Dust-free drag chain

Abstract

The utility model discloses a dust-free drag chain, which comprises an outer shell, the outer shell comprises an upper shell and a lower shell which are mutually buckled, the surfaces of the upper shell and the lower shell are respectively provided with a corrugated part, and the dust-free drag chain is characterized in that the corrugated part of the upper shell comprises at least two supporting parts and an extending part connected with the supporting parts, the supporting parts are provided with abutting blocks, and the abutting blocks are connected with the extending part. The abutting blocks on every two adjacent supporting parts abut against each other, the abutting blocks are provided with inclined supporting faces oppositely arranged on the two sides of the abutting blocks, and the inclined supporting faces are connected with the abutting faces of the abutting blocks and the side faces of the supporting parts. The mode that the abutting part is formed by thickening the top edge of the supporting part is adopted, the abutting block is small in structure, the production cost of the drag chain is reduced, and the weight of the drag chain is reduced.

Description

Technical Field

[0001] This utility model relates to the field of cable chain technology, and in particular to a dust-free cable chain. Background Technology

[0002] Cable drag chains, also known as cable protection drag chains, are devices used to secure cables, wires, compressed air hoses, and hydraulic hoses, facilitating their rotation and movement. Used in reciprocating motion applications, cable drag chains provide traction and protection for internal cables, oil pipes, air pipes, water pipes, etc. They are widely used in CNC machine tools, electronic equipment, glass machinery, injection molding machine robots, material handling machinery, plastic machinery, lifting equipment, woodworking machinery, the automotive industry, industrial vehicles, metal processing machines, machine tools, casting machinery, port equipment, flat panel display equipment, semiconductor equipment, and other industries. Plastic cable drag chains are generally used in automated equipment due to their lightweight nature, facilitating the movement and operation of automated equipment. For operation in cleanrooms and vacuum environments, dust-free cable drag chains, also known as cleanroom cable drag chains, are required. These are used in cleanrooms to support electrical connections and loads, possessing properties such as wear resistance, non-gas release, non-dust accumulation, and resistance to acids, alkalis, and aging. They are typically fitted over the surface of cables and air pipes for sealing and dust prevention. Existing cleanroom cable chain housings typically consist of two interlocking shells. The shell surfaces are corrugated to allow for bending. One shell has its outer corrugated edge thickened to form a contact surface, thus limiting the bending direction of the shell and ensuring the cable's bending direction while providing support. However, thickening the corrugated portion of the shell increases production costs and the weight of the cable chain.

[0003] For example, Chinese Patent Publication No. CN214541621U, published on October 29, 2021, entitled "Dust-free Cable Chain", includes a shell, a keel, and a support frame; the shell includes a bending block, an extension block that engages with the bending block, and a connector end block that connects the bending block and the extension block respectively; the bending block includes a curved edge, a locking block, and a protective strip; the extension block includes a stretching edge, an insert block, and a rib; a threading cavity is provided between the curved edge and the stretching edge, and the locking block and the insert block engage alternately in sequence; the keel is inserted into the threading cavity; the keel includes at least two connecting blocks and a fixing block; the support frame is engaged in the threading cavity; the support frame includes a cable routing block, a connecting block, and a sleeve block; the two ends of the connecting block are respectively connected to the curved edge and the stretching edge, and the sleeve block is mounted on the outside of the connecting block.

[0004] The drawback of existing patents is that existing cleanroom cable chain shells are typically formed by two shells fastened together. The shell surface has corrugated sections to allow for bending. The outer edge of the corrugated section of one shell is thickened to form a contact surface, thereby limiting the bending direction of the shell and ensuring the bending direction of the cable chain while providing support for the cable. However, thickening the corrugated section of the shell increases production costs and the weight of the cable chain. Utility Model Content

