation device is proposed. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a traditional Chinese medicine fumigation device, which aims to improve the problems of the inability to adjust the size of the medicinal mist and filter and purify the medicinal mist particles in the existing technology.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A traditional Chinese medicine fumigation device includes a movable base and a support block. An electromagnetic heating spray tank is fixedly connected to the top of the movable base. A cooking cylinder is fixedly connected to the middle of the top of the movable base. A cover is detachably connected to the top of the cooking cylinder. A connecting cylinder is fixedly connected to the top of the cover. A conveying assembly is provided at the top of the connecting cylinder. A universal joint is fixedly connected to the top of the conveying assembly. A nozzle is rotatably connected to the end of the universal joint away from the electromagnetic heating spray tank. An outlet is fixedly connected to the outside of the nozzle. A collar is detachably connected to the outside of the outlet. A sliding groove is formed on the outside of the collar. A turntable is fixedly connected to the bottom of the sliding groove. A cross groove is formed at the bottom of the turntable. A limiting assembly is provided on the outside of the cross groove. Multiple sliding blocks are slidably connected to the inner wall of the cross groove. A limiting roller is fixedly connected to the middle of each sliding block. A grooved plate is fixedly connected to the bottom of the collar. Multiple through grooves are formed at the bottom of the grooved plate.

[0008] As a further description of the above technical solution:

[0009] The conveying assembly includes a guide tube, the bottom end of which is fixedly connected to the top end of the connecting cylinder, and the top end of which is fixedly connected to a connecting tube.

[0010] As a further description of the above technical solution:

[0011] The limiting assembly includes a limiting cylinder, the side of the limiting cylinder near the limiting roller is fixedly connected to the outside of the turntable, a conical rod is slidably connected to the inner wall of the limiting cylinder, a limiting spring is fixedly connected to the side of the guide tube near the sliding block, and the end of the limiting spring away from the conical rod is fixedly connected to the inner wall of the limiting cylinder.

[0012] As a further description of the above technical solution:

[0013] The outer side of the support block engages with the inner wall of the connecting cylinder. A filter cylinder is rotatably connected to the side of the support block near the nozzle. The outer side of the filter cylinder away from the support block is rotatably connected to the inner wall of the connecting cylinder. Multiple rotating blades are fixedly connected to the outer side of the filter cylinder. The outer side of the rotating blades is slidably connected to the inner wall of the connecting cylinder. A groove is provided at the bottom end of the support block. A locking member is slidably connected inside the groove. A return spring is fixedly connected to the top end of the locking member. A locking hole is provided at the bottom end of the connecting cylinder near the support block. A limit rod is fixedly connected to the top end of the electromagnetic heating spray tank near the nozzle. A connecting block is slidably connected to the outer side of the limit rod. The outer side of the top end of the connecting pipe is fixedly connected to the inner wall of the middle part of the connecting block.

[0014] As a further description of the above technical solution:

[0015] The outer part of the cone-shaped rod engages with the inner wall of the slide groove, the bottom end of the sliding block is slidably connected to the inner wall of the through groove, and the bottom end of the groove plate is provided with multiple through openings.

[0016] As a further description of the above technical solution:

[0017] The bottom end of the limiting roller is slidably connected to the inner wall of the turntable, and the top end of the limiting roller is slidably connected to the bottom end of the groove.

[0018] As a further description of the above technical solution:

[0019] The top end of the reset spring is fixedly connected to the inner wall of the groove, and the outside of the clip engages with the inner wall of the clip hole;

[0020] As a further description of the above technical solution:

[0021] The front side of the connecting block is threaded with an adjusting bolt, and the end of the universal joint away from the nozzle is externally fixedly connected to the inner wall of the middle part of the connecting block.

[0022] This utility model has the following beneficial effects:

[0023] 1. In this utility model, by rotating the slide groove, the turntable adjusts the size of the inner diameter of the sliding block through the cross groove and the through groove, so as to adjust the intensity and range of the drug effect according to different treatment needs and user preferences, thereby improving treatment efficiency.

