CN216447346U - a spring structure - Google Patents

Abstract

The utility model relates to the technical field of elastic pieces, in particular to a spring structure which comprises a lifting seat, a fixed seat, a spring, a bearing platform, a rotating shaft and two ball sleeves, wherein the lifting seat is provided with a first through hole, the fixed seat is provided with a second through hole, the lifting seat is provided with a limiting step and is connected with the bearing platform, the bearing platform is rotatably connected with a plurality of rolling balls, the first through hole penetrates through the limiting step and the bearing platform, the top end of the spring is sleeved outside the limiting step, the bottom end of the spring is connected with the fixed seat, the two ball sleeves are respectively embedded in the first through hole and the second through hole, the rotating shaft sequentially penetrates through the two ball sleeves, the top end of the rotating shaft is provided with a connector, the connector is positioned above the bearing platform, each ball sleeve comprises a sleeve body and a plurality of balls, and the plurality of balls are in rolling contact with the rotating shaft. The spring structure is simple in structure and good in working stability, the rotary table can be driven to rotate, the effect of the transmission assembly is achieved, the rotary table can be protected in a buffering mode, and damage caused by hard impact collision on the rotary table is avoided.

Description

a spring structure

technical field

The utility model relates to the technical field of elastic pieces, in particular to a spring structure.

Background technique

The spring has a simple structure and good elasticity, and is widely used in life or industrial production. In the process of elastic deformation and elastic recovery, the spring mainly plays the role of buffering, absorbing shock and impact, storing and outputting energy. Although the structure of the spring in the prior art is simple, the working stability of the spring is poor. After the working unit is connected to the spring, the working unit is unstable in lifting and lowering, and cannot rotate relative to the spring, which cannot meet the application in special occasions. Therefore, the defects are very obvious, and there is an urgent need to provide a solution.

Utility model content

In order to solve the above technical problems, the purpose of the present invention is to provide a spring structure.

In order to achieve the above purpose, the utility model adopts the following technical solutions:

A spring structure includes a lifting seat, a fixing seat, a spring, a bearing platform, a rotating shaft and two ball sleeves, a first through hole is opened in the middle of the lifting seat, and a second through hole is opened in the middle of the fixing seat , the first via hole and the second via hole are arranged coaxially, the side of the lift seat close to the fixed seat is protruded with a limit step, the side of the lift seat away from the limit step is connected to the bearing platform, the The bearing platform is rotatably connected with a plurality of rolling balls, the first through hole penetrates the limit step and the bearing platform, the top end of the spring is sleeved outside the limit step and is clamped with the limit step, and the bottom end of the spring Connected to the fixed seat, one ball sleeve is embedded in the first through hole, the other ball sleeve is embedded in the second through hole, the rotating shaft passes through the two ball sleeves in sequence, and the spring is sleeved outside the rotating shaft, so The top end of the rotating shaft is provided with a connecting head, the connecting head is located above the bearing platform, and the ball sleeve includes a sleeve body embedded in the first through hole or the second through hole and an inner wall that is evenly rotatably connected to the sleeve body. A number of balls, and a plurality of balls roll against the rotating shaft.

Further, the diameter of the connection head is larger than the diameter of the first via hole.

Further, the bottom end of the rotating shaft is provided with a connecting key.

Further, a positioning portion is protruded from the bottom surface of the fixing seat.

Further, a plurality of locking holes are provided in the circumferential direction of the fixing seat.

