Tensioning wheel with signal teeth

Abstract

The utility model discloses a tensioning wheel with signal teeth. The tensioning wheel comprises a belt wheel body, a bearing, a fixing piece and a signal fluted disc. And the bearing is fixed on the inner ring of the belt wheel main body. The belt wheel body comprises a spoke and a belt wheel installation part arranged on the edge of the spoke. According to the utility model, the belt wheel main body is manufactured by adopting a spinning process, so that the mounting groove matched with the signal fluted disc is formed between the spoke and the belt wheel mounting part. And the signal fluted disc is fixed in the mounting groove through a fixing piece. The belt wheel main body and the signal fluted disc are separately machined and assembled, the machining precision of the signal fluted disc can be effectively improved while the machining efficiency is improved, follow-up maintenance is facilitated, and the belt wheel has the advantages of being low in machining cost, novel in manufacturing process and high in economic benefit.

Description

Technical Field

[0001] This utility model belongs to the field of transmission belt pulley technology, specifically relating to a tensioning pulley with signal teeth. Background Technology

[0002] In the prior art, tensioners are belt tensioning devices used in transmission systems. Some tensioners are equipped with a pulley signal disc, the main function of which is to provide a signal to a speed sensor, thereby measuring the rotational speed of the tensioner.

[0003] The tensioner and pulley signal disc assemblies currently in use are mostly made into an integrated structure through casting, forming the signal disc on the pulley spokes, so that it can be used in conjunction with a speed sensor to detect the pulley speed in subsequent use.

[0004] However, products made in this way have disadvantages such as heavy weight, complex processing, and casting defects. The precision of the cast signal teeth is not high, and the production efficiency is low, the raw material cost is high, the scrap rate is high, and the ex-factory price is high, which cannot meet customer requirements. Utility Model Content

[0005] To overcome the shortcomings of existing technologies, this utility model provides a tensioning wheel with signal teeth to solve the technical problems of low processing accuracy and high cost of integrated tensioning wheels and pulley signal discs.

[0006] To achieve the above objectives, the specific technical solution of this utility model is as follows:

[0007] A tensioning pulley with signal teeth includes a pulley body, a bearing, a fixing member, and a signal toothed disc. The bearing is fixed to the inner ring of the pulley body. The pulley body includes spokes and a pulley mounting portion disposed at the edge of the spokes. A mounting groove that mates with the signal teeth is formed between the spokes and the pulley mounting portion. The signal toothed disc is fixed in the mounting groove by the fixing member.

[0008] Furthermore, the fastener is a blind rivet. Positioning holes are formed on the spokes of the pulley body. Mounting holes corresponding to the positioning holes are formed on the signal gear. The blind rivet passes through the positioning holes and mounting holes in sequence to achieve a fixed connection between the signal gear and the pulley body.

[0009] Furthermore, there are two blind rivets in total. The two blind rivets are symmetrically arranged on the signal gear plate.

[0010] Furthermore, the signal gear disk is divided into an inner ring connecting portion and an outer ring gear portion. Mounting holes are formed on the connecting portion. Multiple toothed grooves are formed on the gear ring portion. These grooves are evenly distributed circumferentially along the axis of the signal gear disk.

[0011] Furthermore, the pulley body is made of 4mm thick steel plate by spin forming.

[0012] Furthermore, the signal toothed disc is formed by stamping 3.5mm steel plate.

[0013] Compared with the prior art, the present invention has the following advantages:

[0014] This invention utilizes a spinning process to manufacture the pulley body, creating a mounting groove between the spokes and the pulley mounting section that mates with the signal gear disc. The signal gear disc is fixed within the mounting groove by fasteners. The pulley body and signal gear disc are machined and assembled separately, improving processing efficiency while effectively enhancing the machining accuracy of the signal gear disc. This also facilitates subsequent maintenance, offering advantages such as low processing cost, novel manufacturing process, and high economic benefits. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the signal toothed disc of this utility model;

[0017] Figure 3 This is a schematic diagram showing the relative positions of the pulley body and the signal toothed disc in this utility model.

