Combined chain structure

Abstract

The utility model relates to the technical field of chain structures, and discloses a combined chain structure which comprises an inner link, a pin shaft is rotatably connected to an inner cavity of the inner link, a first outer chain plate is fixed to one end of the pin shaft, a second outer chain plate is sleeved on the surface of the pin shaft, and a connecting assembly is arranged on the surface of the pin shaft on the outer side of the second outer chain plate. The connecting assembly comprises a clamping groove, the clamping groove is formed in the portion, on the outer side of the second outer chain plate, of the surface of the pin shaft, a first clamping block and a second clamping block are arranged in an inner cavity of the clamping groove, and a fixing screw is jointly in threaded connection with an inner cavity of the first clamping block and an inner cavity of the second clamping block. Due to the fact that the clamping blocks are connected through the clamping springs, combination between the clamping blocks is firmer, the risk that the chain falls off and loosens due to breakage of the clamping springs is effectively prevented, the service life of the chain is prolonged, the safety performance of the chain is improved, and due to the design of screw connection, non-professionals only need to simply rotate the screws to complete dismounting work of the clamping blocks. And complicated tools and operation steps are not needed.

Description

TECHNICAL FIELD

[0001] The utility model relates to chain structure technical field, concretely is a combined chain structure. BACKGROUND

[0002] At present, chain is widely used in various mechanical transmission systems, for example, bicycle, car, industrial automation equipment etc., the traditional chain structure is usually composed of chain ring and chain plate, the chain ring is connected together through the pin shaft on the chain plate, forms closed loop structure, and its main function is to convert linear motion into rotary motion or vice versa;

[0003] At present, chain is widely used in various mechanical transmission systems, for example, bicycle, car, industrial automation equipment etc., the traditional chain structure is usually composed of chain ring and chain plate, the chain ring is connected together through the pin shaft on the chain plate, forms closed loop structure, and its main function is to convert linear motion into rotary motion or vice versa;

[0004] In view of this, the utility model discloses a combined chain structure to solve the above technical problem. UTILITY MODEL CONTENTS

[0005] In view of the deficiencies in the above background art, the utility model provides a combined chain structure technical scheme, designs a connecting assembly, the connecting assembly is composed of two screw linkage's clamping blocks, the clamping block is fixed around the pin shaft, and the clamping block is firmly combined in the mode of screw connection, replaces the original separate snap spring, thereby the strength and safety of the connecting assembly are improved, the risk that the snap spring breaks and causes chain to fall off and loosen is effectively prevented, due to the characteristics of screw connection, non-professionals can only rotate the screw to disassemble the clamping block, and then easily complete the disassembly work of the chain, thereby the maintenance convenience of the chain is improved.

[0006] The utility model provides the following technical scheme: a combined chain structure, which comprises an inner chain link;

[0007] The inner cavity of the inner chain link is rotationally connected with a pin shaft, one end of the pin shaft is fixed with a first outer chain plate, the surface of the pin shaft is sleeved with a second outer chain plate, the surface of the pin shaft outside the second outer chain plate is provided with a connecting assembly for fixing and limiting the pin shaft;

[0008] The connecting assembly comprises a clamping groove, the clamping groove is arranged on the surface of the pin shaft outside the second outer chain plate, the inner cavities of the clamping groove are respectively provided with a first clamping block and a second clamping block, and the inner cavities of the first clamping block and the second clamping block are threadedly connected with a fixing screw.

[0009] As a preferred technical scheme of the utility model, the number of the pin shafts is two, and one end of the two pin shafts is fixedly connected with the surface of the first outer chain plate, and the inner cavities of the second outer chain plate are collectively sleeved on the surface of the two pin shafts.

[0010] As a preferred technical scheme of the utility model, the number of the fixed screws is two, and the top end of the two fixed screws is provided with a hexagonal hole.

[0011] As a preferred technical scheme of the utility model, the first clamping block and the second clamping block are symmetrically designed, and the shape of the first clamping block is same as the shape of the second clamping block.

