Fire-fighting fire alarm device for fire station

Abstract

The invention relates to a fire-fighting fire alarm device for a fire station, and belongs to the technical field of fire alarms, the fire-fighting fire alarm device comprises a protection box, an alarm body is arranged in the protection box, and the alarm body comprises a light-emitting part on the lower side and a sound production part connected with the light-emitting part on the upper side; the bottom of the protection box is provided with a bottom opening for the light-emitting part of the alarm body to move out of the protection box, and the upper side of the protection box is connected with an electric push rod capable of driving the alarm body to move up and down. The fire alarm device has the effect of reducing the phenomenon that the fire alarm device is difficult to give an alarm when a fire occurs due to the influence of the external environment.

Description

Technical Field

[0001] The present application relates to the field of fire alarms, and in particular to a fire alarm device for a fire station. Background Art

[0002] Fire alarm devices are mainly used to sound an alarm when a fire breaks out, thereby prompting people around to take shelter and notifying firefighters to perform fire extinguishing operations.

[0003] The fire alarm device mainly includes a light emitting unit for emitting light for alarm and a sound emitting unit for emitting sound for alarm.

[0004] Since the probability of fire is low, fire alarm devices are often left idle during actual use, which makes them susceptible to the influence of external substances such as dust and water, making it difficult to effectively alarm when a fire actually occurs. Summary of the invention

[0005] In order to reduce the phenomenon that the fire alarm device is affected by the external environment and thus has difficulty in giving an alarm when a fire occurs, the present application provides a fire alarm device for a fire station.

[0006] The fire alarm device for fire stations provided in this application adopts the following technical solution: A fire alarm device for use in fire stations includes a protective box with an alarm body arranged inside the protective box. The alarm body includes a light-emitting portion on the lower side and a sound-emitting portion connected to the light-emitting portion on the upper side. A bottom opening is provided at the bottom of the protective box for the light-emitting portion of the alarm body to move out of the protective box. An electric push rod is connected to the upper side of the protective box and can drive the alarm body to move up and down.

[0007] By adopting the above technical solution, a protective box is provided and the alarm body is placed inside, thereby reducing the possibility of damage to the alarm body due to external water and dust during the long-term placement of the alarm body. In addition, by providing a bottom opening and an electric push rod that drives the light-emitting part on the lower side of the alarm body to move out of the bottom opening of the protective box from the inside of the protective box, the light-emitting part of the alarm body can transmit light to the outside of the protective box to issue an alarm prompt to surrounding people when a fire occurs.

[0008] Optionally, a dust brushing assembly for brushing dust off the light-emitting portion of the alarm body is provided at the bottom opening of the protection box.

[0009] By adopting the above technical solution and providing a dust brush assembly, it is possible to reduce the phenomenon that when a fire occurs, the light-emitting part of the alarm body is covered with dust, making it difficult to transmit light to the eyes of people around and alerting people around.

[0010] Optionally, the dust brush assembly includes a brush arranged at the bottom opening of the protective box.

[0011] By adopting the above technical solution, when the light-emitting part on the lower side of the alarm body is moved out from the bottom opening of the protective box, the brush can brush the light-emitting part on the lower side of the alarm body, thereby realizing the process of brushing the light-emitting part on the lower side of the alarm body.

[0012] Optionally, the outer bottom wall of the protective box is connected to a dust brush ring that rotates around the bottom opening, the brush is fixedly connected to one side of the dust brush ring close to the bottom opening, the inside of the protective box is fixedly connected to a dust brush gear ring that is fixedly connected to the dust brush ring, the dust brush gear ring is meshed with a dust brush gear, the dust brush gear is fixedly connected with a driven gear, the driven gear is meshed with a driving gear, the driving gear is penetrated by and threadedly connected with a movable screw, and the movable screw simultaneously connects the electric push rod and the alarm body.

[0013] By adopting the above technical solution, in the process that the electric push rod drives the moving screw and the alarm body to move downward, the moving screw drives the driving gear and the driven gear to rotate, and the driven gear drives the dust brush gear and the dust brush gear ring to rotate during the rotation, and the dust brush gear ring drives the dust brush ring and the brush to rotate during the rotation, so that when the light-emitting part of the alarm body moves out of the protective box, the brush can rotate to fully brush the light-emitting part of the alarm body.