[0005] The purpose of this invention is to improve the existing cleanroom cable chain, which requires thickening the outer edge of the corrugated part of one of the shells to form the contact surface due to the limitation of the bending direction, resulting in high production costs and excessive weight of the cable chain. The invention aims to provide a cleanroom cable chain that reduces production costs and cable weight while improving cable stability.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A cleanroom cable chain includes an outer shell, comprising an upper shell and a lower shell that interlock. Both the upper and lower shells have corrugated surfaces. The corrugated surface of the upper shell includes at least two support portions and extension portions connected to the support portions. Each support portion has an abutment block, with adjacent abutment blocks abutting against each other. Each abutment block has diagonal bracing surfaces opposite each other on both sides, connecting the abutment surface of the abutment block to the side of the support portion. This cleanroom cable chain, by using abutment blocks to restrict the bending direction of the cable chain outer shell, allows the outer shell to bend only to the side without abutment blocks. After bending 180°, the upper and lower outer shells are parallel. The abutment blocks, located on the support portions of the upper shell, limit the bending direction of the upper shell. Compared to the prior art method of forming abutment portions by thickening the top edge of the support portions, the abutment block structure is smaller, reducing the production cost and weight of the cable chain. The abutment blocks on two adjacent support sections abut against each other, and a diagonal bracing surface is provided between the abutment surface of the abutment block and the side of the support section to support the abutment block and strengthen its strength on the support section. The abutment blocks on two adjacent support sections provide stronger support when they abut against each other. After the cable chain outer shell is bent 180°, the upper and lower layers of the cable chain outer shell are distributed in parallel, further enhancing the strength of the abutment block and providing stronger support for the cable.

[0008] Preferably, the abutment surfaces of the abutment blocks are arranged opposite each other on both sides of the abutment block, and the abutment block has a plane connecting the abutment surfaces. When the cable chain is distributed in the horizontal direction, the abutment blocks on two adjacent support parts abut against each other, and the planes of the abutment blocks on two adjacent support parts are located in the same plane. The plane plays a supporting role, so that the cable chain can be placed stably on the ground and dragged along the ground.

[0009] Preferably, the abutment block has two opposing straight support surfaces on either side of the plane, and a diagonal support surface is located between and connected to the two straight support surfaces. The straight support surfaces are connected to the side and top edge of the support portion. The straight support surfaces and diagonal support surfaces support the four sides of the abutment block, the diagonal support surfaces support the abutment surface and the side of the support portion, and the straight support surfaces support the plane and the side and top edge of the support portion. This makes the abutment block more supportive.

[0010] Preferably, the straight support surface is perpendicular to the plane, and the straight support surface is perpendicular to the inclined support surface. This makes the supporting performance of the abutment block stronger and facilitates production.

[0011] Preferably, each support section has two abutment blocks, symmetrically arranged at both ends of the support section. This symmetrical arrangement of the abutment blocks at both ends of the support section results in a more stable structure, enhancing the strength of the cable chain and providing stronger support for the cable.

[0012] Preferably, the support portion includes a connecting section located in the middle of the support portion and arc-shaped sections located at both ends of the connecting section, with the abutment block located at the junction of the connecting section and the arc-shaped sections. The arc-shaped sections at both ends of the support portion enhance the strength of the cable chain, further providing stronger support for the cable.

[0013] Preferably, the device also includes a wiring terminal at the end of the housing, the wiring terminal comprising two interlocking end blocks, the two end blocks being engaged with the outside of the end of the housing and snapped into the housing.

[0014] Preferably, the inner wall of the terminal block is provided with at least two locking plates that engage with the outer casing, and the locking plates engage with the corrugated portion on the outer casing. The presence of at least two locking plates within the terminal block enhances the connection strength between the terminal and the outer casing.

[0015] Preferably, the connection point of the two end blocks is provided with positioning components disposed opposite to each other on both sides of the terminal block. Each positioning component includes a positioning groove on one end block and a positioning plate on the other end block, with the positioning plate inserted into the positioning groove. The positioning groove and positioning plate are used to position the two end blocks for easy engagement.

[0016] Preferably, the two end blocks are connected by hexagonal bolts, and the outer wall of each end block is provided with a hexagonal groove that mates with the hexagonal head of the hexagonal bolt. The hexagonal groove prevents the hexagonal bolt from rotating and facilitates the fixing of the wiring terminal.

