A thin cylinder
The thin cylinder with a split design uses bolted connections between the cylinder body, front cover, and rear cover, solving the problem of time-consuming installation and fixing of existing thin cylinders. This enables quick replacement and structural stability, making it suitable for automated production lines and robotic equipment.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- YUEQING BOGSH PNEUMATIC CO LTD
- Filing Date
- 2025-07-09
- Publication Date
- 2026-06-09
AI Technical Summary
The installation and fixing of existing thin cylinders requires precise measurements, which leads to time-consuming replacements and affects the normal operation of the equipment.
It adopts a split design, with the cylinder body and mounting plate connected by bolts. It includes the cylinder body, front cover and rear cover. The rear cover has countersunk holes on its surface, and the mounting plate has connecting holes on its surface that are threaded to the countersunk holes, enabling quick installation and replacement.
It enables the immediate use and quick replacement of thin cylinders, ensuring structural rigidity and load capacity, and is suitable for automated production lines and robotics.
Smart Images

Figure CN224339264U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of thin cylinder technology, specifically a thin cylinder. Background Technology
[0002] Thin-walled cylinders are a very common type of mechanical equipment in the industrial field. They have advantages such as compact structure, light weight, small footprint, and ability to withstand large lateral loads. Furthermore, they can be used directly on various fixtures and special equipment without the installation of accessories. Therefore, they are widely used in printing, semiconductor, automation control, robotics and other fields.
[0003] When installing and fixing a thin cylinder, the cylinder body is connected to the mounting position. However, the existing cylinder bodies are all designed with a one-piece molding structure. When installing and fixing a thin cylinder, the mounting position needs to be accurately measured and the thin cylinder needs to be specially manufactured. After long-term use, replacing the thin cylinder will take a lot of time, thus affecting the normal operation of the equipment. Summary of the Invention
[0004] The purpose of this utility model is to provide a thin cylinder to solve the problem mentioned in the background art. In the use of thin cylinders, the installation and fixation of thin cylinders is achieved by connecting and fixing the cylinder shell to the mounting position. However, the existing cylinder shells are all designed with an integral molding structure. When installing and fixing thin cylinders, the mounting position needs to be accurately measured and the thin cylinder is specially manufactured. After long-term use, replacing thin cylinders requires a lot of time, which affects the normal operation of the equipment.
[0005] To achieve the above objectives, this utility model provides the following technical solution: a thin cylinder, comprising a cylinder body and a mounting plate, wherein the mounting plate is connected to the rear end of the cylinder body, the cylinder body includes a cylinder body, a front cover and a rear cover, the front end of the cylinder body is fixedly connected to the front cover by bolts, the rear end of the cylinder body is fixedly connected to the rear cover by bolts, the surface of the rear cover has multiple countersunk holes, the surface of the mounting plate has connecting holes at positions opposite to the countersunk holes, the bottom surface of the mounting plate is fixedly connected to a connecting cylinder at the connecting hole, and the outer wall of the connecting cylinder contacts the inner wall of the countersunk hole, the mounting plate and the rear cover are fixed by bolts passing through the connecting hole and being threaded into the countersunk hole.
[0006] Preferably, the mounting plate has fixing blocks symmetrically fixedly connected to its surface, and the fixing blocks have fixing holes on their surfaces.
[0007] Preferably, the cylinder body has a movable cavity, and a piston assembly is movably connected in the movable cavity. The front cover surface has a movable opening in the middle, and one end of the piston assembly is movably connected to the movable opening.
[0008] Preferably, the piston assembly includes a piston rod and a piston ring, one end of the piston rod is movably connected to the movable cavity, the piston ring is sleeved on the surface of the piston rod, and the outer wall of the piston ring is in contact with the inner wall of the movable cavity.
[0009] Preferably, guide grooves are provided on both sides of the outer wall of the cylinder, and air inlets are provided on the top surfaces of the front cover and the rear cover, and the two air inlets communicate with the moving cavity.
[0010] Preferably, the piston rod is threaded to a connector at the end away from the cylinder.
[0011] Preferably, a sealing ring is provided between the cylinder body and the front cover and the rear cover.
