Commercial vehicle cab

Abstract

The invention discloses a commercial vehicle cab, and relates to the technical field of commercial vehicle cables.The commercial vehicle cab comprises a cab, a connecting plate, a rear row seat and a camera, a buffer protection mechanism is fixedly installed on the outer side of the cab in an embedded mode, and side door bodies are symmetrically installed on the two sides of the cab. According to the commercial vehicle cab, the connecting rod is arranged, so that the backrest capable of being put down can drive the connecting rod to rotate in the fixing block through the connecting mechanism for toppling treatment, and at the moment, through mutual cooperation of a connecting ring, a positioning plate and an inserting rod, the angle of the backrest capable of being put down can be locked after being adjusted by 90 degrees; according to the arrangement of the damping connecting shaft, it is ensured that when a person lies on the surfaces of the rear-row seat and the co-driver seat to have a rest, the collapsible backrest cannot collapse, and through the arrangement of the damping connecting shaft, after the collapsible backrest is put down, the auxiliary supporting mechanism can be opened through rotation of the damping connecting shaft to assist in supporting the collapsible backrest.

Description

Technical Field

[0001] This invention relates to the field of commercial vehicle cab technology, specifically to a commercial vehicle cab. Background Technology

[0002] The cab of a commercial vehicle is an important component of the body of a freight truck and special-purpose vehicle, serving as the driver's workplace. It mainly consists of the cab shell, doors, windows, interior components, seats, and air conditioning system. However, current commercial vehicle cabs still have the following shortcomings: First, the existing commercial vehicle cab space utilization rate is low. In actual use, the driver's area and rest area are separated, which restricts the driver's movement when carrying out long-distance transportation. As a result, when the driver needs to rest, it takes a long time to change positions, which reduces the driver's rest time and easily increases driver fatigue. Secondly, the existing commercial vehicle cabs lack adequate safety protection, which makes the driver more susceptible to serious injury in the event of a frontal collision due to the lack of a buffer structure, thus presenting certain defects in use. Summary of the Invention

[0003] The purpose of this invention is to provide a commercial vehicle cab to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, the present invention provides the following technical solution: a commercial vehicle cab, comprising a driver's compartment, a connecting plate, rear seats, and cameras. A buffer protection mechanism is embedded and fixedly installed on the outer side of the driver's compartment, and side doors are symmetrically installed on both sides of the driver's compartment. A base is fixedly installed on the inner bottom surface of the driver's compartment, and a driver's seat is fixedly installed on the top of the base. The connecting plate is fixedly installed on the side of the driver's seat, and a support column is fixedly installed on the upper end of the connecting plate. A storage worktable is installed on the other side of the driver's seat. The rear seats are symmetrically and movably installed on the top of the base, and a passenger seat is fixedly installed on the top of the base. A locking groove is provided on the top of the base. The cameras are symmetrically embedded and installed on the A-pillars of the driver's compartment. The buffer protection mechanism includes a protective shell, and a collapsible honeycomb aluminum layer is attached and fixedly installed on the inner surface of the protective shell.

[0005] Furthermore, the retractable workbench includes a connecting block, and a first connecting shaft is rotatably connected inside the connecting block. A connecting strip is fixedly installed at the end of the first connecting shaft, and a second connecting shaft is rotatably connected to the top of the connecting strip. Meanwhile, the workbench body is fixedly installed at the end of the second connecting shaft. An L-shaped support plate is attached to the bottom of the connecting strip, and a magnetic stone is fixedly installed on the side of the workbench body.

[0006] Furthermore, the end of the connecting block is fixedly connected to the outside of the driver's seat, and the inside of the connecting block is rotatably connected to the end of the first connecting shaft. The other end of the first connecting shaft is fixedly connected to the inside of the connecting strip, and the connecting strip and the connecting block form a rotating structure through the first connecting shaft.

[0007] Furthermore, there are two magnetic stones, which are fixedly installed on the side of the connecting strip and the main body of the workbench, respectively, and the installation positions of the two magnetic stones are corresponding.