[0017] Therefore, this utility model has the following beneficial effects: by thickening the top edge of the support part to form the abutment part, the abutment block structure is small, reducing the production cost and weight of the cable chain; the abutment blocks on two adjacent support parts abut against each other, and a diagonal bracing surface is set between the abutment surface of the abutment block and the side of the support part, which plays the role of supporting the abutment block and strengthening the strength of the abutment block on the support part. The abutment blocks on two adjacent support parts have stronger support strength when they abut against each other; the increased strength of the cable chain shell further provides stronger support for the cable. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the upper shell structure in this utility model.

[0019] Figure 2 This is a top view of the upper shell in this utility model.

[0020] Figure 3 This is a side view of the upper shell in this utility model.

[0021] Figure 4 This is a schematic diagram of a terminal block in this utility model.

[0022] Figure 5 This is a schematic diagram of the structure of the end block in this utility model.

[0023] Figure 6 This is a schematic diagram of a structure in which the upper shell and the end block are snapped together.

[0024] As shown in the picture:

[0025] Upper shell 1,

[0026] Support section 1.1, connecting section 1.1.1, arc section 1.1.2,

[0027] Extension section 1.2

[0028] 2. Abutting block, 2.1. Diagonal brace surface, 2.2. Abutting surface, 2.3. Flat surface, 2.4. Straight brace surface.

[0029] End block 3, clamping plate 3.1, positioning groove 3.2, positioning plate 3.3, hexagonal groove 3.4. Detailed Implementation

[0030] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the utility model will be further described below in conjunction with the accompanying drawings and specific implementation methods.

[0031] Example 1, as Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 The cleanroom cable chain shown includes an outer shell, which comprises an upper shell 1 and a lower shell that are interlocked. Both the upper shell 1 and the lower shell have corrugated portions on their surfaces. The corrugated portion of the upper shell 1 includes at least two support portions 1.1 and extension portions 1.2 connected to the support portions 1.1. The support portions 1.1 are provided with abutment blocks 2, and the abutment blocks 2 on two adjacent support portions 1.1 abut against each other. The abutment blocks 2 are provided with inclined bracing surfaces 2.1 that are oppositely arranged on both sides of the abutment blocks 2. The inclined bracing surfaces 2.1 connect the abutment surfaces 2.2 of the abutment blocks 2 and the side surfaces of the support portions 1.1.

[0032] Cable drag chains, also known as cable protection drag chains, are devices used to secure cables, wires, compressed air hoses, and hydraulic hoses, facilitating their rotation and movement. Used in reciprocating motion applications, cable drag chains provide traction and protection for internal cables, oil pipes, air pipes, water pipes, etc. They are widely used in CNC machine tools, electronic equipment, glass machinery, injection molding machine robots, material handling machinery, plastic machinery, lifting equipment, woodworking machinery, the automotive industry, industrial vehicles, metal processing machines, machine tools, casting machinery, port equipment, flat panel display equipment, semiconductor equipment, and other industries. Plastic cable drag chains are generally used in automated equipment due to their lightweight nature, facilitating the movement and operation of automated equipment. For operation in cleanrooms and vacuum environments, dust-free cable drag chains, also known as cleanroom cable drag chains, are required. These are used in cleanrooms to support electrical connections and loads, possessing properties such as wear resistance, non-gas release, non-dust accumulation, and resistance to acids, alkalis, and aging. They are typically fitted over the surface of cables and air pipes for sealing and dust prevention. Existing cleanroom cable chain housings typically consist of two interlocking shells. The shell surfaces are corrugated to allow for bending. One shell has its outer corrugated edge thickened to form an abutment surface 2.2, thus limiting the bending direction of the shell and ensuring the cable chain's bending direction while providing support for the cable. However, thickening the corrugated portion of the shell increases production costs and the weight of the cable chain.

