Card for assembling automobile transmission chain belt

Abstract

A card for assembling an automobile transmission chain belt solves the problems that an existing card is large in size, inconvenient to insert and low in assembling efficiency. Comprising a chain plate and a clamping piece, a plurality of coaxial pin shaft penetrating holes are formed in the left side edge and the right side edge of the chain plate, and the two pin shaft penetrating holes in the left side head end and the right side tail end communicate with limiting holes perpendicular to the pin shaft penetrating holes; the clamping piece is of a flat structure and is composed of a front plane, a rear plane and a side edge, and the front plane and the rear plane are perpendicular to the pin shaft penetrating hole. When the clamping piece is inserted into the pin shaft penetrating hole from the limiting hole, the limiting protruding block is clamped into the pin shaft penetrating hole, the wide portion of the upper end of the clamping piece is limited in the limiting hole, the side edge of the clamping piece is of a conical structure with the wide upper portion and the narrow lower portion, and a taking-out groove sunken upwards is formed in the narrow portion of the lower end of the clamping piece. The design is small in size, low in cost, high in strength and more stable, the attractiveness is improved through hidden installation, disassembly and installation are convenient, and the assembly efficiency is improved.

Description

Technical Field

[0001] This utility model belongs to the field of automotive transmission chain technology, and in particular relates to a card for assembling automotive transmission chains. Background Technology

[0002] In the field of automotive transmission belts, the fixing of the chain plates and pins typically relies on limit cards to achieve the function of preventing slippage. However, the card structure in the existing technology generally has the following drawbacks:

[0003] The shortcomings of existing cards significantly restrict production efficiency and product performance. Traditional cards generally adopt a bulky "Z"-shaped structure design, which not only leads to material waste and increases the overall weight of the chain, but also exposes itself on the chain plate surface after installation, ruining the neat appearance. Assembly efficiency is reduced when splicing multiple chain plates, and the structural design is prone to interference with the pins, affecting the smoothness of insertion and removal, and increasing maintenance difficulty.

[0004] The aforementioned problems are particularly prominent in automotive automated conveyor lines, which urgently require a new type of compact, high-strength, and easy-to-assemble card structure to improve the reliability, maintenance efficiency, and overall cost-effectiveness of the conveyor system. Utility Model Content

[0005] To address the aforementioned technical problems, this utility model provides a card for assembling automotive transmission chains, which solves the problems of existing cards being bulky, inconvenient to insert, and having low assembly efficiency.

[0006] To achieve the above objectives, this utility model provides the following technical solution: comprising a chain plate and a card.

[0007] The left and right sides of the chain plate are provided with multiple coaxially arranged pin holes, and the two pin holes at the left head end and the right tail end are connected to a limiting hole perpendicular to them.

[0008] To facilitate quick card insertion and achieve limiting and fixing, thereby improving stability and preventing loosening, the card has a flat structure consisting of a front plane, a rear plane, and side edges, with the front and rear planes perpendicular to the pin through hole.

[0009] A forward-protruding limiting protrusion is fixedly connected to the middle of the front plane. When the card is inserted from the limiting hole into the pin hole, the limiting protrusion is engaged in the pin hole, and the upper wide part of the card is limited within the limiting hole.

[0010] To facilitate card removal, the side edge has a tapered structure that is wider at the top and narrower at the bottom, with an upwardly recessed removal groove at the narrower lower end.

[0011] To improve the ease of card insertion, the limiting protrusion includes a limiting surface and an inclined surface, wherein:

[0012] The limiting surface extends forward from the front plane;

[0013] The lower end of the inclined plane intersects with the front plane, and the upper end intersects with the limiting surface, forming a guiding fit structure.

[0014] To improve the positioning stability of the limiting protrusion and the pin through hole, the limiting surface is an arc surface, and the arc surface and the pin through hole are set at the same center.

[0015] To facilitate the insertion of the tool and the application of stable force, the extraction slot has a V-shaped structure that is wider at the bottom and narrower at the top, and the symmetry line of the extraction slot is collinear with the symmetry line of the limiting surface, which facilitates the card removal operation.

[0016] To enhance the card's strength, the card is made of stainless steel.

[0017] To improve the limiting performance and reduce wear between the card and the pin, the rear surface of the card is provided with grooves corresponding to the front and rear of the limiting protrusion, and the depth of the grooves is equal to the protrusion height of the limiting protrusion.