[0018] Reference numerals in the attached drawings: 1. Pulley body; 1-1. Pulley spoke; 1-2. Pulley mounting part; 2. Bearing; 3. Fixing part; 4. Signal toothed disc; 4-1. Connecting part; 4-2. Toothed ring part. Detailed Implementation

[0019] In the description of this utility model, it should be understood that the terms "one end", "the other end", "outer side", "upper side", "inner side", "horizontal", "coaxial", "center", "end", "length", "outer end", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are 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.

[0020] The present invention will be further described below with reference to the accompanying drawings.

[0021] like Figure 1 and 2As shown, a tensioning pulley with signal teeth includes a pulley body 1, a bearing 2, a fixing member 3, and a signal toothed disc 4 mounted on the pulley body 1. The pulley body 1 includes spokes 1-1 and pulley mounting portions 1-2 disposed at the edges of the spokes 1-1. A mounting groove for engaging the signal teeth is formed between the spokes 1-1 and the pulley mounting portions 1-2. The signal toothed disc 4 is fixed in the mounting groove by the fixing member 3.

[0022] like Figure 3 As shown, in this embodiment, the fixing member 3 is a blind rivet. A positioning hole is provided on the spoke 1-1 of the pulley body 1. A mounting hole corresponding to the positioning hole is provided on the signal gear 4. During installation, the signal gear 4 is embedded in the pulley body 1, with the positioning hole and mounting hole aligned. The blind rivet passes through the positioning hole and mounting hole in sequence to achieve a fixed connection between the signal gear 4 and the pulley body 1.

[0023] In some embodiments, there are two blind rivets. The two blind rivets are symmetrically arranged on the signal gear plate 4 to ensure that the signal gear plate 4 is securely fixed to the pulley body 1.

[0024] like Figure 2 and 3 As shown, the signal gear disk 4 is divided into an inner ring connecting part 4-1 and an outer ring gear part 4-2. Mounting holes are formed on the connecting part 4-1. The gear ring part 4-2 has multiple toothed grooves. These grooves are evenly distributed circumferentially along the axis of the signal gear disk 4, enabling it to work with a sensor to detect the speed signal of the pulley body 1.

[0025] In this embodiment, the pulley body 1 is formed by spinning a 4mm thick steel plate. The pulley body 1 and the bearing 2 are fixed together by friction welding.

[0026] Furthermore, the signal gear 4 is formed by stamping from a 3.5mm steel plate.

[0027] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A tensioning wheel with signal teeth, characterized in that: The device includes a pulley body (1), a bearing (2), a fixing member (3), and a signal toothed disc (4); the bearing (2) is fixed to the inner ring of the pulley body (1); the pulley body (1) includes spokes (1-1) and a pulley mounting part (1-2) provided at the edge of the spokes (1-1); a mounting groove that mates with the signal tooth is formed between the spokes (1-1) and the pulley mounting part (1-2); the signal toothed disc (4) is fixed in the mounting groove by the fixing member (3).

2. A tensioning wheel with signal teeth according to claim 1, characterized in that: The fastener (3) is a blind rivet; a positioning hole is provided on the spoke (1-1) of the pulley body (1); a mounting hole corresponding to the positioning hole is provided on the signal toothed disc (4); the blind rivet passes through the positioning hole and the mounting hole in sequence to realize the fixed connection between the signal toothed disc (4) and the pulley body (1).

3. A tensioning wheel with signal teeth according to claim 2, characterized in that: There are two blind rivets; the two blind rivets are symmetrically arranged on the signal gear plate (4).

4. A tensioning wheel with signal teeth according to claim 2, characterized in that: The signal toothed disc (4) is divided into an inner ring connecting part (4-1) and an outer ring toothed ring part (4-2); the mounting hole is opened on the connecting part (4-1); multiple toothed grooves are opened on the toothed ring part (4-2); each toothed groove is evenly distributed circumferentially along the axis of the signal toothed disc (4).

5. A tensioning wheel with signal teeth according to claim 1, characterized in that: The pulley body (1) is formed by spinning 4mm steel plate.

6. A tensioning wheel with signal teeth according to claim 1, characterized in that: The signal toothed disc (4) is formed by stamping 3.5mm steel plate.

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