Civil air defense door hand wheel

Abstract

The utility model relates to the field of civil air defense doors, and particularly discloses a civil air defense door hand wheel which comprises a shaft body. A ring body; the shaft body is located at the axis of the ring body, and a plurality of supporting rods arranged in an annular array mode are installed between the shaft body and the ring body. One end of each supporting rod extends out of the ring body, a groove body is formed in each supporting rod, a connecting block is slidably installed in each groove body, an elastic piece is installed between each connecting block and the inner wall of each groove body, a connecting rod is arranged at the end, away from the shaft body, of each supporting rod, the connecting rods are inserted into the supporting rods to be connected with the connecting blocks, and positioning assemblies used for fixing the connecting blocks are arranged on the supporting rods. The civil air defense door has the effect of facilitating opening and closing of the civil air defense door.

Description

Technical Field

[0001] This application relates to the field of air defense doors, and in particular to a handwheel for air defense doors. Background Technology

[0002] Civil defense doors are the entrances and exits of civil defense projects. They are clearly categorized, including ordinary single and double-leaf protective airtight doors and airtight doors, as well as single and double-leaf protective airtight doors and airtight doors with movable thresholds. Civil defense doors are classified as follows: 1. Ordinary single and double-leaf protective airtight doors and airtight doors; 2. Single and double-leaf protective airtight doors and airtight doors with movable thresholds; 3. Rubber hose type blast wave breaker; 4. Suspended swing type blast wave breaker (shielding) breaker; 5. Drop-type double-leaf protective airtight doors and airtight doors, etc. Civil defense doors are generally equipped with handwheels to open or close them. Typical handwheels consist of a ring and a support rod connecting the ring and the shaft, which is inconvenient for people with limited strength to operate, thus affecting the opening and closing of the door. Utility Model Content

[0003] To facilitate the opening and closing of air-raid shelter doors, this application provides a handwheel for air-raid shelter doors.

[0004] The technical solution adopted by the handwheel of the civil defense door provided in this application is as follows:

[0005] include:

[0006] Shaft body;

[0007] Ring body;

[0008] The shaft is located at the center of the ring, and several support rods arranged in a ring array are installed between the shaft and the ring.

[0009] One end of the support rod extends out of the ring body, and each support rod has a groove inside. A connecting block is slidably installed in the groove. An elastic element is installed between the connecting block and the inner wall of the groove. A connecting rod is provided on the end of the support rod away from the shaft. The connecting rod is inserted into the support rod and connected to the connecting block. The support rod is provided with a positioning component for fixing the connecting block.

[0010] By adopting the above technical solution, the output torque is increased through the action of the connecting rod, making it easier for people with less strength to use, thus facilitating the opening and closing of the air-raid shelter door. Simultaneously, the connecting block allows for adjustment of the connecting rod's length, making it more suitable for different groups of people, facilitating the opening and closing of the air-raid shelter door, and saving manpower.

[0011] In one possible implementation, the connecting rod is provided with a locking rod, the connecting block is provided with a locking groove, and the locking rod is threadedly connected to the locking groove.

[0012] In one possible implementation, sliders are provided at both ends of the connecting block, and grooves that cooperate with the sliders are provided on the inner wall of the support rod.

[0013] In one possible implementation, the positioning component includes a first fastener, a connecting block having a positioning hole, a support rod having a plurality of mounting holes that mate with the positioning hole, and one end of the first fastener passing through the mounting hole and screwed into the positioning hole.

[0014] In one possible implementation, a sealing ring is fitted on the outer wall of the connecting rod, and the outer wall of the sealing ring abuts against the inner wall of the groove.

[0015] In one possible implementation, an anti-slip sleeve is provided on one end of the connecting rod.

[0016] In one possible implementation, a fluorescent ring is adhered to the surface of the ring.

[0017] In one possible implementation, a connecting sleeve is fitted on the outer wall of the support rod, and a limiting block is provided on the connecting sleeve, with a limiting groove for the installation of the ring body on the limiting block.

[0018] In one possible implementation, the limiting block is fixed to the ring body by a second fastener.

[0019] In one possible implementation, the second fastener is a bolt, the ring body has a first through hole, the limiting block has a second through hole that mates with the first through hole, and the second fastener passes through the first through hole and the second through hole in sequence and then mates with the nut.