[0018] Compared with the prior art, the beneficial effects of this utility model are:

[0019] 1. Compact structure and concealed installation enhance aesthetics; the overall size of the card is smaller than existing cards, saving material costs while making it easy to hide in the "T-shaped assembly channel" of the chain plate. After installation, there is no exposed external structure, making the chain surface flat and beautiful.

[0020] 2. The bevel makes it easy to insert the card, and after installation, the card is fixed by the cooperation of the limiting protrusion and the pin through hole, which improves stability and makes it less prone to loosening.

[0021] 3. Made of stainless steel, it has higher strength.

[0022] 4. One side of the card has a raised dot, and the other side has a groove. The groove can cooperate with the pin, and the raised dot can hold the chain plate, improving the limiting performance after insertion. This can reduce the wear of the card and the pin and improve the stability after installation.

[0023] 5. The V-shaped removal slot improves disassembly efficiency and significantly reduces downtime for maintenance. Attached Figure Description

[0024] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0025] Figure 1 This is a first perspective view of the overall structure of the card in this utility model.

[0026] Figure 2 This is a second perspective view of the overall structure of the card in this utility model.

[0027] Figure 3 This is a bottom view of the chain plate after the card is inserted into the limiting hole in this utility model.

[0028] Figure 4 yes Figure 3 Enlarged schematic diagram of part A in the diagram.

[0029] Figure 5 This is a perspective view of the chain plate after the card is inserted into the limiting hole in this utility model.

[0030] Figure 6 This is a schematic diagram illustrating the limiting of the pin used for connecting the existing card insertion in this utility model.

[0031] In the diagram: 1-Chain plate, 2-Card, 201-Front plane, 202-Rear plane, 203-Side edge, 3-Pin through hole, 4-Limiting hole, 5-Limiting protrusion, 501-Limiting surface, 502-Sloping surface, 6-Removal groove, 7-Groove, 8-Existing card. Detailed Implementation

[0032] The present invention will now be described in further detail with reference to the accompanying drawings. The drawings are simplified schematic diagrams, illustrating only the basic structure of the present invention, and therefore only show the components relevant to the present invention.

[0033] Reference Figure 1-6 As shown, this utility model includes a chain plate 1 and a card 2. Multiple coaxially arranged pin holes 3 are distributed along the length of the left and right sides of the chain plate 1, used to connect multiple chain plates to form a chain belt. Two pin holes 3 at the left start and right end are respectively connected to perpendicular limiting holes 4, forming a "T-shaped assembly channel." The card 2 has a flat structure, consisting of a front plane 201, a rear plane 202, and side edges 203, with a thickness of 1.5-2.5mm. Its overall volume is smaller than the existing card 8, saving materials and facilitating concealed installation. When the card 2 is inserted into the pin hole 3 through the limiting hole 4, the front plane 201 and rear plane 202 are perpendicular to the pin hole 3, limiting the pin after insertion and preventing movement.

[0034] A forward-protruding limiting protrusion 5 is fixedly connected to the middle of the front plane 201.

[0035] When card 2 is inserted from the limiting hole 4 into the pin through hole 3, the limiting protrusion 5 is engaged in the pin through hole 3, and the upper wide part of card 2 is limited within the limiting hole 4, thus hiding card 2; the hidden layout after insertion is not visible from the outside, which is very aesthetically pleasing.

[0036] The side edge 203 is a tapered slope that is wider at the top and narrower at the bottom. The narrow part at the bottom is provided with an upwardly recessed extraction groove 6. In order to facilitate tool insertion and disassembly, the extraction groove 6 has a V-shaped structure that is wider at the bottom and narrower at the top. In order to make it easier for the limiting protrusion 5 to be forcefully removed through the limiting hole 4, the symmetry line of the extraction groove 6 is collinear with the symmetry line of the limiting surface 5. When the tool is inserted into the extraction groove 6 and force is applied, the contact surface between the limiting surface 5 and the pin through hole 3 can receive the maximum applied force, making removal easier.

[0037] The rear plane 202 is provided with grooves 7 corresponding to the front and rear of the limiting protrusion 5. The depth of the grooves 7 is equal to the protrusion height of the limiting protrusion, so that the card is subjected to balanced force at the front and rear. A protrusion is provided on one side and a groove is provided on the other side. The groove can cooperate with the pin, and the protrusion can hold the chain plate, improving the limiting performance after insertion. In this way, the wear of the card and the pin can be reduced, and the stability after installation can be improved.