[0008] Furthermore, the rear seat includes a first seat body, and a connecting column is fixedly connected to the bottom of the first seat body. The bottom of the connecting column is rotatably connected to the interior of the base. Arc-shaped sliders are symmetrically installed on the bottom of the first seat body. A micro-adjustable backrest is rotatably connected to the end of the first seat body. A locking mechanism is installed on the outer side of the first seat body. Storage holes are symmetrically opened on the outer side of the first seat body. A pull rod is movably connected inside the storage hole. A pull plate is fixedly connected to the end of the pull rod.

[0009] Furthermore, the bottom of the first seat body is fixedly connected to the top of the arc-shaped slider, and the bottom of the arc-shaped slider is slidably connected to the top of the base, and the first seat body forms a sliding structure with the base through the arc-shaped slider.

[0010] Furthermore, the locking mechanism includes a fixed plate, and a locking rod is movably connected through the interior of the fixed plate. A pull ring is fixedly connected to the top of the locking rod, and a return spring is sleeved on the outside of the locking rod.

[0011] Furthermore, the top of the return spring is fixedly connected to the bottom of the pull ring, and the bottom of the return spring is fixedly connected to the top of the fixing plate, and the pull ring forms an elastic structure with the fixing plate through the return spring.

[0012] Furthermore, the passenger seat includes a second seat body, and a fixing block is symmetrically fixedly connected to the end of the second seat body. A connecting rod is rotatably connected inside the fixing block, and a connecting mechanism is fixedly connected to the outer surface of the connecting rod. At the same time, a reclining backrest is fixedly installed at the end of the connecting mechanism. Connecting rings are symmetrically fixedly installed at both ends of the fixing block, and a positioning plate is installed on the outer side of the connecting ring. An insert rod is movably installed inside the positioning plate, and the end of the insert rod is engaged with the interior of the second seat body.

[0013] Furthermore, the commercial vehicle cab is equipped with a voice control system, which includes: The voice receiving module is used to automatically receive and recognize the voice commands issued by the driver, and then send signals to the corresponding module for subsequent module operation based on the recognized content. The LED reading light control module is used to automatically control the switch of the LED reading light above the driver's head, so that the driver can automatically turn on the LED reading light for auxiliary lighting when working. The driver's seat control module is used to control the backrest tilt angle of the driver's seat, so that the driver can be more comfortable when working. The curtain control module is used to automatically control the opening and closing of the curtains to ensure that people are not affected by external light when resting, thus making people more comfortable.

[0014] This invention provides a commercial vehicle cab with the following advantages: 1. This invention utilizes a connecting rod to allow the reclining backrest to tilt by rotating the connecting rod within a fixed block via a connecting mechanism. The interaction of the connecting ring, positioning plate, and insert rod ensures that the reclining backrest angle is locked after being adjusted to 90 degrees. This prevents the reclining backrest from collapsing when passengers are resting on the rear seats or front passenger seat. Furthermore, a damping connecting shaft allows the auxiliary support mechanism to open and support the reclining backrest after it is reclined, and the user can also pull the pull plate to further tilt it. The lever moves outward to assist in supporting and fixing the reclining backrest, thereby further ensuring the support of the reclining backrest and preventing it from collapsing when the user is resting. At the same time, since the passenger seat backrest can be fully flattened and connected with the rear flip-up seats to form a 1.8m×0.7m temporary bed, the driver can also quickly set up the temporary bed by folding down the passenger seat backrest when fatigued. This makes it easier for the driver to take a temporary rest and thus increases the driver's rest time to a certain extent (at least 18 minutes of rest can be taken within 20 minutes of stopping when the Beidou alarm is triggered).

[0015] 2. This invention, through the setting of a first connecting shaft and a second connecting shaft, allows the main body of the workbench to be quickly unfolded or stored by the driver. Then, through the cooperation of the connecting plate and the support column, the support column can provide auxiliary support when the main body of the workbench is fully unfolded, so that the main body of the workbench will not collapse when the driver places items such as laptops. Furthermore, through the cooperation of the LED reading light control module and the driver's seat control module, the driver can work more comfortably. Moreover, the cooperation of the magnetic stone and the L-shaped support plate ensures that the storage workbench does not occupy too much aisle space when stored to the side of the driver's seat, thereby effectively improving the space utilization of the cab.