[0012] As a preferred technical scheme of the utility model, the inner diameter of the first clamping block and the second clamping block is equal to the outer diameter of the clamping groove, and the width of the first clamping block and the second clamping block is equal to the width of the clamping groove.

[0013] As a preferred technical scheme of the utility model, the outer diameter of the pin shaft is equal to the inner diameter of the inner cavity of the second outer chain plate and the inner diameter of the inner cavity of the inner chain link.

[0014] Compared with the prior art, the utility model has the following beneficial effects:

[0015] 1、 The utility model discloses a connecting assembly that is composed of two clamping blocks that can be connected by screws, which replaces the original separate clamping spring structure, significantly improves the strength and safety of the connecting assembly, and specifically, the clamping spring in the prior art is prone to breaking due to weak material and limited strength during long-term use, resulting in problems such as loss, falling or loosening of the chain connection, while the utility model adopts a screw connection mode, which makes the combination between the clamping blocks more firm, effectively prevents the chain from falling off and loosening due to the breaking of the clamping spring, and thus improves the service life and safety performance of the chain.

[0016] 2、 The utility model not only improves the strength of the connecting assembly, but also significantly improves the maintenance convenience of the chain. Since the screw connection design is adopted, non-professionals can complete the disassembly work of the clamping block by simply rotating the screw, without the need for complex tools and operation steps. This design not only simplifies the maintenance process and reduces the maintenance cost, but also enables ordinary users to easily disassemble and maintain the chain, improving the user experience. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a structural schematic view of the utility model;

[0018] Figure 2 It is a front view of the utility model;

[0019] Figure 3 It is a sectional view of the utility model;

[0020] Figure 4 The disassembling view of the present application.

[0021] In the figure: 1, inner chain link; 2, pin shaft; 201, first outer chain plate; 202, second outer chain plate; 3, clamping groove; 301, first clamping block; 302, second clamping block; 303, fixing screw; 4, hexagonal hole. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present application will be clearly and completely described with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the present application.

[0023] Embodiment one,

[0024] Please refer to Figures 1-4As shown, a combined chain structure, including the inner chain 1, the inner cavity of the inner chain 1 is rotatably connected with the pin shaft 2, one end of the pin shaft 2 is fixed with the first outer chain plate 201, the surface of the pin shaft 2 is sleeved with the second outer chain plate 202, the surface of the pin shaft 2 outside the second outer chain plate 202 is provided with a connecting assembly for fixing and limiting the pin shaft 2, the connecting assembly comprises a clamping groove 3, the clamping groove 3 is arranged on the surface of the pin shaft 2 outside the second outer chain plate 202, by arranging the clamping groove 3, the clamping groove 3 is mainly used for clamping the first clamping block 301 and the second clamping block 302, the inner cavity of the clamping groove 3 is respectively provided with the first clamping block 301 and the second clamping block 302, by arranging the first clamping block 301 and the second clamping block 302, the first clamping block 301 and the second clamping block 302 are mainly used for clamping into the inner cavity of the clamping groove 3, then the pin shaft 2 is fixed and limited, the inner cavities of the first clamping block 301 and the second clamping block 302 are threadedly connected with the fixing screw 303, by arranging the fixing screw 303, the fixing screw 303 is mainly used for connecting the first clamping block 301 and the second clamping block 302, so that the first clamping block 301 and the second clamping block 302 are combined, then the pin shaft 2 is fixed and limited, the number of the pin shaft 2 is two, and one end of the two pin shafts 2 is fixedly connected with the surface of the first outer chain plate 201, the inner cavities of the second outer chain plate 202 are sleeved on the surfaces of the two pin shafts 2, the number of the fixing screw 303 is two, the top ends of the two fixing screws 303 are provided with hexagonal holes 4, by arranging the hexagonal hole 4, the inner cavity of the hexagonal hole 4 is mainly used for connecting the hexagonal wrench, then the fixing screw 303 can be disassembled by rotating the hexagonal wrench, the first clamping block 301 and the second clamping block 302 are designed symmetrically, the shape of the first clamping block 301 is the same as that of the second clamping block 302, the inner diameter of the first clamping block 301 and the second clamping block 302 is equal to the outer diameter of the clamping groove 3, the width of the first clamping block 301 and the second clamping block 302 is equal to the width of the clamping groove 3, the outer diameters of the pin shafts 2 are equal to the inner diameters of the inner cavities of the second outer chain plate 202 and the inner chain 1.