[0014] Optionally, a plurality of sound leakage holes are provided on the side wall of the protection box, and a shielding component capable of blocking the plurality of sound leakage holes is provided on the outside of the protection box.

[0015] By adopting the above technical solution and providing a sound leakage hole, the sound emitted by the sound-emitting part of the alarm body can be transmitted from the sound leakage hole, thereby reducing the phenomenon that the sound emitted by the sound-emitting part is difficult to be transmitted to the ears of people around to warn the people around, and by providing a shielding component, it is possible to reduce the phenomenon that external water and dust enter the inside of the protective box through the sound leakage holes on the side wall of the protective box, thereby affecting the normal use of the alarm body.

[0016] Optionally, the shielding assembly includes a shielding cloth, and the shielding cloth is used to block the multiple sound leakage holes.

[0017] By adopting the above technical solution, under normal conditions, the sound leakage holes can be blocked by a shielding cloth, and in the event of a fire, multiple sound leakage holes can be exposed by rolling up the shielding cloth, so that the sound emitted by the sound-emitting part can be transmitted from the sound leakage holes to the inside of the protective box to alert people around.

[0018] Optionally, one end of the upper side of the shielding cloth is fixedly connected to a folding bevel gear, one side of the folding bevel gear is meshed with a shielding bevel gear, the shielding bevel gear is penetrated by and threadedly connected to a driving screw, a connecting block is threadedly sleeved on the driving screw, the connecting block is rotationally connected to the shielding bevel gear and the connecting block is also rotationally connected to the folding bevel gear, one end of the driving screw is fixedly connected to a driving gear, one side of the driving gear is meshed with a connecting gear, one side of the connecting gear is fixedly connected to a driven bevel gear, one side of the driven bevel gear is meshed with a driving bevel gear, and the driving bevel gear is fixedly connected to the driven gear.

[0019] By adopting the above technical scheme, in the process of the electric push rod driving the alarm body to move, the electric push rod simultaneously drives the moving screw to rotate, and the moving screw drives the driven gear to rotate while driving the active bevel gear connected to the driven gear to rotate, and the active bevel gear drives the driven bevel gear to rotate during the rotation process, and the driven bevel gear drives the connecting gear to rotate during the rotation process, and the connecting gear drives the connected active gear to rotate during the rotation process, and the active gear drives the driving screw to rotate during the rotation process, and the driving screw drives the connected connecting block to move and the shielding bevel gear to rotate during the rotation process, and the connecting block drives the shielding bevel gear and the folding bevel gear to move while the connecting block moves, and the shielding bevel gear drives the folding bevel gear to rotate during the rotation process, so that the folding bevel gear can move during the rotation process, so that the folding bevel gear can perform a reeling operation on the shielding cloth.

[0020] Optionally, a magnetic block capable of being adsorbed on the outer wall of the protective box is fixedly connected to one side of the shielding cloth.

[0021] By adopting the above technical solution and setting a magnetic block, the shielding cloth can be connected to the protection box through the magnetic block when it is not rolled up, thereby reducing the phenomenon of dust and water moving from the gap between the shielding cloth and the protection box through the sound leakage holes to the inside of the protection box.

[0022] Optionally, an opening is provided on one side of the protection box, and an opening and closing door for sealing the opening is provided at the opening.

[0023] By adopting the above technical solution and setting an opening and closing door, the opening and closing door can be opened when a fire occurs, so that the sound of the sound-emitting part can be transmitted from the opening on one side of the protection box, thereby reducing the phenomenon that the protection box blocks the sound of the sound-emitting part, making it difficult for surrounding personnel to receive the signal emitted by the sound-emitting part in time.

[0024] Optionally, a connecting rope is connected between the opening and closing door and the connecting block.

[0025] By adopting the above technical solution and setting a connecting rope, when the electric push rod drives the alarm body to move downward, the electric push rod can drive the opening and closing door to open through the connecting block, thereby reducing the need for surrounding personnel to manually open the opening and closing door, resulting in the phenomenon of untimely opening of the opening and closing door.

