Shock absorber with novel piston rod

Abstract

The utility model discloses a shock absorber with a novel piston rod, which relates to the technical field of shock absorbers and comprises a piston cylinder, an auxiliary piston rod is inserted into the top of the piston cylinder in a sliding manner, a main piston rod is arranged above the auxiliary piston rod, a main inserting column is fixed at the bottom of the main piston rod, and a plurality of splines are arranged on the outer wall of the main inserting column at equal intervals. A plurality of auxiliary insertion columns are fixed to the bottom, located on the outer side of the main insertion column, of the main plug rod at equal intervals, two screw holes are formed in the outer wall, located between the adjacent splines, of each main insertion column, and when the damaged main plug rod needs to be replaced, the tops of the auxiliary plug rods are lifted out of the piston cylinder, and the positions of the containing grooves are exposed; when the bolt is detached, the bolt in the containing groove is detached, then the main inserting column at the bottom of the main plug rod can be pulled out of the main column groove, the spline is pulled out of the key groove, the auxiliary inserting column is pulled out of the auxiliary column groove, the detaching operation of the connecting position of the main plug rod and the auxiliary plug rod can be completed simply and rapidly, and the replacement cost is greatly reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of shock absorbers, in particular to a shock absorber with a novel piston rod. Background Art

[0002] The piston shock absorber is mainly composed of a piston rod, a piston cylinder and a spring. The piston rod slides on the piston cylinder and is shock-absorbing and buffered by the spring. It is an indispensable component of the vehicle suspension system.

[0003] Since many piston shock absorbers are installed in an exposed manner, during long-term driving of the vehicle, the tires will hit a large amount of gravel on the road and cause splashing. The piston rod will be impacted by the splashing gravel for a long time, which will cause the following problems:

[0004] 1. Wear and scratches: The impact force of the gravel will cause wear on the outer wall of the piston rod and may even scratch its surface. Such wear and scratches will destroy the smoothness of the piston rod, reduce its working efficiency, and may even lead to a decrease in sealing performance and cause oil leakage and other problems.

[0005] 2. Pits and deformation: Continuous gravel impact may cause pits or deformation on the outer wall of the piston rod. This deformation will change the shape and size of the piston rod, thereby affecting its fit with seals or other components, and further affecting the normal operation of the shock absorber.

[0006] 3. Cracks and fractures: If the impact of the gravel is strong enough, it may even cause cracks on the outer wall of the piston rod. In severe cases, it may even break, which will have a serious impact on the performance of the shock absorber and may even cause safety problems for the vehicle.

[0007] 4. Accelerated aging: The gravel may contain some corrosive substances. Long-term impact on the outer wall of the piston rod will accelerate its aging process and shorten its service life.

[0008] When the above situation occurs, the shock absorber needs to be replaced for the sake of vehicle driving safety. The traditional way is to replace the shock absorber as a whole, which leads to high replacement costs. Some undamaged parts, such as the piston cylinder and spring, cannot be used any more, which is a waste. Utility Model Content

[0009] The main purpose of the utility model is to provide a shock absorber with a novel piston rod, which can effectively solve the problems in the background technology.

[0010] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0011] The utility model discloses a novel piston rod shock absorber, comprising a piston cylinder, a secondary piston rod is inserted and slidably inserted in the top of the piston cylinder, a main piston rod is arranged above the secondary piston rod, a main plug column is fixed at the bottom of the main piston rod, a plurality of splines are equidistantly arranged on the outer wall of the main plug column, a plurality of secondary plug columns are equidistantly fixed on the bottom of the main piston rod located at the outer side of the main plug column, two screw holes are drilled on the outer wall of the main plug column located between adjacent splines, a main column groove is drilled on the top of the secondary piston rod, a plurality of key grooves are equidistantly drilled on the inner wall of the secondary piston rod located at the main column groove, two through holes are drilled on the side wall of the secondary piston rod located between adjacent key grooves, a receiving groove is drilled on the outer wall of the secondary piston rod at the through hole position, a secondary column groove is drilled on the top of the secondary piston rod at the secondary plug column position, bolts are inserted in the receiving grooves, and a coupling groove is drilled on the outer side of the main piston rod and the secondary piston rod close to each other, and a sealing ring is arranged inside the coupling groove.

[0012] Preferably, the main plug posts are respectively inserted into the main column slots, and the outer diameters of the main plug posts are matched with the inner diameters of the main column slots.

[0013] Preferably, the splines are respectively inserted into the inside of the keyways, and the outer dimensions of the splines match the inner dimensions of the keyways.

[0014] Preferably, the auxiliary plug-in columns are respectively inserted into the auxiliary column slots, and the outer diameters of the auxiliary plug-in columns are respectively matched with the inner diameters of the auxiliary column slots.

[0015] Preferably, the two sealing rings are in contact with each other at their ends that are close to each other.