[0012] Beneficial effects
[0013] Compared with existing technologies, the beneficial effects of this utility model are as follows:
[0014] This invention adopts a split-type installation as its core, which realizes the immediate use and quick replacement of thin cylinders, while ensuring structural rigidity and load capacity. It is particularly suitable for fields with stringent requirements for equipment maintenance efficiency, such as automated production lines and robots. Attached Figure Description
[0015] Fig. 1 This is a schematic diagram of the overall structure of this utility model;
[0016] Fig. 2 This is a schematic diagram of the mating structure of the rear cover and mounting plate of this utility model;
[0017] Fig. 3 This is a schematic diagram of the internal fitting structure of the cylinder body and piston rod of this utility model.
[0018] The correspondence between the labels and component names in the attached figures is as follows:
[0019] 1. Cylinder block; 2. Rear cover; 3. Front cover; 4. Mounting plate; 5. Piston assembly; 6. Intake port; 7. Bolts;
[0020] 8. Cylinder body; 9. Sealing ring; 11. Guide groove; 12. Moving chamber; 21. Countersunk hole; 31. Moving port;
[0021] 41. Connecting hole; 42. Connecting cylinder; 43. Fixing block; 44. Fixing hole; 51. Piston rod; 52. Piston ring;
[0022] 53. Connectors. Detailed Implementation
[0023] The technical solution of this utility model will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.
[0024] In the description of this utility model, it should be noted that the terms "upper," "lower," "left," "right," "front," "rear," "inner," "outer," "vertical," and "horizontal," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.
[0025] like Figs. 1-3This is a schematic diagram of a thin-film cylinder according to a preferred embodiment of the present invention. In this embodiment, a thin-film cylinder with a compact structure and stable installation is provided. The cylinder mainly includes a cylinder body 8 and a mounting plate 4. The cylinder body 8 consists of a cylinder body 1, a front cover 2, and a rear cover 3. The front end of the cylinder body 1 is fixedly connected to the front cover 2 by multiple bolts 7. The rear end of the cylinder body 1 is fixedly connected to the rear cover 3 by multiple bolts 7. To ensure sealing, sealing rings 9 are provided at the mating surfaces of the cylinder body 1 with the front cover 2 and the rear cover 3. A cylindrical movable cavity 12 is machined inside the cylinder body 1. The front cover 2 has a movable opening 31 at its center for the piston rod to pass through. The mounting plate 4 is placed outside the rear cover 3, allowing the connecting cylinder 42 to be precisely inserted into the corresponding countersunk hole 21. The outer wall of the connecting cylinder 42 contacts the inner wall of the countersunk hole 21, serving to position and increase the connection strength. Multiple countersunk holes 21 are machined on the end of the rear cover 3 facing the mounting plate 4. The mounting plate 4 is made of metal sheet and is used to install the entire cylinder onto the equipment base. A through-hole-shaped connecting hole 41 is provided on the surface of the mounting plate 4 at a position corresponding to the countersunk holes 21 of the rear cover 3. A connecting sleeve 42 is welded or integrally formed at each connecting hole 41 on the bottom surface of the mounting plate 4 facing the cylinder body 8. The connecting sleeve 42 is a short cylindrical shape, and its outer diameter is designed to match the inner diameter of the countersunk hole 21 on the rear cover 3, forming a small interference fit. In actual use, bolts 7 are passed sequentially through the connecting holes 41 and the inner hole of the connecting sleeve 42 of the mounting plate 4, and finally screwed into the pre-set internal thread at the bottom of the countersunk hole 21 of the rear cover 3 and tightened. The tightening force of the bolts 7 achieves a rigid fixed connection between the mounting plate 4 and the rear cover 3 of the cylinder body 8. This connection method significantly improves the bending rigidity and connection reliability of the mounting plate 4, and is especially suitable for thin cylinders with high requirements for installation stability. This utility model adopts a split installation as the core, realizing the immediate use and quick replacement of thin cylinders, while ensuring structural rigidity and load capacity. It is particularly suitable for fields with stringent requirements for equipment maintenance efficiency, such as automated production lines and robots.
[0026] In this embodiment, air inlets 6 are provided on the top of the front cover 2 and the top of the rear cover 3. Both air inlets 6 are connected to the movable chamber 12 inside the cylinder 1 and are used to drive the piston to reciprocate.
[0027] In this embodiment, guide grooves 11 are machined along the axial direction on both sides of the outer wall of the cylinder body 1, which can be used for guidance during the overall installation of the cylinder or for the installation of additional sensors.
