Balance shaft bushing of motorcycle

Abstract

The utility model relates to the technical field of motorcycle balance shaft bushings, in particular to a motorcycle balance shaft bushing. According to the technical scheme, the balance shaft bushing of the motorcycle comprises a shaft bushing assembly, and the shaft bushing assembly comprises a shaft bushing body, a balance shaft insertion hole, an eccentric heavy block, a locking thread and a threaded connector movable groove; the two ends of the balance shaft are sleeved with the shaft bush assemblies, the shaft bush assemblies are locked through the nuts to achieve connection between the shaft bush assemblies and the balance shaft, and the rotation stability of the balance shaft is improved through centrifugal force which is provided by the eccentric heavy block when the eccentric heavy block rotates and weakens vibration.

Description

Technical Field

[0001] The utility model belongs to the technical field of motorcycle balance shaft bushings, and in particular relates to a motorcycle balance shaft bushing. Background Art

[0002] In the working cycle of the engine, the movement speed of the piston is very fast and very uneven. At the upper and lower dead centers, the speed of the piston is zero, and the speed reaches the highest at the position between the upper and lower dead centers. Since the piston makes repeated high-speed linear motion in the cylinder, it is inevitable that a large inertial force will be generated on the piston, piston pin and connecting rod. The counterweight configured on the connecting rod can effectively balance these inertial forces. However, only a part of the moving mass of the counterweight on the connecting rod participates in the linear motion, and the other part participates in the rotation. Except for the upper and lower dead centers, the various inertial forces cannot be completely balanced, causing the engine to vibrate. The method commonly used in motorcycle engines is to add a balance shaft to solve this problem. Simply put, the balance shaft is actually a shaft equipped with an eccentric weight and rotates synchronously with the crankshaft. The reverse vibration force generated by the eccentric weight is used to make the engine achieve a good balance effect and reduce engine vibration.

[0003] However, the balance shaft has insufficient rotational stability at both ends during rotation, so vibration still occurs when the balance shaft stabilizes the engine.

[0004] Therefore, in view of the above-mentioned existing motorcycle balance shaft, since the rotation stability of its two end heads is insufficient during rotation, resulting in the problem that the balance shaft still experiences vibration when stabilizing the engine, a motorcycle balance shaft bushing can be designed. Utility Model Content

[0005] In order to overcome the problem that the existing motorcycle balance shaft has insufficient rotation stability at both ends during rotation, the balance shaft still has vibration effects when stabilizing the engine.

[0006] The technical solution of the utility model is: a motorcycle balance shaft bushing, comprising a bushing assembly, which comprises a bushing body, a balance shaft insertion hole, an eccentric weight, a locking thread, and a threaded interface movable groove.

[0007] Preferably, the connection between the bushing assembly and the balance shaft is achieved by sleeved onto the two end heads of the balance shaft and locking the bushing assembly with a nut. The rotational stability of the balance shaft is improved by utilizing the eccentric weight to provide centrifugal force to reduce vibration when the balance shaft rotates, thereby solving the problem of the existing motorcycle balance shaft having insufficient rotational stability at both end heads during rotation, resulting in the balance shaft still being affected by vibration when stabilizing the engine.

[0008] Preferably, a balance shaft insertion hole is provided inside the shaft bushing body; eccentric weights are evenly distributed around the outer side of the shaft bushing body, and there are six eccentric weights, which are integrally formed with the shaft bushing body.

[0009] Preferably, the outer wall of the shaft bushing body is provided with a locking thread, and the locking thread is arranged above the eccentric weight.

[0010] Preferably, a threaded interface movable groove is provided above the locking thread, and the threaded interface movable groove is integrally formed with the outer wall of the shaft bushing body.

[0011] Preferably, the shaft bushing body is press-fitted on both ends of the motorcycle balance shaft to play a role in fixing and driving the rotation, thereby improving the stability of the motorcycle balance shaft during rotation.

[0012] Preferably, the eccentric weight is used to improve the stability of the bushing body when it rotates together with the balance shaft; the bushing assembly is pressed and locked as a whole on both ends of the motorcycle balance shaft by means of locking threads and nuts.

[0013] Beneficial effects of the utility model:

[0014] 1. Existing motorcycle balance shafts have insufficient rotational stability at both ends during rotation, resulting in vibration even when the balance shaft is stabilizing the engine. The present invention relates to a shaft bushing assembly that is sleeved onto both ends of the balance shaft and locked with a nut to achieve connection between the shaft bushing assembly and the balance shaft. The eccentric weight provides centrifugal force to reduce vibration during rotation, thereby improving the rotational stability of the balance shaft. This solves the problem of existing motorcycle balance shafts having insufficient rotational stability at both ends during rotation, resulting in vibration even when the balance shaft is stabilizing the engine.