[0016] Preferably, the positions of the receiving groove, the through hole and the screw hole are respectively connected, one end of the screw rod of the bolt is respectively connected with the through hole, and after passing through the through hole, one end of the screw rod of the bolt is respectively inserted into the inside of the screw hole and threadedly connected thereto, and the end of the bolt away from the screw rod is received in the inside of the receiving groove.

[0017] Compared with the prior art, the utility model has the following beneficial effects:

[0018] 1. When the damaged main plug rod needs to be replaced, the top of the auxiliary plug rod is lifted out of the piston cylinder, and the position of the storage groove is exposed, and the bolts in the storage groove are removed. Then, the main plug column at the bottom of the main plug rod can be pulled out from the inside of the main column groove, the spline is pulled out from the key groove, and the auxiliary plug column is pulled out from the auxiliary column groove, and the disassembly operation of the connection between the main plug rod and the auxiliary plug rod can be completed. It is simple and quick, and the replacement cost is greatly reduced.

[0019] 2. When installing new components, insert them into the main column groove, the spline into the key groove, and the auxiliary column into the auxiliary column groove, and the bottom of the main plug rod will fit with the bottom of the piston cylinder. At the same time, the sealing rings near the ends of the main plug rod and the auxiliary plug rod and located in the joint groove will also fit together to ensure the sealing between the main plug rod and the auxiliary plug rod after fitting, and avoid dust infiltration in the gap between the main plug rod and the auxiliary plug rod during shock absorption and large rebound. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the structure of the utility model with a novel piston rod shock absorber;

[0021] Figure 2 This is a schematic diagram of the disassembled structure of the utility model with a novel piston rod shock absorber;

[0022] Figure 3 This is a schematic diagram of the separation structure of the coupling groove and the sealing ring of the novel piston rod shock absorber of the utility model;

[0023] Figure 4 This is an enlarged structural diagram of point A of the utility model with a novel piston rod shock absorber.

[0024] In the figure: 1. piston cylinder; 2. main plug rod; 3. auxiliary plug rod; 31. main column groove; 32. through hole; 33. storage groove; 34. keyway; 35. auxiliary column groove; 4. main plug column; 41. screw hole; 42. spline; 43. auxiliary plug column; 5. bolt; 6. coupling groove; 7. sealing ring. DETAILED DESCRIPTION

[0025] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0026] like Figure 1-4As shown, a novel piston rod shock absorber comprises a piston cylinder 1, a secondary plug rod 3 is inserted and slidably inserted into the top of the piston cylinder 1, a main plug rod 2 is arranged above the secondary plug rod 3, a main plug column 4 is fixed to the bottom of the main plug rod 2, a plurality of splines 42 are equidistantly arranged on the outer wall of the main plug column 4, a plurality of secondary plug columns 43 are equidistantly fixed to the bottom of the main plug rod 2 located outside the main plug column 4, two screw holes 41 are drilled on the outer wall of the main plug column 4 located between adjacent splines 42, a main column groove 31 is drilled on the top of the secondary plug rod 3, and a main column groove 31 is drilled on the top of the secondary plug rod 3. The inner wall of the rod 3 located at the main column groove 31 is equidistantly bored with a plurality of key grooves 34, the side wall of the auxiliary plug rod 3 located between adjacent key grooves 34 is bored with two through holes 32, the outer wall of the auxiliary plug rod 3 located at the position of the through holes 32 is bored with a receiving groove 33, the top of the auxiliary plug rod 3 located at the position of the auxiliary plug column 43 is bored with a secondary column groove 35, bolts 5 are inserted inside the receiving groove 33, and the outer sides of the main plug rod 2 and the auxiliary plug rod 3 close to each other are bored with a coupling groove 6, and a sealing ring 7 is provided inside the coupling groove 6.

[0027] Specifically, the main plug posts 4 are respectively inserted into the main column grooves 31, and the outer diameter dimensions of the main plug posts 4 match the inner diameter dimensions of the main column grooves 31, the splines 42 are respectively inserted into the key grooves 34, and the outer dimensions of the splines 42 match the inner dimensions of the key grooves 34, the auxiliary plug posts 43 are respectively inserted into the auxiliary column grooves 35, and the outer diameter dimensions of the auxiliary plug posts 43 match the inner diameter dimensions of the auxiliary column grooves 35, to ensure the stability and connection strength of the main plug rod 2 and the auxiliary plug rod 3 after connection.

[0028] Specifically, the ends of the two sealing rings 7 that are close to each other are in contact with each other to maintain the sealing of the contact surface between the main plug rod 2 and the auxiliary plug rod 3 .

[0029] Specifically, the positions of the receiving groove 33, the through hole 32 and the screw hole 41 are respectively connected, and one end of the screw rod of the bolt 5 is respectively connected with the through hole 32, and after passing through the through hole 32, one end of the screw rod of the bolt 5 is respectively inserted into the inside of the screw hole 41 and threadedly connected therewith, and the end of the bolt 5 away from the screw rod is received in the inside of the receiving groove 33 to prevent the protrusion of the bolt 5 from affecting the normal extension and retraction of the auxiliary plug rod 3.