[0016] 3. The present invention, through the setting of the buffer protection mechanism, enables the vehicle to absorb energy through multi-stage deformation when a collision occurs, reducing the peak acceleration by 30%. Furthermore, through the cooperation of the set camera and the OLED screen inside the cab, the A-pillar of the cab adopts transparent display technology to eliminate the blind spot of the traditional A-pillar, thereby automatically highlighting pedestrians or vehicles on the side when turning. Attached Figure Description

[0017] Figure 1 This is a frontal three-dimensional structural diagram of a commercial vehicle cab according to the present invention; Figure 2 This is a front sectional three-dimensional structural diagram of a commercial vehicle cab according to the present invention; Figure 3 This invention relates to a commercial vehicle cab. Figure 2 Enlarged schematic diagram of the structure at point A in the middle; Figure 4 This is a schematic diagram of the passenger-rear seat splicing structure of a commercial vehicle cab according to the present invention; Figure 5 This is a three-dimensional structural diagram of the passenger-rear seat in a commercial vehicle cab according to the present invention. Figure 6 This is a schematic diagram of the unfolded three-dimensional structure of the main driver's seat-workbench of a commercial vehicle cab according to the present invention; Figure 7 This is a rear-view three-dimensional structural diagram of a retractable workbench in a commercial vehicle cab according to the present invention. Figure 8 This invention relates to a commercial vehicle cab. Figure 7 Enlarged schematic diagram of the structure at point B; Figure 9 This is a schematic diagram of the three-dimensional structure of a collapsible honeycomb aluminum layer protective shell for a commercial vehicle cab according to the present invention. Figure 10 This is a schematic diagram of the voice control process in a commercial vehicle cab according to the present invention.

[0018] In the diagram: 1. Cockpit; 2. Buffer and protection mechanism; 21. Protective shell; 22. Collapsible honeycomb aluminum layer; 3. Side door; 4. Base; 5. Driver's seat; 6. Connecting plate; 7. Support column; 8. Retractable workbench; 81. Connecting block; 82. First connecting shaft; 83. Connecting strip; 84. Second connecting shaft; 85. Workbench body; 86. L-shaped support plate; 87. Magnetic stone; 9. Rear seat; 91. First seat body; 92. Connecting column; 93. Arc-shaped slider; 94. Micro-adjustable backrest; 95. 951. Locking mechanism; 952. Fixing plate; 953. Locking rod; 954. Pull ring; 955. Return spring; 96. Storage hole; 97. Pull rod; 98. Pull plate; 10. Passenger seat; 101. Second seat body; 102. Fixing block; 103. Connecting rod; 104. Connecting mechanism; 105. Retractable backrest; 106. Connecting ring; 107. Positioning plate; 108. Insert rod; 109. Storage slot; 110. Damping connecting shaft; 111. Auxiliary support mechanism; 11. Locking slot; 12. Camera. Detailed Implementation

[0019] The embodiments of the present invention will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of the invention.