[0026] In summary, the present application includes at least one of the following beneficial technical effects: 1. By providing a protective box and placing the alarm body inside the protective box, the alarm body is less likely to be affected by water and impurities during daily placement, thereby reducing the possibility of the alarm body malfunctioning; 2. By setting up a dust brush assembly, when the light-emitting part on the lower side of the alarm body is moved out of the protection box, it can be brushed by the dust brush assembly, thereby reducing the phenomenon that the light-emitting part is covered with dust and the light emitted by the light-emitting part is difficult to be detected by people around; 3. By opening sound leakage holes and openings on the side walls of the protection box, and arranging a shielding component for shielding the sound leakage holes and an opening and closing door for shielding the openings, and both the shielding component and the opening and closing door can leak the sound leakage holes or openings under the drive of the electric push rod, it is convenient for the sound emitted by the sound-emitting part to be transmitted out of the protection box when a fire occurs. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present application.

[0028] Figure 2 It is a cross-sectional view of the overall structure of an embodiment of the present application.

[0029] Figure 3 yes Figure 2 A partial enlarged schematic diagram of the structure A in the middle.

[0030] Figure 4 yes Figure 1 A partial enlarged schematic diagram of the structure B in the figure.

[0031] Figure 5 It is a schematic diagram of the connection relationship between the shielding cloth and the driving screw in an embodiment of the present application.

[0032] Explanation of the reference numerals in the accompanying drawings: 1. protective box; 11. bottom opening; 12. sound leakage hole; 13. opening and closing door; 131. connecting rope; 132. fixed pulley; 2. alarm body; 21. light-emitting part; 22. sound-emitting part; 3. top protective box; 4. electric push rod; 41. movable plate; 42. movable lead screw; 5. dust brush assembly; 51. dust brush ring; 52. brush; 53. dust brush gear ring; 54. dust brush gear; 55. rotating rod; 56. driven gear; 57. driving gear; 6. shielding assembly; 61. shielding cloth; 611. magnetic block; 62. folding connecting rod; 63. folding bevel gear; 64. shielding bevel gear; 65. driving lead screw; 651. connecting block; 66. driving gear; 67. connecting gear; 68. connecting pulley; 681. connecting belt; 69. driven bevel gear; 691. driving bevel gear. DETAILED DESCRIPTION

[0033] The following is combined with Figure 1 -Attached Figure 5 This application is described in further detail.

[0034] The present application embodiment discloses a fire alarm device for a fire station, referring to Figure 1 and Figure 2 , comprising a protection box 1, wherein an alarm body 2 is provided in the middle of the protection box 1. A light emitting part 21 is provided at the lower side of the alarm body 2, and a sound emitting part 22 is provided at the upper side of the alarm, and the light emitting part 21 is connected to the sound emitting part 22. A bottom opening 11 is provided at the middle of the lower side of the protection box 1, and the bottom opening 11 can allow the light emitting part 21 of the alarm body 2 to pass through.

[0035] A top protection box 3 is provided on the upper side of the protection box 1, and the cross section of the top protection box 3 is set to be rectangular. An electric push rod 4 is provided inside the top protection box 3, and a horizontally arranged moving plate 41 is fixedly connected to the lower end of the electric push rod 4, and the side wall of the moving plate 41 slides and abuts against the adjacent inner wall of the top protection box 3 in the vertical direction. A vertically arranged moving lead screw 42 is fixedly connected to the middle position of the lower surface of the moving plate 41, and the lower end of the moving lead screw 42 passes through the top side wall of the protection box 1 and is fixedly connected to the upper end of the alarm body 2.

[0036] In actual use, the alarm body 2 can be enclosed in the protection box 1 through the cooperation of the protection box 1 and the top protection box 3, thereby protecting the alarm body 2. When a fire occurs, the electric push rod 4 drives the moving plate 41 and the moving lead screw 42 to move downward, and the moving lead screw 42 drives the alarm body 2 to move downward during the downward movement, so that the light-emitting part 21 on the lower side of the alarm body 2 can move out of the protection box 1 from the bottom opening 11 of the protection box 1, thereby realizing the light-emitting alarm process.

[0037] The protection of the alarm body 2 by the protection box 1 and the top protection box 3 can make the alarm body 2 be able to give an alarm in time when a fire occurs even after being placed for a long time.