[0030] Working principle: the main plug rod 2 and the auxiliary plug rod 3 of the present application are combined into a complete piston rod. In order to prevent the piston rod from exceeding its working range under extreme conditions, the entire shock absorber will adjust the damping to a larger value. Therefore, the bottom of the piston rod, that is, the auxiliary plug rod 3, is almost completely inside the piston cylinder 1. During the shock absorbing and retracting process, it is difficult for the auxiliary plug rod 3 to rise and exceed the top position of the piston cylinder 1, and the probability of it being impacted by external gravel will be greatly reduced. By utilizing this point, the damage caused by the impact of gravel on the main plug rod 2 will be much greater than the damage caused to the auxiliary plug rod 3. Therefore, when damage occurs, under the probability of hitting, only the main plug rod 2 needs to be replaced. When the damaged main plug rod 2 needs to be replaced, the top of the auxiliary plug rod 3 is raised out of the piston cylinder 1, and the position of the storage groove 33 is exposed, and the storage groove 33 is The bolts 5 in the main plug rod 2 are removed, and then the main plug column 4 at the bottom of the main plug rod 2 can be pulled out from the inside of the main column groove 31, the spline 42 is pulled out from the key groove 34, and the secondary plug column 43 is pulled out from the secondary column groove 35, so that the disassembly operation of the connection between the main plug rod 2 and the secondary plug rod 3 can be completed. It is simple and quick, and the replacement cost is greatly reduced. When the new parts are installed, the screw hole 41 is inserted into the main column groove 31, the spline 42 is inserted into the key groove 34, and the secondary plug column 43 is inserted into the secondary column groove 35, and the bottom of the main plug rod 2 will fit with the bottom of the piston cylinder 1. At the same time, the sealing ring 7 located in the coupling groove 6 near the end of the main plug rod 2 and the secondary plug rod 3 will also fit, ensuring the sealing between the main plug rod 2 and the secondary plug rod 3 after fitting, avoiding shock absorption and the dust infiltration in the gap between the main plug rod 2 and the secondary plug rod 3 during the large rebound process.

[0031] The circuits, electronic components and control modules involved are all prior art and can be fully implemented by those skilled in the art. Needless to say, the content protected by the utility model does not involve improvements to software and methods.

[0032] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A novel piston rod shock absorber, comprising a piston cylinder (1), characterized in that: A secondary plug rod (3) is inserted and slidably inserted into the top of the piston cylinder (1), a main plug rod (2) is arranged above the secondary plug rod (3), a main plug column (4) is fixed to the bottom of the main plug rod (2), a plurality of splines (42) are equidistantly arranged on the outer wall of the main plug column (4), a plurality of secondary plug columns (43) are equidistantly fixed to the bottom of the main plug rod (2) located outside the main plug column (4), two screw holes (41) are drilled on the outer wall of the main plug column (4) located between adjacent splines (42), a main column groove (31) is drilled on the top of the secondary plug rod (3), and the secondary plug rod (3) is located in the main column groove (3 1) is provided with a plurality of key grooves (34) at equal intervals on its inner wall, the auxiliary plug rod (3) is provided with two through holes (32) on its side wall located between adjacent key grooves (34), the auxiliary plug rod (3) is provided with a receiving groove (33) on its outer wall located at the through holes (32), the auxiliary plug rod (3) is provided with a secondary column groove (35) on its top located at the secondary plug column (43), a bolt (5) is inserted into the inside of the receiving groove (33), and the outer sides of the main plug rod (2) and the auxiliary plug rod (3) close to one end thereof are provided with a coupling groove (6), and a sealing ring (7) is provided inside the coupling groove (6).

2. The shock absorber with a new piston rod according to claim 1 is characterized in that: The main plug posts (4) are respectively inserted into the interior of the main post slots (31), and the outer diameters of the main plug posts (4) match the inner diameters of the main post slots (31).

3. The shock absorber with a new piston rod according to claim 1 is characterized in that: The splines (42) are respectively inserted into the interior of the keyways (34), and the outer dimensions of the splines (42) match the inner dimensions of the keyways (34).

4. The shock absorber with a novel piston rod according to claim 1 is characterized in that: The auxiliary plug-in columns (43) are respectively inserted into the interior of the auxiliary column slots (35), and the outer diameter dimensions of the auxiliary plug-in columns (43) are respectively matched with the inner diameter dimensions of the auxiliary column slots (35).

5. The shock absorber with a new piston rod according to claim 1 is characterized in that: The two sealing rings (7) are in contact with each other at their ends that are close to each other.

6. The shock absorber with a novel piston rod according to claim 1 is characterized in that: The positions of the receiving groove (33), the through hole (32) and the screw hole (41) are respectively connected, one end of the screw rod of the bolt (5) is respectively connected to the through hole (32), and one end of the screw rod of the bolt (5) is respectively inserted into the inside of the screw hole (41) after passing through the through hole (32) and is threadedly connected thereto, and the end of the bolt (5) away from the screw rod is received in the inside of the receiving groove (33).

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