Motorcycle hydraulic tensioner

Abstract

The utility model belongs to the technical field of motorcycle parts, and relates to a motorcycle hydraulic tensioner. A piston (3) is movably sleeved in the shell (1) from the position of an opening end (2) located at one end, a protruding annular boss (4) is arranged at the position, close to the opening end (2), of the inner wall of the shell (1), a plurality of limiting open grooves (5) are formed in the annular boss (4), and a plurality of protruding limiting bosses (6) are arranged on the outer ring of the rear end of the piston (3). According to the motorcycle hydraulic tensioner, the structure is simple, in the transportation process of the motorcycle tensioner, it is guaranteed that the shell and the piston are reliably combined together, the problem that the shell and the piston fall off cannot occur, and normal transportation is guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model belongs to motorcycle parts technical field, more specifically, relate to a motorcycle hydraulic tensioner. BACKGROUND

[0002] In the motorcycle tensioner conveying process, it is necessary to ensure that the shell and the piston are combined together, but at this time, the shell and the piston are not fixedly connected, if the vehicle is jolted, the piston will fall off from the shell, which will cause the corresponding shell and piston not to be combined together. For the transportation of motorcycle tensioner, such problem affects the normal transportation of the tensioner.

[0003] The prior art has the name "motorcycle hydraulic tensioner", the publication (announcement) number is "CN218172503U", which provides a motorcycle hydraulic tensioner, belonging to the technical field of tensioning. It solves the problem of not sensitive pressure relief reaction. It includes an inner sleeve with an oil inlet channel, a top sleeve set outside the inner sleeve at one end, and a flexible core assembly set in the top sleeve and capable of blocking the outlet of the oil inlet channel under the action of its own elasticity, a pressure relief gap is provided between the outer peripheral wall of the inner sleeve and the inner peripheral wall of the top sleeve, the inner side of the top sleeve has a blocking part, the outer side of the inner sleeve in the top sleeve is provided with an annular clamping groove, and a clamping piece is fixed in the annular clamping groove, the clamping piece includes a plurality of arc limiting parts and a flat transition part fixedly connected between adjacent two arc limiting parts, and each arc limiting part partially extends out of the annular clamping groove. It has the advantages of sensitive pressure relief reaction, reliable structure and the like. However, the technology does not involve the technical problems and technical solutions of the present application. UTILITY MODEL CONTENTS

[0004] The utility model solves the technical problems: in view of the prior art, provide a kind of simple structure, in the process of motorcycle tensioner transportation, it is ensured that shell and piston are reliably combined together, without the problem of falling off, ensure the normal transportation of motorcycle hydraulic tensioner.

[0005] To solve the above technical problems, the technical scheme adopted by the utility model is:

[0006] The utility model is a kind of motorcycle hydraulic tensioner, piston is movably sleeved in the opening end position of shell inside from one end, and the inner wall of shell is provided with protruding annular boss near opening end position, a plurality of limiting slots are arranged on annular boss, and a plurality of protruding limiting bosses are arranged on the outer circle of the rear end of piston.

[0007] The annular boss of the shell is provided with a plurality of limiting slots along a gap.

[0008] The rear end outer circle of the piston is provided with a plurality of limiting bosses along a gap.

[0009] The limiting boss of the piston is arranged to abut against the inside of the annular boss.

[0010] The other end of the shell is provided with an oil inlet, and the inner end of the oil inlet is provided with a one-way valve.

[0011] The pre-pressing spring is arranged inside the piston and abuts against the one-way valve.

[0012] The plunger is further arranged inside the piston, the pre-pressing spring is sleeved on the plunger, and the pre-pressing spring abuts against the end of the plunger.

[0013] The one-way valve body of the one-way valve is provided with a ball and a reset spring.

[0014] The technical scheme of the utility model has the following working principle and beneficial effects:

[0015] The motorcycle hydraulic tensioner has the following structure: the shell is the basis for arranging other components of the tensioner; one end of the shell is a closed end, the closed end is provided with an oil inlet, the other end of the shell is an open end and is used for mounting the piston; the piston is movably sleeved on the open end of the shell; the inner wall of the shell is provided with an annular boss near the open end; a plurality of limiting grooves are arranged on the annular boss; and a plurality of limiting bosses are arranged on the outer circle of the rear end of the piston. When the shell and the piston are combined, the piston is sleeved on the shell from the open end, the piston is pushed into the shell, each limiting boss on the piston is aligned with a corresponding limiting groove, the piston is continuously pushed into the shell, the pre-pressing spring is pressed, each limiting boss passes through the corresponding limiting groove, the piston is rotated relative to the shell, each limiting boss is misaligned with the corresponding limiting groove, the piston is released, each limiting boss abuts against the inside of the annular boss, the limiting boss and the annular boss are combined to limit the piston and the shell, the piston cannot move axially relative to the shell, and the piston cannot fall off the shell. Therefore, the positioning requirement of the motorcycle tensioner can be met effectively during transportation of the tensioner, and the transportation reliability is ensured. When the tensioner is used on a motorcycle, the piston is rotated relative to the shell, each limiting boss is aligned with the corresponding limiting groove, each limiting boss passes through the corresponding limiting groove under the action of the pre-pressing spring, the piston and the shell are separated, the piston can move axially in the shell, the tensioner can reliably tension the motorcycle, and the tensioner can be used normally. BRIEF DESCRIPTION OF DRAWINGS