[0024] 2. In this utility model, the steam impacts the rotating blades to drive the filter cylinder to rotate and perform centrifugal rotation filtration of the mist. In addition, the support block is pulled to drive the filter cylinder to be disassembled and installed, thereby achieving the filtration of drug mist, improving the purity of steam, and making it convenient for users to clean and replace the filter cylinder. Attached Figure Description

[0025] Figure 1 This is a three-dimensional schematic diagram of a traditional Chinese medicine fumigation device proposed in this utility model;

[0026] Figure 2 This is a schematic diagram of the conical rod of a traditional Chinese medicine fumigation device proposed in this utility model;

[0027] Figure 3 This is an exploded view of the turntable of a traditional Chinese medicine fumigation device proposed in this utility model;

[0028] Figure 4 for Figure 3 Enlarged view of point A in the middle;

[0029] Figure 5 This is a schematic diagram of the structure of the lid of a traditional Chinese medicine fumigation device proposed in this utility model;

[0030] Figure 6 for Figure 5 Enlarged view at point B in the middle;

[0031] Figure 7 This is a schematic diagram of the structure of the card hole in the traditional Chinese medicine fumigation device proposed in this utility model.

[0032] Legend:

[0033] 1. Movable base; 2. Electromagnetic heating spray tank; 3. Cooking tank; 4. Cover; 5. Connecting tube; 6. Guide tube; 7. Connecting tube; 8. Universal joint; 9. Nozzle; 10. Discharge port; 11. Collar; 12. Slide groove; 13. Turntable; 14. Cross groove; 15. Limiting cylinder; 16. Conical rod; 17. Limiting spring; 18. Sliding block; 19. Limiting roller; 20. Groove; 21. Through groove; 22. Through port; 23. Support block; 24. Filter cylinder; 25. Rotating blade; 26. Groove; 27. Clamping device; 28. Return spring; 29. ​​Locking hole; 30. Limiting rod; 31. Connecting block; 32. Adjusting bolt. Detailed Implementation

[0034] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0035] Reference Figures 1 to 3 This utility model provides an embodiment of a traditional Chinese medicine fumigation device, comprising a movable base 1 and a support block 23. The movable base 1 has casters at its four corners for easy movement. An electromagnetic heating spray tank 2 is fixedly connected to the top of the movable base 1. The electromagnetic heating spray tank 2 heats the water and the herbal medicine pack inside the tank using electromagnetic heating principles, causing the water to boil and generate steam. It is the core component of the entire device for generating steam. A boiling cylinder 3 is fixedly connected to the middle of the top of the movable base 1. A lid 4 is detachably connected to the top of the boiling cylinder 3, covering the top of the boiling cylinder 3 and featuring a handle or fastening device for easy opening and closing.

[0036] A connecting cylinder 5 is fixedly connected to the top of the lid 4. A conveying assembly is provided at the top of the connecting cylinder 5. The conveying assembly includes a guide pipe 6. The bottom end of the guide pipe 6 is fixedly connected to the top of the connecting cylinder 5. The connecting cylinder 5 serves as a steam transmission channel, guiding the steam generated by the cooking cylinder 3 to the guide pipe 6. A connecting pipe 7 is fixedly connected to the top of the guide pipe 6. The connecting pipe 7 transmits steam and is part of the steam transmission path.

[0037] refer to Figure 2 A universal joint 8 is fixedly connected to the top of the conveying assembly. A nozzle 9 is rotatably connected to the end of the universal joint 8 furthest from the electromagnetic heating spray tank 2. The universal joint 8 consists of multiple tapered sleeves and can be twisted into any shape. The universal joint 8 connects the connecting pipe 7 and the nozzle 9, allowing adjustment of the angle and position of the nozzle 9, enabling it to spray steam in different directions. A discharge port 10 is fixedly connected to the outside of the nozzle 9. The nozzle 9 and the discharge port 10 spray steam in a mist, serving as the terminal component for steam emission.

