Novel tensioner

Abstract

The utility model provides a novel tensioner, and belongs to the technical field of timing system accessories. The tensioning device solves the problem that an existing tensioning device is complex in structure, and consequently assembly is complex. The novel tensioner comprises a tensioner shell and a plunger arranged in the tensioner shell, a tensioning spring is further arranged in the tensioner shell, a notch groove is formed in the position, corresponding to the plunger, of the tensioner shell, and a non-return device matched with the plunger is arranged in the notch groove. The utility model has the advantages of convenient assembly and good use effect.

Description

Technical Field

[0001] The utility model belongs to the technical field of timing system accessories and relates to a tensioner, in particular to a novel tensioner. Background Art

[0002] The tensioner is a commonly used retaining device in belt and chain transmission systems. Its characteristic is to keep the belt and chain with appropriate tension during the transmission process, thereby preventing the belt from slipping or the synchronous belt from jumping or stripping teeth and being dragged out. The tensioner currently used in the market has a relatively complex structure, which leads to complex assembly problems. Summary of the invention

[0003] The utility model aims to solve the above problems existing in the prior art and to provide a novel tensioner which has a compact and simple structure and is convenient for assembly and subsequent maintenance.

[0004] The purpose of the utility model can be achieved through the following technical solutions: a new type of tensioner, characterized in that it includes a tensioner housing and a plunger arranged in the tensioner housing, the tensioner housing is also provided with a tensioning spring, a notch groove is provided on the tensioner housing at a position corresponding to the plunger, and a non-return device matching the plunger is provided in the notch groove;

[0005] The check device includes a check block and a spring member connected between the check block and the tensioner housing, the spring member is located at the upper end of the check block, and the upper end of the check block is a return portion, the check block is movably connected to the tensioner housing through a rotating shaft, the bottom of the check block has check keys arranged at the front and rear ends, a plurality of check grooves are opened on the wall surface of the plunger, and the check keys are fitted and clamped in the check grooves.

[0006] In the above-mentioned novel tensioner, the longitudinal section of the check key is triangular.

[0007] In the above-mentioned novel tensioner, a baffle is provided at the end of the plunger.

[0008] Compared with the prior art, the novel tensioner compactly arranges the structures required for the coordinated movement together without requiring too many accessories, and has the advantages of easy assembly and good use effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 It is a three-dimensional diagram of the novel tensioner.

[0010] Figure 2 It is a cross-sectional view of the novel tensioner.

[0011] In the figure, 1, tensioner housing; 2, plunger; 3, tensioning spring; 4, notch groove; 5, check block; 6, spring member; 7, return part; 8, rotating shaft; 9, check key; 10, check groove; 11, baffle. DETAILED DESCRIPTION

[0012] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0013] like Figure 1 , Figure 2 As shown, the novel tensioner comprises a tensioner housing 1 and a plunger 2 arranged in the tensioner housing 1. A tensioning spring 3 is also arranged in the tensioner housing 1. A notch groove 4 is provided on the tensioner housing 1 at a position corresponding to the plunger 2. A non-return device matching the plunger 2 is arranged in the notch groove 4.

[0014] To further explain, the check device includes a check block 5 and a spring member 6 connected between the check block 5 and the tensioner housing 1, the spring member 6 is located at the upper end of the check block 5, and the upper end of the check block 5 is a return portion 7, the check block 5 is movably connected to the tensioner housing 1 through a rotating shaft 8, the bottom of the check block 5 has a check key 9 arranged at the front and rear ends, a plurality of check grooves 10 are opened on the wall surface of the plunger 2, the check key 9 is fitted into the check groove 10, when the tensioner is working, according to the tightness of the belt or sprocket, the plunger 2 performs relative movement adjustment under the action of the spring, and the check key 9 is abutted against the groove surface of the check groove 10 close to the tensioning spring 3 under the action of the spring member 6 on the return portion 7, on the one hand to prevent the piston from retreating inwardly, on the other hand to provide a more efficient tensioning effect.

[0015] Preferably, the check key 9 has a triangular longitudinal section.

[0016] Preferably, a baffle 11 is provided at the end of the plunger 2 .

[0017] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

[0018] Although the terms such as tensioner housing 1, plunger 2, tension spring 3, notch groove 4, check block 5, spring member 6, return portion 7, shaft 8, check key 9, check groove 10, baffle 11 are used more frequently in this article, the possibility of using other terms is not excluded. The use of these terms is only for more convenient description and explanation of the essence of the utility model; interpreting them as any additional restrictions is contrary to the spirit of the utility model.

Claims

1. A new type of tensioner, characterized in that: The tensioner comprises a tensioner housing (1) and a plunger (2) arranged in the tensioner housing (1); a tensioning spring (3) is also arranged in the tensioner housing (1); a notch groove (4) is provided on the tensioner housing (1) at a position corresponding to the plunger (2); a non-return device matching the plunger (2) is arranged in the notch groove (4); The non-return device comprises a non-return block (5) and a spring member (6) connected between the non-return block (5) and the tensioner housing (1); the spring member (6) is located at the upper end of the non-return block (5), and the upper end of the non-return block (5) is a return portion (7); the non-return block (5) is movably connected to the tensioner housing (1) via a rotating shaft (8); the bottom of the non-return block (5) has a non-return key (9) arranged at the front and rear ends; a plurality of non-return grooves (10) are provided on the wall surface of the plunger (2); the non-return key (9) is engaged and clamped in the non-return groove (10).

2. A novel tensioner according to claim 1, characterized in that: The check key (9) has a triangular longitudinal section.

3. A novel tensioner according to claim 1, characterized in that: A baffle (11) is provided at the end of the plunger (2).

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