Improved speed differential device

Abstract

An improved structure's speed difference device, including speed difference device main part, is equipped with the suspension device on speed difference device main part, and the suspension device includes support arm, support shaft, connecting sleeve and suspension seat, support arm is equipped with two, and one end of support arm is connected to both sides of speed difference device main part's outer wall surface and rotates forward and backward, support shaft is clamped between the other end of two support arms, connecting sleeve is connected to support shaft and rotates forward and backward, suspension seat is connected to connecting sleeve and rotates left and right, and suspension seat and connecting sleeve are detachably connected with each other.The utility model realizes the flexible rotation of the suspension seat, reduces the curling condition of the speed difference device belt, and the safety belt can be directly fixed on the suspension seat through the D ring, and the replacement of the damaged speed difference device is also realized, so that the overall structure design is reasonable, the use is more comfortable, and the use safety can be guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of differential speed device technology, and in particular to a differential speed device with an improved structure. Background Technology

[0002] A fall arrestor, also known as a safety harness, is a product designed to protect individuals working at heights from falls. Traditional fall arrestors are typically mounted high and used low. However, with technological advancements, newer versions have been developed that attach directly to the D-ring on the back of the safety harness, allowing for low-mounted, high-use single and double-leg fall arrestors. These fall arrestors connect to the safety harness via a suspension device, connector, and D-ring. However, existing connectors primarily use ring hooks or custom-made open rings. This type of fall arrestor results in significant swaying after installation, causing discomfort and potential safety hazards. Furthermore, it is not flexible in rotation and the webbing may curl, indicating an unreasonable structural design. Utility Model Content

[0003] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide an improved speed differential with a reasonable structural design, more comfortable use, guaranteed safety, flexible rotation, and reduced curling of the speed differential webbing.

[0004] The technical solution adopted by this utility model to solve its technical problem is an improved differential gear, including a differential gear body, a suspension device on the differential gear body, the suspension device being connected to the D-ring of the seat belt, the suspension device including a support arm, a support shaft, a connecting sleeve, and a suspension seat, two support arms, one end of each support arm being rotatably connected to the outer walls of both sides of the differential gear body, the support shaft being clamped between the other ends of the two support arms, the connecting sleeve being rotatably connected to the support shaft, the suspension seat being used to connect the D-ring of the seat belt, the suspension seat being rotatably connected to the connecting sleeve, and the suspension seat and the connecting sleeve being detachably connected.

[0005] The advantages of the above technical solution are as follows: by allowing the outrigger to rotate back and forth and connect to the differential body, by allowing the connecting sleeve to rotate back and forth and connect to the support shaft clamped between the other ends of the outrigger, and by allowing the suspension seat to rotate left and right and connect to the connecting sleeve, the suspension seat can be flexibly rotated, reducing the curling of the differential webbing. The suspension seat and the connecting sleeve are designed to be detachably connected, and the safety belt can be directly fixed to the suspension seat through the D-ring, which also allows for replacement of the differential after damage. Therefore, the overall structural design is reasonable, the use is more comfortable, and the safety of use is guaranteed.

[0006] Furthermore, the two ends of the central shaft of the differential gear body are through-holes, and one end of each support arm is rotatably connected to the corresponding end of the central shaft.

[0007] The advantages of the above technical solution are: one end of the support arm is directly rotatably connected to the corresponding end of the central shaft. Therefore, no additional connecting structure is needed on the main body of the differential gear, and it is directly connected to the corresponding end of the central shaft. The force of the product is transferred to the central shaft, and because the central shaft has high strength, it is safer to use. The structural design is reasonable.

[0008] Furthermore, a shaft hole is provided through one end of the support arm, and a bushing is installed in the shaft hole. The bushing is rotatably connected to the corresponding end of the central shaft.

[0009] The advantages of adopting the above technical solution are: the support arm cooperates with the corresponding end of the central shaft through the bushing in the shaft hole, thereby reducing friction and wear, extending the service life of the product, making it safer to use, and having a reasonable structural design.

[0010] Furthermore, the support shaft is also provided with two positioning sleeves, which are arranged on both sides of the connecting sleeve, and the positioning sleeves make the connecting sleeve located in the middle of the support shaft.