[0016] The content expressed by each drawing of the specification and the marks in the drawings are briefly described as follows:

[0017] Figure 1 This is a schematic diagram of the structure of the motorcycle hydraulic tensioner described in this utility model;

[0018] Figure 2 This is a schematic diagram of the structure of the motorcycle hydraulic tensioner described in this utility model;

[0019] Figure 3 This is a schematic diagram of the structure of the motorcycle hydraulic tensioner described in this utility model;

[0020] Figure 4 This is a schematic diagram of the structure of the motorcycle hydraulic tensioner described in this utility model;

[0021] The labels in the attached diagram are as follows: 1. Housing; 2. Open end; 3. Piston; 4. Annular boss; 5. Limiting slot; 6. Limiting boss; 7. Oil inlet; 8. Check valve; 9. Preload spring; 10. Plunger; 11. End; 12. Ball bearing; 13. Return spring. Detailed Implementation

[0022] The following description, with reference to the accompanying drawings, provides a more detailed explanation of the specific embodiments of this utility model, including the shape and structure of each component, the relative positions and connections between the parts, the functions and working principles of each part:

[0023] As attached Figure 1 -Appendix Figure 4The utility model discloses a motorcycle hydraulic tensioner, the inside of shell 1 is from the open end 2 position of one end activity suit installs piston 3, the inside wall of shell 1 is close to the position of open end 2 and sets up the annular boss 4 of protruding, sets up a plurality of limit slot 5 on annular boss 4, and the outer circle of piston 3 rear end sets up a plurality of protruding limit boss 6. The above structure, for the deficiency in the prior art, proposes the technical scheme of improvement. When setting structure, shell 1 is the basis of other components of tensioner arrangement. Shell 1 one end is closed end, and closed end sets up oil inlet, and the other end of shell 1 is open end 2, is used for installing piston 3. The inside of shell 1 is from the open end 2 position of one end activity suit installs piston 3, to ensure that shell 1 and piston 3 can be reliably combined together, the structure of shell 1 and piston 3 is improved respectively, and the inside wall of shell 1 is close to the position of open end 2 and sets up the annular boss 4 of protruding, sets up a plurality of limit slot 5 on annular boss 4, and the outer circle of piston 3 rear end sets up a plurality of protruding limit boss 6. In this way, when the combination of the shell 1 and the piston 3 of motorcycle tensioner, first from open end 2 suit installs piston 3 to the inside of shell 1, when pushing piston 3 to the inside of shell 1, every limit boss 6 on piston 3 is aligned with a limit slot 5, continues to push piston 3 to the inside of shell 1, and piston 3 extrudes pre-press spring, and every limit boss 6 passes through corresponding limit slot 5, until completely, and then rotates piston 3 relative to shell 1, so that every limit boss 6 and corresponding limit slot 5 position dislocation, then loosen piston 3, at this time, every limit boss 6 is respectively supported in the inside position of annular boss 4, and limit boss 6 and annular boss 4 cooperate to realize the limit of piston 3 and shell 1, and piston 3 will not move axially relative to shell 1, and piston 3 will not fall off from the inside of shell 1. In this way, during the transportation of the tensioner, even if the vehicle is jolted, the positioning requirements of the motorcycle tensioner can be effectively met, and the transportation reliability can be ensured. When the tensioner needs to be used to the motorcycle, first rotate piston 3 relative to shell 1, so that every limit boss 6 is aligned with corresponding limit slot 5, under the action of pre-press spring, every limit boss 6 will pass through corresponding limit slot 5, until completely, realize the separation of piston 3 and shell 1, and then piston 3 can move axially in shell 1 flexibly, and the tensioner can play a reliable tensioning role on the motorcycle, and can be used normally. The motorcycle hydraulic tensioner, simple structure, during the transportation of the motorcycle tensioner, ensure that the shell and the piston can be reliably combined together, and the two will not fall off, ensure normal transportation.

[0024] The annular boss 4 of shell 1 is provided with a plurality of limit slots 5 along a gap. The above structure, a plurality of limit slots 5 are provided along a circumference of shell 1 according to equal angles. The outer circle of piston 3 rear end is provided with a plurality of limit bosses 6 along a gap. The above structure, a plurality of limit bosses 6 are provided along a circumference of piston 3 according to equal angles. The number of limit slots 5 and limit bosses 6 is equal, and the positions of the two are one-to-one corresponding, so that the use requirements can be effectively met.

[0025] The motorcycle hydraulic tensioner's housing 1 and the piston 3 are positioned, the piston 3's limiting boss 6 is set to be able to abut against the inside position of the annular boss 4. The above structure, after the combination of the piston 3 and the housing 1, can reliably position the piston 3's position in the housing 1.

