Built-in spring type damping gas spring

Abstract

The utility model discloses a built-in spring type damping gas spring, and relates to the technical field of damping gas springs. The hydraulic cylinder comprises a cylinder barrel, the cylinder barrel is of a hollow cylindrical structure, a piston is movably installed in the cylinder barrel, a piston rod is fixedly installed on the upper surface of the piston, the top end of the piston rod penetrates through the top end of the cylinder barrel, and a first spring is arranged on the piston rod located in the cylinder barrel in a sleeved mode. If the piston rod needs to move to the same position, the piston rod is lifted to the highest position, then the positioning assembly moves to the position corresponding to the recorded scales in the sliding groove and is fixed to the current position, then the piston rod moves downwards, the piston rod can drive the connecting rod to move synchronously, and the positioning assembly is fixed to the position corresponding to the recorded scales. The connecting rod drives the telescopic rod to move synchronously, the scale at the joint of the telescopic rod and the top end of the square barrel is observed to be the same as the recorded scale, and the positioning assembly mainly plays a role in limiting excessive downward movement of the piston rod.

Description

Technical Field

[0001] The utility model relates to the technical field of damping gas springs, in particular to a built-in spring type damping gas spring. Background Art

[0002] Damping gas spring is an industrial accessory that can support, buffer, brake, adjust height and angle, etc. It consists of the following parts: pressure cylinder, piston rod, piston, sealing guide sleeve, filler (inert gas or oil-gas mixture), cylinder control element and cylinder control element (referring to controllable gas spring) and joints, etc. The working principle is to fill the closed pressure cylinder with inert gas or oil-gas mixture, the pressure in the cavity is several times or dozens of times the atmospheric pressure, and the pressure difference on both sides of the piston is used to realize the movement of the piston rod.

[0003] However, when using the existing damping gas spring, if you want to move the piston rod to a certain specified position, you can usually only estimate or use a measuring tool to locate it. However, the estimation will result in a large error, and the measuring tool cannot be used anytime and anywhere, resulting in certain difficulties in moving the piston rod to a certain specified position. For this reason, a built-in spring damping gas spring is proposed. Utility Model Content

[0004] The utility model aims to solve the problem that it is difficult to move a piston rod to a certain specified position when the existing damping gas spring is in use. The utility model provides a built-in spring damping gas spring.

[0005] In order to achieve the above-mentioned purpose, the utility model specifically adopts the following technical solutions:

[0006] A built-in spring damping gas spring comprises a cylinder, which is a hollow cylindrical structure. A piston is movably installed inside the cylinder, a piston rod is fixedly installed on the upper surface of the piston, the top of the piston rod passes through the top of the cylinder, a spring is sleeved on the piston rod inside the cylinder, an air control element is fixedly installed on the side wall of the cylinder, and mounting rings are fixedly installed on the bottom end of the cylinder and the top end of the piston rod, a square tube is fixedly installed on the side wall of the cylinder, a telescopic rod is movably installed inside the square tube, a scale is provided on the side of the telescopic rod close to the piston rod, a convex-shaped slide groove is provided on the side wall of the telescopic rod, a positioning component for positioning the telescopic position of the piston rod is provided inside the slide groove, a connecting rod is fixedly installed on the top of the telescopic rod, and the connecting rod is fixedly connected to the top of the piston rod.

[0007] Furthermore, the positioning assembly includes a slider, a slider is movably installed inside the slide groove, a positioning groove is provided on the side wall of the slider, a spring 2 is fixedly installed on the inner bottom surface of the positioning groove, a positioning rod is fixedly installed on the free end of the spring 2, the positioning rod is movably installed inside the positioning groove, a damping shaft is movably installed on the end of the positioning rod away from the spring 2, a rotating rod is fixedly installed on the side wall of the damping shaft, a clamping groove is provided on the side wall of the telescopic rod, a rectangular groove is provided on the side of the rotating rod close to the telescopic rod, two inner support blocks are arranged on the side of the rotating rod close to the telescopic rod, the two inner support blocks are both located inside the clamping groove, and a driving assembly for making the two inner support blocks approach or move away from each other is arranged inside the rectangular groove.

[0008] Furthermore, the driving assembly includes a servo motor, and the servo motor is fixedly installed on one end of the rotating rod away from the damping shaft. The output end of the servo motor extends to the inside of the rectangular groove and is fixedly connected to a bidirectional threaded rod. Both ends of the bidirectional threaded rod are threadedly connected to movable blocks, and the two movable blocks are respectively fixedly connected to the two inner support blocks.

[0009] Furthermore, an anti-skid pad is fixedly installed on one side of the two inner support blocks that are away from each other, and the anti-skid pad is made of elastic rubber material.

[0010] Furthermore, a groove is provided on one side of the rotating rod away from the telescopic rod, and a handle is movably installed inside the groove.

