Mini air cylinder
By adopting a dual piston design and guide ring in the mini cylinder, the deviation problem caused by wear and cylinder inner wall is solved, and the smooth operation and long life of the piston rod are achieved.
Patent Information
- Application Number
- CN202422175871.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-05
- Publication Date
- 2025-06-17
- Estimated Expiration
- 2034-09-05
AI Technical Summary
During the long-term reciprocating process of existing mini cylinders, wear between the piston and the inner wall of the cylinder causes the axis of the piston rod to deviate from the axis of the cylinder, causing problems such as shaking and poor operation of the piston rod.
The dual piston design is adopted to ensure proper alignment of the piston rod with the inner wall of the cylinder through the guide ring between the first piston and the second piston, and to prevent gas leakage through an O-ring.
It effectively avoids the problem of gas pressure penetration caused by piston damage, ensures the smooth operation and long life of the piston rod, and solves the problems of piston rod shaking and poor operation.
Smart Images
Figure CN222991833U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of pneumatic components, in particular to a mini cylinder. Background Art
[0002] A cylinder is a power component in mechanical equipment. It converts the pressure energy of compressed air into mechanical energy to drive a mechanism to achieve reciprocating linear motion, swinging or rotational motion. There are various types of cylinders, including cylindrical cylinders, thin cylindrical cylinders, freely mounted cylinders, double-rod cylinders, etc., and each type has its own characteristics and application ranges.
[0003] During the long-term reciprocating movement of existing mini cylinders, due to the long-term wear between the piston and the inner wall of the cylinder body, the axis of the piston rod will deviate from the axis of the cylinder body, resulting in the problems of piston rod jitter and poor operation. Therefore, the applicant has made a beneficial design and found a method to solve the above problems. The technical solution to be introduced below was generated under this background. Summary of the Invention
[0004] The purpose of the utility model is to overcome the deficiencies of the existing traditional mini cylinder design and provide a product with smooth operation.
[0005] To solve the above problems, the utility model adopts the following technical solutions.
[0006] A mini cylinder includes a cylinder body and a piston rod slidably disposed in the cylinder body. One end of the piston rod is provided with a first piston and a second piston. A guide ring is provided between the first piston and the second piston and abuts against the inner wall of the cylinder body.
[0007] Preferably, a rear cylinder head is provided at one end of the cylinder body, and a front cylinder head is provided at the other end of the cylinder body.
[0008] Preferably, the front cylinder head and the rear cylinder head are provided with air passages and are communicated with the inside of the cylinder body. An O-ring seal is provided between the front cylinder head, the rear cylinder head and the cylinder body.
[0009] Preferably, the front cylinder head is provided with a guide hole for the piston rod to pass through.
[0010] Preferably, an O-ring seal is provided between the first piston, the second piston and the inner wall of the cylinder body.
[0011] Advantageous Effects
[0012] Compared with the prior art, the advantageous effects of the utility model are as follows:
[0013] In this utility model, through the dual piston design of the first piston and the second piston, it is avoided that due to the damage of one of the pistons, the gas pressure penetrates to the other end, resulting in insufficient pressure at the input gas source end, and further causing the piston rod to be stuck and not move smoothly. The first piston and the second piston also provide a guiding function for the piston rod, and the guiding ring further provides a guiding function for the piston rod to ensure that the piston rod and the guiding hole of the front cylinder head are on the same axis line, thus overcoming the problems proposed in the background technology and making the product have the advantage of smooth operation. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 FIG. is a schematic side sectional structure diagram of a mini cylinder of this utility model;
[0015] Figure 2 For this utility model Figure 1 A partial enlarged view of part A in a mini cylinder of this utility model;
[0016] The corresponding relationship between the reference numerals in the drawings and the component names is as follows:
[0017] Reference numerals: 1, cylinder block; 2, piston rod; 3, first piston; 4, second piston; 5, guiding ring; 6, rear cylinder head; 7, front cylinder head; 8, air passage; 9, O-ring seal; 71, guiding hole. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0018] Next, the technical solutions of this utility model will be clearly and completely described in conjunction with the embodiments. Obviously, the described embodiments are part of the embodiments of this utility model, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of this utility model without creative work shall fall within the protection scope of this utility model.