[0011] The advantages of adopting the above technical solution are: by setting a positioning sleeve to limit the position of the connecting sleeve on the support shaft, the position of the connecting sleeve is set reasonably without affecting the front and rear rotation of the connecting sleeve, the overall force is more stable, and the smooth cooperation between the suspension seat and the connecting sleeve is also guaranteed, making the product more comfortable to use and the structural design is reasonable.

[0012] Furthermore, the connecting sleeve is provided with a first connecting ear, and a bolt rod is rotatably passed through the first connecting ear. The suspension seat is provided with a second connecting ear, which is fixedly connected to the bolt rod, and the threaded end of the bolt rod is threaded with an anti-loosening nut.

[0013] The advantages of the above technical solution are: during installation, the second connecting ear is aligned with the first connecting ear, and the second connecting ear can be rotated after the bolt rod is installed. Finally, the bolt rod is prevented from falling off by tightening the anti-loosening nut. The installation and disassembly are convenient and the structure is reasonably designed.

[0014] Furthermore, the lower part of the connecting sleeve is configured as a C-shaped part, which is rotatably connected to the support shaft, and the diameter of the opening of the C-shaped part is smaller than the diameter of the support shaft. The first connecting ears are respectively connected to both ends of the C-shaped part.

[0015] The advantages of adopting the above technical solution are: the lower part of the connecting sleeve is set as a C-shaped part, and the diameter of the opening of the C-shaped part is smaller than the diameter of the support shaft. During installation, the connecting sleeve can be prevented from falling off by fitting the C-shaped part onto the support shaft. The structural design is reasonable.

[0016] Furthermore, the two ends of the central shaft of the differential gear body are through-holes, and one end of each support arm is rotatably connected to the corresponding end of the central shaft.

[0017] Furthermore, the support arm is made of aerospace aluminum alloy, while the support shaft, the connecting sleeve, and the suspension seat are made of stainless steel.

[0018] The advantages of adopting the above technical solution are: the outrigger is made of aerospace aluminum alloy, which ensures the strength of the outrigger while being lightweight, making the overall product lighter; the support shaft, connecting sleeve, and suspension seat are made of stainless steel, which ensures the strength of the outrigger, so the overall use is safe and reliable. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a cross-sectional view of the overall structure of this utility model; Figure 3 This is a schematic diagram of the connecting sleeve structure of this utility model; Figure 4 This is a schematic diagram of the suspension seat structure of this utility model; Figure 5 for Figure 2 Enlarged structural diagram of section A in the middle.

[0020] In the figure: 1-Differential gear body, 2-Support arm, 3-Support shaft, 4-Connecting sleeve, 5-Suspension seat, 6-Central shaft, 7-Shaft sleeve, 8-Positioning sleeve, 9-First connecting ear, 10-Bolt rod, 11-Second connecting ear, 12-Anti-loosening nut, 13-C-shaped part. Detailed Implementation

[0021] To more clearly illustrate the technical solutions in the embodiments of this utility model and / or the prior art, the specific implementation methods of this utility model will be described below with reference to the accompanying drawings. Obviously, the accompanying drawings described below are merely some embodiments of this utility model. For those skilled in the art, other drawings and other implementation methods can be obtained based on these drawings without creative effort. Furthermore, references to orientation only indicate the relative positional relationship between the components, not their absolute positional relationship.

[0022] Please see Figures 1 to 5As shown, an improved differential gear includes a differential gear body 1 with a suspension device connected to the D-ring of the seat belt. The suspension device includes support arms 2, a support shaft 3, a connecting sleeve 4, and a suspension seat 5. Two support arms 2 are provided, one end of each arm 2 being rotatably connected to the left and right outer walls of the differential gear body 1. The support shaft 3 is sandwiched between the other ends of the two support arms 2, providing support. More specifically, the two ends of the support shaft 3 are configured as first fixed sections, the diameter of which matches the inner diameter of the corresponding mounting holes of the support arms 2. The first fixed sections of the support shaft 3 have countersunk holes. By using external tools to open the countersunk holes, the first fixed sections undergo radial expansion, thereby achieving a limiting effect. The connecting sleeve 4 is rotatably connected to the support shaft 3. Specifically, the connecting sleeve 4 is rotatably connected to the middle of the support shaft 3. The suspension seat 5 is used to connect the D-ring of the seat belt. The suspension seat 5 is rotatably connected to the connecting sleeve 4, and the suspension seat 5 and the connecting sleeve 4 are detachably connected. In the above structure, by allowing the support arm 2 to rotatably connect to the differential body 1, by allowing the connecting sleeve 4 to rotatably connect to the support shaft 3 clamped between the other ends of the support arm 2, and by allowing the suspension seat 5 to rotatably connect to the connecting sleeve 4, the suspension seat 5 can be flexibly rotated, reducing the curling of the differential webbing. By setting the suspension seat 5 and the connecting sleeve 4 to be detachably connected, the seat belt can be directly fixed to the suspension seat through the D-ring, which also allows for replacement of the differential after damage. Therefore, the overall structural design is reasonable, more comfortable to use, and ensures safety.