[0011] Furthermore, a magnetic block is embedded and installed on the side of the sliding block away from the positioning rod, and a magnetic strip is embedded and installed on the inner side wall surface of the sliding groove, and the magnetic block and the magnetic strip are attracted to each other.

[0012] The beneficial effects of the utility model are as follows:

[0013] 1. In the utility model, when the piston rod moves upward or downward, the piston rod will drive the connecting rod to move up and down synchronously, and the connecting rod will drive the telescopic rod to move up and down synchronously. When the piston rod moves up and down to the specified position, it is only necessary to observe the connection between the telescopic rod and the top end of the square tube at this time, and record the scale corresponding to the connection between the telescopic rod and the top end of the square tube through the scale. If the piston rod needs to be moved to the same position later, the piston rod is first raised to the highest position, and then the positioning assembly is moved inside the slide groove to the corresponding position of the recorded scale, and the positioning assembly is fixed at the current position, and then the piston rod is moved downward, the piston rod will drive the connecting rod to move synchronously, and the connecting rod will drive the telescopic rod to move synchronously. At the same time, observe the scale of the connection between the telescopic rod and the top end of the square tube at this time to make it the same as the recorded scale. The main function of the positioning assembly is to limit the excessive downward movement of the piston rod. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0015] Figure 2 It is a specific schematic diagram of the drive assembly of the utility model;

[0016] Figure 3 It is a specific schematic diagram of the positioning component of the utility model;

[0017] Figure 4 It is a specific schematic diagram of the telescopic rod of the utility model;

[0018] 1. Cylinder; 2. Piston; 3. Piston rod; 4. Spring 1; 5. Air control element; 6. Mounting ring; 7. Square cylinder; 8. Telescopic rod; 9. Scale; 10. Slide groove; 11. Positioning assembly; 1101. Slider; 1102. Positioning groove; 1103. Spring 2; 1104. Positioning rod; 1105. Damping shaft; 1106. Rotating rod; 1107. Slot; 1108. Rectangular groove; 1109. Inner support block; 1110. Anti-slip pad; 1111. Groove; 1112. Handle; 1113. Magnetic block; 1114. Magnetic strip; 12. Drive assembly; 1201. Servo motor; 1202. Bidirectional threaded rod; 1203. Movable block; 13. Connecting rod. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0020] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0021] It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings. In addition, the terms "first", "second", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0022] In the description of the embodiments of the present invention, it should be noted that the terms "inside", "outside", "upper", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the utility model product is usually placed when in use. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0023] like Figures 1 to 4 As shown, a built-in spring damping gas spring comprises a cylinder 1, which is a hollow cylindrical structure inside. A piston 2 is movably installed inside the cylinder 1, a piston rod 3 is fixedly installed on the upper surface of the piston 2, the top of the piston rod 3 passes through the top of the cylinder 1, a spring 4 is sleeved on the piston rod 3 inside the cylinder 1, an air control element 5 is fixedly installed on the side wall of the cylinder 1, a mounting ring 6 is fixedly installed on the bottom end of the cylinder 1 and the top end of the piston rod 3, a square tube 7 is fixedly installed on the side wall of the cylinder 1, a telescopic rod 8 is movably installed inside the square tube 7, a scale 9 is provided on the side of the telescopic rod 8 close to the piston rod 3, a convex-shaped slide groove 10 is provided on the side wall of the telescopic rod 8, a positioning component 11 for positioning the telescopic position of the piston rod 3 is provided inside the slide groove 10, a connecting rod 13 is fixedly installed on the top of the telescopic rod 8, and the connecting rod 13 is fixedly connected to the top of the piston rod 3. It should be noted that when the piston rod 3 moves to When moving up or down, the piston rod 3 will drive the connecting rod 13 to move up and down synchronously, and the connecting rod 13 will drive the telescopic rod 8 to move up and down synchronously. When the piston rod 3 moves up and down to the specified position, it is only necessary to observe the connection between the telescopic rod 8 and the top end of the square tube 7 at this time, and record the scale 9 corresponding to the connection between the telescopic rod 8 and the top end of the square tube 7 through the scale 9. If the piston rod 3 needs to be moved to the same position later, first raise the piston rod 3 to the highest position, and then move the positioning assembly 11 inside the slide groove 10 to the corresponding position of the recorded scale 9, and fix the positioning assembly 11 at the current position, and then move the piston rod 3 downward, the piston rod 3 will drive the connecting rod 13 to move synchronously, and the connecting rod 13 will drive the telescopic rod 8 to move synchronously. At the same time, observe the scale 9 where the telescopic rod 8 is connected to the top end of the square tube 7 at this time, and make it the same as the recorded scale 9. The main function of the positioning assembly 11 is to limit the excessive downward movement of the piston rod 3.

