Multifunctional small table board for rail transit

Abstract

The invention discloses a multifunctional small table plate for rail transit, which relates to the technical field of high-speed rail equipment and comprises a support plate, a driving motor, a threaded rod, a threaded sleeve, a main table plate, an auxiliary table plate and an intermittent control assembly. The driving motor drives the threaded sleeve to move, and the first connecting rod drives the main table plate to rotate and unfold around the connecting support. The auxiliary table board can be stored in the main table board in a sliding mode and pulled outwards when the auxiliary table board needs to be prolonged. In the drawing process of the auxiliary table plate, a linkage mechanism drives a control rod to move downwards, a triangular clamping head crosses and hooks a control pushing head to achieve automatic segmented locking, retraction caused by external force or bumping is effectively prevented, and use stability is guaranteed. And during withdrawing, the unlocking mechanism needs to be slightly pulled and triggered to enable the L-shaped connecting rod to be separated from the control groove, and then the L-shaped connecting rod can be smoothly pushed back. One-key unfolding of the main table board and flexible length adjustment and reliable self-locking of the auxiliary table board are achieved, the structure is compact, operation is safe and convenient, and the table is particularly suitable for the rail transit environment.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of high-speed rail equipment, in particular to a multifunctional small table plate for rail transit. BACKGROUND

[0002] In the carriages of rail transit (such as high-speed rail, subway, train), the foldable small table plate installed behind the seat is an important facility for passengers to provide convenience, which is used for placing articles, dining or working. However, such small table plates in the prior art generally have the following significant defects:

[0003] 1. Single function and fixed size: Most small table plates are single fixed size plates, and the area cannot be adjusted after unfolding. When passengers need to place more articles, use larger electronic devices or share meals with multiple people, the fixed size table plate often appears insufficient in space and cannot meet the diversified use requirements.

[0004] 2. Poor stability of extendable table plate: A small number of small table plates with extension function usually use simple pull-out or folding structure for the auxiliary table plate. Such structure is prone to accidental retraction or sliding due to external force or inertia during train operation, especially when braking or turning, which may cause articles placed on the table plate to slide off or even be damaged, posing a safety hazard and poor user experience.

[0005] 3. Contradiction between space utilization and structure: In the limited carriage space, the small table plate needs to be as compact as possible when not in use, and provide sufficient and stable use area when unfolded. Existing designs often fail to balance these two points, especially when the extension function is added, the structure tends to become complex and heavy or the reliability decreases.

[0006] Therefore, the present application provides a multifunctional small table plate for rail transit to solve one or more of the above problems. SUMMARY

[0007] (I) Technical problems solved

[0008] In view of the deficiencies of the prior art, the present application provides a multifunctional small table plate for rail transit to solve the problems raised in the background art.

[0009] (II) Technical solutions

[0010] To achieve the above purpose, the present application is implemented by the following technical solutions, including: a support plate, a drive motor is installed on the support plate, a threaded rod is provided on the output shaft of the drive motor, a threaded sleeve is sleeved on the outer wall of the threaded rod, a main table plate is installed on the support plate through a connecting support, the threaded sleeve and the main table plate are connected through a first connecting rod, and an auxiliary table plate is movably arranged in the main table plate through an intermittent control assembly.

[0011] Preferably, the two groups of fixed blocks one are fixedly connected with the support plate, one end of the threaded rod is rotatably connected with one of the two groups of fixed blocks one, the other end of the threaded rod is fixedly connected with the output shaft of the driving motor, and the output shaft of the driving motor is movably penetrated through the fixed block one at the bottom.

[0012] Preferably, the support roller is installed on the side of the threaded sleeve close to the support plate, one end of the first connecting rod is hingedly connected with the main table plate, and the other end of the first connecting rod is hingedly connected with the threaded sleeve.

[0013] Preferably, one end of the connecting support is fixedly connected with the support plate, and the other end of the connecting support is hingedly connected with the main table plate.

[0014] Preferably, a plurality of groups of control grooves are equidistantly arranged on the inner wall of the main table plate, a bottom plate is fixedly arranged at the bottom of the auxiliary table plate, an avoiding groove is arranged between the bottom of the bottom plate and the inner wall of the main table plate, and the walking roller is installed on the outer wall of the auxiliary table plate through the driving shaft.

