Data storage cabinet of computer

Abstract

The invention discloses a computer data storage cabinet, and relates to the technical field of computers, the computer data storage cabinet comprises a computer data storage cabinet, the computer data storage cabinet comprises a cabinet body, a plurality of support rods, a plurality of support cylinders, a plurality of support plates and a plurality of fixing seats; the rear sides of the multiple supporting rods are fixedly connected with the left side and the right side of the rear side in the cabinet body, and the interiors of the multiple supporting cylinders are slidably connected with the surfaces of the multiple supporting rods. Through cooperative use of the data storage cabinet, the clamping assembly, the transmission assembly, the supporting assembly and the connecting assembly, storage equipment is installed and protected through the data storage cabinet, the storage equipment is clamped and fixed through the clamping assembly, the clamping assembly is driven through the transmission assembly, the supporting plate is supported through the supporting assembly, and the storage equipment is installed and protected through the connecting assembly. And the support plate is connected and fixed through the connecting assembly, so that the problem that the data storage cabinet is inconvenient to install the storage equipment is solved.

Description

Technical Field

[0001] This invention relates to the field of computer technology, specifically to a computer data storage cabinet. Background Technology

[0002] A computer is an electronic device that can receive input data, perform high-speed calculations according to preset programs, and output results. It performs data processing, storage, and transmission functions by executing programs.

[0003] To store and protect computer data storage devices, cabinets are needed to protect them. When installing storage devices in existing data storage cabinets, the storage devices need to be inserted into the internal compartments of the cabinet and assembled and secured using multiple components. Due to the large weight of the storage devices, it is difficult to move them into the cabinet manually. Furthermore, the process of securing them with multiple components requires the use of tools such as screwdrivers, making the installation process cumbersome. Summary of the Invention

[0004] To address the problems mentioned in the background section, the present invention aims to provide a computer data storage cabinet that facilitates the installation and fixing of storage devices, thus solving the problem that data storage cabinets are inconvenient for installing storage devices.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a computer data storage cabinet, comprising a data storage cabinet for a computer, the data storage cabinet comprising a cabinet body, a plurality of support rods, a plurality of support cylinders, a plurality of support plates and a plurality of fixed seats, the rear sides of the plurality of support rods being fixedly connected to the left and right sides of the rear side of the cabinet body respectively, the interior of the plurality of support cylinders being slidably connected to the surface of the plurality of support rods, and the side of the plurality of support cylinders near the plurality of support plates being fixedly connected to the left and right sides of the plurality of support plates respectively; Each of the multiple support plates is provided with a clamping assembly at its top, and the multiple clamping assemblies are used to clamp and fix the storage device. Each of the multiple support plates is provided with a transmission assembly inside, and the multiple transmission assemblies are used to drive the multiple clamping assemblies. The cabinet is equipped with a support assembly inside, which is used to support the support plate. The support assembly is also equipped with a connecting assembly inside, which is used to connect and fix the support.

[0006] As a preferred embodiment of the present invention, the clamping assembly at the top includes a plurality of threaded rods, a plurality of movable blocks, and a plurality of clamping frames. The sides of the plurality of threaded rods near the top support plate are respectively movably connected to the four corners inside the top support plate. The surfaces of the plurality of movable blocks are movably connected to the interior of the top support plate. The interiors of the plurality of movable blocks are threadedly connected to the surfaces of the plurality of threaded rods. The bottoms of the plurality of clamping frames are fixedly connected to the tops of the plurality of movable blocks.

[0007] In a preferred embodiment of the present invention, the top transmission assembly includes a limiting seat, a transmission motor, a transmission gear, and multiple connecting gears. The top of the limiting seat is fixedly connected to the top of the interior of the top support plate. The top of the transmission motor is fixedly connected to the top of the interior of the limiting seat. The interior of the transmission gear is movably connected to the bottom of the surface of the limiting seat. The bottom of the interior of the transmission gear is connected to the bottom of the output end of the transmission motor. The sides of the multiple threaded rods near the multiple connecting gears are fixedly connected to the surfaces of the multiple connecting gears. The surfaces of the multiple connecting gears are meshed with the surfaces of the transmission gears.