[0033] To address the issue of existing cleanroom cable chains restricting bending direction, it is necessary to thicken the outer edge of the corrugated portion of one of the housings to form the contact surface 2.2, resulting in high production costs and excessive cable weight. Therefore, a cleanroom cable chain is proposed that reduces production costs and cable weight while improving cable stability.

[0034] In the above embodiment, a cleanroom cable chain restricts the bending direction of the cable chain outer shell by using abutment blocks 2. The abutment blocks 2 are disposed on the upper shell 1, ensuring that the cable chain outer shell can only bend towards the side without abutment blocks 2. After bending 180°, the upper and lower cable chain outer shells are distributed in parallel. The abutment blocks 2 are disposed on the support portion 1.1 of the upper shell 1, serving to limit the bending direction of the upper shell 1. Compared to the prior art method of forming the abutment portion by thickening the top edge of the support portion 1.1, the abutment block 2 has a smaller structure, reducing the production cost and weight of the cable chain. The abutment blocks 2 on two adjacent support portions 1.1 abut against each other, and a diagonal bracing surface 2.1 is provided between the abutment surface 2.2 of the abutment block 2 and the side of the support portion 1.1, serving to support the abutment block 2 and strengthening its strength on the support portion 1.1. The abutment blocks 2 on two adjacent support portions 1.1 provide stronger support when they abut against each other. After the cable chain outer shell is bent 180°, the upper and lower cable chain outer shells are distributed in parallel, which enhances the strength of the abutment block 2 and further provides stronger support for the cable.

[0035] Example 2, as Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 The cleanroom cable chain shown includes an outer shell, which comprises an upper shell 1 and a lower shell that are interlocked. Both the upper shell 1 and the lower shell have corrugated portions on their surfaces. The corrugated portion of the upper shell 1 includes at least two support portions 1.1 and extension portions 1.2 connected to the support portions 1.1. The support portions 1.1 are provided with abutment blocks 2, and the abutment blocks 2 on two adjacent support portions 1.1 abut against each other. The abutment blocks 2 are provided with inclined bracing surfaces 2.1 that are oppositely arranged on both sides of the abutment blocks 2. The inclined bracing surfaces 2.1 connect the abutment surfaces 2.2 of the abutment blocks 2 and the side surfaces of the support portions 1.1.

[0036] In this embodiment, as Figure 1 , Figure 2 , Figure 3 As shown, the abutment surfaces 2.2 of the abutment block 2 are arranged opposite each other on both sides of the abutment block 2, and the abutment block 2 is provided with a plane 2.3 connecting the abutment surfaces 2.2. When the cable chain is distributed in the horizontal direction, the abutment blocks 2 on two adjacent support parts 1.1 abut each other, and the planes 2.3 of the abutment blocks 2 on two adjacent support parts 1.1 are located in the same plane 2.3. The plane 2.3 plays a supporting role, so that the cable chain can be placed stably on the ground and dragged along the ground.

[0037] Further optimizations were made to the abutment block 2, such as... Figure 1 , Figure 2 , Figure 3As shown, the abutment block 2 has straight support surfaces 2.4 opposite to each other on both sides of plane 2.3, and a diagonal support surface 2.1 located between the two straight support surfaces 2.4 and connected to them. The straight support surfaces 2.4 are connected to the side and top edge of the support part 1.1. The straight support surfaces 2.4 and diagonal support surfaces 2.1 are used to support the four sides of the abutment block 2, the diagonal support surface 2.1 is used to support the abutment surface 2.2 and the side of the support part 1.1, and the straight support surface 2.4 is used to support the side and top edge of plane 2.3 and the support part 1.1. This makes the abutment block 2 more supportive.

[0038] Further optimizations were made to the abutment block 2, such as... Figure 1 , Figure 2 , Figure 3 As shown, the straight support surface 2.4 is perpendicular to the plane 2.3, and the straight support surface 2.4 is perpendicular to the inclined support surface 2.1. This makes the supporting performance of the abutment block 2 stronger and facilitates production.