[0038] Reference Figure 2 and Figure 3 A dust brush assembly 5 is provided at the lower side of the bottom opening 11 of the protection box 1 , and the dust brush assembly 5 is used to brush the light-emitting portion 21 at the lower end of the alarm body 2 .

[0039] By providing the dust brush assembly 5 to brush the light emitting portion 21 of the alarm body 2, the light emitted by the light emitting portion 21 can be better received by the surrounding people.

[0040] The dust brush assembly 5 includes a dust brush ring 51 rotatably connected to the outer side of the bottom opening 11 of the protection box 1, and a brush 52 is fixedly connected to the side of the dust brush ring 51 close to the bottom opening 11 of the protection box 1, and the brush 52 can block the bottom opening 11 of the protection box 1. A dust brush gear ring 53 is rotatably connected to the inner bottom wall of the protection box 1 near the bottom opening 11, and the dust brush gear ring 53 is fixedly connected to the dust brush ring 51.

[0041] A dust brush gear 54 is meshed on one side of the dust brush gear ring 53, a rotating rod 55 is fixedly connected to the middle position of the upper surface of the dust brush gear 54, and a driven gear 56 is fixedly connected to the end of the rotating rod 55 away from the dust brush gear 54. A driving gear 57 is meshed on one side of the driven gear 56, and the driving gear 57 is threadedly sleeved on the movable screw 42.

[0042] On the one hand, by providing the brush 52, the bottom opening 11 of the protective box 1 can be blocked, so that the light-emitting part 21 of the alarm body 2 can be kept clean. On the other hand, in the process of the electric push rod 4 driving the alarm body 2 to move downward, the movable screw 42 drives the driving gear 57 to rotate, and the driving gear 57 drives the driven gear 56 to rotate during the rotation process. The driven gear 56 drives the connected rotating rod 55 to rotate during the rotation process. The rotating rod 55 drives the connected dust brush gear 54 to rotate during the rotation process. The dust brush gear 54 drives the dust brush gear ring 53 to rotate during the rotation process. The dust brush gear ring 53 drives the dust brush ring 51 and the brush 52 to rotate during the rotation process, so that the brush 52 can fully brush the light-emitting part 21 on the lower side of the alarm body 2 during the descent of the alarm body 2.

[0043] Reference Figure 2 A plurality of sound leakage holes 12 are provided on two opposite side walls of the protection box 1 , and the protection box 1 is also connected to a shielding component 6 capable of shielding the plurality of sound leakage holes 12 provided on the two side walls of the protection box 1 .

[0044] By providing the sound leakage hole 12, when a fire occurs, the sound emitted by the sound-emitting part 22 of the alarm body 2 can be transmitted out of the protection box 1 through the sound leakage hole 12, so that people around can easily hear it. By providing the shielding component 6, the shielding component 6 can be used to shield the sound leakage hole 12 in normal times, so that the alarm body 2 located inside the protection box 1 can be less affected by the external environment. When a fire occurs, the shielding component 6 can be opened, so that the sound emitted by the sound-emitting part 22 can be transmitted to the outside of the protection box 1 through the sound leakage hole 12.

[0045] Reference Figure 1 , Figure 2 and Figure 4 The shielding assembly 6 includes shielding cloths 61 arranged on two opposite side walls of the protection box 1 with the sound leakage holes 12. The two shielding cloths 61 are fixedly connected to the adjacent side walls of the protection box 1 facing the same side, and each shielding cloth 61 is fixedly connected to a vertically arranged folding connecting rod 62 on the side away from the fixed connection with the side wall of the protection box 1, and the upper end of each folding connecting rod 62 is fixedly connected to a folding bevel gear 63, and each folding bevel gear 63 is slidably connected to the adjacent side wall of the protection box 1 along the horizontal direction.

[0046] One side of each folding bevel gear 63 is meshed with a shielding bevel gear 64, and the middle of each shielding bevel gear 64 is penetrated and threadedly connected with a driving screw 65, and each driving screw 65 is located on the side of the shielding bevel gear 64 connected to it away from the adjacent folding bevel gear 63 and is threadedly sleeved with a connecting block 651, and each connecting block 651 is set in a rectangular shape and slidably abuts against the adjacent side wall of the protection box 1. Each connecting block 651 is rotationally connected to the adjacent shielding bevel gear 64 and folding bevel gear 63.