[0020] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 10As shown, a commercial vehicle cab includes a driver's compartment 1, a connecting plate 6, rear seats 9, and a camera 12. A buffer protection mechanism 2 is embedded and fixedly installed on the outer side of the driver's compartment 1, and side doors 3 are symmetrically installed on both sides of the driver's compartment 1. A base 4 is fixedly installed on the inner bottom surface of the driver's compartment 1, and a driver's seat 5 is fixedly installed on the top of the base 4. The connecting plate 6 is fixedly installed on the side of the driver's seat 5, and a support column 7 is fixedly installed on the upper end of the connecting plate 6. A storage worktable 8 is installed on the other side of the driver's seat 5. The rear seats 9 are symmetrically and movably installed on the top of the base 4. The rear seats 9 include a first seat body 91, and a connecting column 92 is fixedly connected to the bottom of the first seat body 91. The bottom of the connecting column 92 is connected to the base 4. The first seat body 91 has an internal rotating connection, and symmetrically mounted arc-shaped sliders 93 are installed on the bottom of the first seat body 91. The bottom of the first seat body 91 is fixedly connected to the top of the arc-shaped sliders 93, and the bottom of the arc-shaped sliders 93 is slidably connected to the top of the base 4. The first seat body 91 and the base 4 form a sliding structure through the arc-shaped sliders 93. By setting the first seat body 91 and the base 4 into a sliding structure, the first seat body 91 can easily rotate along the top of the base 4. At the same time, a finely adjustable backrest 94 is rotatably connected to the end of the first seat body 91. A locking mechanism 95 is installed on the outside of the first seat body 91. The locking mechanism 95 includes a fixing plate 951, and a locking rod 952 is movably connected through the inside of the fixing plate 951. Furthermore, a pull ring 953 is fixedly connected to the top of the locking rod 952, and a return spring 954 is sleeved on the outer side of the locking rod 952. The top of the return spring 954 is fixedly connected to the bottom of the pull ring 953, and the bottom of the return spring 954 is fixedly connected to the top of the fixing plate 951. The pull ring 953 and the fixing plate 951 form an elastic structure through the return spring 954. The elastic structure of the pull ring 953 and the fixing plate 951 makes it easy for the pull ring 953 to drive the locking rod 952 into the interior of the base 4 to complete the position locking operation. The outer side of the first seat body 91 is symmetrically provided with storage holes 96, and a pull rod 97 is movably connected inside the storage hole 96. The end of the pull rod 97 is fixedly connected to a pull plate 98, and the bottom... A passenger seat 10 is fixedly installed on the top of seat 4. The passenger seat 10 includes a second seat body 101, and a fixing block 102 is symmetrically fixedly connected to the end of the second seat body 101. A connecting rod 103 is rotatably connected inside the fixing block 102, and a connecting mechanism 104 is fixedly connected to the outer surface of the connecting rod 103. A reclining backrest 105 is fixedly installed at the end of the connecting mechanism 104. Connecting rings 106 are symmetrically fixedly installed at both ends of the fixing block 102, and a positioning plate 107 is installed on the outer side of the connecting ring 106. An insert rod 108 is movably installed inside the positioning plate 107, and the end of the insert rod 108 is engaged with the inside of the second seat body 101. A locking groove 11 is provided on the top of the base 4.Cameras 12 are symmetrically embedded in the A-pillars of the cockpit 1.

[0021] like Figure 2 , Figure 6 , Figure 7 , Figure 8 and Figure 9 As shown, a buffer protection mechanism 2 is embedded and fixedly installed on the outer side of the cockpit 1, and side doors 3 are symmetrically installed on both sides of the cockpit 1. A base 4 is fixedly installed on the inner bottom surface of the cockpit 1, and a driver's seat 5 is fixedly installed on the top of the base 4. A connecting plate 6 is fixedly installed on the side of the driver's seat 5, and a support column 7 is fixedly installed on the upper end of the connecting plate 6. A retractable workbench 8 is installed on the other side of the driver's seat 5. The retractable workbench 8 includes a connecting block 81, and a first connecting shaft 82 is rotatably connected inside the connecting block 81. A connecting strip 83 is fixedly installed at the end of the first connecting shaft 82. The end of the connecting block 81 is fixedly connected to the outer side of the driver's seat 5, and the interior of the connecting block 81 is rotatably connected to the end of the first connecting shaft 82. The other end of the first connecting shaft 82 is fixedly connected to the inner side of the connecting strip 83. The connecting strip 83 forms a rotating structure with the connecting block 81 through the first connecting shaft 82. The connecting strip 83 and connecting block 81 of the moving structure make it easy for the driver to quickly adjust the angle of the connecting strip 83. The top of the connecting strip 83 is rotatably connected to the second connecting shaft 84, and the end of the second connecting shaft 84 is fixedly installed with the main body of the worktable 85. The bottom of the connecting strip 83 is attached to the L-shaped support plate 86, and the side of the main body of the worktable 85 is fixedly installed with two magnetic stones 87. The two magnetic stones 87 are fixedly installed on the side of the connecting strip 83 and the main body of the worktable 85, respectively, and the installation positions of the two magnetic stones 87 are corresponding. The rear seats 9 are symmetrically and movablely installed on the top of the base 4, and the passenger seat 10 is fixedly installed on the top of the base 4. The top of the base 4 is provided with a locking groove 11. The camera 12 is symmetrically embedded in the A-pillar of the cockpit 1. The buffer protection mechanism 2 includes a protective shell 21, and the inner surface of the protective shell 21 is attached to and fixedly installed with a collapsible honeycomb aluminum layer 22.