[0008] In a preferred embodiment of the present invention, the support assembly includes a support frame, four connecting cylinders, and four connecting rods. The surface of the support frame is movably connected to the front side of the cabinet interior, the surfaces of the four connecting cylinders are movably connected to the four corners of the cabinet interior, the surfaces of the four connecting rods are movably connected to the interior of the four connecting cylinders, and the front sides of the four connecting rods are fixedly connected to the rear side of the support frame.

[0009] In a preferred embodiment of the present invention, the connecting assembly includes a connecting seat, two first toothed blocks, two second toothed blocks, and two return springs. The left and right sides of the connecting seat are movably connected to the left and right sides inside the support frame, respectively. The surfaces of the two first toothed blocks are movably connected to the left and right sides inside the connecting seat, respectively. The opposite sides of the two second toothed blocks are inserted into the left and right sides inside the support frame, respectively. The surfaces of the two second toothed blocks are movably connected to the left and right sides inside the connecting seat, respectively. The sides of the two return springs near the connecting seat are fixedly connected to the interior of the connecting seat, and the opposite sides of the two return springs are fixedly connected to the opposite ends of the two second toothed blocks, respectively.

[0010] As a preferred embodiment of the present invention, the surface of the limiting seat is fixedly connected with a plurality of protrusions, and the surfaces of the plurality of protrusions are all movably connected to the interior of a plurality of connecting gears.

[0011] As a preferred embodiment of the present invention, a hydraulic cylinder is installed at the bottom of the cabinet body, and the front side of the output end of the hydraulic cylinder is fixedly connected to the rear side of the support frame.

[0012] As a preferred embodiment of the present invention, rotating shafts are fixedly connected to both the left and right sides inside the connecting seat, and synchronous gears are movably connected to the surfaces of the two rotating shafts. The surfaces of the two first tooth blocks and the two second tooth blocks are meshed with the surfaces of the two synchronous gears.

[0013] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. This invention solves the problem of data storage cabinets being inconvenient for installing storage devices by using a combination of data storage cabinets, clamping components, transmission components, support components, and connecting components. The data storage cabinets protect the storage devices during installation, the clamping components hold and fix the storage devices, the transmission components drive the clamping components, the support components support the support plates, and the connecting components connect and fix the support plates. This achieves the effect of facilitating the installation and fixation of storage devices.

[0014] 2. By setting up a clamping component and a transmission component, the transmission motor can drive the threaded rod to rotate through the transmission gear and the connecting gear, thereby moving the moving block and clamping and fixing the storage device through the clamping frame.

[0015] 3. By setting up a support component and a connecting component, the first toothed block can be inserted into the interior of the connecting seat, and the support frame can drive the support plate to move forward through the connecting component, thereby removing the storage device from the cabinet. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a structural diagram of a data storage cabinet; Figure 3 This is a schematic diagram of the internal structure of the support plate; Figure 4 This is a structural schematic diagram of the support frame; Figure 5 This is a schematic diagram of the internal structure of the connector.

[0017] In the diagram: 1. Data storage cabinet; 101. Cabinet body; 102. Support rod; 103. Support cylinder; 104. Support plate; 105. Fixed seat; 2. Clamping assembly; 201. Threaded rod; 202. Moving block; 203. Clamping frame; 3. Transmission assembly; 301. Limit seat; 302. Transmission motor; 303. Transmission gear; 304. Connecting gear; 4. Support assembly; 401. Support frame; 402. Connecting cylinder; 403. Connecting rod; 5. Connecting assembly; 501. Connecting seat; 502. First toothed block; 503. Second toothed block; 504. Return spring; 6. Protrusion; 7. Hydraulic cylinder; 8. Rotating shaft; 9. Synchronous gear. Detailed Implementation

[0018] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0019] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and those skilled in the art can make similar extensions without departing from the spirit of the invention. Therefore, the invention is not limited to the specific embodiments disclosed below.

[0020] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that is mutually exclusive with other embodiments.

