JPS59126159A - Chain wheel - Google Patents

Abstract

PURPOSE:To provide a chain wheel easy to produce and free from disengagement of a chain by providing projectingly engaging teeth loosely entering respective annuli of lateral links at equal intervals on the outer periphery to form a core plate while providing projectingly sandwiching teeth loosely contacting the sides respective of longitudinal links in the same intervals as the engaging teeth on the outer periphery to form side plates. CONSTITUTION:Engaging teeth 2...loosely entering the respective annuli of lateral links 1 are provided projectingly at equal intervals on the outer periphery, while a thick core plate 4 provided on the central portion with a boss 3 is formed. Also, two thin side plates 7 provided projectingly on the outer periphery with sandwiching teeth 6... loosely contacting the sides of respective longitudinal links 5 at the same intervals as that between the engaging teeth 2 and having the intermediate portions cut away to save weight are formed such that the respective sandwiching teeth 6, 6 of two side plates 7, 7 opposed to each other are attached integrally with both sides of the core plate 4 in the intermediate position of the respective engaging teeth 2. Thus, the engaging teeth enter loosely the annuli of lateral links 1 and the sandwiching teeth 6, 6 loosely contact both sides of the longitudinal link, so that the respective longitudinal links 5 are sandwiched by the sandwiching teeth 6, 6 not to drop out. Hence a chain will not be disengaged and the core plate 4 and side plate 7 can be produced by automatic gas cutting according to a metal template with improved efficiency of production.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a chain wheel that is easy to manufacture and in which the chain 7 does not come off. On both sides of the core plate, protruding from the outer periphery at equal intervals, and side plates protruding from the outer periphery at equal intervals to the spacing between each engaging tooth, which are loosely connected to the side surfaces of each vertical link, are attached to the outer periphery of each engaging tooth. The gist is that the clamping teeth are integrally joined on both sides of the intermediate position so as to face each other.

Conventional Cheno foils are usually cast, and it is extremely difficult to accurately mold the shape of the portion that presses the shoulders of each link forming the chain 7, and furthermore, production efficiency is low. Further, since the links chained in the horizontal direction engage with the teeth of the Cheno foil, and the links chained in the vertical direction are loose from the teeth, when the Cheno wheel /I/ is installed diagonally, the chain often comes off.

The present invention eliminates such drawbacks, and its embodiment will be described in detail with reference to the drawings. A thick core plate (4) with engagement teeth (2) protruding from the outer circumference at equal intervals and a boss part (3) in the center that wedges onto a drive shaft (not shown). , and the clamping teeth (6
) Two thin side plates (7) are formed that protrude from the outer periphery at equal intervals to the spacing between the engaging teeth (2), and have a thinner wall by cutting out the center part. The core plate (4) and the side plates (7) each form a standard mold, and by using an automatic gas cutting machine guided by the mold, a uniform shape can be quickly and accurately formed. Manufacture parts. The tip of the clamping tooth (6) is slightly curved. The core plate formed in this way (4
), the two side plates t7) 17) are integrally joined at the intermediate position of each retaining tooth (2) so that the clamping teeth [6) +6+ are facing each other. This is done by tap welding the inner peripheral edge of the side plate (7) to the side surface of the core plate (4).

Since the present invention is constructed in this manner, when the chino is hung, the engaging teeth (
2) is inserted loosely, and there are clamping teeth (6+) on both sides of the vertical link (5).
+6) should be loosely connected, so as shown in Fig. 5, the engaging teeth (
Press the shoulder of the vertical link (5) with the side end surface of 2), then press the shoulder of the vertical link (5) with the side end surface of the clamping teeth (6+ +6+, and then press the shoulder of the vertical link (5) with the side end surface of the clamping teeth (6) F6j. This presses the shoulder of the horizontal link +1+ and pulls the check 7 strongly, resulting in extremely high power transmission efficiency.Also, Chen Hui/I
/ When installed diagonally, each vertical link (6) has a clamping tooth t
61 (Since it is held in place by the 6+ so that it does not fall off, the cheno will not fall off and power can be transmitted reliably.

Therefore, by using an automatic gas cutting machine, the core plate (4) and the side plates (7) can be quickly and mass-produced into uniform shapes using molds, and the side plates (7) can be welded to the core plate (4). Because they can be easily joined together, the quality is significantly improved compared to cast products produced using conventional molds, production efficiency is extremely high, and the shape of the shoulder push part of the link can be formed accurately and easily.

As described above, the present invention is an excellent invention that is easy to manufacture, strong and durable, and can be molded into any size and shape quickly and accurately.

[Brief explanation of drawings]

Fig. 1 is a partially cutaway front view showing a state in which a ceno is hung on a ceno wheel according to the present invention, and Fig. 2 is an A in Fig. 1.
-A sectional view, FIG. 3 is a front view of the core plate, FIG. 4 is a front view of the side plate, and FIG. 5 is a cutaway plane M of the main part showing the engagement state of the cheno wheel and the cheno of the present invention. (2)... Engaging teeth (4)... Core plate (6)... Clamping teeth (7)... Side plate patent applicant Masaru Yasukawa

Claims (1)

[Claims] Retaining teeth that are loosely inserted into the ring of each horizontal link that is alternately chained in the horizontal and vertical directions to form the chain 7 are provided on the outer periphery at equal intervals to form a core plate, and the side surfaces of each vertical link. One side plate is formed by protruding from the outer periphery at equal intervals to the spacing between the engaging teeth, and the pinching teeth are arranged on both sides of the core plate so that they face each other on both sides of the intermediate position of each engaging tooth. A chain wheel consisting of a side plate integrally bonded to the surface.