[0020] In summary, this application offers the following beneficial technical effects: The extended output torque, achieved through the linkage, makes it easier for people with limited strength to operate, thus facilitating the opening and closing of the air-raid shelter door. Simultaneously, the connecting block allows for easy adjustment of the linkage length, making it more suitable for different users, facilitating the opening and closing of the air-raid shelter door, and saving manpower. Attached Figure Description

[0021] Figure 1 This is an overall schematic diagram based on an embodiment of this application;

[0022] Figure 2 This is a cross-sectional view of an embodiment, mainly showing the positioning components;

[0023] Figure 3 yes Figure 2 An enlarged schematic diagram of part A;

[0024] Figure 4 yes Figure 3 An enlarged schematic diagram of part B;

[0025] Figure 5 This is a schematic cross-sectional view of an embodiment, mainly showing the slider structure;

[0026] Figure 6 yes Figure 5 An enlarged schematic diagram of part C.

[0027] Reference numerals: 1. Shaft; 2. Ring; 3. Support rod; 4. Connecting rod; 5. Groove; 6. Connecting block; 7. Elastic element; 8. Locking rod; 9. Locking groove; 10. First fastener; 11. Positioning hole; 12. Mounting hole; 13. Slider; 14. Slide groove; 15. Sealing ring; 16. Anti-slip sleeve; 17. Fluorescent ring; 18. Connecting sleeve; 19. Limiting block; 20. Limiting groove; 21. Second fastener; 22. First through hole; 23. Second through hole. Detailed Implementation

[0028] The following is in conjunction with the appendix Figure 1-6 This application will be described in further detail.

[0029] First, those skilled in the art should understand that these embodiments are merely used to explain the technical principles of the embodiments of this application and are not intended to limit the scope of protection of the embodiments of this application. Those skilled in the art can make adjustments as needed to adapt to specific application scenarios.

[0030] In the description of the embodiments of this application, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this application based on the specific circumstances.

[0031] In the embodiments of this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0032] Reference Figure 1-6The handwheel of the air-raid shelter door includes a shaft 1, a ring 2, support rods 3, and connecting rods 4. The shaft 1 is located at the center of the ring 2. Several support rods 3 arranged in a circular array are installed between the shaft 1 and the ring 2. One end of each support rod 3 extends outside the ring 2. Each support rod 3 has a groove 5 inside. One end of the connecting rod 4 is inserted into the support rod 3. A connecting block 6 is slidably installed in the groove 5. An elastic element 7 (spring) is provided between the connecting block 6 and the inner wall of the groove 5. The end of the connecting rod 4 inserted into the support rod 3 is detachably connected to the connecting block 6. The support rod 3 has a positioning component for fixing the connecting block 6. The connecting rod 4 increases the output torque, making it easier for people with less strength to use, thus facilitating the opening and closing of the air-raid shelter door. Simultaneously, the connecting block 6 allows for adjustment of the length of the connecting rod 4, making it more suitable for different users, facilitating the opening and closing of the air-raid shelter door, and saving manpower.

[0033] The number of support rods 3 and connecting rods 4 is the same, and the number can be 6-8.

[0034] The connecting rod 4 is equipped with a locking rod 8, and the connecting block 6 is equipped with a locking groove 9. The locking rod 8 is threadedly connected to the locking groove 9. The threaded connection facilitates the installation and disassembly of the connecting rod 4, thereby making it easier to maintain the handwheel.

[0035] The positioning assembly includes a first fastener 10, which is a bolt. The connecting block 6 has a positioning hole 11 with threads. The support rod 3 has several mounting holes 12 that mate with the positioning hole 11. The mounting holes 12 are evenly distributed along the length of the support rod 3. One end of the first fastener 10 passes through the mounting hole 12 and is screwed into the positioning hole 11. When the connecting rod 4 is too long, the connecting block 6 can be moved to a suitable position by the connecting rod 4, and then the connecting block 6 can be fixed by the first fastener 10.

[0036] The connecting block 6 has sliders 13 at both ends, and the inner wall of the support rod 3 has grooves 14 that cooperate with the sliders 13. This provides stability for the movement of the connecting block 6.

[0037] A sealing ring 15 is fitted on the outer wall of the connecting rod 4, and the outer wall of the sealing ring 15 abuts against the inner wall of the groove 5.