[0038] A collar 11 is detachably connected to the outside of the discharge port 10. The collar 11 has a groove 12 on its outer surface, forming a ring structure. The collar 11 fits snugly around the outside of the discharge port 10. The collar 11 has a protruding inner ring inside and an arc-shaped groove 12 on its outer surface. A turntable 13 is fixedly connected to the bottom of the groove 12, and the collar 11 slides along the inner ring in the middle of the groove 12. A cross groove 14 is formed at the bottom of the turntable 13. The cross groove 14 consists of multiple intersecting elongated grooves in a circular shape. A limiting component, including a limiting cylinder 15, is provided on the outside of the cross groove 14.

[0039] refer to Figure 4 The limiting cylinder 15 is fixedly connected to the outside of the turntable 13 on the side near the limiting roller 19, housing the limiting spring 17 and providing guidance and support for the sliding of the conical rod 16, connecting the turntable 13 and the conical rod 16. The conical rod 16 is slidably connected to the inner wall of the limiting cylinder 15, and the outside of the conical rod 16 engages with the inner wall of the slide groove 12. The rotation of the turntable 13 is locked or unlocked by the sliding of the conical rod 16 in the slide groove 12. The limiting spring 17 is fixedly connected to the side of the guide tube 6 near the sliding block 18. The end of the limiting spring 17 away from the conical rod 16 is fixedly connected to the inner wall of the limiting cylinder 15. The limiting spring 17 provides a reset force for the conical rod 16, ensuring that the position of the turntable 13 can be locked after the mist range of the discharge port 10 is adjusted.

[0040] Multiple sliding blocks 18 are slidably connected to the inner wall of the cross groove 14. The sliding blocks 18 change their central inner diameter by pressing against each other, thereby adjusting the range of mist sprayed from the outlet 10. A limiting roller 19 is fixedly connected to the middle of the sliding block 18. The bottom end of the limiting roller 19 is slidably connected to the inner wall of the turntable 13, and the top end of the limiting roller 19 is slidably connected to the bottom end of the groove plate 20. The limiting roller 19 slides in the corresponding grooves of the turntable 13 and the groove plate 20, driving the sliding block 18 to move.

[0041] The bottom end of the collar 11 is fixedly connected to the grooved plate 20. The bottom end of the grooved plate 20 is provided with multiple through grooves 21. The bottom end of the sliding block 18 is slidably connected to the inner wall of the through groove 21. The bottom end of the grooved plate 20 is provided with multiple through openings 22. It has a disc-shaped structure with multiple through grooves 21 and through openings 22 at the bottom end. The through openings 22 are for easy observation of the rotation state of the sliding block 18. The through grooves 21 are long strips.

[0042] refer to Figure 5 , Figure 6 The outer side of the support block 23 engages with the inner wall of the connecting cylinder 5. A filter cylinder 24 is rotatably connected to the side of the support block 23 closest to the nozzle 9. The filter cylinder 24 filters the steam using centrifugal force generated by its high-speed rotation, removing impurities and improving steam purity. The end of the filter cylinder 24 furthest from the support block 23 is rotatably connected to the inner wall of the connecting cylinder 5, here to define the position of the filter cylinder 24.

[0043] Multiple rotating blades 25 are fixedly connected to the outside of the filter cylinder 24. The rotating blades 25 are slidably connected to the inner wall of the connecting cylinder 5. When the rotating blades 25 are subjected to the impact force of steam, they drive the filter cylinder 24 to rotate, which is the power source for the rotation of the filter cylinder 24. A groove 26 is provided at the bottom end of the support block 23. The groove 26 accommodates the locking piece 27 and the return spring 28, providing space for the sliding of the locking piece 27.

[0044] A locking piece 27 is slidably connected inside the groove 26. A return spring 28 is fixedly connected to the top of the locking piece 27. The top of the return spring 28 is fixedly connected to the inner wall of the groove 26. The return spring 28 provides a return force to the locking piece 27, ensuring that the locking piece 27 remains engaged with the locking hole 29 under normal conditions. A locking hole 29 is opened at the bottom of the side of the connecting cylinder 5 near the support block 23. The outside of the locking piece 27 engages with the inner wall of the locking hole 29. The engagement of the locking hole 29 and the locking piece 27 fixes the support block 23.