[0015] Preferably, the intermittent control assembly comprises a driving gear, the driving gear is fixedly sleeved on the outer wall of the driving shaft away from the walking roller, two groups of fixed supports one are fixedly connected with the bottom plate, and a fixed plate one is fixedly arranged between the two groups of fixed supports one.

[0016] Preferably, a limiting guide groove one and a limiting guide groove two are arranged on the fixed support one, a through hole is arranged on the fixed plate one, one of the two groups of fixed supports one is fixedly provided with a hinged seat on the side close to the driving gear, a Z-shaped connecting rod is rotatably connected with the hinged seat, one end of the Z-shaped connecting rod is engaged with the driving gear, and the other end of the Z-shaped connecting rod is located at the top of the pressing plate.

[0017] Preferably, a second connecting rod is slidably installed in each limiting guide groove two, a control push head is fixedly connected with the end of the second connecting rod, a connecting spring one is sleeved on the outer wall of the second connecting rod, and the two ends of the connecting spring one are fixedly connected with the control push head and the fixed support one respectively.

[0018] Preferably, a U-shaped piece one is fixedly arranged at the bottom of the pressing plate, a fixed plate two is fixedly arranged on the outer wall of a U-shaped piece two, the U-shaped piece one is slidably arranged in the U-shaped piece two, the U-shaped piece one and the inner wall of the U-shaped piece two are connected through a connecting spring two, two groups of installation grooves are symmetrically arranged on the top of the fixed plate one, one end of a connecting spring three is fixedly arranged in the installation groove, the other end of the connecting spring three is fixedly connected with the fixed plate two, one end of a control rod is fixedly connected with the bottom of the U-shaped piece two, the other end of the control rod is movably penetrated through the through hole, two groups of triangular clamping heads are symmetrically fixedly arranged on the end of the control rod penetrating through the through hole, a horizontal section of an L-shaped connecting rod is rotatably connected with the outer wall of the front side of the control rod, and a cam follower is arranged on the vertical section of the L-shaped connecting rod.

[0019] Preferably, the third connecting rod is movably arranged in the two groups of limiting guide grooves respectively at two ends, the top of the third connecting rod is upwardly extended to form two groups of inclined pushing heads symmetrically, one end of the connecting piece is rotatably connected with the front side of the third connecting rod, the other end of the connecting piece is movably provided with a rolling bearing, and the control rod is fixedly provided with a blocking block one on one side.

[0020] Compared with the prior art, the present application has the following beneficial effects:

[0021] The main table plate can be stably unfolded by one key through the motor drive, and the auxiliary table plate can be flexibly pulled out in the main table plate to steplessly / segmentally extend the use area, so that the space adaptability and practicality are greatly improved; the specially designed pure mechanical self-locking mechanism can automatically lock the auxiliary table plate in multiple preset positions during the pulling-out process of the auxiliary table plate, effectively preventing accidental retraction caused by external force or bumping during use, and ensuring the use stability; at the same time, the auxiliary table plate needs to be specifically unlocked (pulled out and then pushed back) when being retracted, which avoids misoperation and improves the safety and user experience; the overall structure is compact, stable and durable, and is very suitable for the high-frequency use demand in the rail transit environment. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 It is a main view structural schematic diagram of the present application;

[0023] Figure 2 It is an intermittent control assembly installation position schematic diagram in the present application;

[0024] Figure 3 It is a main view structural schematic diagram of the intermittent control assembly in the present application;

[0025] Figure 4 It is a part of the fixed support three-dimensional structure schematic diagram in the present application;

[0026] Figure 5 It is a third connecting rod part three-dimensional structure schematic diagram in the present application;

[0027] Figure 6 It is a part of the auxiliary table plate elevation structure schematic diagram in the present application;

[0028] Figure 7 It is a control rod control part structure schematic diagram in the present application.