[0024] like Figures 1 to 4As shown, the positioning assembly 11 includes a slider 1101, the slider 1101 is movably installed inside the slide slot 10, a positioning slot 1102 is provided on the side wall of the slider 1101, a spring 1103 is fixedly installed on the inner bottom surface of the positioning slot 1102, a positioning rod 1104 is fixedly installed on the free end of the spring 1103, the positioning rod 1104 is movably installed inside the positioning slot 1102, and a damping shaft 1105 is movably installed on one end of the positioning rod 1104 away from the spring 1103. A rotating rod 1106 is fixedly mounted on the side wall of the damping shaft 1105, a slot 1107 is provided on the side wall of the telescopic rod 8, a rectangular slot 1108 is provided on the side of the rotating rod 1106 close to the telescopic rod 8, two inner support blocks 1109 are provided on the side of the rotating rod 1106 close to the telescopic rod 8, both inner support blocks 1109 are located inside the slot 1107, and a driving assembly 12 is provided inside the rectangular slot 1108 to make the two inner support blocks 1109 move closer to or away from each other. It should be noted that, by The slider 1101 is slid inside the slide slot 10 to a specified position. At this time, the rotating rod 1106 is in a vertical state. Then, the rotating rod 1106 is pulled to the side away from the second spring 1103. The second spring 1103 is stretched by the tension, so that the positioning rod 1104, the damping shaft 1105, and the rotating rod 1106 move to the side away from the second spring 1103. When the rotating rod 1106 is exposed from the inside of the slide slot 10, the rotating rod 1106 is rotated to the horizontal state. The rotating rod 1106 rotates The movement will drive the damping shaft 1105 to rotate synchronously, so that the two inner support blocks 1109 are both located inside the slot 1107, and then the driving assembly 12 is controlled to make the two inner support blocks 1109 move away from each other and squeeze the inner wall surfaces on both sides of the slot 1107 respectively, so that the rotating rod 1106 can be fixed in the current position in a horizontal state. The rotating rod 1106 is now in contact with the top of the cylinder 1 and the square tube 7, which can prevent the telescopic rod 8, the connecting rod 13, and the piston rod 3 from continuing to move downward, thereby preventing the piston rod 3 from moving downward excessively.

[0025] like Figures 1 to 4 As shown, the driving component 12 includes a servo motor 1201, and the servo motor 1201 is fixedly installed at one end of the rotating rod 1106 away from the damping shaft 1105, and the output end of the servo motor 1201 extends to the inside of the rectangular groove 1108 and is fixedly connected with a bidirectional threaded rod 1202, and both ends of the bidirectional threaded rod 1202 are threadedly connected with movable blocks 1203, and the two movable blocks 1203 are respectively fixedly connected to the two inner support blocks 1109. It should be noted that the servo motor 1201 can drive the bidirectional threaded rod 1202 to rotate reciprocatingly, so that the two movable blocks 1203 move away from or close to each other, and each movable block 1203 can synchronously drive the corresponding inner support block 1109 to move when moving, and the two inner support blocks 1109 are used to move away from each other to squeeze the inner wall surfaces on both sides of the slot 1107.

[0026] like Figures 1 to 4 As shown, an anti-skid pad 1110 is fixedly installed on one side of the two inner support blocks 1109 that are away from each other. The anti-skid pad 1110 is made of elastic rubber material. It should be noted that when the two inner support blocks 1109 are away from each other and respectively squeeze the inner wall surfaces on both sides of the slot 1107, the two anti-skid pads 1110 will respectively contact the inner wall surfaces on both sides of the slot 1107, thereby increasing the friction force to ensure the fixing effect.

[0027] like Figures 1 to 4 As shown, a groove 1111 is provided on the side of the rotating rod 1106 facing away from the telescopic rod 8, and a handle 1112 is movably installed inside the groove 1111. It should be noted that when pulling the rotating rod 1106, the handle 1112 can be rotated first, and then the rotating rod 1106 can be pulled by pinching the handle 1112, so as to avoid the rotating rod 1106 being located inside the slide groove 10 and being inconvenient to hold.

[0028] like Figures 1 to 4 As shown, a magnetic block 1113 is embedded in the side of the slider 1101 facing away from the positioning rod 1104, and a magnetic strip 1114 is embedded in the inner side wall of the slide groove 10. The magnetic block 1113 and the magnetic strip 1114 are adsorbed on each other. It should be noted that the magnetic block 1113 and the magnetic strip 1114 are adsorbed on each other so that the slider 1101 can be stably placed inside the slide groove 10 when the rotating rod 1106 is not used for limiting.

