Length-adjustable automobile shock absorber

Abstract

The utility model discloses an automobile shock absorber with adjustable length, which relates to the technical field of shock absorbers and comprises a piston cylinder, a piston rod is inserted into the top of the piston cylinder, an upper base is fixed at one end of the piston rod far away from the piston cylinder, a lower base is arranged at the bottom of the piston cylinder, and an extension seat is arranged below the lower base. An external thread column is fixed to the top of the extension seat, an internal thread groove is formed in the bottom of the lower base, the internal thread groove in the bottom of the lower base is connected with the external thread column at the top of the extension seat, and when the extension seat rotates, the external thread column can be driven to rotate together, so that the distance between the lower base and the extension seat is adjustable; and after adjustment is completed, the effect of limiting the adjusted distance can be achieved through threaded connection, when the installation length of the shock absorber needs to be adjusted, the good fine adjustment effect is achieved, and use universality is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of shock absorbers, in particular to a length-adjustable automobile shock absorber. Background Art

[0002] The shock absorber of the car is mainly composed of a piston rod, a piston cylinder, a spring and a pin seat. Usually, the longest dimension of the shock absorber after stretching and the shortest dimension after retracting are fixed. However, in the following cases, the length of the shock absorber may need to be adjusted to meet the installation requirements:

[0003] Suspension Adjustment: When fine-tuning the vehicle's suspension system is required, it may be necessary to change the length of the shock absorbers to accommodate different suspension settings;

[0004] Ride height adjustment: If the vehicle's ride height needs to be adjusted, such as raising or lowering the chassis, the length of the shock absorber also needs to be adjusted accordingly. This can ensure that the suspension system works properly at the new ride height and avoid excessive compression or stretching of the suspension system.

[0005] Fitting to different vehicle models or accessories: In some cases, it may be necessary to transfer the shock absorber from one vehicle model to another, or to install a shock absorber that is different from the original accessory. In these cases, the length of the shock absorber may need to be adjusted to ensure it fits correctly and is compatible with the vehicle's suspension system.

[0006] However, traditional shock absorbers can only adjust the shock absorption amplitude, but cannot adjust the length between the pin seats at both ends, which brings inconvenience to installation when the length needs to be adjusted. Utility Model Content

[0007] The main purpose of the utility model is to provide a length-adjustable automobile shock absorber, which can effectively solve the problems in the background technology.

[0008] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0009] A length-adjustable automobile shock absorber comprises a piston cylinder, a piston rod is inserted into the top of the piston cylinder, an upper base is fixed to the end of the piston rod away from the piston cylinder, a lower base is arranged at the bottom of the piston cylinder, an extension seat is arranged below the lower base, an external thread column is fixed to the top of the extension seat, an internal thread groove is drilled at the bottom of the lower base, four corners of the lower base located outside the internal thread groove are drilled with through holes, bolts are inserted through the inside of the through holes, nuts are threadedly connected to the outer walls of the bolts, a connecting cylinder is arranged on the outer wall of the extension seat, a spring is sleeved on the outer wall between the piston cylinder and the piston rod, the top of the spring is in contact with the bottom of the upper base, and the bottom of the spring is in contact with the top of the lower base.

[0010] Preferably, one end of the external thread column away from the extension seat is respectively inserted into the interior of the internal thread groove and threadedly connected thereto.

[0011] Preferably, the number of the connecting cylinders is the same as the number of the bolts, the positions of the connecting cylinders match the positions of the bolts, and one end of the bolts passing through the through holes is respectively connected to the connecting cylinders.

[0012] Preferably, the nuts are respectively located at the bottom of the connecting cylinders.

[0013] Preferably, the connecting tube and the extension seat are connected by welding, and the welding method is full welding.

[0014] Preferably, a pin seat is fixed to the ends of the extension seat and the upper base that are away from each other.

[0015] Compared with the prior art, the utility model has the following beneficial effects:

[0016] 1. The internal thread groove at the bottom of the lower base is connected to the external thread column at the top of the extension seat. When the extension seat rotates, the external thread column can be driven to rotate together, so that the distance between the lower base and the extension seat can be adjusted. After the adjustment is completed, the threaded connection can be used to limit the adjusted distance. When the installation length of the shock absorber needs to be adjusted, it has a good fine-tuning effect and is widely used.

[0017] 2. After the bolt passes through the hole, mark the position of the side wall of the extension seat, and weld the connecting tube at the marked position, so that the connecting tube and the extension seat can form a whole after the fine-tuning is completed, and the bolt passes through the outer wall of one end of the connecting tube and is threadedly connected to the nut to increase the stability of the connection between the lower base and the extension seat, so that the fine-tuning distance is stable and there will be no problem of distance change due to the shaking of the vehicle. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the structure of the length-adjustable automobile shock absorber of the utility model;

[0019] Figure 2 It is a schematic diagram of the separation structure of the nut and bolt of the length-adjustable automobile shock absorber of the utility model;

[0020] Figure 3 This is a structural schematic diagram of a connecting tube and an externally threaded column of a length-adjustable automobile shock absorber of the utility model;

[0021] Figure 4 The utility model is a schematic diagram of the separation structure of the bolt and the perforation of the length-adjustable automobile shock absorber.

