Straight side link chain

Abstract

The utility model discloses a straight edge chain piece chain, including inner chain piece and outer chain piece, inner chain piece and outer chain piece all are provided with a plurality, and inner chain piece is located at the inboard position of outer chain piece, the inboard position of outer chain piece is provided with a plurality of first through -hole, the inboard position of second through -hole is surrounded with annular ball accommodating groove, the device is sleeved with a plurality of steel ball in the inside of sleeve, and the steel ball is placed in the annular ball accommodating groove of chain piece inboard, to this limit sleeve and chain piece direct contact, convert sliding friction into the rolling friction of steel ball, utilize the oil effect when steel ball rolls, form dynamic lubricating layer, like this, reduce the friction coefficient through steel ball rolling, reduce sleeve and chain piece wear, prolong component life, can also effectively reduce the operating noise, further optimize the friction environment with the aid of dynamic lubricating layer, help to maintain the transmission precision of chain, reduce equipment maintenance frequency and cost, guarantee transmission stable operation.

Description

Technical Field

[0001] This utility model belongs to the technical field of straight-edge chain plates, specifically relating to a straight-edge chain plate. Background Technology

[0002] Straight-edge chain links are made of stainless steel and carbon steel, and their surfaces can be treated with different coatings such as galvanizing, nickel plating, Dacromet coating, and zinc-nickel alloy to adapt to various usage scenarios. As a core component of window openers, it must meet the core requirement of 10,000 opening and closing cycles without failure, and its standards in reliability and service life are far higher than those of industrial chains. The R&D process incorporates automotive engine chain technology and has undergone extensive simulation experiments, giving it high precision, long life, and corrosion resistance. At the same time, it is compatible with the compact structure of chain window openers, ensuring that the window opener has a large stroke and opening angle to improve the visual effect of the window while maintaining the appearance of the window during operation, which can meet the needs of most window openers.

[0003] When a straight-edge chain is in operation, the sleeve and the chain links are in contact with each other and there is relative movement. The resulting friction will directly aggravate the wear of the sleeve and the chain links, shorten their service life, and also generate noise. Long-term exposure to this friction will also reduce the transmission accuracy of the chain. Utility Model Content

[0004] The purpose of this utility model is to provide a straight-edge chain to solve the problem mentioned in the background art: when the straight-edge chain is in operation, the sleeve and the chain piece are in contact with each other and there is relative movement. The resulting friction will directly aggravate the wear of the sleeve and the chain piece, shorten their service life, and also generate noise. Long-term exposure to this friction will also reduce the transmission accuracy of the chain.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a straight-edge chain link, comprising inner chain links and outer chain links, wherein multiple inner chain links and outer chain links are provided, and the inner chain links are located inside the outer chain links. Multiple first through holes are provided on the inner side of the outer chain links, and second through holes are provided on the upper left and right sides of the inner side of the inner chain links. An annular ball receiving groove is surrounded on the outer side of the second through holes. A first through hole is provided on the lower inner side of the inner chain links. The left and right ends of both the inner and outer chain links are composed of straight-edge structures and arc-shaped grooves.

[0006] Preferably, when the inner chain piece and the outer chain piece are bonded together, the first through hole in the inner chain piece is aligned with the arc groove in the outer chain piece, and at the same time, the arc groove in the inner chain piece is aligned with the first through hole in the outer chain piece.

[0007] Preferably, the inner chain piece is attached to another inner chain piece, so that the two arc-shaped grooves form a circular structure. At this time, a pin is inserted at the inside position of the arc-shaped groove. The pin is inserted from the arc-shaped groove of the inner chain piece and passes through the first through hole in the outer chain piece.

[0008] Preferably, the outer chain piece and another outer chain piece are bonded together so that the arc-shaped groove forms a circular structure, into which another pin is inserted and enters the first through hole of the inner chain piece.

[0009] Preferably, multiple inner and outer chain pieces are connected in series to form movable links using multiple pins.

[0010] Preferably, the connection between the inner and outer chain pieces is such that the center of the second through hole is aligned with the center of the first through hole located at the upper part of the outer chain piece, and a sleeve is installed inside the inner chain piece, with a roller inserted into the inner channel of the sleeve.

[0011] Preferably, the roller passes through the second through hole and the first through hole, is fixed at the upper and lower ends of the sleeve by the limiting post, and is inserted into the inner position of the second through hole.

[0012] Preferably, grooves are provided at the inner positions of the upper and lower ends of the sleeve, the inner positions of the grooves are filled with solid grease, and steel balls are sleeved in the inner positions of the grooves. Part of the steel ball is located at the outer position of the sleeve, while the steel ball located in the groove is in contact with the solid grease. When the limiting post is inserted into the inner position of the second through hole, the steel ball enters the annular ball receiving groove.

