WO2008049361A1 - Demountable wear resistant chains - Google Patents

Abstract

A demountable wear resistant chains, comprises many links connected, two links form a group, each group includes two inner plates (1) and two outer plates (2). There are two holes for pin shaft on the inner plates and the outer plates. There is a circular flange (8) on the inside of the holes for pin shaft of the inner plate. Each group also includes the sleeve (4) and a pin shaft (3). There is a recess (7) on each side of the pin shaft. The hole for pin shaft includes a aperture (5) and a guide slot (6), the diameter of the aperture fits the diameter of the pin shaft with the tolerance, the guide slot accommodates the recesses of the pin shaft, the aperture and the guide slot form a hole in anomalistic shape. This chain can be easily attachable and detachable without any tool, and recipient for lubricant can be mounted on the chains for improve the wear resistant capability.

Description

 [Technical Field]

 The utility model belongs to the field of chains of mechanical transmission devices, in particular to a chain which can be easily disassembled without using any tools.

【Background technique】

 In the current mechanical field, the chain is the most commonly used transmission method, and it is widely used in the mechanical field. However, the current chain is connected in a fixed manner, except that a detachable chain card is provided as the only part of the chain in the connector portion of the chain. In addition, if you need to use special tools when disassembling, especially after disassembling the chain card, you need to remove the chain links, not only need special tools but also need some demolition technology to complete. For example: In the process of using a bicycle, if there is a problem with the chain in the middle and needs to be disassembled, there is almost no way to complete without a dedicated tool. In addition, the chain has a simple structure and no special space for storing lubricating oil. Therefore, the chain often works under the condition of insufficient lubricant, which causes serious wear of the chain and greatly shortens the service life of the chain. The above problems have long existed in the industry, but there has never been a very effective solution.

[Summary of the Invention]

 The purpose of the utility model is to provide a new type of chain which can be easily disassembled without using any tools. The other purpose of the utility model is to provide a lubricating oil storage device on the chain to improve the work of the chain. surroundings.

In order to achieve the above technical purpose, the technical solution adopted by the utility model includes the following contents: A wear-resistant chain that can be easily disassembled, including a multi-section chain connected to each other, Each of the two chain segments comprises a plurality of inner plates and two outer plates, and the inner plate and the outer plate are provided with two pin holes, and the inner side of the pin holes of the inner plate is provided a circular boss, and a sleeve and a pin for connecting the inner and outer plates, the pin shafts are provided with annular grooves at both ends, and the pin holes include guide grooves through the guide holes The guiding hole is matched with the diameter of the pin shaft, and the guiding groove is matched with the groove of the shaft end of the pin shaft, and the guiding groove and the guiding hole are merged with each other to form a special-shaped through hole.

 The inner panel is provided with two raised card points on the outer side.

 The card point is located at the outer edge of the outer panel after the outer panel is installed.

 The card points are formed by protrusions formed by stamping.

 After the pin and the inner panel are completed, a card is provided in the half moon hole between the pin and the introduction hole.

 The card board is made of an adsorbent material.

The adsorbent material is a sponge, a felt pad, and a cotton pad. By adopting the above technical solution, the utility model obtains the following technical advantages and effects: By adopting a structure in which a lead-in hole and a guide groove are provided to fit a groove at the axial end of the pin shaft, it is possible to realize easy disassembly and assembly without any tools. In the case of the case, the chain can be detached and assembled at will. Easy to maintain and maintain the chain. In the field, it is easy to repair the chain; because the inner plate, the outer part, the pin shaft and the structure of the introduction hole and the guide groove adopt a clearance fit, since the pin of the chain is freely rotatable, this is different. In the traditional chain. The pin of the conventional chain is riveted with the outer piece of the chain. When the chain rotates, only a small part of the surface of one side of the pin can be worn, so that the side of the pin is easily worn, resulting in a long chain length. Seriously affect the service life. In addition, the sponge block in this structure has the function of oil storage, which can continuously penetrate into the inside of the chain to keep the internal oil sufficient, prevent the chain from dry grinding, thereby improving the wear resistance and service life of the chain; Way can also produce another one Advantages, because the pin can rotate freely, which is equivalent to adding a rolling friction, reducing the static friction inside the chain, thereby reducing the rotational resistance of the chain, making the entire transmission system more flexible; in addition, because the pin and the outer piece are not The riveting and pressing combination can be freely rotated. Compared with the chain of the same specification, the chain has a larger arc than the ordinary chain, and has a stronger adaptability in the chain shifting device, thereby improving the shifting performance of the chain.

