Buffer type panel air cylinder

Abstract

A buffering type panel air cylinder comprises a cylinder body, a rear cylinder cover, a piston rod and a piston, the cylinder body and the rear cylinder cover form a containing space, the inner end of the piston rod extends into the containing space in a sealed mode from a through hole in the center of the top of the cylinder body, the piston is connected with the inner end of the piston rod in a fastening fit mode, and the circumference of the piston is a piston skirt edge with an annular weight reduction cavity. The bottom end of the piston skirt is further provided with a concentric axial convex part, the axial convex part is provided with a first annular flexible part which buffers the inner end of the rear cylinder cover and the bottom end of the piston skirt, and the inner end of the piston rod is further provided with a magnetic ring which is movably connected in a matched mode and a magnetic ring base and a second annular flexible part which are tightly connected in a matched mode. The upper end of the piston skirt and the lower end of the magnetic ring base are used for abutting against and limiting the magnetic ring, the magnetic ring is used for controlling on-off of an external magnetic control switch, and the upper end of the magnetic ring base is used for abutting against and limiting the second annular flexible piece. The buffering device can stably and reasonably achieve the buffering effect, the overall buffering effect is good, the space can be reasonably utilized, and installation is easy.

Description

Technical Field

[0001] The utility model relates to the technical field of panel cylinders, in particular to a buffer type panel cylinder. Background Art

[0002] At present, when a cylinder is usually used, due to the action of inertia force, the piston hits the front end wall or the rear end cover, causing the overall structure of the cylinder to be deformed and damaged. In the prior art, an external auxiliary device is usually provided in actual use to buffer and reduce the impact force, but the external buffer device often increases the overall installation position. Utility Model Content

[0003] In view of the shortcomings of the above-mentioned prior art, the purpose of the utility model is to provide a buffer type panel cylinder, which realizes the buffering effect stably and reasonably by arranging a buffer component on the piston rod, and is also easy to install.

[0004] The utility model adopts a technical solution to solve its technical problems. A buffered panel cylinder comprises a cylinder body, a rear cylinder cover, a piston rod, and a piston. The cylinder body and the rear cylinder cover form a accommodating space. The inner end of the piston rod is sealed and extends into the accommodating space through a through hole at the center of the top of the cylinder body. The piston is tightly matched with the inner end of the piston rod. The circumference of the piston is a piston skirt with an annular weight reduction cavity. The bottom end of the piston skirt is also provided with a concentric axial convex portion. The axial convex portion is provided with a first annular flexible member that buffers the inner end of the rear cylinder cover and the bottom end of the piston skirt. The inner end of the piston rod is also provided with a magnetic ring that is movably connected, and a magnetic ring seat and a second annular flexible member that are tightly connected. The upper end of the piston skirt and the lower end of the magnetic ring seat are provided for the magnetic ring to abut and limit. The magnetic ring is used to control the on and off of an external magnetically controlled switch. The upper end of the magnetic ring seat is provided for the second annular flexible member to abut and limit.

[0005] In the above scheme, by arranging the first annular flexible member and the second annular flexible member on both sides of the inner end of the piston rod, when the piston drives the piston rod to move upward to the maximum stroke, the second annular flexible member reduces the impact force of the piston rod on the cylinder body through the deformation generated, and when the piston drives the piston rod to move downward to the maximum stroke, the first annular flexible member reduces the impact force of the piston on the rear cylinder cover through the deformation generated, so that the cylinder body and the rear cylinder cover are not easy to be deformed and damaged, and by arranging the magnetic ring, the magnetic ring will change its position with the movement of the piston rod to control the on and off of the magnetic control switch, so as to achieve the purpose of accurately positioning the position of the piston rod, so the corresponding air pipe can be controlled according to the position of the piston rod. No ventilation is provided to further reduce the impact force, and an annular weight-reducing chamber is provided on the piston skirt, which can reduce the weight of the piston, thereby correspondingly reducing the movement inertia of the piston rod, and also making the service life of the first annular flexible member and the second annular flexible member longer, and the magnetic ring is position-limited by the lower end of the magnetic ring seat and the upper end of the piston skirt, the position limiting method of the magnetic ring is simple, and the operation is stable, and the first annular flexible member and the piston, as well as the second annular flexible member, the magnetic ring seat, the magnetic ring, the piston and the piston rod are all in a sleeve-fixed manner, and the installation method is also simple, the arrangement of the above structure enables the cylinder to stably and reasonably realize the buffering effect, and can reasonably utilize the space, and the installation is also simple.