[0038] A non-slip sleeve 16 is provided on one end of the connecting rod 4. The non-slip sleeve 16 is made of rubber, which increases the friction between the palm and the connecting rod 4, making it easier to grip the connecting rod 4.

[0039] A fluorescent ring 17 is adhered to the surface of the ring 2. This improves the visibility of the entire handwheel structure in dark conditions, making it easier to locate.

[0040] A connecting sleeve 18 is fixedly fitted onto the outer wall of the support rod 3. A limiting block 19 is fixedly fitted onto the connecting sleeve 18, and a limiting groove 20 is formed on the limiting block 19 for mounting the ring body 2. The limiting block 19 and the ring body 2 are fixed together by a second fastener 21. The second fastener 21 is a bolt. The ring body 2 has a first through hole 22, and the limiting block 19 has a second through hole 23 that mates with the first through hole 22. The second fastener 21 passes through the first through hole 22 and the second through hole 23 in sequence and then engages with a nut. This fixes the limiting block 19 to the ring body 2.

[0041] In the description of the embodiments of this application, it should be noted that the terms "inner" and "outer" and other terms indicating direction or positional relationship are based on the direction or positional relationship shown in the drawings. This is only for the convenience of description and does not indicate or imply that the device or component must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of this application.

[0042] In the description of this application, the references to terms such as "an embodiment," "some embodiments," "in this embodiment," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0043] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A hand wheel for a civil air defense door, comprising: a shaft body (1); a ring body (2); the shaft body (1) is located at the shaft center of the ring body (2), and a plurality of support rods (3) arranged in an annular array are installed between the shaft body (1) and the ring body (2); characterized in that: one end of the support rod (3) extends out of the ring body (2), and a groove (5) is formed in the inside of each support rod (3), a connecting block (6) is slidably installed in the groove (5), an elastic member (7) is installed between the connecting block (6) and the inner wall of the groove (5), a connecting rod (4) is provided on the end of the support rod (3) away from the shaft body (1), the connecting rod (4) is inserted into the support rod (3) and connected with the connecting block (6), and a positioning assembly for fixing the connecting block (6) is provided on the support rod (3).

2. The civil air defense door hand wheel according to claim 1, characterized in that: a lock rod (8) is provided on the connecting rod (4), a lock groove (9) is provided on the connecting block (6), and the lock rod (8) is threadedly connected with the lock groove (9).

3. The civil air defense door hand wheel according to claim 1, characterized in that: sliding blocks (13) are provided on both ends of the connecting block (6), and sliding grooves (14) matched with the sliding blocks (13) are formed in the inner wall of the support rod (3).

4. The civil air defense door hand wheel according to claim 1, characterized in that: the positioning assembly comprises a first fastener (10), a positioning hole (11) is formed in the connecting block (6), a plurality of mounting holes (12) matched with the positioning hole (11) are formed in the support rod (3), and one end of the first fastener (10) is screwed through the mounting hole (12) and the positioning hole (11).

5. The civil air defense door hand wheel according to claim 1, characterized in that: a sealing ring (15) is sleeved on the outer wall of the connecting rod (4), and the outer wall of the sealing ring (15) abuts against the inner wall of the groove (5).

6. The civil air defense door hand wheel according to claim 1, characterized in that: an anti-skid sleeve (16) is provided on one end of the connecting rod (4).

7. The civil air defense door hand wheel according to claim 1, characterized in that: a fluorescent ring (17) is bonded to the surface of the ring body (2).

8. The civil air defense door hand wheel according to claim 1, characterized in that: a connecting sleeve (18) is sleeved on the outer wall of the support rod (3), a limiting block (19) is provided on the connecting sleeve (18), and a limiting groove (20) for installing the ring body (2) is formed in the limiting block (19).

9. The civil air defense door hand wheel according to claim 8, characterized in that: the limiting block (19) and the ring body (2) are fixed by a second fastener (21).

10. The civil air defense door hand wheel according to claim 9, characterized in that: The second fastener (21) is a bolt, a first through hole (22) is formed in the ring body (2), a second through hole (23) matched with the first through hole (22) is formed in the limiting block (19), and the second fastener (21) is matched with a nut after sequentially penetrating through the first through hole (22) and the second through hole (23).

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