[0021] Secondly, the present invention is described in detail with reference to the schematic diagrams. When detailing the embodiments of the present invention, for ease of explanation, the cross-sectional views illustrating the device structure may be partially enlarged, not according to the usual scale. Furthermore, the schematic diagrams are merely examples and should not limit the scope of protection of the present invention. In addition, actual fabrication should include three-dimensional spatial dimensions of length, width, and depth. Example 1

[0022] Reference Figure 1-5 The first embodiment of the present invention provides a data storage cabinet 1 for a computer. The data storage cabinet 1 includes a cabinet body 101, a plurality of support rods 102, a plurality of support cylinders 103, a plurality of support plates 104 and a plurality of fixed seats 105. The rear sides of the plurality of support rods 102 are respectively fixedly connected to the left and right sides of the rear side of the cabinet body 101. The interior of the plurality of support cylinders 103 is slidably connected to the surface of the plurality of support rods 102. The side of the plurality of support cylinders 103 near the plurality of support plates 104 is respectively fixedly connected to the left and right sides of the plurality of support plates 104. Each of the multiple support plates 104 is provided with a clamping assembly 2 on its top. The multiple clamping assemblies 2 are used to clamp and fix the storage device. Each of the multiple support plates 104 is provided with a transmission assembly 3 inside. The multiple transmission assemblies 3 are used to drive the multiple clamping assemblies 2. The cabinet 101 is equipped with a support component 4, which is used to support the support plate 104. The support component 4 is equipped with a connecting component 5, which is used to connect and fix the support.

[0023] Specifically, the storage device is installed and protected by the data storage cabinet 1, the storage device is clamped and fixed by the clamping component 2, the clamping component 2 is driven by the transmission component 3, the support plate 104 is supported by the support component 4, and the support plate 104 is connected and fixed by the connecting component 5.

[0024] Furthermore, when the storage device needs to be installed, the connecting component 5 is connected and fixed to the support plate 104, which drives the support component 4 to move. During the movement of the support component 4, the support plate 104 is moved forward through the connecting component 5, so that the support plate 104 is moved out of the cabinet 101. The storage device is placed on top of the support plate 104. The clamping component 2 is driven by the transmission component 3, and the clamping component 2 clamps and fixes the storage device. The support component 4 drives the support plate 104 to move backward, so that the storage device is moved into the cabinet 101. The support component 4 presses the support cylinders 103 on both sides of the support plate 104 to keep the support plate 104 in a fixed state, thereby keeping the storage device stable. Example 2

[0025] In a second embodiment of the present invention, a top clamping assembly 2 is provided, comprising a plurality of threaded rods 201, a plurality of movable blocks 202, and a plurality of clamping frames 203. The threaded rods 201 are movably connected to the four corners of the top support plate 104 on the side closest to the top support plate 104. The surfaces of the movable blocks 202 are movably connected to the interior of the top support plate 104, and the interiors of the movable blocks 202 are threadedly connected to the surfaces of the threaded rods 201. The bottoms of the clamping frames 203 are fixedly connected to the tops of the movable blocks 202. A top transmission assembly 3 includes a limiting seat 301, a transmission motor 302, a transmission gear 303, and a plurality of connecting gears 304. The limiting seat 301... The top of 01 is fixedly connected to the top of the top support plate 104. The top of the transmission motor 302 is fixedly connected to the top of the limit seat 301. The interior of the transmission gear 303 is movably connected to the bottom of the surface of the limit seat 301. The bottom of the interior of the transmission gear 303 is connected to the bottom of the output end of the transmission motor 302. The sides of the multiple threaded rods 201 near the multiple connecting gears 304 are fixedly connected to the surface of the multiple connecting gears 304. The surfaces of the multiple connecting gears 304 are meshed with the surface of the transmission gear 303. The surface of the limit seat 301 is fixedly connected to multiple protrusions 6. The surfaces of the multiple protrusions 6 are movably connected to the interior of the multiple connecting gears 304.

[0026] Specifically, the drive motor 302 can drive the threaded rod 201 to rotate through the drive gear 303 and the connecting gear 304, thereby moving the moving block 202, and clamping and fixing the storage device through the clamping frame 203, while limiting the position of the connecting gear 304 through the protrusion 6.