[0038] The limiting protrusion 5 includes a limiting surface 501 and an inclined surface 502, wherein: the limiting surface 501 extends forward from the front plane 201 to form a protruding contact surface that cooperates with the pin through hole 3 for limiting;

[0039] The lower end of the inclined surface 502 intersects with the front plane 201, and the upper end intersects with the limiting surface 501, forming a guide fit structure. When the card 2 is inserted through the limiting hole 4, the inclined surface 502 contacts the front wall of the limiting hole 4, making it easier to deform the chain plate and insert it into the inside of the pin through hole 3. It is easy to insert and has high stability after installation, and is not easy to loosen.

[0040] The limiting surface 501 is an arc surface, and the arc surface is set with the same center as the pin through hole 3, and the radius matches the inner diameter of the pin through hole to ensure accurate alignment when engaged.

[0041] The card 2 is made of stainless steel. Although it is small in size, it has high overall strength and even higher limiting strength, and low production cost. Its corrosion resistance is better than that of existing plastic cards, which improves its service life.

[0042] Detailed operating procedures:

[0043] Pass the pin through the pin hole 3 of the adjacent chain plate 1 to complete the initial connection of the chain. Hold the card 2 and align the front surface 201 with the limiting hole 4, applying force to insert the card 2 vertically along the limiting hole 4. During insertion, the inclined surface 502 and the limiting hole 4 are interference-fitted. As the card 2 is inserted, the pressure between the inclined surface 502 and the limiting hole 4 increases, and the deformation of the chain plate 1 also increases until the inclined surface 502 completely passes through the limiting hole 4. At this point, the limiting surface 501 enters the pin hole 3 and engages with the inner wall to limit and fix it. The upper wide part of the card 2 completely enters the limiting hole 4, that is, the limiting protrusion 5 is engaged in the pin hole 3, completing the limiting.

[0044] During the disassembly process, use needle-nose pliers (or a similar tool) to open the jaws. Insert the lower jaw of the needle-nose pliers into the extraction slot 6 below the pin hole 3, while the upper jaw grips the upper edge of the chain plate 1. Slowly engage the needle-nose pliers, using leverage to pull the card 2 upwards. Simultaneously, the chain plate 1 deforms slightly due to its own elasticity, causing the limiting protrusion 5 to disengage from the pin hole 3, ultimately removing the card 2 completely.

[0045] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the 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 this utility model should be included within the protection scope of this utility model.

Claims

1. A card for assembling an automotive transmission chain, comprising a chain plate (1) and a card (2), characterized in that, The chain plate (1) has multiple coaxially arranged pin holes (3) on its left and right sides. The two pin holes (3) at the left head end and the right tail end are connected to a limiting hole (4) perpendicular to them. The card (2) has a flat structure and consists of a front plane (201), a rear plane (202) and a side edge (203). The front plane (201) and the rear plane (202) are perpendicular to the pin hole (3). A forward-protruding limiting protrusion (5) is fixedly connected to the middle of the front plane (201). When the card (2) is inserted from the limiting hole (4) into the pin through hole (3), the limiting protrusion (5) is inserted into the pin through hole (3), and the upper wide part of the card (2) is limited in the limiting hole (4). The side edge (203) has a tapered structure that is wider at the top and narrower at the bottom, and the narrow part at the bottom is provided with an upwardly recessed extraction groove (6).

2. The card for assembling an automotive transmission chain according to claim 1, characterized in that, The limiting protrusion (5) includes a limiting surface (501) and an inclined surface (502), wherein: The limiting surface (501) extends forward from the front plane (201); The lower end of the inclined plane (502) intersects with the front plane (201), and the upper end intersects with the limiting surface (501), forming a guide fit structure.

3. A card for assembling an automotive transmission chain according to claim 2, characterized in that, The limiting surface (501) is an arc surface, and the arc surface is set with the same center as the pin through hole (3).

4. A card for assembling an automotive transmission chain according to claim 1, characterized in that, The extraction slot (6) is a V-shaped structure that is wider at the bottom and narrower at the top, and the symmetry line of the extraction slot (6) is collinear with the symmetry line of the limiting surface (501), which facilitates the disassembly operation of the card (2).

5. A card for assembling an automotive transmission chain according to claim 1, characterized in that, The card (2) is made of stainless steel.

6. A card for assembling an automotive transmission chain according to claim 1, characterized in that, The rear plane (202) of the card (2) is provided with a groove (7) corresponding to the front and rear of the limiting protrusion (5), and the depth of the groove (7) is equal to the protrusion height of the limiting protrusion.

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