[0047] One end of each driving screw 65 is fixedly connected to a driving gear 66, and one side of each driving gear 66 penetrates the adjacent side wall of the protection box 1. A connecting gear 67 is provided on one side of the protection box 1 near each driving gear 66, and each connecting gear 67 meshes with the adjacent driving gear 66. One side of each connecting gear 67 is fixedly connected to a connecting pulley 68, and the two connecting pulleys 68 are correspondingly arranged and connected to the same connecting belt 681.

[0048] A driven bevel gear 69 is fixedly connected to one side of one of the connecting pulleys 68 . A driving bevel gear 691 is meshed with a side of the driven bevel gear 69 close to the driven gear 56 . The driving bevel gear 691 is fixedly connected to the driven gear 56 .

[0049] When the electric push rod 4 drives the movable screw 42 to move downward, and the movable screw 42 drives the driving gear 57 and the driven gear 56 to rotate, the driven gear 56 drives the active bevel gear 691 to rotate, and the active bevel gear 691 drives the meshing driven bevel gear 69 to rotate. During the rotation process, the driven bevel gear 69 drives the connected connecting pulley 68 to rotate, and the connecting pulley 68 drives the connecting belt 681 to rotate, and the connecting belt 681 drives another connecting pulley 68 to rotate at the same time.

[0050] Each connecting pulley 68 drives the connected connecting gear 67 to rotate during the rotation process, and each connecting gear 67 drives the meshing driving gear 66 to rotate during the rotation process, and each driving gear 66 drives the connected driving screw 65 to rotate during the rotation process. Each driving screw 65 drives the connected connecting block 651 to move during the rotation process, and each connecting block 651 drives the connected folding bevel gear 63, the shielding bevel gear 64 and the folding connecting rod 62 to move during the movement process, and each shielding bevel gear 64 rotates during the movement process and drives the meshing folding bevel gear 63 to rotate. Each folding bevel gear 63 drives the connected folding connecting rod 62 to rotate during the rotation process, so that the folding connecting rod 62 moves while rotating, so that the connected shielding cloth 61 can be rolled up, and then the sound leakage hole 12 blocked by the shielding cloth 61 can leak out.

[0051] Reference Figure 5 One side of each shielding cloth 61 connected to the folding connecting rod 62 is connected to a magnetic block 611 that can abut against the protection box 1, and the outer wall of the protection box 1 is made of iron.

[0052] By providing the magnetic block 611 and the protective box 1 being made of iron, the shielding cloth 61 can be connected to the protective box 1 through the magnetic block 611 in daily state, so that the connection between the shielding cloth 61 and the protective box 1 can be more stable.

[0053] Reference Figure 1 and Figure 4 One side of the protection box 1 is provided with an opening, and the opening is provided with two opening and closing doors 13 which are arranged opposite to each other and can block the opening on one side of the protection box 1. The opposite sides of the two opening and closing doors 13 are rotatably connected to the adjacent side walls of the protection box 1.

[0054] A connecting rope 131 is connected between each connecting block 651 and an adjacent opening and closing door 13, and each connecting rope 131 is connected to a side of the adjacent opening and closing door 13 close to another opening and closing door 13. A fixed pulley 132 is installed at the corner of the protection box 1 close to each connecting rope 131, and each connecting rope 131 is connected to the adjacent opening and closing door 13 after being wound around the fixed pulley 132 from the connecting block 651.

[0055] When the electric push rod 4 drives the two connecting blocks 651 to move, each connecting block 651 drives the connected opening and closing door 13 to open through the connecting rope 131, so that when a fire occurs, the sound-emitting part 22 of the alarm body 2 can also transmit the sound to the outside of the protection box 1 from the opening on one side of the protection box 1.

[0056] The implementation principle of a fire alarm device for a fire station in an embodiment of the present application is as follows: under normal conditions, the alarm body 2 inside the protection box 1 can be protected by the protection box 1, the brush 52 and the shielding component 6, thereby reducing the impact of the alarm body 2 on the outside world.

[0057] When a fire occurs, the electric push rod 4 is opened, and the electric push rod 4 drives the movable screw 42 and the alarm body 2 to move downward, so that the light-emitting part 21 on the lower side of the alarm body 2 can pass downward through the bottom opening 11 to be exposed to the outside of the protective box 1, and at the same time, the brush 52 is driven by the dust brush ring 51 to rotate to brush the light-emitting part 21 of the alarm body 2.