[0006] Furthermore, a avoidance cavity is provided at the center of the inner wall surface of the rear cylinder cover, the avoidance cavity is used to cooperate with the axial protrusion, and the upper end surface of the avoidance cavity acts on the lower end of the second annular flexible member.

[0007] In the above scheme, during the buffering action with the rear cylinder head, the inner end bottom and the axial protrusion of the piston rod can be partially moved to the avoidance chamber, so the interaction between the piston rod and the rear cylinder head is concentrated on the second annular flexible part, which fully utilizes the buffering function of the second annular flexible part and makes the structural design more reasonable.

[0008] Furthermore, a fixing head surrounding the through hole is provided on the top of the cylinder body, an external thread for connecting a fixing nut is provided on the outer wall surface of the fixing head, an annular sealing groove is provided on the inner wall surface of the fixing head, and a sealing member is installed in the annular sealing groove.

[0009] In the above scheme, the cylinder can be quickly fixed to the panel through a fixing head with a fixing nut. The installation method is simple, and an annular sealing groove is opened on the inner wall surface of the fixing head. The position of the annular sealing groove is relatively high, which makes the seal more convenient to install while achieving dust-proof sealing. The structural design is more reasonable.

[0010] Furthermore, an elastic positioning ring and an elastic sealing ring located inside the elastic positioning ring are provided at the bottom of the sealing member. The elastic positioning ring is in the shape of a cone with a small top and a large bottom, and the bottom is in limited contact with the peripheral wall surface of the annular sealing groove. The elastic sealing ring is in the shape of a cone with a large top and a small bottom, and the bottom is in sealing contact with the peripheral wall surface of the piston rod.

[0011] In the above scheme, by providing an elastic positioning ring and an elastic sealing ring, the seal can be elastically limited and contacted between the outer peripheral wall of the piston rod and the peripheral wall surface of the annular sealing groove, and the dustproof sealing effect of the seal will be better.

[0012] Furthermore, a mounting ring groove with an inverted V-shaped cross section is formed at the bottom of the sealing member between the elastic positioning ring and the elastic sealing ring, and an elastic supporting member is installed in the mounting ring groove.

[0013] In the above solution, by arranging an elastic support member in the mounting ring groove on the bottom of the seal, the elastic support member can support the elastic positioning ring and the elastic sealing ring, thereby ensuring the installation stability and sealing stability of the seal.

[0014] Furthermore, an axial convex portion is provided in the middle of the front end face of the cylinder body, and the first air hole and the second air hole of the cylinder body are arranged on the convex portion at intervals up and down, and axial through grooves are formed between the roots of the left and right side walls of the convex portion and the front end face of the cylinder body, and the axial through grooves are in an arc-shaped structure and are used to install the magnetically controlled switch.

[0015] In the above scheme, an outer convex portion is provided in the middle of the front end surface of the cylinder body to provide for reasonable shaping of the first air hole and the second air hole, and the magnetic control switch matching the first air hole and the magnetic control switch matching the second air hole can be integrally arranged on the cylinder body through the corresponding axial through grooves, and the structural design is reasonable.

[0016] Furthermore, the piston rod is composed of a first large diameter section and a first small diameter section arranged upper and lower, and the inner cavity of the magnetic ring seat is provided with a second large diameter section and a second small diameter section upper and lower, the second large diameter section is tightly matched with the first large diameter section, and the second small diameter section is slidingly matched with the first small diameter section.

[0017] In the above scheme, the piston rod is set to a structure of a first large diameter section and a first small diameter section, and the inner cavity of the magnetic ring seat is set to a corresponding structure of a second large diameter section and a second small diameter section. When installing the magnetic ring seat, the magnetic ring seat can be slidably installed through the cooperation of the second small diameter section and the first small diameter section. When it moves to the top end of the first small diameter section, the second large diameter section forms a tight fit with the first large diameter section. After being installed in place, the installation position of the magnetic ring seat can be limited. The installation of the magnetic ring seat is simple and convenient, and the structural design is reasonable. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a cross-sectional view of the overall structure of the utility model;

[0019] Figure 2 It is a partial structural decomposition schematic diagram of the utility model;

[0020] Figure 3 This is a schematic diagram of the cylinder structure of the utility model;

[0021] Figure 4 This is a schematic diagram of the seal structure of the utility model;

[0022] Figure 5 It is a cross-sectional view of the magnetic ring seat structure of the utility model.

