CN114016841B - Floor spring assembly with buffering function - Google Patents

Abstract

The invention belongs to the field of floor springs, and particularly relates to a floor spring assembly with a buffering effect. It includes an upper spring mechanism and a lower spring mechanism. The upper spring mechanism installed at the upper end of the door frame is connected to the upper end of the glass door, and is installed at the lower end of the door frame. The lower spring mechanism is connected to the lower end of the glass door; the glass door is opened and closed around the vertical center line connecting the upper and lower connection points; due to the hinge point of the ring sleeve B and the U seat and the inclination of the center of the cross universal joint in the lower spring mechanism The moment of the force between the connection line and the collision point on the glass door is greater than the moment between the force on the collision point on the glass door and the rotating axis B on the floor spring. Therefore, when the glass door is violently impacted, the ring sleeve B and U The buffering swing of the hinge point of the seat and the inclined line connecting the center of the cross universal joint in the lower spring mechanism can effectively buffer the impact of the glass door, effectively reducing or avoiding the collision of the glass door, people, floor springs and objects. Impact damage.

Description

A floor spring component with a buffering effect

Technical field

The invention belongs to the field of floor springs, and in particular relates to a floor spring assembly with a buffering effect.

Background technique

The floor spring is a hydraulic door closer, but the device that compresses the spring is a worm gear instead of a gear or rack. Because the worm gear can rotate forward and reverse, the floor spring can be used for doors that open in two directions, while the door closer can only be used for doors that open in one direction. The basic configuration of the floor spring is the sky axis and the earth axis (or foot). The sky shaft is an accessory that connects the door frame and the door leaf at the upper part. It consists of a latch-type shaft fixed on the door leaf that can be adjusted with bolts and a bushing fixed on the door leaf. The sky axis and the ground axis can be applied to almost all wooden, steel, aluminum alloy doors and frameless glass doors using glass door clips.

Glass doors equipped with floor springs are often bumped by people who are not paying attention due to their transparency, resulting in damage to the glass door, people, objects or the floor spring. Warning slogans are pasted on the glass doors of many stores or shops to attract the attention of people entering and exiting the door. However, due to the limited area of the warning slogans, their warning effect is poor.

The present invention designs a floor spring assembly with a buffering effect to solve the problem that when a glass door equipped with a floor spring is hit, the glass door, people, objects and the floor spring are damaged.

Contents of the invention

In order to solve the above-mentioned defects in the prior art, the present invention discloses a floor spring assembly with a buffering effect, which is achieved by adopting the following technical solutions.

In the description of the present invention, it should be noted that the terms "inside", "outside", "upper", "lower", etc. indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, or the product of the invention Orientations or positional relationships that are customarily placed during use are only for the convenience of describing the present invention and simplifying the description. They do not indicate or imply that the equipment or components referred to must have a specific orientation, be constructed or operated in a specific orientation, and therefore cannot be understood. are limitations of the present invention. In addition, the terms "first", "second", etc. are only used to differentiate descriptions and are not to be understood as indicating or implying relative importance.

A floor spring assembly with a buffering effect, which includes an upper spring mechanism and a lower spring mechanism. The upper spring mechanism installed at the upper end of the door frame is connected to the upper end of the glass door, and the lower spring mechanism installed at the lower end of the door frame is connected to the lower end of the glass door. ;The glass door opens and closes around the vertical center line connecting the upper and lower connection points.

The above-mentioned lower spring mechanism includes a floor spring, a rotating shaft B, a cross universal joint, and a rotating shaft C. The existing floor spring is installed at the lower end of the door frame; the upper end of the rotating shaft B of the floor spring is installed with a bolt through the cross universal joint and the glass door. The U-shaped ferrule is nested and connected at the lower end.

