Springback adjusting structure of steel-ball-free spring

Abstract

The springback adjusting structure comprises a connecting base, an adjusting core, an ejector pin and a piston rod, a movable cavity is transversely formed in the connecting base, an adjusting cavity is longitudinally formed in the connecting base, the movable cavity is communicated with the adjusting cavity, one end of the piston rod is located in the movable cavity and is in threaded connection with the movable cavity, and the other end of the piston rod is in threaded connection with the ejector pin. The ejector pin is arranged in the piston rod in a penetrating mode, one end of the ejector pin extends into the adjusting cavity, the adjusting core comprises an upper conical body and a lower threaded column, grooves are formed in the surface of the conical body in an annular array mode, and the ejector pin abuts against the surface of the conical body all the time under the action of pressure. According to the utility model, the gear function and the gear sensing which need to be realized are integrated on the same structure, so that the space utilization rate is greatly improved, and more conditions can be designed for use; in addition, the simpler structural design brings higher precision, lower cost and shorter period, the advantages of the structure are indirectly expanded, and the applicability of the structure is improved.

Description

Technical Field

[0001] This utility model relates to the field of spring technology, specifically to a rebound adjustment structure for a ballless spring. Background Technology

[0002] In a typical ball-spring type rebound adjustment structure, the adjustment core is cam-shaped on the side. When the adjustment core is rotated, the parts do not move up and down. The movement of the pin is achieved by the unevenness of the cam surface on the side, which drives the structure to operate and realize its function. The gear position is achieved by the ball and the spring. Rotating the adjustment core causes the ball to roll in the groove. The spring provides the compression force to ensure that the ball stays in the groove, providing the gear position.

[0003] The above-mentioned components have the following technical problems:

[0004] ① The structure is complex and there are many parts; the main part, the adjusting core, has a complex structure with a cam surface on its side, which is difficult to process and has low precision. It also requires drilling blind holes and assembling steel ball springs. In order to achieve the gear feel, the connecting seat of the counter part needs to be opened with multiple uniform grooves in the corresponding position, which greatly increases the processing cost and processing cycle.

[0005] ② It occupies a lot of space; the gear function and gear feel that the adjustment core needs to achieve are realized by two different structures. The failure to integrate the structures results in the parts occupying a lot of space, making it difficult to arrange in some small spaces and causing design difficulties. Utility Model Content

[0006] The purpose of this utility model is to address the shortcomings and deficiencies of the existing technology by providing a spring-free rebound adjustment structure that integrates gear shifting function and gear shifting feel into the same structure and has a relatively simple structure.

[0007] To achieve the above objectives, the technical solution adopted by this utility model is: a rebound adjustment structure for a ball-less spring, comprising a connecting seat, an adjusting core, a pin, and a piston rod. Its innovation lies in: the connecting seat has a horizontally arranged movable cavity and a vertically opened adjusting cavity inside, the movable cavity and the adjusting cavity are connected, one end of the piston rod is located inside the movable cavity, and the two are threadedly connected, the pin is disposed through the piston rod, and one end extends into the adjusting cavity, the adjusting core comprises an upper conical body and a lower threaded column, the surface of the conical body is provided with a ring array of grooves, and the pin always abuts against the surface of the conical body under pressure.

[0008] Furthermore, a sealing ring and a retaining ring are provided between the adjusting core and the adjusting cavity for sealing and limiting.

[0009] Furthermore, one end of the ejector pin has a rounded head structure.

[0010] The beneficial effects of this utility model after adopting the above structure are as follows:

[0011] This invention integrates the required gear shift function and gear shift feel into the same structure, greatly improving space utilization and allowing for a wider range of design applications. In addition, the simpler structural design brings higher precision, lower cost, and shorter cycle time, indirectly expanding the advantages of the structure and improving its applicability. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of this utility model;

[0013] Figure 2 This is a schematic diagram of the adjusting core structure in this utility model.

[0014] Explanation of reference numerals in the attached figures:

[0015] 1 Connecting seat, 11 Movable cavity, 12 Adjusting cavity, 2 Adjusting core, 21 Conical body, 22 Threaded column, 23 Groove, 3 Ejector pin, 4 Piston rod, 5 Sealing ring, 6 Snap ring. Detailed Implementation

[0016] The present invention will be further described below with reference to the accompanying drawings.

[0017] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only for explaining the present utility model and are not intended to limit the present utility model.

[0018] See Figure 1-2 A rebound adjustment structure for a ball-less spring includes a connecting seat 1, an adjusting core 2, a pin 3, and a piston rod 4. The connecting seat 1 has a horizontally arranged movable cavity 11 and a vertically opened adjusting cavity 12 inside, which are connected. One end of the piston rod 4 is located inside the movable cavity 11 and the two are threadedly connected. The pin 3 is disposed inside the piston rod 4 and one end extends into the adjusting cavity 12. The adjusting core 2 includes an upper conical body 21 and a lower threaded post 22. The surface of the conical body 21 is provided with grooves 23 arranged in an annular array. The pin 3 always abuts against the surface of the conical body 21 under pressure. Specifically, because the bottom of the adjusting core 2 has a thread, when the adjusting core 2 rotates clockwise, it moves downwards. Since its side is a conical body 21, this downward movement causes the push pin 3 to move to the right, pushing the push rod and increasing the adjustment range. When the adjusting core 2 rotates counterclockwise, the pin 3, due to the internal pressure of the damper, pushes the structure in the opposite direction, thus decreasing the adjustment range. (The above is for reference only.) Figure 1 .

[0019] The adjusting core 2 has a groove 23 on its side. When the adjusting core 2 moves down or up, one end of the pin 3 intermittently engages in the groove 23, replacing the spring with the pressure inside the damper, thus providing a tactile feedback during adjustment. (See above for reference.) Figure 2 .

[0020] In this embodiment, a sealing ring 5 and a retaining ring 6 are also provided between the adjusting core 2 and the adjusting cavity 12 for sealing and limiting. The connecting seat 1 and the adjusting core 2 are threaded together, but they are not locked; the adjusting core 2 can pass through the hexagonal hole at its upper end (see...). Figure 2 Adjust the specific position and assemble the sealing ring 5 and the retaining ring 6 to achieve sealing and limiting.

[0021] In this embodiment, one end of the ejector pin 3 has a rounded head structure, which makes it less likely to damage the groove 23.

[0022] The above description is only used to illustrate the technical solution of this utility model and is not intended to limit it. Any other modifications or equivalent substitutions made by those skilled in the art to the technical solution of this utility model, as long as they do not depart from the spirit and scope of the technical solution of this utility model, should be covered within the scope of the claims of this utility model.

Claims

1. A spring without steel ball rebound adjustment structure, comprising a connecting seat, an adjustment core, a thimble and a piston rod, characterized in that: The connecting seat is internally provided with a transverse movable cavity and a longitudinal adjusting cavity, the movable cavity and the adjusting cavity are communicated, one end of the piston rod is located in the movable cavity and is threadedly connected with the movable cavity, the thimble is arranged in the piston rod and extends into the adjusting cavity, the adjusting core comprises a conical body at the upper portion and a threaded column at the lower portion, a groove is arranged in the annular array of the conical body surface, and the thimble always abuts against the conical body surface under the action of pressure.

2. The no-bead spring resiliency adjustment structure according to claim 1, characterized by: The adjusting core and the adjusting cavity are further provided with a sealing ring and a clamping ring for sealing and limiting.

3. The beadless spring resiliency adjusting structure according to claim 1, wherein: One end of the thimble is in a round head structure.

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