[0023] In the figure: 1-cylinder body, 2-rear cylinder head, 3-piston rod, 4-piston, 5-accommodating space, 6-through hole, 7-piston skirt, 8-annular weight reduction chamber, 9-axial convex portion, 10-first annular flexible member, 11-magnetic ring, 12-magnetic ring seat, 13-second annular flexible member, 14-avoidance chamber, 15-fixed head, 16-fixing nut, 17-annular sealing groove, 18-seal, 19-elastic positioning ring, 20-elastic sealing ring, 21-mounting ring groove, 22-elastic support member, 23-external convex portion, 24-first air hole, 25-second air hole, 26-axial through groove, 27-first large diameter section, 28-first small diameter section, 29-second large diameter section, 30-second small diameter section. DETAILED DESCRIPTION

[0024] In order to more clearly illustrate the embodiments of the utility model and / or the technical solutions in the prior art, the specific implementation methods of the utility model will be described below with reference to the accompanying drawings. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings and other implementation methods can be obtained based on these drawings without creative work. In addition, the orientation only represents the relative position relationship between the components, not the absolute position relationship.

[0025] See also Figures 1 to 5As shown, a buffer panel cylinder comprises a cylinder body 1, a rear cylinder cover 2, a piston rod 3, and a piston 4. The cylinder body 1 and the rear cylinder cover 2 form a receiving space 5. The inner end of the piston rod 3 is sealed and extends into the receiving space 5 through a through hole 6 at the top center of the cylinder body 1. The piston 4 is tightly connected to the inner end of the piston rod 3, and the circumference of the piston 4 is a piston skirt 7 with an annular weight reduction cavity 8. It should be noted that an annular groove for installing a sealing ring can also be formed on the circumferential wall surface of the piston skirt 7, and a sealing ring can also be provided at the bottom end of the piston skirt 7. There is a concentric axial protrusion 9, on which is sleeved a first annular flexible member 10 which buffers the inner end of the rear cylinder cover 2 and the bottom end of the piston skirt 7. A magnetic ring 11 which is movably connected, and a magnetic ring seat 12 and a second annular flexible member 13 which are rigidly connected are also provided on the inner end of the piston rod 3. The upper end of the piston skirt 7 and the lower end of the magnetic ring seat 12 are used for the magnetic ring 11 to abut and limit. The magnetic ring 11 is used to control the on and off of an external magnetically controlled switch, and the upper end of the magnetic ring seat 12 is used for the second annular flexible member 13 to abut and limit.

[0026] In the above scheme, by setting the first annular flexible member 10 and the second annular flexible member 13 on both sides of the inner end of the piston rod 3, when the piston 4 drives the piston rod 3 to move upward to the maximum stroke, the second annular flexible member 13 reduces the impact force of the piston rod 3 on the cylinder body 1 through the generated deformation, and when the piston 4 drives the piston rod 3 to move downward to the maximum stroke, the first annular flexible member 10 reduces the impact force of the piston 4 on the rear cylinder cover 2 through the generated deformation, so that the cylinder body 1 and the rear cylinder cover 2 are not easily deformed and damaged, and by setting the magnetic ring 11, the magnetic ring 11 will change its position with the movement of the piston rod 3 to control the on and off of the magnetic control switch, so as to achieve the purpose of accurately positioning the position of the piston rod 3, so that the corresponding gas can be controlled according to the position of the piston rod 3 Whether the pipe is ventilated to further reduce the impact force, and an annular weight-reducing chamber 8 is arranged on the piston skirt 7, which can reduce the weight of the piston 4, thereby correspondingly reducing the movement inertia of the piston rod 3, and also making the service life of the first annular flexible member 10 and the second annular flexible member 13 longer, and the magnetic ring 11 is position-limited by the lower end of the magnetic ring seat 12 and the upper end of the piston skirt 7. The position limitation method of the magnetic ring 11 is simple and the operation is stable. The first annular flexible member 10 and the piston 4, as well as the second annular flexible member 13, the magnetic ring seat 12, the magnetic ring 11, the piston 4 and the piston rod 3 are all in a sleeve-fixed manner, and the installation method is also simple. Therefore, the cylinder can stably and reasonably realize the buffering effect, the overall buffering effect is good, and the space can be reasonably utilized.