The above-mentioned upper spring mechanism includes an outer shell, an inner shell, annular sleeve A, a slider, a clamping block, a compression spring, a square shaft, a connecting rod, and a U-shaped ferrule. The outer shell is fixed on the upper end of the door frame; the circular groove on the inner shell There is a ring sleeve A that rotates with a 90-degree rotation amplitude, and a square shaft is fixed in the ring sleeve A; the inner shell is fixed in the outer shell through the existing leveling technology to ensure that the square shaft is in a vertical state; There is a slider in the chute that slides radially along the ring sleeve A; the round head block installed at the end of the slider cooperates with the drive groove on the outer wall of the ring sleeve A to ensure that the ring sleeve A does not move during the normal opening and closing movement of the glass door. Produces rotation; a spring is installed in the chute to reset the slider; the lower end of the square shaft is hinged with a connecting rod that swings in the vertical plane, and the ball hinge at the end of the connecting rod is connected with a U that is nested with the upper end of the glass door through bolts type card holder.

As a further improvement of this technology, the above-mentioned outer shell is fixed in the installation groove at the upper end of the door frame; a swing groove is provided on the inner wall of the circular groove of the inner shell, and the limit swing block installed on the outer wall of the ring sleeve A swings around the central axis of the ring sleeve A in the swing groove; the middle part of the ring sleeve A is a square groove, and the square shaft is fixedly installed in the square groove; one end of the connecting rod is hinged with the ring sleeve B nested on the square shaft through a U seat. The cooperation between the ring sleeve B and the square shaft facilitates the disassembly and packaging of the hinge point of the square shaft and the connecting rod. The U-shaped ferrule is spherically connected to the connecting rod through the rotating shaft A installed on it. Rotating axis A increases the moving distance between the glass door and the connecting rod to a certain extent, ensuring that the movement of the glass door interferes with the connecting rod.

As a further improvement of this technology, the above-mentioned floor spring is installed in the lower end installation groove in the door frame; the cross universal joint is connected to the corresponding U-shaped ferrule through the rotating shaft C; the compression spring is a compression spring; one end of the compression spring is connected to the end face of the slider , the other end is connected to the inner wall of the chute. The rotating axis C increases the distance between the glass door, the cross joint and the door frame to a certain extent, ensuring that the movement of the glass door is not interfered by the door frame and the cross joint.

As a further improvement of this technology, the door frame installation groove where the above-mentioned shell is located is installed with a filling block that hides the shell and does not interfere with the movement of the connecting rod; the door frame installation groove where the floor spring is located is installed with a hidden floor spring that does not interfere with the movement of the cross universal joint of filler blocks.

As a further improvement of this technology, the inner wall of the above-mentioned driving groove is a driving arc surface with an arc radius that gradually increases from the middle of the inner wall of the driving groove around the central axis of the ring sleeve A to both sides and cooperates with the clamping block. The middle part of the driving arc surface has The concave arc-shaped slot matched with the clamping block makes the ring sleeve A need to overcome a large resistance to rotate relative to the inner shell, thus ensuring that the ring sleeve A will not be easily rotated through the connecting rod during the normal opening and closing process of the glass door. This ensures the normal opening and closing movement of the glass door.

Compared with traditional floor springs, the upper spring mechanism in the present invention plays the role of a traditional sky axis during the normal opening and closing process of the glass door, and the lower spring mechanism plays the role of a traditional floor spring and ground axis during the normal opening and closing process of the glass door. When the door is hit hard, the glass door will swing bufferly around the hinge point of the ring sleeve B and the U seat and the inclined line connecting the center of the cross universal joint in the lower spring mechanism. Because the force and moment of the hinge point of the ring sleeve B and the U seat and the inclined line connecting the center of the cross universal joint in the lower spring mechanism and the collision point on the glass door are greater than the force and moment on the collision point on the glass door and the floor spring. The moment between the upper rotating axis B, so when the glass door is hit hard, the buffering swing around the hinge point of the ring sleeve B and the U seat and the inclined line connecting the center of the cross universal joint in the lower spring mechanism can effectively damage the glass. It can buffer the impact of the door, effectively reducing or avoiding the impact damage of the glass door, people, floor springs and objects. The invention has simple structure and good use effect.

Description of drawings

Figure 1 is a schematic cross-sectional view of the invention and its cooperation with door frames and glass doors.