[0045] refer to Figure 5 , Figure 7 A limiting rod 30 is fixedly connected to the top of the electromagnetic heating spray tank 2 near the nozzle 9. A connecting block 31 is slidably connected to the outside of the limiting rod 30. The limiting rod 30 provides guidance and support for the sliding of the connecting block 31, ensuring the stability of the connecting block 31 during adjustment. The top of the connecting pipe 7 is fixedly connected to the inner wall of the middle part of the connecting block 31. An adjusting bolt 32 is threadedly connected to the front side of the connecting block 31. The end of the universal joint 8 away from the nozzle 9 is fixedly connected to the inner wall of the middle part of the connecting block 31. The connecting block 31, through cooperation with the limiting rod 30 and the adjusting bolt 32, adjusts the position of the universal joint 8, thereby adjusting the position of the nozzle 9.

[0046] Working Principle: During use, by opening the lid 4, the herbal medicine pack is placed inside the electromagnetic heating spray tank 2 and heated to maximum power until the hot water in the tank boils, generating steam. This steam flows through the connecting tube 5, guide pipe 6, and connecting pipe 7, ultimately reaching the universal joint 8 and nozzle 9, where it is sprayed out as a mist. After the mist is sprayed, the user can move the device to a suitable position using the movable base 1. The device is then fixed in place by stepping on the stop pedal of the universal wheel at the bottom of the movable base 1. The angle and height of the spray from the nozzle 9's outlet 10 are adjusted using the universal joint 8, and the position of the universal joint 8 is adjusted by tightening the adjusting bolt 32. This allows for better adjustment of the nozzle 9's position, ensuring that the herbal mist sprayed from the nozzle 9 reaches the user's desired joints at the appropriate distance, ensuring optimal fumigation results. While the nozzle 9 is spraying, the user can unlock the turntable 13 by pulling the cone rod 16. This allows the turntable 13 to push the limiting roller 19 through the inner wall of the cross groove 14, with one end sliding in the through groove 21 of the slot 20 and the other end sliding in the cross groove 14 of the turntable 13. During the sliding of the limiting roller 19, the sliding block 18 fixed to the limiting roller 19 will change the size of the central inner diameter outlet as the limiting roller 19 slides against the adjacent sliding block 18, thereby adjusting the range of mist sprayed from the outlet 10. After the central inner diameter of the outlet 10 is adjusted to a suitable size, the cone rod 16 can be released, allowing the cone rod 16 to reset under the elastic force of the limiting spring 17. This changes the outer diameter of the cone rod 16 sliding within the slide groove 12, thus locking the rotation position of the turntable 13. This fixes the size of the central inner diameter ring of the outlet 10.

[0047] When steam is transported in the electromagnetic heating spray tank 2 and the guide pipe 6, the steam will first contact the rotating blade 25 of the filter cylinder 24 through the connection between the electromagnetic heating spray tank 2 and the guide pipe 6. The rotating blade 25 is driven by the upward impact of the steam, which simultaneously drives the filter cylinder 24, which is fixed to the rotating blade 25, to rotate at high speed in the middle of the connecting cylinder 5, generating centrifugal force, thereby filtering the steam of the Chinese medicine, improving the purity of the steam and increasing the effect of fumigation of the Chinese medicine.

[0048] After fumigation, the user can pull the support block 23 to disengage the filter cylinder 24 and the rotating blade 25 from the inner wall of the connecting cylinder 5 for easy cleaning. After cleaning, the support block 23 can be used to reset the rotating blade 25 and the filter cylinder 24 into the connecting cylinder 5. When the filter cylinder 24 resets, the retaining clip 27 fixed at the bottom of the support block 23 will be pushed back into the groove 26 by the opening of the connecting cylinder 5. When the retaining clip 27 is aligned with the retaining hole 29 of the connecting cylinder 5, the retaining clip 27 will be pushed back into the retaining hole 29 by the return spring 28, thus fixing the position of the filter cylinder 24 and the rotating blade 25.