[0029] In summary:

[0030] When the piston rod 3 moves upward or downward, the piston rod 3 will drive the connecting rod 13 to move up and down synchronously, and the connecting rod 13 will drive the telescopic rod 8 to move up and down synchronously. When the piston rod 3 moves up and down to the specified position, it is only necessary to observe the connection between the telescopic rod 8 and the top end of the square tube 7 at this time, and record the scale 9 corresponding to the connection between the telescopic rod 8 and the top end of the square tube 7 through the scale 9. If the piston rod 3 needs to be moved to the same position later, the piston rod 3 is first raised to the highest position, and then the positioning assembly 11 is moved inside the slide groove 10 to the corresponding position of the recorded scale 9, and the positioning assembly 11 is fixed at the current position, and then the piston rod 3 is moved downward, the piston rod 3 will drive the connecting rod 13 to move synchronously, and the connecting rod 13 will drive the telescopic rod 8 to move synchronously. At the same time, observe the scale 9 where the telescopic rod 8 is connected to the top end of the square tube 7 at this time, and make it the same as the recorded scale 9. The main function of the positioning assembly 11 is to limit the excessive downward movement of the piston rod 3.

[0031] The above shows and describes the basic principle, main features and 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 the specification only describe the principles of the utility model. The utility model may be subject to various changes and improvements without departing from the spirit and scope of the utility model. These changes and improvements 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 built-in spring damping gas spring, comprising a cylinder (1), the cylinder (1) being a hollow cylindrical structure, a piston (2) being movably mounted inside the cylinder (1), a piston rod (3) being fixedly mounted on the upper surface of the piston (2), the top end of the piston rod (3) passing through the top end of the cylinder (1), a spring (4) being sleeved on the piston rod (3) located inside the cylinder (1), an air control element (5) being fixedly mounted on the side wall of the cylinder (1), a mounting ring (6) being fixedly mounted on the bottom end of the cylinder (1) and the top end of the piston rod (3), wherein: A square tube (7) is fixedly mounted on the side wall of the cylinder (1), a telescopic rod (8) is movably mounted inside the square tube (7), a scale (9) is arranged on the side of the telescopic rod (8) close to the piston rod (3), a convex-shaped slide groove (10) is provided on the side wall of the telescopic rod (8), a positioning assembly (11) for positioning the telescopic position of the piston rod (3) is arranged inside the slide groove (10), a connecting rod (13) is fixedly mounted on the top end of the telescopic rod (8), and the connecting rod (13) is fixedly connected to the top end of the piston rod (3).

2. The internal spring damping gas spring according to claim 1, characterized in that: The positioning assembly (11) comprises a slider (1101), the slider (1101) is movably mounted inside the slide groove (10), a positioning groove (1102) is provided on the side wall of the slider (1101), a spring 2 (1103) is fixedly mounted on the inner bottom surface of the positioning groove (1102), a positioning rod (1104) is fixedly mounted on the free end of the spring 2 (1103), the positioning rod (1104) is movably mounted inside the positioning groove (1102), and a damping shaft (1104) is movably mounted on one end of the positioning rod (1104) away from the spring 2 (1103). 5), a rotating rod (1106) is fixedly mounted on the side wall surface of the damping rotating shaft (1105), a slot (1107) is provided on the side wall surface of the telescopic rod (8), a rectangular slot (1108) is provided on the side of the rotating rod (1106) close to the telescopic rod (8), two inner support blocks (1109) are provided on the side of the rotating rod (1106) close to the telescopic rod (8), the two inner support blocks (1109) are both located inside the slot (1107), and a driving assembly (12) is provided inside the rectangular slot (1108) for moving the two inner support blocks (1109) closer to or farther from each other.

3. The internal spring damping gas spring according to claim 2, characterized in that: The driving assembly (12) comprises a servo motor (1201), and the servo motor (1201) is fixedly mounted on one end of the rotating rod (1106) away from the damping rotating shaft (1105); the output end of the servo motor (1201) extends to the inside of the rectangular groove (1108) and is fixedly connected to a bidirectional threaded rod (1202); both ends of the bidirectional threaded rod (1202) are threadedly connected to movable blocks (1203), and the two movable blocks (1203) are respectively fixedly connected to the two inner support blocks (1109).

4. The internal spring damping gas spring according to claim 2, characterized in that: An anti-skid pad (1110) is fixedly installed on one side of the two inner support blocks (1109) away from each other, and the anti-skid pad (1110) is made of elastic rubber material.

5. The internal spring damping gas spring according to claim 2, characterized in that: A groove (1111) is provided on the side of the rotating rod (1106) facing away from the telescopic rod (8), and a handle (1112) is movably installed inside the groove (1111).

6. The internal spring damping gas spring according to claim 2, characterized in that: A magnetic block (1113) is embedded and installed on the side of the slider (1101) facing away from the positioning rod (1104), and a magnetic strip (1114) is embedded and installed on the inner side wall surface of the slide groove (10), and the magnetic block (1113) and the magnetic strip (1114) are mutually attracted.

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