Figure 2 is a schematic cross-sectional view of the upper spring mechanism, the glass door and the door frame.

Figure 3 is a schematic cross-sectional view of the lower spring mechanism, the door frame and the glass door.

Figure 4 is a schematic diagram of the upper spring mechanism.

Figure 5 is a schematic cross-sectional view of the upper spring mechanism.

Figure 6 is a schematic diagram of the inner shell and its cross-section.

Figure 7 is a schematic diagram of ring A and its cross-section.

Figure 8 is a schematic diagram of the lower spring mechanism.

The names of the numbers in the figure: 1. Door frame; 2. Glass door; 3. Upper spring mechanism; 4. Shell; 5. Inner shell; 6. Circular groove; 7. Slide; 8. Swing groove; 9. Ring sleeve A; 10. Square slot; 11. Driving slot; 12. Driving arc surface; 13. Clamping slot; 14. Limiting swing block; 15. Slider; 16. Clamping block; 17. Compression spring; 18. Square shaft; 19. Ring sleeve B; 20, U seat; 21, connecting rod; 22, rotating shaft A; 23, U-shaped ferrule; 24, bolt; 25, filling block; 26, lower spring mechanism; 27, floor spring; 28, rotating shaft B ; 29. Cross universal joint; 30. Shaft C.

Detailed ways

The accompanying drawings are schematic diagrams of the implementation of the present invention to facilitate understanding of the operating principles of the structure. The specific product structure and proportional dimensions can be determined according to the use environment and conventional technology.

As shown in Figures 1, 2, and 3, it includes an upper spring mechanism 3 and a lower spring mechanism 26. As shown in Figures 1, 2, and 3, the upper spring mechanism 3 installed at the upper end of the door frame 1 is connected to the upper end of the glass door 2. , the lower spring mechanism 26 installed at the lower end of the door frame 1 is connected to the lower end of the glass door 2; the glass door 2 is opened and closed around the vertical center line connecting the upper and lower connection points.

As shown in Figures 3 and 8, the above-mentioned lower spring mechanism 26 includes a floor spring 27, a rotating shaft B28, a universal joint 29, and a rotating shaft C30. The prior art floor spring 27 is installed at the inner lower end of the door frame 1; the rotating shaft of the floor spring 27 The upper end of B28 is equipped with a U-shaped ferrule 23 that is nestedly connected to the lower end of the glass door 2 through bolts 24 through a cross universal joint 29.

As shown in Figures 4 and 5, the above-mentioned upper spring mechanism 3 includes an outer shell 4, an inner shell 5, an annular sleeve A9, a slider 15, a clamping block 16, a compression spring 17, a square shaft 18, a connecting rod 21, and a U-shaped ferrule. 23. As shown in Figure 2, the outer shell 4 is fixedly mounted on the upper end of the door frame 1; as shown in Figure 5, the circular groove 6 on the inner shell 5 is fitted with a ring sleeve A9 that rotates with a 90-degree rotation amplitude. The square shaft 18 is fixed; as shown in Figure 4, the inner shell 5 is fixed in the outer shell 4 through existing leveling technology to ensure that the square shaft 18 is in a vertical state; as shown in Figures 2, 5, and 6, the circular groove 6. There is a slider 15 in the chute 7 on the inner wall that slides radially along the ring sleeve A9; as shown in Figures 5 and 7, the round head block 16 installed at the end of the slider 15 and the drive groove on the outer wall of the ring sleeve A9 11 to ensure that the ring sleeve A9 will not rotate during the normal opening and closing movement of the glass door 2; a compression spring 17 is installed in the chute 7 to reset the slider 15; as shown in Figures 2 and 4, the lower end of the square shaft 18 The connecting rod 21 is hinged with a connecting rod 21 that swings in the vertical plane. The end of the connecting rod 21 is spherically connected to a U-shaped ferrule 23 that is nestedly connected to the upper end of the glass door 2 through bolts 24.