[0039] Further optimizations were made to the abutment block 2, such as... Figure 1 , Figure 2 , Figure 3 As shown, each support portion 1.1 has two abutment blocks 2, which are symmetrically arranged at both ends of the support portion 1.1. The symmetrical arrangement of the abutment blocks 2 at both ends of the support portion 1.1 makes the structure more stable, enhances the strength of the cable chain, and further provides stronger support for the cable.

[0040] In this embodiment, the abutment part is formed by thickening the top edge of the support part 1.1. The abutment block 2 has a small structure, which reduces the production cost and weight of the cable chain. The abutment blocks 2 on two adjacent support parts 1.1 abut against each other, and a diagonal bracing surface 2.1 is provided between the abutment surface 2.2 of the abutment block 2 and the side of the support part 1.1 to support the abutment block 2 and strengthen the abutment block 2 on the support part 1.1. The abutment blocks 2 on two adjacent support parts 1.1 have a stronger supporting strength when they abut against each other. The increased strength of the cable chain shell further provides stronger support for the cable.

[0041] Example 3, as Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6The cleanroom cable chain shown includes an outer shell, which comprises an upper shell 1 and a lower shell that are interlocked. Both the upper shell 1 and the lower shell have corrugated portions on their surfaces. The corrugated portion of the upper shell 1 includes at least two support portions 1.1 and extension portions 1.2 connected to the support portions 1.1. The support portions 1.1 are provided with abutment blocks 2, and the abutment blocks 2 on two adjacent support portions 1.1 abut against each other. The abutment blocks 2 are provided with inclined bracing surfaces 2.1 that are oppositely arranged on both sides of the abutment blocks 2. The inclined bracing surfaces 2.1 connect the abutment surfaces 2.2 of the abutment blocks 2 and the side surfaces of the support portions 1.1.

[0042] In this embodiment, the support portion 1.1 includes a connecting segment 1.1.1 located in the middle of the support portion 1.1 and arc segments 1.1.2 located at both ends of the connecting segment 1.1.1. The abutment block 2 is located at the junction of the connecting segment 1.1.1 and the arc segments 1.1.2. The arc segments 1.1.2 at both ends of the support portion 1.1 enhance the strength of the cable chain and further provide stronger support for the cable.

[0043] The abutment block 2 is further optimized. The abutment surfaces 2.2 of the abutment block 2 are arranged opposite each other on both sides of the abutment block 2, and the abutment block 2 is provided with a plane 2.3 connecting the abutment surfaces 2.2. When the cable chain is distributed in the horizontal direction, the abutment blocks 2 on two adjacent support parts 1.1 abut each other, and the planes 2.3 of the abutment blocks 2 on two adjacent support parts 1.1 are located in the same plane 2.3. The plane 2.3 plays a supporting role, so that the cable chain can be placed stably on the ground and dragged along the ground.

[0044] The abutment block 2 is further optimized by providing straight support surfaces 2.4 positioned opposite each other on both sides of plane 2.3. An inclined support surface 2.1 is located between and connected to the two straight support surfaces 2.4. The straight support surfaces 2.4 are connected to the sides and top edge of the support part 1.1. The straight support surfaces 2.4 and 2.1 support the four sides of the abutment block 2, respectively. The 2.1 supports the abutment surface 2.2 and the sides of the support part 1.1, while the straight support surfaces 2.4 support the plane 2.3 and the sides and top edge of the support part 1.1. This enhances the support performance of the abutment block 2.

[0045] The abutment block 2 is further optimized, with the straight support surface 2.4 perpendicular to the plane 2.3 and the straight support surface 2.4 perpendicular to the inclined support surface 2.1. This makes the abutment block 2 more supportive and easier to manufacture.

[0046] The abutment block 2 is further optimized so that there are two abutment blocks 2 on any support part 1.1, and the two abutment blocks 2 are symmetrically arranged at both ends of the support part 1.1. The abutment blocks 2 are symmetrically arranged at both ends of the support part 1.1, which makes the structure more stable and enhances the strength of the cable chain, thus providing stronger support for the cable.