[0025] In use, first one of the pin shafts 2 is inserted into the inner cavity of the inner chain 1, when the surface of the first outer chain plate 201 abuts against the rear surface of the inner chain 1, then the second outer chain plate 202 is sleeved on the surfaces of the two pin shafts 2, finally the first clamping block 301 and the second clamping block 302 are clamped into the inner cavities of the clamping grooves 3, then the two fixing screws 303 are screwed into the inner cavities of the first clamping block 301 and the second clamping block 302, so that the first clamping block 301 and the second clamping block 302 relatively move and combine, so that the first clamping block 301 and the second clamping block 302 are clamped into the inner cavities of the clamping grooves 3, the pin shaft 2 is fixed and limited.

[0026] When the chain needs to be disassembled, first connect the hexagonal wrench to the inner cavity of the hexagonal hole 4, then rotate the hexagonal wrench, sequentially disassemble the two fixing screws 303, after the fixing screws 303 are disassembled, sequentially take out the first clamping block 301 and the second clamping block 302 from the inner cavity of the clamping groove 3, then pull out the second outer chain plate 202 from the surface of the pin shaft 2, and finally pull out the first outer chain plate 201 and the pin shaft 2 from the inner cavity of the inner chain link 1.

[0027] It should be noted that, in this document, the terms such as first and second, etc. are merely used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "contain" or any other variants thereof are intended to cover non-exclusive inclusion, so that the process, method, article or equipment including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such process, method, article or equipment. Meanwhile, in the drawings of the utility model, the filling pattern is only for distinguishing the layers, and does not have any other limitation.

[0028] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A modular chain structure comprising: Inner chain (1); It is characterized in that the inner cavity of the inner chain (1) is rotatably connected with a pin shaft (2), one end of the pin shaft (2) is fixed with a first outer chain plate (201), the surface of the pin shaft (2) is sleeved with a second outer chain plate (202), the surface of the pin shaft (2) outside the second outer chain plate (202) is provided with a connecting assembly for fixing and limiting the pin shaft (2). The connecting assembly comprises a clamping groove (3), the clamping groove (3) is arranged on the surface of the pin shaft (2) outside the second outer chain plate (202), the inner cavity of the clamping groove (3) is respectively provided with a first clamping block (301) and a second clamping block (302), and the inner cavities of the first clamping block (301) and the second clamping block (302) are threadedly connected with a fixing screw (303).

2. A modular chain structure according to claim 1, wherein: The number of the pin shaft (2) is two, and one end of the two pin shafts (2) is fixedly connected with the surface of the first outer chain plate (201), and the inner cavities of the second outer chain plate (202) are sleeved on the surfaces of the two pin shafts (2).

3. A modular chain structure according to claim 1, wherein: The number of the fixing screw (303) is two, and the top of the two fixing screws (303) is provided with a hexagonal hole (4).

4. The modular chain structure of claim 1, wherein: The first clamping block (301) and the second clamping block (302) are symmetrically designed, and the shape of the first clamping block (301) is the same as that of the second clamping block (302).

5. The modular chain structure of claim 1, wherein: The inner diameter of the first clamping block (301) and the second clamping block (302) is equal to the outer diameter of the clamping groove (3), and the width of the first clamping block (301) and the second clamping block (302) is equal to the width of the clamping groove (3).

6. A modular chain structure according to claim 1, wherein: The outer diameter of the pin shaft (2) is equal to the inner diameter of the inner cavity of the second outer chain plate (202) and the inner diameter of the inner cavity of the inner chain (1).

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