As shown in Figure 2, the above-mentioned outer shell 4 is fixed in the installation groove at the upper end of the door frame 1; as shown in Figures 5 and 6, a swing groove 8 is provided on the inner wall of the circular groove 6 of the inner shell 5, which is installed on the outside of the ring sleeve A9 The limit swing block 14 of the wall swings around the central axis of the ring sleeve A9 in the swing groove 8; as shown in Figures 5 and 7, the middle part of the ring sleeve A9 is a square groove 10, and the square shaft 18 is fixedly installed in the square groove 10; as shown in Figure 4 As shown in the figure, one end of the connecting rod 21 is hingedly connected to the ring sleeve B19 nested on the square shaft 18 through the U seat 20. The cooperation between the ring sleeve B19 and the square shaft 18 facilitates the disassembly and packaging of the hinge point of the square shaft 18 and the connecting rod 21 . As shown in Figures 2 and 4, the U-shaped ferrule 23 is spherically connected to the connecting rod 21 through the rotating shaft A22 installed thereon. The rotating shaft A22 increases the moving distance between the glass door 2 and the connecting rod 21 to a certain extent, ensuring that the movement of the glass door 2 interferes with the connecting rod 21.

As shown in Figure 3, the above-mentioned floor spring 27 is installed in the installation groove at the lower end of the door frame 1; as shown in Figures 3 and 8, the cross universal joint 29 is connected to the corresponding U-shaped ferrule 23 through the rotating shaft C30; the compression spring 17 is Compression spring; as shown in Figures 2 and 5, one end of the compression spring 17 is connected to the end face of the slider 15, and the other end is connected to the inner wall of the chute 7. The rotating shaft C30 increases the distance between the glass door 2 and the cross joint 29 and the door frame 1 to a certain extent, ensuring that the movement of the glass door 2 is not interfered by the door frame 1 and the cross joint 29.

As shown in Figures 2 and 3, a filling block 25 is installed in the installation groove of the door frame 1 where the housing 4 is located, which hides the housing 4 and does not interfere with the movement of the connecting rod 21; a hidden floor spring is installed in the installation groove of the door frame 1 where the floor spring 27 is located. 27 and does not interfere with the movement of the cross joint 29.

As shown in Figures 5 and 7, the inner wall of the above-mentioned driving groove 11 is a driving arc surface 12 whose arc radius gradually increases from the middle of the inner wall of the driving groove 11 around the central axis of the ring sleeve A9 to both sides and cooperates with the clamping block 16. The middle part of the driving arc surface 12 has a concave arc-shaped slot 13 that cooperates with the clamping block 16, so that the ring sleeve A9 needs to overcome a large resistance to rotate relative to the inner shell 5, thereby ensuring that the glass door 2 will not rotate during the normal opening and closing process. The connecting rod 21 can easily drive the ring sleeve A9 to rotate, thus ensuring the normal opening and closing movement of the glass door 2 .

The floor spring 27 in the present invention adopts existing technology.

The working process of the present invention: in the initial state, the glass door 2 is in a closed state, the limit swing block 14 in the upper spring mechanism 3 is located at the extreme position of one end of the swing slot 8, the clamping block 16 is located in the clamping slot 13, and the compression spring 17 is in compression state, the connecting rod 21 is horizontally parallel to the glass door 2, and the rotating axis A22 is in a vertical state. The rotating shaft C30 in the lower spring mechanism 26 is in a vertical state.

When the glass door 2 installed with the present invention is normally opened or closed, the moment generated by the opening or closing force of the glass door 2 is not enough to overcome the elastic force of the compression spring 17 in the upper spring mechanism 3 and the glass door 2 The upper end drives the ring sleeve A9 to rotate relative to the inner shell 5 through the corresponding U-shaped ferrule 23, the rotating shaft A22, the connecting rod 21 connected with the spherical hinge of the rotating shaft A22, the ring sleeve B19 and the square shaft 18. Therefore, when the glass door 2 is subjected to normal During the normal opening or closing process of the force, the upper end of the glass door 2 drives the rotating shaft A22 through the corresponding U-shaped ferrule 23 to rotate around the central axis of the rotating shaft A22 relative to the connecting rod 21 with the spherical hinge. At the same time, the lower end of the glass door 2 passes through the corresponding U-shaped ferrule. The ferrule 23, the rotating shaft C30 and the cross joint 29 drive the rotating shaft B28 in the floor spring 27 to rotate. At this time, the glass door 2 is opened or closed around the central axis of the rotation axis A22 and the rotation axis B28, and the lower spring mechanism 26 functions as a traditional floor spring 27.