[Description of the Drawings]

 Figure 1 is an exploded view of the utility model;

 2 is a schematic view of the outer panel of the present invention ready to be mounted to the inner panel;

 Figure 3 is a schematic view showing the outer panel of the utility model mounted on the inner panel;

 Figure 4 is a schematic view of the utility model after completing the installation of the multi-section chain;

 Figure 5 is a cross-sectional view taken along line A-A of Figure 7 of the present invention;

 Figure 6 is a schematic view showing the structure of the chain installation of the present invention. 【detailed description】

 The present invention will be further described below with reference to the accompanying drawings:

As shown in FIG. 1 to 5, the wearable chain disclosed in the present invention can be easily disassembled, and comprises a multi-section chain connected to each other, wherein each two-section chain comprises a set of two inner plates 1 and two. The outer plate 2, the inner plate 1 and the outer plate 2 are provided with two pin holes, and the inner side of the pin hole of the inner plate 1 is provided with a circular annular boss 8 for the boss 8 The function is to fix and install the sleeve 4, and the pin shaft 3 is provided with annular grooves 7 at both ends thereof. In some of the previous novel chains, the sleeve 4 and the pin for connecting the inner plate 1 and the outer plate 2 are used. The shaft 3 has been constructed to have an annular groove 7 provided at the axial end of the pin shaft 3, but the above structure is only used in the chain card portion of the chain for use in the connection of the ends of the chain, that is, as a chain card. Once the above components are installed, they form a common chain. The improvement made by the utility model mainly lies in the setting The pin hole on the outer panel 2 is composed of a guide hole 5 and a guide groove 6, which is located on the chain outer panel 2, and is provided with two. The specific structure is a U-shaped through hole, that is, a portion of the guiding groove 6, and a circular through hole, that is, a portion of the introducing hole 5, which is formed by merging each other, and one of the guiding hole 5 and the pin 3 The diameter clearance fits, even if the diameter of the pin 3 is slightly smaller than the introduction hole 5, the above-mentioned pin 3 can be inserted into the introduction hole 5. The guiding groove 6 is clearance-fitted with the groove 7 at the axial end of the pin shaft 3, so that after the pin 3 is inserted into the introduction hole 5, the above-mentioned annular groove 7 of the shaft end and the guiding groove 6 can be engaged. The pin 3 enters the guide groove 6 for installation.

 As shown in Fig. 1-5, another important improvement in the present invention is that the inner panel 1 is provided with two raised latches 9 on the outer side. The function of the two card points 9 is to prevent the chain from falling off due to vibration during operation after the above-mentioned chain is installed. As shown in FIG. 6, after the above-mentioned guide groove 6 is mounted with the pin 3, the position of the axis of the pin 3 is located exactly at the center of the outer arc of the chain outer plate 2, and the circular through hole of the introduction hole 5 is Located on the other side of the inner lead-in hole 5 of the outer panel 2. The above-mentioned card point 9 is located on the outer edge of the outer arc of the outer plate 2, and the above-mentioned card point 9 and the outer edge of the arc of the outer plate 2 are provided with a small gap. As can be seen from the above structure, when the outer panel 2 is attached and detached, the inner panel 1 and the outer panel 2 must be rotated by a position close to 90 degrees, that is, after being rotated to the mounting shaft 3, The above outer panel 2 can be removed or attached when the pin 3 axis is at a position after the point where the perpendicular line intersects the outer contour arc of the chain. The card point 9 provided on the inner panel 1 is located at the outer edge of the outer panel 2 after the outer panel 2 is mounted. As shown in Figure 5, it can only prevent the chain from disjointing because it is only placed on the outer edge. In order to reduce the cost of production, the above-mentioned card point 9 can be constituted by a projection formed by punching. That is, two convex click points 9 of opposite directions are punched out from the inner side of the inner panel 1.