[0022] like Figure 10 As shown, a commercial vehicle cab is used in a voice control system, which includes: The voice receiving module is used to automatically receive and recognize the voice commands issued by the driver, and then send signals to the corresponding modules to perform subsequent module operation based on the recognized content. The LED reading light control module is used to automatically control the switch of the LED reading light above the driver's head, so that the driver can automatically turn on the LED reading light for auxiliary lighting when working. The driver's seat control module is used to control the backrest tilt angle of the driver's seat, thereby making the driver more comfortable while working. The curtain control module is used to automatically control the opening and closing of the curtains to ensure that people are not affected by external light while resting, thus making their rest more comfortable.

[0023] In summary, combining Figures 1-10 As shown, the working principle of the commercial vehicle cab is as follows: First, when the user needs to work, he / she grasps the main body of the workbench 85 and unfolds it by rotating the first connecting shaft 82 and the second connecting shaft 84. At this time, the end of the main body of the workbench 85 is supported by the support column 7 at the end of the connecting plate 6. Then, the driver issues a voice command. At this time, the voice receiving module receives the voice information and distinguishes it. Then, the received signal is sent to the LED reading light control module, so that the hidden LED reading light above the driver's head is automatically turned on to assist the driver in working. Then, the signal is sent to the driver's seat control module, so that the driver's seat control module controls the backrest angle of the driver's seat 5 to adjust, making the driver more comfortable when working. Secondly, when the driver needs to rest, the driver sends a voice command. When the voice receiving module receives the voice information, it automatically distinguishes it and sends the signal to the curtain control module, causing the motor controlling the curtain cord to automatically run and pull up the curtain. Then, the driver grasps the pull plate 98 to pull the pull rod 97 out of the storage hole 96, and then grasps the auxiliary support mechanism 111, which drives the damping connecting shaft 110 to rotate inside the storage groove 109, thereby unfolding the auxiliary support mechanism 111 from inside the storage groove 109. Finally, the driver removes the insertion rod 108 to... The connecting mechanism 104 drives the connecting rod 103 to rotate inside the fixed block 102, thereby causing the reclining backrest 105 to tilt towards the rear seat 9. At this time, the pull rod 97 and the pull plate 98 automatically catch the tilted reclining backrest 105. Meanwhile, the bottom of the auxiliary support mechanism 111 fits against the top of the base 4 to complete the support work for the reclining backrest 105. Then, the driver inserts the insertion rod 108 through the positioning plate 107 into the interior of the second seat body 101 to complete the locking work, thereby completing the quick assembly of the simple rest bed. Finally, when the driver rests on the surface of the second seat body 101, the reclining backrest 105 and the first seat body 91, the reclining backrest 105 will not collapse due to the cooperation of the pull rod 97, the pull plate 98 and the auxiliary support mechanism 111, thus making the driver more comfortable when resting.

[0024] The embodiments of the present invention are given for illustrative and descriptive purposes only, and are not intended to be exhaustive or to limit the invention to the forms disclosed. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described in order to better illustrate the principles and practical application of the invention, and to enable those skilled in the art to understand the invention and to design various embodiments with various modifications suitable for a particular purpose.

Claims

1. A commercial vehicle cab, comprising a driver's compartment (1), a connecting plate (6), rear seats (9), and a camera (12), characterized in that, A buffer protection mechanism (2) is embedded and fixedly installed on the outside of the cockpit (1), and side doors (3) are symmetrically installed on both sides of the cockpit (1). A base (4) is fixedly installed on the bottom inner surface of the cockpit (1), and a driver's seat (5) is fixedly installed on the top of the base (4). A connecting plate (6) is fixedly installed on the side of the driver's seat (5), and a support column (7) is fixedly installed on the upper end of the connecting plate (6). A storage worktable (8) is installed on the other side of the driver's seat (5). The rear seats (9) are symmetrically and movablely installed on the top of the base (4), and a passenger seat (10) is fixedly installed on the top of the base (4). A locking groove (11) is opened on the top of the base (4). The camera (12) is symmetrically embedded and installed on the A-pillar of the cockpit (1). The buffer protection mechanism (2) includes a protective shell (21), and a collapsible honeycomb aluminum layer (22) is fixedly installed on the inner surface of the protective shell (21).