[0058] When the movable screw 42 moves downward, it drives the two shielding cloths 61 to reel in, so that the multiple sound leakage holes 12 on both sides of the protection box 1 can leak out, and while the shielding cloths 61 are reeled in, the connecting block 651 drives the opening and closing door 13 to open through the connecting rope 131, so that the sound-emitting part 22 of the alarm can transmit the sound to the outside of the protection box 1 through the multiple sound leakage holes 12 and the opening on one side of the protection box 1.

[0059] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A fire alarm device for a fire station, characterized in that: The invention comprises a protection box (1), wherein an alarm body (2) is arranged inside the protection box (1), wherein the alarm body (2) comprises a light-emitting portion (21) at the lower side and a sound-emitting portion (22) connected to the light-emitting portion (21) at the upper side, wherein a bottom opening (11) is provided at the bottom of the protection box (1) for the light-emitting portion (21) of the alarm body (2) to be moved out of the protection box (1), and an electric push rod (4) capable of driving the alarm body (2) to move up and down is connected to the upper side of the protection box (1); A dust brushing assembly (5) for brushing dust from the light-emitting portion (21) of the alarm body (2) is provided at the bottom opening (11) of the protection box (1).

2. A fire alarm device for a fire station according to claim 1, characterized in that: The dust brush assembly (5) comprises a brush (52) arranged at the bottom opening (11) of the protection box (1).

3. A fire alarm device for a fire station according to claim 2, characterized in that: The outer bottom wall of the protection box (1) is connected to a dust brush ring (51) which rotates around the bottom opening (11), and the brush (52) is fixedly connected to the side of the dust brush ring (51) close to the bottom opening (11). The inside of the protection box (1) is fixedly connected to a dust brush gear ring (53) which is fixedly connected to the dust brush ring (51), and the dust brush gear ring (53) is meshed with a dust brush gear (54), and the dust brush gear (54) is fixedly connected with a driven gear (56), and the driven gear (56) is meshed with a driving gear (57), and the driving gear (57) is penetrated by and threadedly connected with a movable screw (42), and the movable screw (42) simultaneously connects the electric push rod (4) and the alarm body (2).

4. A fire alarm device for a fire station according to claim 3, characterized in that: A plurality of sound leakage holes (12) are provided on the side wall of the protection box (1), and a shielding component (6) capable of blocking the plurality of sound leakage holes (12) is provided outside the protection box (1).

5. A fire alarm device for a fire station according to claim 4, characterized in that: The shielding assembly (6) comprises a shielding cloth (61), and the shielding cloth (61) is used to block the plurality of sound leakage holes (12).

6. A fire alarm device for a fire station according to claim 5, characterized in that: A folding bevel gear (63) is fixedly connected to one end of the upper side of the shielding cloth (61), and a shielding bevel gear (64) is meshed on one side of the folding bevel gear (63). A driving screw (65) is penetrated and threadedly connected to the shielding bevel gear (64). A connecting block (651) is threadedly sleeved on the driving screw (65). The connecting block (651) is rotationally connected to the shielding bevel gear (64) and the connecting block (651) is rotationally connected to the folding bevel gear (63). One end of the driving screw (65) is fixedly connected to a driving gear (66), and a connecting gear (67) is meshed on one side of the driving gear (66). A driven bevel gear (69) is fixedly connected on one side of the driven bevel gear (69). A driving bevel gear (691) is meshed on one side of the driven bevel gear (69), and the driving bevel gear (691) is fixedly connected to the driven gear (56).

7. A fire alarm device for a fire station according to any one of claims 5 or 6, characterized in that: A magnetic attraction block (611) capable of being adsorbed on the outer wall of the protection box (1) is fixedly connected to one side of the shielding cloth (61).

8. A fire alarm device for a fire station according to claim 6, characterized in that: An opening is provided on one side of the protection box (1), and an opening and closing door (13) for sealing the opening is provided at the opening.

9. A fire alarm device for a fire station according to claim 8, characterized in that: A connecting rope (131) is connected between the opening and closing door (13) and the connecting block (651).

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