[0023] In this embodiment, the two ends of the central shaft 6 of the differential gear body 1 are through-holes, and one end of each support arm 2 is rotatably connected to the corresponding end of the central shaft 6. In the above structure, one end of the support arm 2 is directly rotatably connected to the corresponding end of the central shaft 6. Therefore, no additional connecting structure is needed on the differential gear body 1, and it is directly connected to the corresponding end of the central shaft 6. The force is transferred to the central shaft 6, and the central shaft 6 has high strength. Therefore, the use of the support arm 2 is safer, and the structural design is reasonable.

[0024] In this embodiment, a shaft hole is provided through one end of the support arm 2, and a bushing 7 is installed in the shaft hole. The bushing 7 is rotatably connected to the corresponding end of the central shaft 6. In the above structure, the support arm 2 is connected to the corresponding end of the central shaft 6 through the bushing 7 in the shaft hole, thereby reducing friction and wear, extending the service life of the product, making it safer to use, and providing a reasonable structural design.

[0025] In this embodiment, a second fixing section is provided at both ends of the central shaft 6. The diameter of the second fixing section is adapted to the inner diameter of the bushing 7. A countersunk hole is also provided on the second fixing section, and a shim is provided at the end of the second fixing section. The countersunk hole is opened by an external tool, so that the end of the second fixing section is radially expanded, thereby cooperating with the shim to achieve limiting. It should be noted that there is a gap between the bushing 7 and the shim, so as to avoid the radial expansion of the end of the second fixing section from interfering with the bushing 7.

[0026] In this embodiment, the support shaft 3 is also provided with two positioning sleeves 8, which are arranged on both sides of the connecting sleeve 4. The positioning sleeves 8 make the connecting sleeve 4 located in the middle of the support shaft 3. The positioning sleeves 8 can be made of plastic material. In the above structure, by setting the positioning sleeves 8 to restrict the position of the connecting sleeve 4 on the support shaft 3, the position of the connecting sleeve 4 is reasonably set without affecting the forward and backward rotation of the connecting sleeve 4. The overall force is more stable, and the smooth cooperation between the suspension seat 5 and the connecting sleeve 4 is also guaranteed. During the left and right rotation of the suspension seat 5, the connecting sleeve 4 is not easy to change its left and right position, making the product more comfortable to use and the structural design reasonable.

[0027] In this embodiment, the connecting sleeve 4 is provided with first connecting ears 9 facing each other, and a bolt rod 10 is rotatably inserted through the first connecting ears 9. The suspension seat 4 is provided with second connecting ears 11 facing each other, and the second connecting ears 11 are rotatably connected to the bolt rod 10. The threaded end of the bolt rod 10 is threadedly connected with an anti-loosening nut 12. More specifically, first connecting holes are provided on the two first connecting ears 9, and both first connecting holes are smooth holes. Second connecting holes are provided on the two second connecting ears 11, one of which can be a smooth hole and the other can be a threaded hole. More specifically, the threaded end of the bolt rod 10 is located at the threaded end of the bolt rod 10. An internal thread is formed on the inner wall of the second connecting hole on one side of the part. During installation, the second connecting ear is aligned with the first connecting ear, and the first connecting hole and the second connecting hole are fitted together. After the bolt rod 10 is installed, it is fixed to the suspension seat 5 through the corresponding second connecting hole on the second connecting ear 11. The bolt rod 10 rotates through the first connecting hole on the first connecting ear 9, thereby causing the suspension seat 5 to rotate relative to the connecting sleeve 4. Finally, the bolt rod 10 is prevented from falling off by tightening the anti-loosening nut 12. The other second connecting hole is set as a threaded hole, which can better prevent the bolt rod 10 from falling off. The installation and disassembly are convenient and the structure is reasonably designed.