[0049] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A traditional Chinese medicine fumigation device, comprising a movable base (1) and a support block (23), characterized in that: The top of the movable base (1) is fixedly connected to an electromagnetic heating spray tank (2), and the middle of the top of the movable base (1) is fixedly connected to a cooking tank (3). The top of the cooking tank (3) is detachably connected to a cover (4), and the top of the cover (4) is fixedly connected to a connecting cylinder (5). The top of the connecting cylinder (5) is provided with a conveying assembly, and the top of the conveying assembly is fixedly connected to a universal joint (8). The end of the universal joint (8) away from the electromagnetic heating spray tank (2) is rotatably connected to a nozzle (9). The outside of the nozzle (9) is fixedly connected to a discharge port (10). The outside of the discharge port (10) is... A collar (11) is detachably connected. A sliding groove (12) is provided on the outside of the collar (11). A turntable (13) is fixedly connected to the bottom of the sliding groove (12). A cross groove (14) is provided at the bottom of the turntable (13). A limiting component is provided on the outside of the cross groove (14). A plurality of sliding blocks (18) are slidably connected to the inner wall of the cross groove (14). A limiting roller (19) is fixedly connected to the middle of the sliding block (18). A grooved plate (20) is fixedly connected to the bottom of the collar (11). A plurality of through grooves (21) are provided at the bottom of the grooved plate (20).

2. The herbal fumigation device according to claim 1, characterized in that: The conveying assembly includes a guide tube (6), the bottom end of which is fixedly connected to the top end of the connecting cylinder (5), and the top end of the guide tube (6) is fixedly connected to a connecting tube (7).

3. The herbal fumigation device according to claim 2, characterized in that: The limiting assembly includes a limiting cylinder (15), the side of the limiting cylinder (15) near the limiting roller (19) is fixedly connected to the outside of the turntable (13), a conical rod (16) is slidably connected to the inner wall of the limiting cylinder (15), a limiting spring (17) is fixedly connected to the side of the guide tube (6) near the sliding block (18), and the end of the limiting spring (17) away from the conical rod (16) is fixedly connected to the inner wall of the limiting cylinder (15).

4. The herbal fumigation device according to claim 2, characterized in that: The outer side of the support block (23) engages with the inner wall of the connecting cylinder (5). A filter cylinder (24) is rotatably connected to the side of the support block (23) near the nozzle (9). The outer side of the filter cylinder (24) away from the support block (23) is rotatably connected to the inner wall of the connecting cylinder (5). Multiple rotating blades (25) are fixedly connected to the outer side of the filter cylinder (24). The outer side of the rotating blades (25) is slidably connected to the inner wall of the connecting cylinder (5). A groove (26) is provided at the bottom end of the support block (23). The groove (26) is slidably connected to a clip (27), and a return spring (28) is fixedly connected to the top of the clip (27). The bottom of the connecting cylinder (5) near the support block (23) has a clip hole (29). The top of the electromagnetic heating spray barrel (2) near the nozzle (9) is fixedly connected to a limit rod (30). The limit rod (30) is slidably connected to a connecting block (31). The top of the connecting pipe (7) is fixedly connected to the inner wall of the middle part of the connecting block (31).

5. The herbal fumigation device according to claim 3, characterized in that: The outside of the cone rod (16) engages with the inner wall of the slide groove (12), the bottom end of the sliding block (18) is slidably connected to the inner wall of the through groove (21), and the bottom end of the slot plate (20) is provided with multiple through holes (22).

6. The herbal fumigation device according to claim 1, characterized in that: The bottom end of the limiting roller (19) is slidably connected to the inner wall of the turntable (13), and the top end of the limiting roller (19) is slidably connected to the bottom end of the groove plate (20).

7. The herbal fumigation device according to claim 4, characterized in that: The top end of the reset spring (28) is fixedly connected to the inner wall of the groove (26), and the outside of the clip (27) engages with the inner wall of the clip hole (29).

8. A traditional Chinese medicine fumigation device according to claim 4, characterized in that: The front side of the connecting block (31) is threaded with an adjusting bolt (32), and the end of the universal joint (8) away from the nozzle (9) is externally fixed to the inner wall of the middle part of the connecting block (31).