[0029] In the figure: 1, support plate; 2, drive motor; 3, fixed block one; 4, threaded sleeve; 5, supporting roller; 6, threaded rod; 7, first connecting rod; 8, connecting support; 9, main table plate; 10, auxiliary table plate; 11, intermittent control assembly; 12, drive shaft; 13, drive gear; 14, walking roller; 15, control groove; 16, fixed support one; 17, hinged seat; 18, Z-shaped connecting rod; 19, limiting guide groove one; 20, limiting guide groove two; 21, fixed plate one; 22, through hole; 23, control push head; 24, second connecting rod; 25, connecting spring one; 26, mounting groove; 27, pressing plate; 28, U-shaped piece one; 29, fixed plate two; 30, connecting spring two; 31, connecting spring three; 32, U-shaped piece two; 33, control rod; 34, triangular chuck; 35, L-shaped connecting rod; 36, cam follower; 37, third connecting rod; 38, inclined push head; 39, connecting piece; 40, rolling bearing; 41, avoiding groove; 42, bottom plate; 43, blocking block one. DETAILED DESCRIPTION

[0030] In the present application, the description such as "first", "second" and the like is only for the purpose of description, and is not intended to particularly indicate the order or sequence, nor to limit the present application, which is merely to distinguish the protective assembly or operation described by the same technical terms, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first", "second" can explicitly or implicitly include at least one of the features. In addition, the technical solutions and technical features of various embodiments can be combined with each other, but it must be based on the realization of ordinary skilled in the art, when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, nor within the protection scope required by the present application.

[0031] Embodiment 1

[0032] Please refer to Figures 1-2 The present application provides a technical means, which comprises: a support plate 1, a drive motor 2 is installed on the support plate 1, a threaded rod 6 is arranged on the output shaft of the drive motor 2, a threaded sleeve 4 is sleeved on the outer wall of the threaded rod 6, a main table plate 9 is installed on the support plate 1 through a connecting support 8, the threaded sleeve 4 and the main table plate 9 are connected through a first connecting rod 7, and an auxiliary table plate 10 is movably arranged in the main table plate 9 through an intermittent control assembly 11.

[0033] Preferably, two groups of fixed blocks one 3 are fixedly connected with the support plate 1, one end of the threaded rod 6 is rotatably connected with one of the two groups of fixed blocks one 3, the other end of the threaded rod 6 is fixedly connected with the output shaft of the drive motor 2, and the output shaft of the drive motor 2 movably penetrates the fixed block one 3 at the bottom.

[0034] Preferably, the support roller 5 is installed on one side of the threaded sleeve 4 close to the support plate 1, and the first connecting rod 7 is hinged at one end to the main table plate 9 and at the other end to the threaded sleeve 4.

[0035] Preferably, the connecting support 8 is fixedly connected at one end to the support plate 1 and hinged at the other end to the main table plate 9.

[0036] Preferably, a plurality of control grooves 15 are arranged at equal intervals in the inner wall of the main table plate 9, a bottom plate 42 is fixedly arranged at the bottom of the auxiliary table plate 10, and an avoiding groove 41 is left between the bottom of the bottom plate 42 and the inner wall of the main table plate 9, and the walking roller 14 is installed on the outer wall of the auxiliary table plate 10 through the driving shaft 12.

[0037] The working principle and beneficial effects of the above scheme are as follows: in use, the threaded sleeve 4 is driven to move along the threaded rod 6 by the driving motor 2, so that the main table plate 9 is driven to rotate around the end of the connecting support 8 through the first connecting rod 7, so that the main table plate 9 is opened for use, and when the length of the table plate is too short, the auxiliary table plate 10 can be pulled out of the main table plate 9 to realize the extension of the table plate, and the intermittent control assembly 11 can prevent the auxiliary table plate 10 from being pulled back when it is pulled out of the main table plate 9.

[0038] The main table plate is stably and automatically unfolded by the driving motor driving the threaded rod-threaded sleeve mechanism, the first connecting rod and the hinged connecting support, the operation is simple, the manual operation steps of the passenger are saved, the embedded and pullable auxiliary table plate in the main table plate can be flexibly extended according to the actual demand (such as dining, office work and placing articles), the application range and practicality of the small table plate are significantly improved, the problem of insufficient space of the traditional fixed-length table plate is solved, the auxiliary table plate is stored in the main table plate, the overall structure is compact when the main table plate is folded, the space is effectively saved, the strict requirements of rail transit on space utilization are met, the unique intermittent control assembly (the core of embodiment 2) can automatically and reliably lock the auxiliary table plate at multiple preset positions during the extension of the auxiliary table plate. The locking is a self-locking realized by a pure mechanical structure, and no additional operation or power is required.