2. A commercial vehicle cab according to claim 1, characterized in that, The storage workbench (8) includes a connecting block (81), and a first connecting shaft (82) is rotatably connected inside the connecting block (81). A connecting strip (83) is fixedly installed at the end of the first connecting shaft (82), and a second connecting shaft (84) is rotatably connected to the top of the connecting strip (83). Meanwhile, a workbench body (85) is fixedly installed at the end of the second connecting shaft (84). An L-shaped support plate (86) is attached to the bottom of the connecting strip (83), and a magnetic stone (87) is fixedly installed on the side of the workbench body (85).

3. A commercial vehicle cab according to claim 2, characterized in that, The end of the connecting block (81) is fixedly connected to the outside of the driver's seat (5), and the inside of the connecting block (81) is rotatably connected to the end of the first connecting shaft (82). The other end of the first connecting shaft (82) is fixedly connected to the inside of the connecting strip (83). The connecting strip (83) forms a rotating structure with the connecting block (81) through the first connecting shaft (82).

4. A commercial vehicle cab according to claim 2, characterized in that, The number of magnetic stones (87) is two. The two magnetic stones (87) are fixedly installed on the side of the connecting strip (83) and the main body of the workbench (85), respectively, and the installation positions of the two magnetic stones (87) are corresponding.

5. A commercial vehicle cab according to claim 1, characterized in that, The rear seat (9) includes a first seat body (91), and a connecting column (92) is fixedly connected to the bottom of the first seat body (91). The bottom of the connecting column (92) is rotatably connected to the inside of the base (4). Arc-shaped sliders (93) are symmetrically installed on the bottom of the first seat body (91). A micro-adjustable backrest (94) is rotatably connected to the end of the first seat body (91). A locking mechanism (95) is installed on the outside of the first seat body (91). Storage holes (96) are symmetrically opened on the outside of the first seat body (91). A pull rod (97) is movably connected inside the storage hole (96). A pull plate (98) is fixedly connected to the end of the pull rod (97).

6. A commercial vehicle cab according to claim 5, characterized in that, The bottom of the first seat body (91) is fixedly connected to the top of the arc-shaped slider (93), and the bottom of the arc-shaped slider (93) is slidably connected to the top of the base (4). The first seat body (91) and the base (4) form a sliding structure through the arc-shaped slider (93).

7. A commercial vehicle cab according to claim 5, characterized in that, The locking mechanism (95) includes a fixing plate (951), and a locking rod (952) is movably connected through the interior of the fixing plate (951). A pull ring (953) is fixedly connected to the top of the locking rod (952), and a return spring (954) is sleeved on the outside of the locking rod (952).

8. A commercial vehicle cab according to claim 7, characterized in that, The top of the return spring (954) is fixedly connected to the bottom of the pull ring (953), and the bottom of the return spring (954) is fixedly connected to the top of the fixing plate (951). The pull ring (953) forms an elastic structure with the fixing plate (951) through the return spring (954).

9. A commercial vehicle cab according to claim 1, characterized in that, The passenger seat (10) includes a second seat body (101), and a fixing block (102) is symmetrically fixedly connected to the end of the second seat body (101). A connecting rod (103) is rotatably connected inside the fixing block (102), and a connecting mechanism (104) is fixedly connected to the outer surface of the connecting rod (103). At the same time, a reclining backrest (105) is fixedly installed at the end of the connecting mechanism (104). A connecting ring (106) is symmetrically fixedly installed at both ends of the fixing block (102), and a positioning plate (107) is installed on the outer side of the connecting ring (106). A plug rod (108) is movably installed inside the positioning plate (107), and the end of the plug rod (108) is engaged with the inside of the second seat body (101).

10. A commercial vehicle cab according to claim 1, characterized in that, The commercial vehicle cab is equipped with a voice control system, which includes: The voice receiving module is used to automatically receive and recognize the voice commands issued by the driver, and then send signals to the corresponding module for subsequent module operation based on the recognized content. The LED reading light control module is used to automatically control the switch of the LED reading light above the driver's head, so that the driver can automatically turn on the LED reading light for auxiliary lighting when working. The driver's seat control module is used to control the backrest tilt angle of the driver's seat, so that the driver can be more comfortable when working. The curtain control module is used to automatically control the opening and closing of the curtains to ensure that people are not affected by external light when resting, thus making people more comfortable.

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