[0027] Furthermore, the drive motor 302 is started, and the output end of the drive motor 302 drives the drive gear 303 to rotate. During the selection process, the drive gear 303 drives multiple connecting gears 304 to rotate. During the rotation of the multiple connecting gears 304, multiple moving blocks 202 move inward. During the movement of the multiple moving blocks 202, multiple clamping frames 203 move, and the storage device is clamped and fixed by the multiple clamping frames 203. Example 3

[0028] In a third embodiment of the present invention, a support assembly 4 is provided, comprising a support frame 401, four connecting cylinders 402, and four connecting rods 403. The surface of the support frame 401 is movably connected to the front side of the interior of the cabinet 101. The surfaces of the four connecting cylinders 402 are movably connected to the four corners of the interior of the cabinet 101, respectively. The surfaces of the four connecting rods 403 are movably connected to the interior of the four connecting cylinders 402, and the front sides of the four connecting rods 403 are fixedly connected to the rear side of the support frame 401. A connecting assembly 5 comprises a connecting seat 501, two first toothed blocks 502, two second toothed blocks 503, and two return springs 504. The left and right sides of the connecting seat 501 are movably connected to the left and right sides of the interior of the support frame 401, respectively. The surfaces of the two first toothed blocks 502 are movably connected to the left and right sides of the interior of the connecting seat 501, respectively. The opposite sides of the two second tooth blocks 503 are respectively inserted and connected to the left and right sides inside the support frame 401. The surfaces of the two second tooth blocks 503 are respectively movably connected to the left and right sides inside the connecting seat 501. The sides of the two return springs 504 near the connecting seat 501 are fixedly connected to the inside of the connecting seat 501. The opposite sides of the two return springs 504 are respectively fixedly connected to the opposite ends of the two second tooth blocks 503. A hydraulic cylinder 7 is installed at the bottom inside the cabinet 101. The front side of the output end of the hydraulic cylinder 7 is fixedly connected to the rear side of the support frame 401. Rotary shafts 8 are fixedly connected to the left and right sides inside the connecting seat 501. Synchronous gears 9 are movably connected to the surfaces of the two rotating shafts 8. The surfaces of the two first tooth blocks 502 and the surfaces of the two second tooth blocks 503 are meshed with the surfaces of the two synchronous gears 9.

[0029] Specifically, the first tooth block 502 can be inserted into the interior of the connecting seat 501, and the support frame 401 can drive the support plate 104 to move forward through the connecting component 5, thereby removing the storage device from the cabinet 101. The support frame 401 is moved by the hydraulic cylinder 7, and the first tooth block 502 moves with the second tooth block 503 through the synchronous gear 9.

[0030] Further, two second toothed blocks 503 are moved to opposite ends. During the movement of the two second toothed blocks 503, two synchronous gears 9 are driven to rotate. During the rotation of the two synchronous gears 9, two first toothed blocks 502 are driven to move, so that the two first toothed blocks 502 are completely moved into the interior of the connecting seat 501. Both second toothed blocks 503 are disengaged from the support frame 401. The connecting seat 501 is moved downward, so that the connecting seat 501 is aligned with the fixed seat 105. The return spring 504 rebounds, and the two second toothed blocks 503 are inserted into the interior of the support frame 401 and the fixed seat 105. The hydraulic cylinder 7 is activated. The output end of the hydraulic cylinder 7 drives the support frame 401 to move forward. During the movement of the support frame 401, the two first toothed blocks 502 drive the support plate 104 to move forward. Working principle:

[0031] When the storage device needs to be installed, two second toothed blocks 503 are moved to opposite ends. During the movement of the two second toothed blocks 503, the two synchronous gears 9 are rotated, and during the rotation of the two synchronous gears 9, the two first toothed blocks 502 are moved, so that the two first toothed blocks 502 are completely moved into the connecting seat 501. Both second toothed blocks 503 are disengaged from the support frame 401. The connecting seat 501 is moved downward, so that the connecting seat 501 is aligned with the fixed seat 105. The return spring 504 returns, and the two second toothed blocks 503 are inserted into the support frame 401 and the fixed seat 105. The hydraulic cylinder 7 is activated, and the output end of the hydraulic cylinder 7 drives the support frame 401 to move forward. During the movement of the support frame 401, the two first toothed blocks 502 drive the support plate. 104 moves forward, causing the support plate 104 to move out of the cabinet 101, placing the storage device on top of the support plate 104. The drive motor 302 is started, and the output end of the drive motor 302 drives the drive gear 303 to rotate. During the rotation of the drive gear 303, multiple connecting gears 304 are driven to rotate. During the rotation of the multiple connecting gears 304, multiple moving blocks 202 are driven to move inward. During the movement of the multiple moving blocks 202, multiple clamping frames 203 are moved, clamping and fixing the storage device through the multiple clamping frames 203. The support frame 401 drives the support plate 104 to move backward, moving the storage device into the cabinet 101. The support frame 401 presses the support cylinders 103 on both sides of the support plate 104, keeping the support plate 104 in a fixed state, thereby keeping the storage device stable.

[0032] In summary, by facilitating the installation and securing of storage devices, the goal of making storage devices easy to install and secure is achieved.

[0033] The drive motor and hydraulic cylinder used in this application can be additionally equipped with protective measures that are common knowledge in this technical field under different usage environments, including but not limited to the following methods, such as protective covers for equipment protection, dustproof nets for equipment dust prevention, and sealing components or waterproof coatings for equipment waterproofing, which are commonly used by those skilled in the art.

[0034] It should be noted that (motor, screw, gear, spring, hydraulic cylinder) are existing devices or equipment, or devices or equipment that can be implemented by existing technology. The power supply, connection method, usage method, power source, fixing method, installation method, control method, etc. of the equipment, as well as the materials of each accessory and the selection of various parameters are common knowledge to those skilled in the art, and therefore will not be described in detail in this application document.

[0035] It is important to note that the constructions and arrangements of this application shown in several different exemplary embodiments are merely illustrative. Although only a few embodiments are described in detail in this disclosure, those who consult this disclosure will readily understand that many modifications are possible (e.g., changes in the size, dimensions, structure, shape, and proportions of various elements, as well as parameter values ​​(e.g., temperature, pressure, etc.), mounting arrangements, use of materials, color, orientation, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in this application). For example, an element shown as integrally formed may be composed of multiple parts or elements, the position of elements may be inverted or otherwise altered, and the nature or number or position of discrete elements may be changed or altered. Therefore, all such modifications are intended to be included within the scope of the invention. The order or sequence of any process or method steps may be changed or rearranged according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure described herein that performs the function, and not only structurally equivalent but also equivalent in structure. Other substitutions, modifications, alterations, and omissions may be made in the design, operation, and arrangement of the exemplary embodiments without departing from the scope of the invention. Therefore, the present invention is not limited to the specific embodiments, but extends to various modifications that still fall within the scope of the appended claims.

[0036] Furthermore, in order to provide a concise description of exemplary embodiments, not all features of actual embodiments (i.e., those features that are not relevant to the best mode of carrying out the invention as currently considered, or those features that are not relevant to implementing the invention) may be omitted.

[0037] It should be understood that numerous specific implementation decisions can be made during the development of any practical implementation, such as in any engineering or design project. Such development efforts may be complex and time-consuming, but for those skilled in the art who benefit from this disclosure, the development effort will be a routine work of design, manufacturing, and production without requiring much experimentation.

[0038] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A computer data storage cabinet, characterized in that: The data storage cabinet (1) for computers includes a cabinet body (101), a plurality of support rods (102), a plurality of support cylinders (103), a plurality of support plates (104) and a plurality of fixed seats (105). The rear sides of the plurality of support rods (102) are fixedly connected to the left and right sides of the rear side of the cabinet body (101), and the interior of the plurality of support cylinders (103) is slidably connected to the surface of the plurality of support rods (102). The side of the plurality of support cylinders (103) near the plurality of support plates (104) is fixedly connected to the left and right sides of the plurality of support plates (104). Each of the multiple support plates (104) is provided with a clamping assembly (2) on its top. The multiple clamping assemblies (2) are used to clamp and fix the storage device. Each of the multiple support plates (104) is provided with a transmission assembly (3) inside its interior. The multiple transmission assemblies (3) are used to drive the multiple clamping assemblies (2). The cabinet (101) is provided with a support component (4) inside, which is used to support the support plate (104). The support component (4) is provided with a connecting component (5) inside, which is used to connect and fix the support.