[0027] In this embodiment, an avoidance cavity 14 is provided at the center of the inner wall surface of the rear cylinder head 2. The avoidance cavity 14 is used to cooperate with the axial protrusion 9, and the upper end surface of the avoidance cavity 14 acts on the lower end of the second annular flexible member 13. More specifically, the bottom of the axial protrusion 9 will form a fixed boss for fixing the second annular flexible member 13. Therefore, during the buffering action with the rear cylinder head 2, the inner end bottom of the piston rod 3 and the axial protrusion 9 can be partially moved to the avoidance cavity 14 to achieve safe avoidance, and also make the interaction between the piston rod 3 and the rear cylinder head 2 concentrated on the second annular flexible member 13, so as to fully utilize the buffering function of the second annular flexible member 13, and the structural design is more reasonable.

[0028] In this embodiment, a fixing head 15 surrounding the through hole 6 is further provided at the top of the cylinder body 1, and an external thread for connecting the fixing nut 16 is provided on the outer wall surface of the fixing head 15, and an annular sealing groove 17 is provided on the inner wall surface of the fixing head 15, and a sealing member 18 is installed in the annular sealing groove 17. The cylinder can be quickly fixed to the panel by means of a fixing head with a fixing nut 16, and the installation method is simple. The annular sealing groove 17 is opened on the inner wall surface of the fixing head 15, and the position of the annular sealing groove 17 is relatively high, so that the sealing member 18 can achieve dustproof sealing and the installation of the sealing member 18 is also more convenient, and the structural design is more reasonable.

[0029] In this embodiment, the top of the seal 18 is set to a cylindrical structure, and its inner diameter is also larger than the diameter of the piston rod 3. An elastic positioning ring 19 and an elastic sealing ring 20 located inside the elastic positioning ring 19 are also provided at the bottom of the seal 18. The elastic positioning ring 19 is a cone with a small top and a large bottom, and the bottom is in limited contact with the peripheral wall surface of the annular sealing groove 17. The elastic sealing ring 20 is a cone with a large top and a small bottom, and the bottom is in sealing contact with the peripheral wall surface of the piston rod 3. By arranging the elastic positioning ring 19 and the elastic sealing ring 20, after the piston rod 3 is installed, the seal 18 has an elastic fit with the annular sealing groove 17, that is, the seal 18 can be elastically limited in contact between the outer peripheral wall of the piston rod 3 and the peripheral wall surface of the annular sealing groove 17, and the dustproof sealing effect of the seal 18 will be better. More specifically, the elastic positioning ring 19 and the bottom of the annular sealing groove 17 are also set to cylindrical structures.

[0030] In this embodiment, a mounting ring groove 21 with an inverted V-shaped cross-section is formed at the bottom of the seal 18 between the elastic positioning ring 19 and the elastic sealing ring 20, and an elastic support member 22 is installed in the mounting ring groove 21. By arranging the elastic support member 22 in the mounting ring groove 21 on the bottom of the seal 18, the elastic support member 22 can form support for the elastic positioning ring 20 and the elastic sealing ring 21, thereby ensuring the installation stability and sealing stability of the seal 18.

[0031] In this embodiment, an axial convex portion 23 is provided in the middle of the front end surface of the cylinder body 1, and the length of the convex portion 23 is consistent with the height of the front end surface of the cylinder body 1. The first air hole 24 and the second air hole 25 of the cylinder body 1 are arranged on the convex portion 23 at intervals from top to bottom. More specifically, the first air hole 24 is connected to the upper end of the accommodating space 5, and the second air hole is connected to the lower end of the accommodating space 5. Axial through grooves 26 are formed between the roots of the left and right side walls of the convex portion 23 and the front end surface of the cylinder body 1. The axial through grooves 26 are arc-shaped and are used to install magnetic control switches. The magnetic control switches in the two axial through grooves 26 can respectively cooperate with the first air hole 24 and the second air hole 25. By arranging the convex portion 23 in the middle of the front end surface of the cylinder body 1, the first air hole 24 and the second air hole 25 can be reasonably formed, and the magnetic control switch cooperating with the first air hole 24 and the magnetic control switch cooperating with the second air hole 25 can be integrally arranged on the cylinder body 1 through the corresponding axial through grooves 26, and the structural design is reasonable.

[0032] In this embodiment, the piston rod 3 is composed of a first large diameter section 27 and a first small diameter section 28 arranged up and down, and the inner cavity of the magnetic ring seat 12 is provided with a second large diameter section 29 and a second small diameter section 30 up and down. The second large diameter section 29 is tightly matched with the first large diameter section 27, and the second small diameter section 30 is slidingly matched with the first small diameter section 28. The piston 3 is set to a structure of the first large diameter section 27 and the first small diameter section 28, and the inner cavity of the magnetic ring seat 12 is set to a corresponding structure of the second large diameter section 29 and the second small diameter section 30. When the magnetic ring seat 12 is installed, the magnetic ring seat 12 will be slidably installed through the cooperation of the second small diameter section 30 and the first small diameter section 28. When it moves to the top end of the first small diameter section 28, the second large diameter section 29 is tightly matched with the first large diameter section 30. After being installed in place, the installation position of the magnetic ring seat 12 can be limited. The magnetic ring seat 12 is simple and convenient to install, and the structural design is reasonable.