The beneficial effects of the present utility model are as follows: a spring structure includes a lifting seat, a fixing seat, a spring, a bearing platform, a rotating shaft and two ball sleeves, the middle of the lifting seat is provided with a first through hole, and the A second via hole is opened in the middle, the first via hole and the second via hole are coaxially arranged, a limit step is protruded on the side of the lift seat close to the fixed seat, and the lift seat is away from the limit step side It is connected with the bearing platform, the bearing platform is rotatably connected with a plurality of rolling balls, the first through hole penetrates the limit step and the bearing platform, and the top end of the spring is sleeved outside the limit step and is clamped with the limit step. , the bottom end of the spring is connected with the fixed seat, one ball sleeve is embedded in the first through hole, the other ball sleeve is embedded in the second through hole, the rotating shaft passes through the two ball sleeves in turn, the spring Sleeve outside the rotating shaft, the top of the rotating shaft is provided with a connecting head, the connecting head is located above the bearing platform, the ball sleeve includes a sleeve body embedded in the first through hole or the second through hole and evenly A plurality of balls are rotatably connected to the inner wall of the sleeve body, and the plurality of balls roll against the rotating shaft. Specifically, the connecting head is fixedly connected with a turntable, the bottom surface of the turntable is in rolling contact with a plurality of rolling balls, and the rotating shaft is drivingly connected with the rotation driving mechanism. In practical applications, the fixed seat is installed on the external structure, the rotating drive mechanism drives the rotating shaft to rotate, and the rotating shaft drives the turntable to rotate. It is conducive to the smooth rotation of the turntable, reducing the frictional resistance on the turntable, and when the turntable is subjected to axial pressure, the axial pressure on the turntable is transferred to the spring through the bearing platform and the lifting seat, the spring is compressed, and the lifting seat drives the bearing The table, the turntable and a ball sleeve move up and down along the rotating shaft synchronously. During this process, the spring can absorb the axial pressure, so as to buffer protection, shock absorption and noise reduction for the turntable, and the rotating shaft can play a role in the lifting of the lifting seat. The function of guiding and limiting improves the stability of the lifting seat. By arranging the ball sleeve, the rotating shaft can not only rotate relative to the fixed seat and the lifting seat, but also can move up and down relative to the fixed seat and the lifting seat. The spring structure has a simple structure and good working stability, not only can drive the turntable to rotate and play the role of a transmission component, but also can buffer and protect the turntable to avoid damage due to hard impact collision.

Description of drawings

FIG. 1 is a schematic diagram of the three-dimensional structure of the present invention.

2 is a cross-sectional view of the ball sleeve of the present invention.

Description of reference numbers:

1. Lifting seat; 2. Fixed seat; 3. Spring; 4. Loading platform; 5. Rotating shaft; 6. Ball sleeve; 7. First through hole; 8. Second through hole; 9. Limit step; 10, Rolling ball; 11, connecting head; 12, sleeve body; 13, ball; 14, connecting key; 15, positioning part; 16, locking hole.

Detailed ways

In order to facilitate the understanding of those skilled in the art, the present invention will be further described below with reference to the embodiments and the accompanying drawings, and the contents mentioned in the embodiments are not intended to limit the present invention.

As shown in FIG. 1 and FIG. 2 , a spring 3 structure provided by the present invention includes a lifting seat 1, a fixing seat 2, a spring 3, a bearing platform 4, a rotating shaft 5 and two ball sleeves 6. The lifting seat The middle part of 1 is provided with a first via hole 7, the middle part of the fixing base 2 is provided with a second via hole 8, the first via hole 7 and the second via hole 8 are coaxially arranged, and the lifting seat 1 is close to the fixing A limit step 9 is protruded from one side of the seat 2, and the side of the lift seat 1 away from the limit step 9 is connected to the bearing platform 4, and the bearing platform 4 is rotatably connected with a plurality of rolling balls 10. The hole 7 penetrates the limit step 9 and the bearing platform 4. The top end of the spring 3 is sleeved outside the limit step 9 and is clamped with the limit step 9. The bottom end of the spring 3 is connected with the fixed seat 2. A ball The sleeve 6 is embedded in the first through hole 7, the other ball sleeve 6 is embedded in the second through hole 8, the rotating shaft 5 passes through the two ball sleeves 6 in sequence, and the spring 3 is sleeved outside the rotating shaft 5, The top end of the rotating shaft 5 is provided with a connecting head 11 , and the connecting head 11 is located above the bearing platform 4 . The ball sleeve 6 includes a sleeve body 12 embedded in the first via hole 7 or the second via hole 8 and The plurality of balls 13 connected to the inner wall of the sleeve body 12 are evenly rotated, and the plurality of balls 13 roll against the rotating shaft 5 . Specifically, a turntable is fixedly connected to the connecting head 11 , the bottom surface of the turntable is in rolling contact with the plurality of balls 10 , and the rotating shaft 5 is drivingly connected to the rotational driving mechanism. In practical applications, the fixing base 2 is installed on the external structure, the rotating drive mechanism drives the rotating shaft 5 to rotate, and the rotating shaft 5 drives the turntable to rotate. It is also beneficial to the smooth rotation of the turntable, reducing the frictional resistance on the turntable, and when the turntable is subjected to axial pressure, the axial pressure on the turntable is transferred to the spring 3 through the bearing platform 4 and the lifting seat 1, The spring 3 is compressed, and the lift seat 1 drives the bearing platform 4, the turntable and a ball sleeve 6 to move up and down along the rotating shaft 5 synchronously. During this process, the spring 3 can absorb the axial pressure, thereby buffering protection and shock absorption for the turntable. Due to the effect of noise reduction, the rotating shaft 5 can guide and limit the lifting of the lifting seat 1 , thereby improving the lifting and lowering stability of the lifting seat 1 . By arranging the ball sleeve 6 , the rotating shaft 5 can not only rotate relative to the fixed base 2 and the lifting base 1 , but also can move up and down relative to the fixed base 2 and the lifting base 1 . The structure of the spring 3 is simple in structure and good in working stability. It can not only drive the turntable to rotate and function as a transmission component, but also buffer and protect the turntable to avoid damage due to hard impact collision.