[0039] The main table plate is unfolded by the innovative motor drive, and the auxiliary table plate is extended by the pure mechanical intermittent self-locking control, the core advantages of one-key unfolding, stepless / segmented length adjustment, reliable self-locking anti-backup, safe and error-proof operation, compact and durable structure of the small table plate for rail transit are successfully realized, the convenience, comfort and safety of the passenger are significantly improved, and the strict requirements of rail transit equipment on reliability, space utilization and maintenance convenience are met. The pure mechanical self-locking mechanism is the highlight of the scheme in stability, durability and anti-interference.

[0040] Embodiment 2

[0041] Based on the embodiment 1, please refer to Figures 3-7 The intermittent control assembly 11 comprises a driving gear 13 fixedly sleeved on the outer wall of the driving shaft 12 away from the walking roller 14, two groups of fixed supports 16 fixedly connected with the bottom plate 42, and a fixed plate 21 fixedly arranged between the two groups of fixed supports 16.

[0042] Preferably, the fixed supports 16 are provided with a limiting guide groove 19 and a limiting guide groove 20, the fixed plate 21 is provided with a through hole 22, one group of the fixed supports 16 is fixedly provided with a hinged seat 17 on the side close to the driving gear 13, a Z-shaped connecting rod 18 is rotationally connected with the hinged seat 17, one end of the Z-shaped connecting rod 18 is engaged with the driving gear 13, and the other end of the Z-shaped connecting rod 18 is located on the top of a pressing plate 27.

[0043] Preferably, a second connecting rod 24 is slidingly arranged in each group of the limiting guide grooves 20, a control push head 23 is fixedly connected with the end of the second connecting rod 24, a connecting spring 25 is sleeved on the outer wall of the second connecting rod 24, and the two ends of the connecting spring 25 are fixedly connected with the control push head 23 and the fixed support 16 respectively.

[0044] Preferably, the bottom of the pressing plate 27 is fixedly provided with a U-shaped piece 28, the outer wall of a U-shaped piece 32 is fixedly provided with a fixed plate 29, the U-shaped piece 28 is slidingly arranged in the U-shaped piece 32, and the U-shaped piece 28 and the inner wall of the U-shaped piece 32 are connected through a connecting spring 30. The top of the fixed plate 21 is symmetrically provided with two groups of mounting grooves 26, one end of a connecting spring 31 is fixedly arranged in the mounting groove 26, the other end of the connecting spring 31 is fixedly connected with the fixed plate 29, one end of a control rod 33 is fixedly connected with the bottom of the U-shaped piece 32, the other end of the control rod 33 is movably arranged through the through hole 22, two groups of triangular clamping heads 34 are symmetrically fixedly arranged on the end of the control rod 33 movably arranged through the through hole 22, a vertical section of an L-shaped connecting rod 35 is rotationally connected with the outer wall of the front side of the control rod 33, and a cam follower 36 is arranged on the bottom of the vertical section of the L-shaped connecting rod 35.

[0045] Preferably, the two ends of a third connecting rod 37 are movably arranged in the two groups of limiting guide grooves 19 respectively, the top of the third connecting rod 37 is upwardly extended to symmetrically form two groups of inclined push heads 38, one end of a connecting piece 39 is rotationally connected with the front side of the third connecting rod 37, the other end of the connecting piece 39 is movably provided with a rolling bearing 40, and a blocking block 43 is fixedly arranged on one side of the control rod 33.