[0015] 2. The threaded interface movable groove is provided to provide a space structure for the external nut to advance and retreat when connected with the locking thread, thereby facilitating the locking and disassembly of the shaft bushing body. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 Shown is a schematic diagram of the overall three-dimensional structure of a motorcycle balance shaft bushing of the utility model;

[0017] Figure 2 Shown is a schematic diagram of the overall side view of a motorcycle balance shaft bushing of the present invention;

[0018] Figure 3 Shown is a schematic diagram of the overall top plan structure of a motorcycle balance shaft bushing of the present invention.

[0019] The markings in the accompanying drawings are: 1. shaft bushing assembly; 101. shaft bushing body; 102. balancing shaft insertion hole; 103. eccentric weight; 104. locking thread; 105. threaded interface movable groove. DETAILED DESCRIPTION

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

[0021] See also Figure 1-3 The utility model provides an embodiment: a motorcycle balance shaft bushing, including a shaft bushing assembly 1, the shaft bushing assembly 1 includes a shaft bushing body 101, a balance shaft insertion hole 102, an eccentric weight 103, a locking thread 104, and a threaded interface movable groove 105.

[0022] See also Figure 2 In this embodiment, a balancing shaft insertion hole 102 is provided inside the shaft bushing body 101; eccentric weights 103 are evenly distributed around the outer side of the shaft bushing body 101, and there are six eccentric weights 103, and the eccentric weights 103 are integrally formed with the shaft bushing body 101; a locking thread 104 is provided on the outer wall of the shaft bushing body 101, and the locking thread 104 is provided above the eccentric weight 103; a threaded interface movable groove 105 is provided above the locking thread 104, and the threaded interface movable groove 105 is integrally formed with the outer wall of the shaft bushing body 101; the shaft bushing body 101 is press-fitted on both ends of the motorcycle balancing shaft to fix and drive the rotation, thereby improving the stability of the motorcycle balancing shaft during rotation; the eccentric weights 103 are used to improve the stability of the shaft bushing body 101 when it rotates together with the balancing shaft; the shaft bushing assembly 1 is press-fitted and locked on both ends of the motorcycle balancing shaft by relying on the locking thread 104 and the nut.

[0023] During operation, the bushing assembly 1 is sleeved onto both ends of the balancing shaft and is locked with a nut to achieve connection between the bushing assembly and the balancing shaft. The eccentric weight 103 is used to provide centrifugal force to reduce vibration during rotation, thereby improving the rotational stability of the balancing shaft. This solves the problem of existing motorcycle balancing shafts that suffer from vibration even when stabilizing the engine due to insufficient rotational stability of both ends of the balancing shaft during rotation.

[0024] Next, the threaded interface movable groove 105 is used to provide a space structure for the external nut to advance and retreat when connected to the locking thread 104, thereby facilitating the locking and disassembly of the shaft bushing body 101.

[0025] Through the above steps, the bushing assembly 1 is sleeved on the two end heads of the balancing shaft, and the bushing assembly 1 is locked with a nut to realize the connection between it and the balancing shaft. The eccentric weight 103 is used to provide centrifugal force to reduce vibration when the balancing shaft rotates to improve the rotational stability of the balancing shaft, thereby avoiding the problem that the existing motorcycle balancing shaft still has the effect of vibration when stabilizing the engine because the rotational stability of the two end heads of the existing motorcycle balancing shaft is insufficient during rotation.

[0026] The embodiments of the present invention are described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Various changes can be made within the scope of knowledge possessed by those skilled in the art without departing from the purpose of the present invention.

Claims

1. A motorcycle balance shaft bushing, comprising a shaft bushing assembly (1), characterized in that: The shaft bushing assembly (1) comprises a shaft bushing body (101), a balancing shaft insertion hole (102), an eccentric weight (103), a locking thread (104), and a threaded interface movable groove (105).

2. The motorcycle balance shaft bushing according to claim 1, characterized in that: A balance shaft insertion hole (102) is provided inside the shaft bushing body (101); eccentric weights (103) are evenly distributed around the outer side of the shaft bushing body (101), and there are six eccentric weights (103), and the eccentric weights (103) and the shaft bushing body (101) are integrally formed.

3. The motorcycle balance shaft bushing according to claim 1, characterized in that: The outer wall of the shaft bushing body (101) is provided with a locking thread (104), and the locking thread (104) is arranged above the eccentric weight (103).

4. The motorcycle balance shaft bushing according to claim 3, characterized in that: A threaded interface movable groove (105) is provided above the locking thread (104), and the threaded interface movable groove (105) and the outer wall of the shaft bushing body (101) are integrally formed.

5. The motorcycle balance shaft bushing according to claim 1, characterized in that: The shaft bushing body (101) is press-fitted on both ends of the motorcycle balance shaft to play the role of fixing and driving the rotation, thereby improving the stability of the motorcycle balance shaft during rotation.

6. The motorcycle balance shaft bushing according to claim 2, characterized in that: The eccentric weight (103) is used to improve the stability of the shaft bushing body (101) when rotating together with the balance shaft; the shaft bushing assembly (1) is integrally pressed and locked on both ends of the motorcycle balance shaft by means of locking threads (104) and nuts.

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