When the glass door 2 installed with the present invention is violently hit by people or objects due to inattention or carelessness of people entering or exiting the door, the moment generated by the impact force on the glass door 2 is enough to overcome the pressure in the upper spring mechanism 3 The elastic force of the spring 17 causes the glass door 2 to rotate relative to the inner shell 5 through the rotating shaft A22, the connecting rod 21 spherically connected to the rotating shaft A22, the ring sleeve B19 and the square shaft 18, so that the glass door 2 rotates around the U seat 20 and the hinge point of the ring sleeve B19 and the inclined center line of the cross universal joint 29 in the lower spring mechanism 26 produce a swing that alleviates the collision impact.

During the swing process of the glass door 2 around the hinge point of the U seat 20 and the ring sleeve B19 and the inclined center of the cross universal joint 29 in the lower spring mechanism 26 to alleviate the impact of the collision, the glass door 2 communicates with the rotating axis A22 through the rotating axis A22 The connecting rod 21 of the ball joint, the U seat 20, the ring sleeve B19 and the square shaft 18 drive the ring sleeve A9 to overcome the pressure of the compression spring 17 and rotate relative to the inner shell 5. The block 16 installed on the slider 15 slides instantly. Out of the slot 13 on the drive slot 11, the clamp block 16 drives the slider 15 to shrink into the chute 7 under the action of the driving arc surface 12 with a gradually increasing radius from the middle to both sides of the drive slot 11, and the pressing spring 17 is With further compression, the ring sleeve A9 drives the swing limiting block 14 to swing in the swing groove 8 .

During the swing process of the glass door 2 around the hinge point of the U base 20 and the ring sleeve B19 and the inclined center of the cross universal joint 29 in the lower spring mechanism 26 to alleviate the impact of the collision, the hinge point of the glass door 2 around the U base 20 and the ring sleeve B19 The lower end of the glass door 2 drives the cross joint 29 to rotate in all directions through the corresponding U-shaped ferrule 23 and the rotating shaft C30. The joint 29 drives the rotation axis B28 of the floor spring 27 in the lower spring mechanism 26 to rotate, and the lower spring mechanism 26 still functions as the traditional floor spring 27 at this time. However, since the hinge point of the ring sleeve B19 and the U seat 20 and the inclined line connecting the center of the cross universal joint 29 in the lower spring mechanism 26 and the collision point on the glass door 2, the force moment is greater than the collision on the glass door 2. Therefore, when the glass door 2 is violently impacted, the hinge point between the ring sleeve B19 and the U base 20 and the center of the cross universal joint 29 in the lower spring mechanism 26 The buffering swing of the inclined connection line can effectively buffer the impact of the glass door 2, and effectively reduce or avoid the collision and impact damage of the glass door 2, people, floor springs 27 and objects.

When the glass door 2 is reset after being subjected to a violent impact, the hinge point of the hand-wrapped ring sleeve B19 and the U base 20 and the inclined line connecting the center of the cross universal joint 29 in the lower spring mechanism 26 are used to cushion the swing of the glass door 2. The hinge point of the sleeve B19 and the U seat 20 and the inclined connection line of the center of the cross universal joint 29 in the lower spring mechanism 26 perform swing reset.

During the swing reset process of the glass door 2 around the hinge point of the ring sleeve B19 and the U seat 20 and the inclined line connecting the center of the cross universal joint 29 in the lower spring mechanism 26, the glass door 2 is spherically hinged with the rotating axis A22 through the rotating axis A22. The connected connecting rod 21, U seat 20, ring sleeve B19 and square shaft 18 drive the ring sleeve A9 to rotate in the opposite direction relative to the inner shell 5. The clamp block 16 installed on the slider 15 moves along the driving arc surface 12 on the driving groove 11. The card slot 13 on the drive slot 11 slides in the direction. Under the joint action of the driving arc surface 12 and the compression spring 17, the clamping block 16 drives the slider 15 to move out of the chute 7, the compression spring 17 releases energy, and the ring sleeve A9 drives the swing limiter 14 to return in the swing groove 8. put.