[0019] In the description of this utility model, it should be understood that the orientation or positional relationship indicated by terms such as "upper", "lower", "left", "right", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing this utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.
[0020] In the embodiments of this utility model, "and / or" is only a description of the association relationship of associated objects, indicating that three relationships can exist. For example, A and / or B can represent: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " in this text generally represents an "or" relationship between the associated objects before and after.
[0021] Reference example Figure 1 、 Figure 2A mini cylinder comprises a cylinder body 1 and a piston rod 2 slidably arranged in the cylinder body 1, a first piston 3 and a second piston 4 are arranged at one end of the piston rod 2, a guide ring 5 is arranged between the first piston 3 and the second piston 4, and abuts against the inner wall of the cylinder body 1, and the double piston design of the first piston 3 and the second piston 4 can prevent the gas pressure from penetrating to the other end due to damage of one of the pistons, resulting in insufficient pressure at the input gas source end, and then causing the piston rod 2 to be stuck and move poorly, and the first piston 3 and the second piston 4 also provide a guiding function for the piston rod 2, and the guide ring 5 further provides a guiding function for the piston rod 2, ensuring that the piston rod 2 and the guide hole 71 of the front cylinder cover 7 are on the same axis, and the guide ring 5 is made of plastic;
[0022] It is worth mentioning that a rear cylinder cover 6 is provided at one end of the cylinder body 1, and a front cylinder cover 7 is provided at the other end of the cylinder body 1. The rear cylinder cover 6 cooperates with the front cylinder cover 7 and the piston rod 2 to form a sealed structure in the cylinder body 1.
[0023] It is worth mentioning that the front cylinder head 7 and the rear cylinder head 6 are provided with an air passage 8, which is connected with the cylinder body 1. An O-ring 9 is provided between the front cylinder head 7, the rear cylinder head 6 and the cylinder body 1. The air passage 8 provides air to enter the cylinder body 1 to push the piston rod 2 to perform telescopic movement. The O-ring 9 prevents gas from leaking from the connection between the front cylinder head 7, the rear cylinder head 6 and the cylinder body 1.
[0024] It is worth mentioning that the front cylinder cover 7 is provided with a guide hole 71 for the piston rod 2 to pass through. The guide hole 71 not only provides a guide for the piston rod 2, but also provides support for the piston rod 2 when the piston rod 2 is fully extended to prevent the piston rod 2 from bending.
[0025] It is worth mentioning that an O-ring 9 is provided between the first piston 3 , the second piston 4 and the inner wall of the cylinder body 1 , and the O-ring 9 prevents gas from leaking from the contacting parts of the first piston 3 , the second piston 4 and the cylinder body 1 .
[0026] The above design scheme can enable the product to achieve the advantage of smooth operation.
[0027] The above content is a further detailed description of the utility model in combination with specific implementation methods. It cannot be determined that the specific implementation of the utility model is limited to these descriptions. For ordinary technicians in the technical field to which the utility model belongs, without departing from the concept of the utility model, they can also make several simple deductions or substitutions, which should be regarded as belonging to the scope of protection determined by the claims submitted for the utility model.
Claims
1. A mini cylinder, comprising a cylinder body (1), and a piston rod (2) slidably arranged in the cylinder body (1), characterized in that: A first piston (3) and a second piston (4) are provided at one end of the piston rod (2); a guide ring (5) is provided between the first piston (3) and the second piston (4) and abuts against the inner wall of the cylinder body (1).
2. The mini cylinder according to claim 1, characterized in that: One end of the cylinder body (1) is provided with a rear cylinder cover (6), and the other end of the cylinder body (1) is provided with a front cylinder cover (7).
3. The mini cylinder according to claim 2, characterized in that: The front cylinder head (7) and the rear cylinder head (6) are provided with air passages (8) and are in communication with the cylinder body (1); an O-type sealing ring (9) is provided between the front cylinder head (7), the rear cylinder head (6) and the cylinder body (1).
4. The mini cylinder according to claim 2, characterized in that: The front cylinder cover (7) is provided with a guide hole (71) for the piston rod (2) to pass through.
5. The mini cylinder according to any one of claims 2 to 4, characterized in that: An O-type sealing ring (9) is provided between the first piston (3), the second piston (4) and the inner wall of the cylinder body (1).