[0047] In this embodiment, the abutment part is formed by thickening the top edge of the support part 1.1. The abutment block 2 has a small structure, which reduces the production cost and weight of the cable chain. The abutment blocks 2 on two adjacent support parts 1.1 abut against each other, and a diagonal bracing surface 2.1 is provided between the abutment surface 2.2 of the abutment block 2 and the side of the support part 1.1 to support the abutment block 2 and strengthen the abutment block 2 on the support part 1.1. The abutment blocks 2 on two adjacent support parts 1.1 have a stronger supporting strength when they abut against each other. The increased strength of the cable chain shell further provides stronger support for the cable.

[0048] Example 4, as Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 The cleanroom cable chain shown includes an outer shell, which comprises an upper shell 1 and a lower shell that are interlocked. Both the upper shell 1 and the lower shell have corrugated portions on their surfaces. The corrugated portion of the upper shell 1 includes at least two support portions 1.1 and extension portions 1.2 connected to the support portions 1.1. The support portions 1.1 are provided with abutment blocks 2, and the abutment blocks 2 on two adjacent support portions 1.1 abut against each other. The abutment blocks 2 are provided with inclined bracing surfaces 2.1 that are oppositely arranged on both sides of the abutment blocks 2. The inclined bracing surfaces 2.1 connect the abutment surfaces 2.2 of the abutment blocks 2 and the side surfaces of the support portions 1.1.

[0049] In this embodiment, a wiring terminal is also provided at the end of the outer casing. The wiring terminal includes two interlocking terminal blocks 3, which are engaged outside the end of the outer casing and snapped into the outer casing.

[0050] The end block 3 is further optimized by providing at least two locking plates 3.1 on its inner wall to engage with the outer casing. The locking plates 3.1 engage with the corrugated portion on the outer casing. The presence of at least two locking plates 3.1 inside the end block 3 improves the connection strength between the terminal and the outer casing.

[0051] The end block 3 is further optimized by providing positioning components at the connection point of the two end blocks 3, which are positioned opposite each other on both sides of the wiring terminal. The positioning components include a positioning groove 3.2 on one end block 3 and a positioning plate 3.3 on the other end block 3. The positioning plate 3.3 is inserted into the positioning groove 3.2. The positioning groove 3.2 and the positioning plate 3.3 are used to position the two end blocks 3 for easy engagement.

[0052] The end block 3 is further optimized. The two end blocks 3 are connected by hexagonal bolts. The outer wall of the end block 3 is provided with a hexagonal groove 3.4 that mates with the hexagonal head of the hexagonal bolt. The hexagonal groove 3.4 prevents the hexagonal bolt from rotating and facilitates the fixing of the wiring terminal.

[0053] The abutment block 2 is further optimized. The abutment surfaces 2.2 of the abutment block 2 are arranged opposite each other on both sides of the abutment block 2, and the abutment block 2 is provided with a plane 2.3 connecting the abutment surfaces 2.2. When the cable chain is distributed in the horizontal direction, the abutment blocks 2 on two adjacent support parts 1.1 abut each other, and the planes 2.3 of the abutment blocks 2 on two adjacent support parts 1.1 are located in the same plane 2.3. The plane 2.3 plays a supporting role, so that the cable chain can be placed stably on the ground and dragged along the ground.

[0054] The abutment block 2 is further optimized by providing straight support surfaces 2.4 positioned opposite each other on both sides of plane 2.3. An inclined support surface 2.1 is located between and connected to the two straight support surfaces 2.4. The straight support surfaces 2.4 are connected to the sides and top edge of the support part 1.1. The straight support surfaces 2.4 and 2.1 support the four sides of the abutment block 2, respectively. The 2.1 supports the abutment surface 2.2 and the sides of the support part 1.1, while the straight support surfaces 2.4 support the plane 2.3 and the sides and top edge of the support part 1.1. This enhances the support performance of the abutment block 2.