[0028] In this embodiment, the piston assembly 5 includes a piston rod 51 and a piston ring 52. The piston ring 52 is sleeved and fixed to the middle of the piston rod 51. The piston assembly 5 is installed into the movable cavity 12 of the cylinder 1, so that the outer circumferential surface of the piston ring 52 maintains a sliding sealing contact with the inner wall of the movable cavity 12. The front end of the piston rod 51 extends out of the cylinder body through the movable opening 31 of the front cover 2. This extended end of the piston rod 51 is machined with external threads for threaded connection of the connecting piece 53. The rear end of the piston rod 51 is located inside the movable cavity 12 near the rear cover 3.
[0029] In this embodiment, to provide additional mounting points, fixing blocks 43 are symmetrically welded onto the surface of the mounting plate 4. Each fixing block 43 has a fixing hole 44. The fixing holes 44 can be used to pass bolts through to further fix the mounting plate 4 to the base or to connect other accessories, enhancing the flexibility and stability of the installation.
[0030] Working principle:
[0031] When compressed air enters the rear end of the piston in the movable chamber 12 through the air inlet 6 at the top of the rear cover 3, it pushes the piston assembly 5 forward, and the piston rod 51 extends. When compressed air enters the front end of the piston in the movable chamber 12 through the air inlet 6 at the top of the front cover 2, it pushes the piston assembly 5 backward, and the piston rod 51 retracts. The piston ring 52 ensures the airtightness of the front and rear chambers of the movable chamber 12. The guide groove 11 can assist in the installation and positioning of the cylinder or the installation of sensors such as magnetic switches. The connector 53 is used to connect an external load.
[0032] The above description, in conjunction with specific embodiments, provides a further detailed explanation of the present utility model. It should not be construed that the specific implementation of the present utility model is limited to these descriptions. For those skilled in the art, several simple deductions or substitutions can be made without departing from the concept of the present utility model, and all such deductions or substitutions should be considered to fall within the scope of protection defined by the claims submitted by the present utility model.
Claims
1. A thin cylinder, comprising a cylinder body (8) and a mounting plate (4), wherein the rear end of the cylinder body (8) is connected to the mounting plate (4), characterized in that: The cylinder body (8) includes a cylinder body (1), a front cover (3) and a rear cover (2). The front end of the cylinder body (1) is fixedly connected to the front cover (3) by bolts (7), and the rear end of the cylinder body (1) is fixedly connected to the rear cover (2) by bolts (7). The surface of the rear cover (2) is provided with multiple countersunk holes (21). The surface of the mounting plate (4) is provided with connecting holes (41) at positions opposite to the countersunk holes (21). The bottom surface of the mounting plate (4) is fixedly connected to a connecting cylinder (42) at the connecting hole (41), and the outer wall of the connecting cylinder (42) is in contact with the inner wall of the countersunk hole (21). The mounting plate (4) and the rear cover (2) are fixed by bolts (7) passing through the connecting hole (41) and threadedly connected to the countersunk hole (21).
2. The thin-film cylinder according to claim 1, characterized in that: The mounting plate (4) has symmetrically fixed blocks (43) on its surface, and the fixed blocks (43) have fixing holes (44) on their surface.
3. The thin-film cylinder according to claim 1, characterized in that: The cylinder (1) has a movable cavity (12) inside, and a piston assembly (5) is movably connected inside the movable cavity (12). The front cover (3) has a movable opening (31) in the middle of its surface, and one end of the piston assembly (5) is movably connected to the movable opening (31).
4. A thin-film cylinder according to claim 3, characterized in that: The piston assembly (5) includes a piston rod (51) and a piston ring (52). One end of the piston rod (51) is movably connected to the movable port (31). The piston ring (52) is sleeved on the surface of the piston rod (51), and the outer wall of the piston ring (52) is in contact with the inner wall of the movable cavity (12).
5. A thin-film cylinder according to claim 2, characterized in that: The cylinder body (1) has guide grooves (11) on both sides of its outer wall. The top surfaces of the front cover (3) and the rear cover (2) are provided with air inlets (6), and the two air inlets (6) are connected to the movable cavity (12).
6. A thin-film cylinder according to claim 4, characterized in that: The piston rod (51) is threaded to a connector (53) at the end away from the cylinder (1).
7. A thin-film cylinder according to claim 5, characterized in that: A sealing ring (9) is provided between the cylinder body (1) and the front cover (3) and the rear cover (2).