[0013] Compared with the prior art, this utility model provides a straight-edge chain with the following advantages: This device incorporates multiple steel balls fitted inside the sleeve, which are then placed in an annular ball bearing groove inside the chain link. This restricts direct contact between the sleeve and the chain link, converting sliding friction into rolling friction of the steel balls. Simultaneously, solid grease is applied inside the sleeve. Utilizing the oil-carrying effect of the rolling steel balls, the grease is continuously and evenly coated onto the inner wall of the chain link connection hole, forming a dynamic lubrication layer. This significantly reduces the coefficient of friction through the rolling of the steel balls, minimizing wear on the sleeve and chain link, extending component lifespan, and effectively reducing operating noise. Furthermore, the dynamic lubrication layer further optimizes the friction environment, helping to maintain chain drive accuracy, reduce equipment maintenance frequency and costs, and ensure stable transmission operation.

[0014] Compared to the original structure that relies solely on the arc-shaped end faces of the chain links for support, the straight-edge chain link adopts a composite structural design that combines straight-edge bearing, arc positioning, and pin engagement. This achieves a dual improvement in both pushing strength and operational stability. The straight edge serves as the main bearing surface, providing a large-area, rigid support foundation for the chain. Meanwhile, the edges of the holes where the chain links and pins engage are machined with precise arc positioning structures. This arc contour forms a highly fitting curved surface contact with the outer circular surface of the pin. During assembly, after the pin passes through the connecting hole of the chain link, its cylindrical surface forms a tight mechanical engagement with the arc positioning structure of the chain link. This creates a dual radial and axial limit when the chain link is under stress, fundamentally solving the problem of the original structure where the chain links rely solely on the arc-shaped end faces for connection and are prone to lateral misalignment due to uneven stress. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of a straight-edge chain link structure according to the present invention.

[0016] Figure 2 This is a top view schematic diagram of a straight-edge chain link according to the present invention.

[0017] Figure 3 This is a schematic diagram of the inner chain structure of a straight-edge chain of the present invention.

[0018] Figure 4 This is a schematic diagram of the structure of a straight-edge chain piece outer chain of this utility model.

[0019] Figure 5 This is a schematic diagram of a straight-edge chain sleeve structure according to the present invention.

[0020] Figure 6 This is a schematic diagram of the cross-sectional structure of a straight-edge chain sleeve according to the present invention.

[0021] In the diagram: 1. Inner chain link; 2. Outer chain link; 3. Pin; 4. Roller; 5. Straight edge structure; 6. Sleeve; 7. Annular ball bearing receiving groove; 8. First through hole; 9. Second through hole; 10. Limiting post; 11. Steel ball; 12. Solid grease; 13. Groove; 14. Channel; 15. Arc groove. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0023] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0024] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," and "connected," etc., should be interpreted broadly. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. The utility model provides, for example Figure 1-6 The straight-edge chain shown includes an inner chain piece 1 and an outer chain piece 2. Multiple inner chain pieces 1 and multiple outer chain pieces 2 are provided. The inner chain piece 1 is located inside the outer chain piece 2. Multiple first through holes 8 are provided inside the outer chain piece 2. Second through holes 9 are provided on the upper left and right sides of the inner side of the inner chain piece 1. An annular ball receiving groove 7 surrounds the outer side of the second through holes 9. The first through hole 8 is provided at the lower inner side of the inner chain piece 1. The left and right ends of the inner chain piece 1 and the outer chain piece 2 are both composed of a straight edge structure 5 and an arc groove 15.

[0025] When the straight-edge chain is in operation, the pin 3 passes through the chain link connection hole, and together with the sleeve 6 and roller 4, multiple chain links are connected in series to form flexible chain links, thus forming a closed chain. When the chain is engaged with the sprocket, the sprocket teeth interact with the roller 4 on the outside of the chain, and the drive device drives the sprocket to rotate. During the movement, the pin 3 transmits torque or traction force, driving the entire chain to rotate synchronously. The straight edge of the chain link provides a stable support surface, preventing the chain link from being misaligned laterally and ensuring the stability of operation.

[0026] like Figure 1 and Figure 3As shown, when the inner link 1 and the outer link 2 are attached, the first through hole 8 in the inner link 1 is aligned with the arc groove 15 in the outer link 2. At the same time, the arc groove 15 in the inner link 1 is aligned with the first through hole 8 in the outer link 2. The inner link 1 is attached to another inner link 1, so that the two arc grooves 15 form a circular structure. At this time, a pin 3 is inserted into the inner position of the arc groove 15. The pin 3 is inserted from the arc groove 15 of the inner link 1 and passes through the first through hole 8 in the outer link 2. The outer link 2 is attached to another outer link 2, so that the arc grooves 15 form a circular structure. Another pin 3 is inserted and enters the first through hole 8 of the inner link 1. Through multiple pins 3, multiple inner link 1 and outer link 2 are connected in series to form a movable link.