In this embodiment, the diameter of the connecting head 11 is larger than the diameter of the first through hole 7; the bottom end of the rotating shaft 5 passes through the two ball sleeves 6 in sequence, so as to realize the assembly of the rotating shaft 5, the fixed seat 2 and the lifting seat 1; the The structural design prevents the rotating shaft 5 from being easily separated from the fixed seat 2 and the lifting seat 1, thereby improving the structural stability and working stability of the utility model.

In this embodiment, the bottom end of the rotating shaft 5 is provided with a connecting key 14, and the rotating shaft 5 is keyed to the output end of the rotating drive mechanism via the connecting key 14, which facilitates the drive connection between the rotating shaft 5 and the rotating drive mechanism, and has good transmission stability.

In this embodiment, a positioning portion 15 is protruded on the bottom surface of the fixing base 2; The positional accuracy and stability of the external structure enable the fixing base 2 to be firmly connected to the external structure.

In this embodiment, the fixing base 2 is provided with a plurality of locking holes 16 in the circumferential direction; a plurality of screws are respectively threaded with the plurality of locking holes 16 to firmly lock the fixing base 2 on the external structure .

In this embodiment, the diameter of the ball 13 is 5 mm to 10 mm. Preferably, the diameter of the ball 13 is 7 mm, which ensures the strength of the ball 13; , the bearing negative pressure is large; the sleeve body 12 is made of aluminum alloy material, which has the characteristics of high strength and light weight.

All the technical features in this embodiment can be freely combined according to actual needs.

The above-mentioned embodiments are the preferred implementation solutions of the present invention. In addition, the present invention can also be realized in other ways, and any obvious replacements are within the protection scope of the present invention without departing from the concept of the technical solution. Inside.

Claims (5)

1. A spring structure is characterized in that: it comprises a lifting seat, a fixing seat, a spring, a bearing platform, a rotating shaft and two ball sleeves, the middle part of the lifting seat is provided with a first through hole, and the middle part of the fixing seat is provided with a first through hole. There is a second via hole, the first via hole and the second via hole are coaxially arranged, a limit step is protruded from the side of the lift seat close to the fixed seat, and the side of the lift seat away from the limit step is connected to the bearing. The bearing platform is rotatably connected with a plurality of rolling balls, the first through hole penetrates the limit step and the bearing platform, and the top end of the spring is sleeved outside the limit step and is clamped with the limit step, so The bottom end of the spring is connected with the fixed seat, one ball sleeve is embedded in the first through hole, the other ball sleeve is embedded in the second through hole, the rotating shaft passes through the two ball sleeves in sequence, and the spring sleeve is embedded in the second through hole. Outside the rotating shaft, the top end of the rotating shaft is provided with a connecting head, the connecting head is located above the bearing platform, and the ball sleeve includes a sleeve body embedded in the first through hole or the second through hole and is evenly rotated and connected. The plurality of balls on the inner wall of the sleeve body roll against the rotating shaft. 2 . The spring structure according to claim 1 , wherein the diameter of the connecting head is larger than the diameter of the first via hole. 3 . 3 . The spring structure according to claim 1 , wherein the bottom end of the rotating shaft is provided with a connecting key. 4 . 4 . The spring structure according to claim 1 , wherein a positioning portion is protruded from the bottom surface of the fixing seat. 5 . 5 . The spring structure according to claim 1 , wherein a plurality of locking holes are arranged in the circumferential direction of the fixing seat. 6 .

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