As shown in FIG. 3, the chain formed after the installation in the structure of the present invention has a half-moon gap between the introduction hole 5 and the pin shaft 3 provided on the outer plate 2, and the pin After the shaft 3 and the inner panel 1 outer panel 2 are installed, between the pin 3 and the introduction hole 5 A card 10 is provided in the half moon hole. The card board 10 is made of an adsorbent material. The adsorbing material is made of a material having a function of adsorbing lubricating oil such as a sponge, a felt pad, and a cotton pad. The lubricating oil is adsorbed in the card plate 10. The above-mentioned card has two main functions, namely, preventing the above-mentioned half-moon hole from storing some dirt or sand, causing rapid wear on the chain. Further, since the above-mentioned card 10 is adsorbed with lubricating oil, the card 10 is continuously compressed by the vibration of the chain during movement, so that the lubricating oil therein can be continuously infiltrated into the chain for lubrication.

 As shown in Fig. 1 to 4, the assembly method is such that the inner end of the sleeve 4 is fitted with a chain inner plate 1, and the sleeve 4 and the inner plate 1 are gap-fitted, and the sleeve 4 can be freely rotated therein. Further, an outer panel 2 is attached to the inner panel 1, and the inner panel 1 is 90 degrees perpendicular to the center line of the outer panel 2. And the outer plate 2 introduction hole 5 coincides with the center of the inner plate hole, and then the pin 2 is freely passed through the small hole, and then the outer plate 2 is pulled along the center line of the outer plate 2, so that the pin 3 enters the outer plate along the guiding groove 6. 2 pin holes. Then, the outer plate 2 is rotated, the center line of the outer plate 2 is overlapped with the center line of the inner plate 1, and the card 10 formed of the sponge body is placed in the pin introduction hole 5 of the outer plate 2, so that the main assembly is completed. When disassembling, the sponge body plate 10 must be taken out first, then the outer plate 2 is turned to the shaft by nearly 90 degrees, and then the pin 3 is retracted along the introduction groove 6 of the outer plate 2 to the introduction hole 5 of the outer plate 2, so as to be taken out. The pin 3 is thereby disassembled from the chain.

Claims

Claim A wearable chain that is easily detachable, comprising a multi-section chain connected to each other, wherein each two-section chain comprises a set of two inner plates and two outer plates, the inner plate and the outer plate Two pin holes are provided, the inner side of the inner pin shaft hole is provided with a circular boss, and a sleeve and a pin for connecting the inner plate and the outer plate, the pin ends An annular groove is provided, wherein: the pin hole comprises a through hole formed by a guiding hole guiding groove, and the guiding hole is matched with a diameter of the pin shaft, and the bow 1 guide groove and the pin The groove of the shaft end of the shaft is gap-fitted, and the guiding groove and the introducing hole are fused to each other to form a shaped through hole. 2. A wear-resistant chain that can be easily disassembled according to claim 1, wherein: the inner panel is provided with two raised latch points on an outward side. 3. A wear-resistant chain that can be easily disassembled according to claim 2, wherein: the card point is located at an outer edge of the outer panel after the outer panel is installed. 4. A wear-resistant chain that can be easily disassembled according to claim 2, wherein: the card points are formed by protrusions formed by stamping. 5. The wear-resistant chain that can be easily disassembled according to claim 1, wherein: after the pin and the outer plate of the inner plate are installed, a half-moon hole is formed between the pin and the introduction hole. There are cards. 6. A wear-resistant chain that can be easily disassembled according to claim 5, wherein: the card board is made of an adsorbent material. 7. A wear-resistant chain that can be easily disassembled according to claim 6, wherein: the adsorbent material is a sponge, a felt pad, a cotton pad, and a lubricating oil is adsorbed therein.