[0046] The working principle and beneficial effects of the above scheme are as follows: in use, the L-shaped connecting rod 35 and the connecting piece 39 are located in the control groove 15, by pulling the auxiliary table plate 10 outward, the L-shaped connecting rod 35 and the connecting piece 39 move in the control groove 15, at the same time, the walking roller 14 rotates, and the driving gear 13 is synchronously rotated clockwise through the driving shaft 12, so that the Z-shaped connecting rod 18 rotates counterclockwise around the hinge seat 17, the end of the Z-shaped connecting rod 18 close to the pressing plate 27 presses the pressing plate 27 downward, further makes the U-shaped piece one 28 move downward in the U-shaped piece two 32, at the same time, the connecting spring two 30 is compressed and further pushes the control rod 33 downward through the U-shaped piece two 32, in this process, the triangular clamping head 34 first pushes the control push head 23 in the direction away from each other and makes the connecting spring one 25, until the triangular clamping head 34 passes the control push head 23, the control push head 23 is no longer blocked and resets under the pushing of the connecting spring one 25, in this process, if the L-shaped connecting rod 35 and the connecting piece 39 are located in the control groove 15, at this time, due to the "hook" type of the control push head 23, the triangular clamping head 34 cannot pass the control push head 23, so that the Z-shaped connecting rod 18 cannot reset after pressing the control rod 33, but does not affect the continuous extension of the auxiliary table plate 10.

[0047] When the auxiliary table plate 10 is adjusted to the required length (i.e. moves a distance of several control grooves 15), the intermittent control assembly 11 will be in a self-locking state, at this time, the L-shaped connecting rod 35 and the connecting piece 39 are located in the moved control groove 15, the auxiliary table plate 10 cannot be retracted, because if the auxiliary table plate 10 is directly pushed back, due to the L-shaped connecting rod 35 being in the current control groove 15, and the Z-shaped connecting rod 18 rotating counterclockwise, and not pressing the pressing plate 27, the triangular clamping head 34 cannot pass the control push head 23, at this time, the triangular clamping head 34 tightly hooks the control push head 23 (under the action of the connecting spring three 31), forcing the control rod 33 to reset, in turn, making the L-shaped connecting rod 35 only rotate clockwise by hitting the left side of the inner wall of the current control groove 15 and being blocked by the blocking block one 43, unable to rotate counterclockwise, so that the auxiliary table plate 10 cannot move backward, thereby limiting the auxiliary table plate 10 to the current position without worrying about changing the position randomly.

[0048] When the sub-table plate 10 needs to be completely retracted, the sub-table plate 10 needs to be slowly pulled slightly forward, so that the rolling bearing 40 touches the right side of the inner wall of the current control groove 15, the connecting piece 39 is pushed upward and the third connecting rod 37 is also moved upward, the two groups of inclined push heads 38 push the two groups of control push heads 23 in the direction away from each other, and at the same time the cam follower 36 touches the right side of the inner wall of the current control groove 15, the control rod 33 is pushed to pass the two groups of control push heads 23, at this time the L-shaped connecting rod 35 is out of the current control groove 15 and cannot fall back and separate from the current control groove 15 due to the blockage of the two groups of control push heads 23, so that the L-shaped connecting rod 35 is not blocked by the left side of the inner wall of the control groove 15 when the sub-table plate 10 is retracted, that is, the sub-table plate 10 can be directly pushed back to the reset position.

[0049] In the locked state, the sub-table plate cannot be directly pushed back, effectively preventing the accidental retraction of the table plate caused by the passenger leaning, the collision of the object or the vehicle bumping, greatly improving the use stability and safety, and the complete retraction of the sub-table plate requires a specific operation step of "first slightly pulling and then pushing back" (triggering the inclined push head, separating the control push head, and the L-shaped connecting rod is out of the card slot), which effectively avoids the sudden retraction of the sub-table plate caused by the passenger's misoperation in normal use, and improves the user experience.

[0050] The above shows and describes the basic principles and main features of the present application and the advantages of the present application. It should be understood by those skilled in the art that the present application is not limited to the above embodiments, and the above embodiments and descriptions in the specification are only to illustrate the principles of the present application, and various changes and improvements can be made without departing from the spirit and scope of the present application, and these changes and improvements all fall within the scope of the present application. The scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. A multi-functional small table for rail transit, characterized in that, include: A support plate (1) and a drive motor (2) are mounted on the support plate (1). A threaded rod (6) is provided on the output shaft of the drive motor (2). A threaded sleeve (4) is fitted onto the outer wall of the threaded rod (6). The main table (9) is mounted on the support plate (1) through a connecting support (8). The threaded sleeve (4) is connected to the main table (9) through a first connecting rod (7). The auxiliary table (10) is movably mounted inside the main table (9) through an intermittent control component (11).