2. A computer data storage cabinet according to claim 1, characterized in that: The clamping assembly (2) at the top includes multiple threaded rods (201), multiple movable blocks (202), and multiple clamping frames (203). The multiple threaded rods (201) are movably connected to the four corners inside the top support plate (104) on the side near the top support plate (104). The surfaces of the multiple movable blocks (202) are movably connected to the interior of the top support plate (104). The interiors of the multiple movable blocks (202) are threadedly connected to the surfaces of the multiple threaded rods (201). The bottoms of the multiple clamping frames (203) are fixedly connected to the tops of the multiple movable blocks (202).

3. A computer data storage cabinet according to claim 2, characterized in that: The transmission assembly (3) at the top includes a limiting seat (301), a transmission motor (302), a transmission gear (303), and multiple connecting gears (304). The top of the limiting seat (301) is fixedly connected to the top inside the top support plate (104). The top of the transmission motor (302) is fixedly connected to the top inside the limiting seat (301). The inside of the transmission gear (303) is movably connected to the bottom of the surface of the limiting seat (301). The bottom inside the transmission gear (303) is connected to the bottom of the output end of the transmission motor (302). The sides of the multiple threaded rods (201) near the multiple connecting gears (304) are fixedly connected to the surface of the multiple connecting gears (304). The surfaces of the multiple connecting gears (304) are meshed with the surfaces of the transmission gears (303).

4. A computer data storage cabinet according to claim 2, characterized in that: The support assembly (4) includes a support frame (401), four connecting cylinders (402) and four connecting rods (403). The surface of the support frame (401) is movably connected to the front side of the cabinet (101). The surfaces of the four connecting cylinders (402) are movably connected to the four corners of the cabinet (101). The surfaces of the four connecting rods (403) are movably connected to the interior of the four connecting cylinders (402). The front side of the four connecting rods (403) is fixedly connected to the rear side of the support frame (401).

5. A computer data storage cabinet according to claim 4, characterized in that: The connecting assembly (5) includes a connecting seat (501), two first toothed blocks (502), two second toothed blocks (503), and two return springs (504). The left and right sides of the connecting seat (501) are movably connected to the left and right sides inside the support frame (401), respectively. The surfaces of the two first toothed blocks (502) are movably connected to the left and right sides inside the connecting seat (501), respectively. The opposite sides of the two second toothed blocks (503) are movably connected to the left and right sides inside the support frame (401), respectively. The surfaces of the two second toothed blocks (503) are movably connected to the left and right sides inside the connecting seat (501), respectively. The side of the two return springs (504) closest to the connecting seat (501) is fixedly connected to the interior of the connecting seat (501), respectively. The opposite sides of the two return springs (504) are fixedly connected to the opposite ends of the two second toothed blocks (503).

6. A computer data storage cabinet according to claim 3, characterized in that: The surface of the limiting seat (301) is fixedly connected with a plurality of protrusions (6), and the surfaces of the plurality of protrusions (6) are all movably connected to the interior of a plurality of connecting gears (304).

7. A computer data storage cabinet according to claim 4, characterized in that: A hydraulic cylinder (7) is installed at the bottom inside the cabinet (101), and the front side of the output end of the hydraulic cylinder (7) is fixedly connected to the rear side of the support frame (401).

8. A computer data storage cabinet according to claim 5, characterized in that: The connecting seat (501) has rotating shafts (8) fixedly connected to both the left and right sides inside. The surfaces of the two rotating shafts (8) are movably connected to synchronous gears (9). The surfaces of the two first tooth blocks (502) and the two second tooth blocks (503) are meshed with the surfaces of the two synchronous gears (9).

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