[0026] The housing 1's other end is set with the oil inlet 7, the oil inlet 7's inside end is set with the one-way valve 8. The piston 3's inside is set with the pre-press spring 9, the pre-press spring 9 abuts against the one-way valve 8. The piston 3's inside is also set with the plunger 10, the pre-press spring 9 is sleeved on the plunger 10, and the pre-press spring 9 simultaneously abuts against the plunger 10's end head 11. The one-way valve 8's one-way valve body is set with the ball 12 and the reset spring 13. The above structure, in the housing 1's inner cavity, sets the piston 3 which moves in the cavity with random oil pressure, sets the one-way valve 8 which is used to control the engine oil pressure in the position close to the oil inlet in the housing 1's inner cavity, and between the one-way valve 8 and the piston 3, there is the pre-press spring 9, the pre-press spring 9 contacts the one-way valve 8 and the piston 3 respectively through the plunger 10, so as to control the dynamic response characteristics caused by the engine timing chain system in the engine operation process, to realize the adjustable control of the engine crankshaft torsional vibration and the torque fluctuation of the cam system.

[0027] The utility model discloses a motorcycle hydraulic tensioner, structural setting, the shell 1 is the basis of other components of tensioner arrangement. The shell 1 one end is closed end, and closed end sets up oil inlet, and the other end of shell 1 is open end 2 for installing piston 3. The shell 1 inside from the open end 2 position of one end activity suit piston 3, for ensuring that the shell 1 and piston 3 reliable combination together, the structure of shell 1 and piston 3 is improved locally respectively, and the inner wall of shell 1 is close to the position of open end 2 and sets up the annular boss 4 of protruding, and a plurality of limit slot 5 are set up on the annular boss 4, and a plurality of protruding limit boss 6 are set up on the rear end outer ring of piston 3. In this way, when the shell 1 and piston 3 of motorcycle tensioner combination, first, the piston 3 is suitably installed in the shell 1 from open end 2, when the piston 3 is pushed to the shell 1, every limit boss 6 on the piston 3 is aligned with a limit slot 5, the piston 3 is continuously pushed to the shell 1, and the limit boss 6 is extruded pre-press spring, and every limit boss 6 is respectively supported in the position of the inner side of annular boss 4 through the limit slot 5 of corresponding limit, and the limit boss 6 and annular boss 4 cooperate to realize the limit of piston 3 and shell 1, and the piston 3 cannot move axially relative to the shell 1, and the piston 3 cannot fall off from the shell 1. In this way, during the transportation of tensioner, even if the vehicle is jolted, the positioning demand of motorcycle tensioner can be effectively met, and the transportation reliability is ensured. When the tensioner needs to be used to motorcycle, first, the piston 3 is rotated relative to the shell 1, so that every limit boss 6 is aligned with the limit slot 5 of corresponding limit, and under the action of pre-press spring, every limit boss 6 can pass through the limit slot 5 of corresponding limit until completely passing, so that the separation of piston 3 and shell 1 is realized, and then the piston 3 can move axially in the shell 1 flexibly, and the tensioner can play a reliable tensioning role on the motorcycle, and can be used normally.

[0028] The utility model has been described exemplarily above in connection with the drawings, and obviously, the specific implementation of the utility model is not limited by the above-mentioned mode, and various improvements adopting the method concept and technical scheme of the utility model or direct application of the concept and technical scheme of the utility model to other occasions without improvement are all within the protection scope of the utility model.

Claims

1. A hydraulic motorcycle tensioner characterized by: The shell (1) internally from the open end (2) position at one end of the movable set piston (3), the shell (1) wall near the open end (2) position is provided with a convex annular boss (4), the annular boss (4) is provided with a plurality of limiting slot (5), the piston (3) rear end outer circle is provided with a plurality of convex limiting boss (6).

2. The hydraulic motorcycle tensioner of claim 1, wherein: The annular boss (4) of the shell (1) is provided with a plurality of limiting slots (5) along a gap.

3. The hydraulic tensioner for a motorcycle according to claim 1 or 2, characterized in that: The rear end outer circle of the piston (3) is provided with a plurality of limiting bosses (6) along a gap.

4. The hydraulic motorcycle tensioner of claim 3, wherein: The limiting boss (6) of the piston (3) is arranged to abut against the inner side of the annular boss (4) when the shell (1) and the piston (3) are positioned.

5. The hydraulic tensioner for a motorcycle as set forth in claim 1 or 2, characterized in that: The other end of the shell (1) is provided with an oil inlet (7), and the inner end of the oil inlet (7) is provided with a one-way valve (8).

6. The hydraulic tensioner of a motorcycle according to claim 1 or 2, characterized in that: The piston (3) is provided with a pre-pressing spring (9) inside, and the pre-pressing spring (9) abuts against the one-way valve (8).

7. The hydraulic motorcycle tensioner of claim 6, wherein: The piston (3) is further provided with a plunger (10) inside, the pre-pressing spring (9) is sleeved on the plunger (10), and the pre-pressing spring (9) abuts against the end head (11) of the plunger (10) at the same time.

8. The hydraulic motorcycle tensioner of claim 6, wherein: The one-way valve (8) is provided with a ball (12) and a reset spring (13) in the one-way valve body.

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