[0028] In this embodiment, the lower part of the connecting sleeve 4 is a C-shaped part 13, and the positioning sleeve 8 will cooperate with the C-shaped part 13. The C-shaped part 13 is rotatably connected to the support shaft 3. The inner diameter of the C-shaped part 13 is adapted to the outer diameter of the support shaft 3, and the diameter of the opening of the C-shaped part 13 is smaller than the diameter of the support shaft 3. The first connecting ears 9 are respectively connected to the two ends of the C-shaped part 13. In the above structure, the lower part of the connecting sleeve 4 is a C-shaped part 13, and the diameter of the opening of the C-shaped part 13 is smaller than the diameter of the support shaft 3. During installation, the connecting sleeve 4 can be prevented from falling off by fitting the C-shaped part 13 onto the support shaft 3. The structural design is reasonable.

[0029] In this embodiment, the suspension seat 5 is U-shaped, and the two arms of the U-shape are configured as second connecting ears 11.

[0030] In this embodiment, the support arm 2 is made of aerospace aluminum alloy, while the support shaft 3, connecting sleeve 4, and suspension seat 5 are made of stainless steel. In the above structure, the support arm 2 is made of aerospace aluminum alloy, which ensures the strength of the support arm 2 while being lightweight, resulting in a lighter overall product weight. The support shaft 3, connecting sleeve 4, and suspension seat 5 are made of stainless steel, which ensures the strength of the support arm 2. Therefore, the overall use is safe and reliable.

[0031] The above description, in conjunction with specific preferred embodiments, provides a further detailed explanation of the present invention. It should not be construed that the specific implementation of the present invention is limited to these descriptions. For those skilled in the art, various simple deductions or substitutions can be made without departing from the concept of the present invention, and all such modifications and substitutions should be considered within the protection scope of the present invention.

Claims

1. An improved differential mechanism, comprising a differential mechanism body (1), wherein a suspension device is provided on the differential mechanism body (1), and the suspension device is connected to a D-ring of a seat belt, characterized in that: The suspension device includes a support arm (2), a support shaft (3), a connecting sleeve (4), and a suspension seat (5). There are two support arms (2), one end of which is rotatably connected to the outer walls of the two sides of the differential body (1). The support shaft (3) is sandwiched between the other ends of the two support arms (2). The connecting sleeve (4) is rotatably connected to the support shaft (3). The suspension seat (5) is used to connect the D-ring of the seat belt. The suspension seat (5) is rotatably connected to the connecting sleeve (4), and the suspension seat (5) and the connecting sleeve (4) are detachably connected.

2. The improved differential gear according to claim 1, characterized in that: The central shaft (6) of the differential body (1) is extended at both ends, and one end of each arm (2) is rotatably connected to the corresponding end of the central shaft (6).

3. The improved differential gear according to claim 2, characterized in that: One end of the support arm (2) is provided with a shaft hole, and a bushing (7) is installed in the shaft hole. The bushing (7) is rotatably connected to the corresponding end of the central shaft (6).

4. The improved differential gear according to claim 1, characterized in that: The support shaft (3) is also provided with two positioning sleeves (8), which are arranged on both sides of the connecting sleeve (4), and the positioning sleeves (8) make the connecting sleeve (4) located in the middle of the support shaft (3).

5. The improved differential gear according to claim 1, characterized in that: The connecting sleeve (4) is provided with a first connecting ear (9) opposite to each other, and a bolt rod (11) is rotatably passed through the first connecting ear (9). The suspension seat (5) is provided with a second connecting ear (10) opposite to each other. The second connecting ear (10) is fixedly connected to the bolt rod (11), and the threaded end of the bolt rod (11) is threaded with an anti-loosening nut (12).

6. The improved differential gear according to claim 5, characterized in that: The lower part of the connecting sleeve (4) is provided as a C-shaped part (13), the C-shaped part (13) is rotatably connected to the support shaft (3), and the diameter of the opening of the C-shaped part (13) is smaller than the diameter of the support shaft (3). The first connecting ear (9) is connected to both ends of the C-shaped part (13).

7. The improved differential gear according to claim 1, characterized in that: The support arm (2) is made of aviation aluminum alloy, and the support shaft (3), the connecting sleeve (4), and the suspension seat (5) are made of stainless steel.

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