[0055] The abutment block 2 is further optimized, with the straight support surface 2.4 perpendicular to the plane 2.3 and the straight support surface 2.4 perpendicular to the inclined support surface 2.1. This makes the abutment block 2 more supportive and easier to manufacture.

[0056] The abutment block 2 is further optimized so that there are two abutment blocks 2 on any support part 1.1, and the two abutment blocks 2 are symmetrically arranged at both ends of the support part 1.1. The abutment blocks 2 are symmetrically arranged at both ends of the support part 1.1, which makes the structure more stable and enhances the strength of the cable chain, thus providing stronger support for the cable.

[0057] In this embodiment, the abutment part is formed by thickening the top edge of the support part 1.1. The abutment block 2 has a small structure, which reduces the production cost and weight of the cable chain. The abutment blocks 2 on two adjacent support parts 1.1 abut against each other, and a diagonal bracing surface 2.1 is provided between the abutment surface 2.2 of the abutment block 2 and the side of the support part 1.1 to support the abutment block 2 and strengthen the abutment block 2 on the support part 1.1. The abutment blocks 2 on two adjacent support parts 1.1 have a stronger supporting strength when they abut against each other. The increased strength of the cable chain shell further provides stronger support for the cable.

[0058] The specific embodiments described above are merely preferred embodiments of this utility model and are not intended to limit the specific scope of implementation of this utility model. All equivalent changes made to the shape and structure of this utility model should be included within the protection scope of this utility model.

Claims

1. A dust-free cable chain, comprising an outer shell, the outer shell including an upper shell and a lower shell that interlock with each other, both the upper shell and the lower shell having corrugated portions on their surfaces, characterized in that, The corrugated portion of the upper housing includes at least two support portions and an extension portion connected to the support portions. Each support portion is provided with an abutment block, and the abutment blocks on two adjacent support portions abut against each other. Each abutment block is provided with inclined bracing surfaces that are arranged opposite to each other on both sides of the abutment block. The inclined bracing surfaces connect the abutment surface of the abutment block and the side of the support portion.

2. The dust-free cable chain according to claim 1, characterized in that, The abutting surfaces of the abutting blocks are arranged opposite each other on both sides of the abutting blocks, and the abutting blocks are provided with a plane connecting the abutting surfaces.

3. The dust-free cable chain according to claim 2, characterized in that, The abutment block is provided with straight support surfaces that are oppositely arranged on both sides of the plane. The inclined support surface is located between the two straight support surfaces and is connected to the straight support surfaces. The straight support surface is connected to the side and top edge of the support part.

4. A dust-free cable chain according to claim 3, characterized in that, The straight support surface is perpendicular to the plane, and the straight support surface is perpendicular to the inclined support surface.

5. A dust-free cable chain according to claim 1, 2, 3, or 4, characterized in that, Each support has two abutment blocks, which are symmetrically arranged at both ends of the support.

6. A dust-free cable chain according to claim 1, 2, 3, or 4, characterized in that, The support includes a connecting section located in the middle of the support and arc segments located at both ends of the connecting section, and the abutment block is located at the junction of the connecting section and the arc segments.

7. A dust-free cable chain according to claim 1, 2, 3, or 4, characterized in that, It also includes a wiring terminal provided at the end of the housing, the wiring terminal comprising two interlocking end blocks, the two end blocks being engaged with the outside of the end of the housing and snapped into the housing.

8. A dust-free cable chain according to claim 7, characterized in that, The inner wall of the end block is provided with at least two locking plates that engage with the outer shell, and the locking plates engage with the corrugated parts on the outer shell.

9. A dust-free cable chain according to claim 7, characterized in that, The connection point of the two end blocks is provided with positioning components that are oppositely arranged on both sides of the wiring end. The positioning components include a positioning groove on one end block and a positioning plate on the other end block, with the positioning plate inserted into the positioning groove.

10. A dust-free cable chain according to claim 7, characterized in that, The two end blocks are connected by hexagonal bolts, and the outer wall of the end blocks is provided with hexagonal grooves that mate with the hexagonal screw heads of the hexagonal bolts.

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