[0033] The above contents are further detailed descriptions of the present invention in combination with specific preferred implementations, and the specific implementation of the present invention cannot be considered to be limited to these descriptions. For ordinary technicians in the technical field to which the present invention belongs, several simple deductions or substitutions can be made without departing from the concept of the present invention, which should be regarded as falling within the protection scope of the present invention.

Claims

1. A buffer panel cylinder, comprising a cylinder body (1), a rear cylinder cover (2), a piston rod (3), and a piston (4), wherein the cylinder body (1) and the rear cylinder cover (2) form a receiving space (5), the inner end of the piston rod (3) is sealed and extends into the receiving space (5) through a through hole (6) at the top center of the cylinder body (1), and the piston (4) is tightly matched with the inner end of the piston rod (3), characterized in that: The circumference of the piston (4) is a piston skirt (7) having an annular weight-reducing cavity (8). The bottom end of the piston skirt (7) is also provided with a concentric axial protrusion (9). The axial protrusion (9) is provided with a first annular flexible member (10) for buffering the inner end of the rear cylinder cover (2) and the bottom end of the piston skirt (7). The inner end of the piston rod (3) is also provided with a magnetic ring (11) that is movably connected, and a magnetic ring seat (12) and a second annular flexible member (13) that are tightly connected. The upper end of the piston skirt (7) and the lower end of the magnetic ring seat (12) are provided for the magnetic ring (11) to abut against and limit. The magnetic ring (11) is used to control the on and off of an external magnetically controlled switch. The upper end of the magnetic ring seat (12) is provided for the second annular flexible member (13) to abut against and limit.

2. A buffer type panel cylinder according to claim 1, characterized in that: A relief cavity (14) is provided at the center of the inner wall surface of the rear cylinder cover (2), the relief cavity (14) is used to cooperate with the axial protrusion (9), and the upper end surface of the relief cavity (14) interacts with the lower end of the second annular flexible member (13).

3. The buffer panel cylinder according to claim 1, characterized in that: The top of the cylinder body (1) is also provided with a fixing head (15) surrounding the through hole (6); the outer wall surface of the fixing head (15) is provided with an external thread for connecting a fixing nut (16); the inner wall surface of the fixing head (15) is provided with an annular sealing groove (17); a sealing member (18) is installed in the annular sealing groove (17).

4. A buffer type panel cylinder according to claim 3, characterized in that: The bottom of the sealing member (18) is provided with an elastic positioning ring (19) and an elastic sealing ring (20) located inside the elastic positioning ring (19); the elastic positioning ring (19) is in a conical shape with a small top and a large bottom, and the bottom is in limited contact with the peripheral wall surface of the annular sealing groove (17); the elastic sealing ring (20) is in a conical shape with a large top and a small bottom, and the bottom is in sealing contact with the peripheral wall surface of the piston rod (3).

5. A buffer type panel cylinder according to claim 4, characterized in that: A mounting ring groove (21) with an inverted V-shaped cross section is formed at the bottom of the sealing member (18) between the elastic positioning ring (19) and the elastic sealing ring (20), and an elastic supporting member (22) is installed in the mounting ring groove (21).

6. The buffer panel cylinder according to claim 1, characterized in that: An axial convex portion (23) is provided in the middle of the front end surface of the cylinder body (1); a first air hole (24) and a second air hole (25) of the cylinder body (1) are arranged on the convex portion (23) at intervals from top to bottom; and axial through grooves (26) are formed between the roots of the left and right side walls of the convex portion (23) and the front end surface of the cylinder body (1); the axial through grooves (26) are in an arc-shaped structure and are used for mounting the magnetically controlled switch.

7. The buffer panel cylinder according to claim 1, characterized in that: The piston rod (3) is composed of a first large diameter section (27) and a first small diameter section (28) arranged above and below, and the inner cavity of the magnetic ring seat (12) is provided with a second large diameter section (29) and a second small diameter section (30) above and below, the second large diameter section (29) is tightly matched with the first large diameter section (27), and the second small diameter section (30) is slidably matched with the first small diameter section (28).

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