[0027] The straight edge serves as the main load-bearing surface, providing a large-area, rigid support base for the chain. The edge of the hole where the chain link mates with the pin 3 is machined into a precise arc positioning structure. This arc contour forms a highly fitted curved surface contact with the outer circular surface of the pin 3. During assembly, after the pin 3 passes through the connecting hole of the chain link, its cylindrical surface forms a tight mechanical engagement with the arc positioning structure of the chain link, creating a dual radial and axial limit when the chain link is under force support.

[0028] like Figure 3 and Figure 6 As shown, the connection between the inner link 1 and the outer link 2 aligns the center of the second through hole 9 with the center of the first through hole 8 located at the upper part of the outer link 2. A roller 4 is inserted into the internal channel 14 of the sleeve 6, passing through the second through hole 9 and the first through hole 8. A limiting post 10, fixed at both ends of the sleeve 6, is inserted into the inner part of the second through hole 9. Grooves 13 are provided at both ends of the sleeve 6, filled with solid grease 12. A steel ball 11 is fitted into the inner part of the groove 13, with part of the steel ball 11 located outside the sleeve 6, while the steel ball 11 in the groove 13 adheres to the solid grease 12. When the limiting post 10 is inserted into the inner part of the second through hole 9, the steel ball 11 enters the annular ball receiving groove 7.

[0029] The steel ball 11 is placed in the annular ball receiving groove 7 inside the chain link, thereby limiting the direct contact between the sleeve 6 and the chain link and converting the sliding friction into the rolling friction of the steel ball 11. At the same time, solid grease 12 is provided inside the sleeve 6. By utilizing the oil-carrying effect when the steel ball 11 rolls, the grease is continuously and evenly applied to the inner wall of the chain link connecting hole to form a dynamic lubrication layer. In this way, the coefficient of friction is greatly reduced by the rolling of the steel ball 11.

[0030] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A straight-edge chain, characterized in that, It includes an inner chain piece (1) and an outer chain piece (2). Both the inner chain piece (1) and the outer chain piece (2) are provided in multiples. The inner chain piece (1) is located inside the outer chain piece (2). The inner side of the outer chain piece (2) is provided with multiple first through holes (8). The upper left and right sides of the inner side of the inner chain piece (1) are provided with second through holes (9). The outer side of the second through holes (9) is surrounded by an annular ball receiving groove (7). The lower inside of the inner chain piece (1) is provided with a first through hole (8). The left and right ends of the inner chain piece (1) and the outer chain piece (2) are both composed of a straight edge structure (5) and an arc groove (15).

2. The straight-edge chain according to claim 1, characterized in that: When the inner chain piece (1) and the outer chain piece (2) are attached, the first through hole (8) in the inner chain piece (1) is aligned with the arc groove (15) in the outer chain piece (2), and at the same time, the arc groove (15) in the inner chain piece (1) is aligned with the first through hole (8) in the outer chain piece (2).

3. A straight-edge chain according to claim 2, characterized in that: The inner chain piece (1) is attached to another inner chain piece (1) so that the two arc grooves (15) form a circular structure. At this time, a pin (3) is inserted at the inner position of the arc groove (15). The pin (3) is inserted from the arc groove (15) of the inner chain piece (1) and passes through the first through hole (8) in the outer chain piece (2).

4. A straight-edge chain according to claim 3, characterized in that: The outer chain piece (2) and another outer chain piece (2) are attached to form a circular structure in the arc groove (15), and the other pin (3) is inserted into the first through hole (8) of the inner chain piece (1).

5. A straight-edge chain according to claim 4, characterized in that: Multiple inner chain pieces (1) and outer chain pieces (2) are connected in series through multiple pins (3) to form movable chain links.

6. A straight-edge chain according to claim 1, characterized in that: The connection between the inner chain piece (1) and the outer chain piece (2) is such that the center of the second through hole (9) is aligned with the center of the first through hole (8) located at the upper part of the outer chain piece (2). A sleeve (6) is installed inside the inner chain piece (1), and a roller (4) is inserted into the inner channel (14) of the sleeve (6).

7. A straight-edge chain according to claim 6, characterized in that: The roller (4) passes through the second through hole (9) and the first through hole (8), and is fixed at the upper and lower ends of the sleeve (6) by the limiting post (10) and inserted into the inner position of the second through hole (9).

8. A straight-edge chain according to claim 7, characterized in that: The sleeve (6) has grooves (13) at its upper and lower ends. The grooves (13) are filled with solid grease (12). A steel ball (11) is fitted inside the groove (13). Part of the steel ball (11) is located outside the sleeve (6), while the steel ball (11) in the groove (13) is in contact with the solid grease (12). The limiting post (10) is inserted into the second through hole (9), and the steel ball (11) enters the annular ball receiving groove (7).

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