[0022] In the figure: 1. piston cylinder; 2. piston rod; 3. lower base; 4. upper base; 5. extension seat; 6. pin seat; 7. spring; 8. external thread column; 9. internal thread groove; 10. connecting tube; 11. nut; 12. through hole; 13. bolt. DETAILED DESCRIPTION

[0023] 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.

[0024] like Figure 1-4 As shown, a length-adjustable automobile shock absorber comprises a piston cylinder 1, a piston rod 2 is inserted into the top of the piston cylinder 1, an upper base 4 is fixed to the end of the piston rod 2 away from the piston cylinder 1, a lower base 3 is arranged at the bottom of the piston cylinder 1, an extension seat 5 is arranged below the lower base 3, an external thread column 8 is fixed to the top of the extension seat 5, an internal thread groove 9 is drilled at the bottom of the lower base 3, four corners of the lower base 3 located outside the internal thread groove 9 are drilled with through holes 12, bolts 13 are inserted through the inside of the through holes 12, nuts 11 are threadedly connected to the outer walls of the bolts 13, connecting cylinders 10 are arranged on the outer walls of the extension seats 5, and a spring 7 is sleeved on the outer wall between the piston cylinder 1 and the piston rod 2, the top of the spring 7 is in contact with the bottom of the upper base 4, and the bottom of the spring 7 is in contact with the top of the lower base 3.

[0025] Specifically, one end of the external thread column 8 away from the extension seat 5 is respectively inserted into the inner thread groove 9 and threadedly connected therewith.

[0026] Specifically, the number of connecting tubes 10 is the same as the number of bolts 13, the positions of the connecting tubes 10 match the positions of the bolts 13, one end of the bolts 13 passes through the through holes 12 and is respectively connected to the connecting tubes 10, and the nuts 11 are respectively located at the bottom of the connecting tubes 10, so that a second connection relationship is formed between the lower base 3 and the extension seat 5.

[0027] Specifically, the connection tube 10 and the extension seat 5 are connected by welding, and the welding method is full welding. The position of the connection tube 10 on the outer wall of the extension seat 5 can be adjusted according to the position of the rear bolt 13 after fine-tuning.

[0028] Specifically, a pin seat 6 is fixed to the ends of the extension seat 5 and the upper base 4 that are away from each other.

[0029] Working principle: the internal thread groove 9 at the bottom of the lower base 3 is connected to the external thread column 8 at the top of the extension seat 5. When the extension seat 5 rotates, the external thread column 8 can be driven to rotate together, so that the distance between the lower base 3 and the extension seat 5 is adjustable. After the adjustment is completed, the threaded connection can be used to limit the adjusted distance. When the installation length of the shock absorber needs to be adjusted, it has a good fine-tuning effect and is widely used. After the bolt 13 passes through the through hole 12, it is marked at the position of the side wall of the extension seat 5, and the connecting tube 10 is welded at the marked position, so that the connecting tube 10 and the extension seat 5 can form a whole after the fine-tuning is completed, and the bolt 13 passes through the outer wall of one end of the connecting tube 10 and is threadedly connected to the nut 11, which increases the stability of the connection between the lower base 3 and the extension seat 5, so that the fine-tuning distance is stable and there will be no problem of distance change due to the shaking of the vehicle.

[0030] 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.

[0031] 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 length-adjustable automobile shock absorber, comprising a piston cylinder (1), characterized in that: A piston rod (2) is inserted into the top of the piston cylinder (1), and an upper base (4) is fixed to one end of the piston rod (2) away from the piston cylinder (1). A lower base (3) is provided at the bottom of the piston cylinder (1), and an extension seat (5) is provided below the lower base (3). An external thread column (8) is fixed to the top of the extension seat (5). An internal thread groove (9) is bored at the bottom of the lower base (3). Four corners of the lower base (3) located outside the internal thread groove (9) are bored with through holes (12), and bolts (13) are inserted through the inside of the through holes (12). Nuts (11) are threadedly connected to the outer walls of the bolts (13). A connecting cylinder (10) is provided on the outer wall of the extension seat (5). A spring (7) is sleeved on the outer wall between the piston cylinder (1) and the piston rod (2), and the top of the spring (7) contacts the bottom of the upper base (4), and the bottom of the spring (7) contacts the top of the lower base (3).

2. The length-adjustable automobile shock absorber according to claim 1, characterized in that: One end of the external thread column (8) away from the extension seat (5) is respectively inserted into the interior of the external thread column (8) and threadedly connected thereto.

3. The length-adjustable automobile shock absorber according to claim 1, characterized in that: The number of the connecting cylinders (10) is the same as the number of the bolts (13); the positions of the connecting cylinders (10) match the positions of the bolts (13); and one end of the bolts (13) passing through the through holes (12) respectively penetrates and communicates with the connecting cylinders (10).

4. The length-adjustable automobile shock absorber according to claim 1, characterized in that: The nuts (11) are respectively located at the bottom of the connecting cylinders (10).

5. The length-adjustable automobile shock absorber according to claim 1, characterized in that: The connecting tube (10) and the extension seat (5) are connected by welding, and the welding method is full welding.

6. The length-adjustable automobile shock absorber according to claim 1, characterized in that: A pin seat (6) is fixed to the ends of the extension seat (5) and the upper base (4) that are away from each other.

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