2. The multifunctional small table for rail transit according to claim 1, characterized in that, Two sets of fixing blocks (3) are fixedly connected to the bracket plate (1), and one end of the threaded rod (6) is rotatably connected to one of the fixing blocks (3), and the other end of the threaded rod (6) is fixedly connected to the output shaft of the drive motor (2). The output shaft of the drive motor (2) moves through the fixing block (3) at the bottom.

3. The multifunctional small table for rail transit according to claim 1, characterized in that, A support roller (5) is installed on the side of the threaded sleeve (4) near the support plate (1). One end of the first connecting rod (7) is hinged to the main table plate (9), and the other end of the first connecting rod (7) is hinged to the threaded sleeve (4).

4. The multifunctional small table for rail transit according to claim 1, characterized in that, One end of the connecting support (8) is fixedly connected to the support plate (1), and the other end of the connecting support (8) is hinged to the main table plate (9).

5. A multifunctional small table for rail transit according to claim 1, characterized in that, Several control slots (15) are evenly spaced at the bottom of the inner wall of the main table (9). A base plate (42) is fixedly installed at the bottom of the secondary table (10). An avoidance slot (41) is left between the bottom of the base plate (42) and the bottom of the inner wall of the main table (9). The walking rollers (14) are installed on the outer wall of the secondary table (10) through the drive shaft (12).

6. A multifunctional small table for rail transit according to claim 5, characterized in that, The intermittent control assembly (11) includes: a drive gear (13), which is fixedly sleeved on the outer wall of the drive shaft (12) away from the traveling roller (14), two sets of fixed brackets (16) are fixedly connected to the base plate (42), and a fixed plate (21) is fixedly disposed between the two sets of fixed brackets (16).

7. A multifunctional small table for rail transit according to claim 6, characterized in that, The first fixed bracket (16) has a first limiting guide groove (19) and a second limiting guide groove (20). The first fixed plate (21) has a through hole (22). One set of the first fixed brackets (16) has a hinge seat (17) fixed on the side near the drive gear (13). The Z-shaped connecting rod (18) is rotatably connected to the hinge seat (17). One end of the Z-shaped connecting rod (18) meshes with the drive gear (13), and the other end of the Z-shaped connecting rod (18) is located on the top of the pressure plate (27).

8. A multifunctional small table for rail transit according to claim 7, characterized in that, Each set of limit guide grooves (20) has a set of second connecting rods (24) slidably installed inside, and the control push head (23) is fixedly connected to the end of the second connecting rod (24). The connecting spring (25) is sleeved on the outer wall of the second connecting rod (24), and the two ends of the connecting spring (25) are fixedly connected to the control push head (23) and the fixed bracket (16) respectively.

9. A multifunctional small table for rail transit according to claim 8, characterized in that, A U-shaped part 1 (28) is fixedly provided at the bottom of the pressure plate (27), and a fixing plate 2 (29) is fixedly provided on the outer wall of the U-shaped part 2 (32). The U-shaped part 1 (28) is slidably provided on the U-shaped part 2 (32), and the U-shaped part 1 (28) and the inner wall of the U-shaped part 2 (32) are connected by a connecting spring 2 (30). The top of the fixing plate 1 (21) is symmetrically provided with two sets of mounting grooves (26). One end of the connecting spring 3 (31) is fixedly provided in the mounting groove (26). 31) The other end is fixedly connected to the second fixed plate (29). One end of the control rod (33) is fixedly connected to the bottom of the second U-shaped part (32). The other end of the control rod (33) moves through the through hole (22). Two sets of triangular clips (34) are symmetrically fixed at one end of the control rod (33) that passes through the through hole (22). The horizontal section of the L-shaped connecting rod (35) is rotatably connected to the front outer wall of the control rod (33). A cam follower (36) is installed at the bottom right angle end of the vertical section of the L-shaped connecting rod (35).

10. A multifunctional small table for rail transit according to claim 8, characterized in that, The two ends of the third link (37) are respectively movably disposed in two sets of limiting guide grooves (19). The top of the third link (37) extends upward symmetrically to form two sets of inclined push heads (38). One end of the connector (39) is rotatably connected to the front side of the third link (37). The other end of the connector (39) is movably provided with a rolling bearing (40). A blocking block (43) is fixedly provided on one side of the control rod (33).

Images