When the glass door 2 is reset, the blocking block 16 re-enters the blocking slot 13 under the action of the pressing spring 17 .

During the swing reset process of the hinge point of the glass door 2 around the ring sleeve B19 and the U seat 20 and the inclined line connecting the center of the cross universal joint 29 in the lower spring mechanism 26, the hinge point of the ring sleeve B19 and the U seat 20 and The lower end of the glass door 2 is driven by the inclined connection line at the center of the cross universal joint 29 in the lower spring mechanism 26 to swing back and reset through the corresponding U-shaped ferrule 23 and the rotating shaft C30. The cross universal joint 29 is reset and twisted in all directions. 29 drives the rotating shaft B28 of the floor spring 27 to reversely rotate and reset. When the glass door 2 is completely reset, the rotation axis A22, the rotation axis B28 and the rotation axis C30 are located on the concentric axes again.

To sum up, the beneficial effects of the present invention are: the upper spring mechanism 3 in the present invention plays the role of a traditional sky axis during the normal opening and closing process of the glass door 2, and the traditional floor spring 27 plays a ground axis role during the normal opening and closing process of the glass door 2. When the closed glass door 2 is violently impacted, the lower spring mechanism 26 will cause the glass door 2 to generate a buffer around the hinge point of the ring sleeve B19 and the U base 20 and the inclined line connecting the center of the cross universal joint 29 in the lower spring mechanism 26. swing. Because the hinge point of the ring sleeve B19 and the U seat 20 and the inclined connection line of the center of the cross universal joint 29 in the lower spring mechanism 26 and the collision point on the glass door 2 are greater than the moment of the force on the collision point on the glass door 2 The force between the force of the floor spring 27 and the moment between the rotating axis B28 of the floor spring 27. Therefore, when the glass door 2 is violently impacted, the hinge point of the ring sleeve B19 and the U base 20 and the tilt connection of the center of the cross universal joint 29 in the lower spring mechanism 26 The buffering swing of the wire can effectively buffer the impact of the glass door 2, and effectively reduce or avoid collision and impact damage to the glass door 2, people, floor springs 27 and objects.

Claims (2)

1. A floor spring assembly having a cushioning effect, characterized in that: the glass door comprises an upper spring mechanism and a lower spring mechanism, wherein the upper spring mechanism arranged at the inner upper end of a door frame is connected with the upper end of the glass door, and the lower spring mechanism arranged at the inner lower end of the door frame is connected with the lower end of the glass door; the glass door is opened and closed around a vertical central connecting line of the upper connecting point and the lower connecting point;

the lower spring mechanism comprises a ground spring, a rotating shaft B, a cross universal joint and a rotating shaft C, wherein the ground spring is arranged at the inner lower end of the door frame; the upper end of the rotating shaft B of the floor spring is provided with a first U-shaped clamping sleeve which is connected with the lower end of the glass door in a nested manner through a bolt by a cross universal joint;

the upper spring mechanism comprises an outer shell, an inner shell, a ring sleeve A, a sliding block, a clamping block, a pressing spring, a square shaft, a connecting rod and a second U-shaped clamping sleeve, wherein the outer shell is fixedly arranged at the upper end in a door frame; a circular groove on the inner shell is rotationally matched with a ring sleeve A in a 90-degree rotation range, and a square shaft is fixedly arranged in the ring sleeve A; the inner shell is fixedly arranged in the outer shell through a leveling technology, so that the square shaft is ensured to be in a vertical state; a sliding block is arranged in a sliding groove on the inner wall of the circular groove in a radial sliding way along the annular sleeve A; the round head clamping block arranged at the tail end of the sliding block is matched with the driving groove on the outer side wall of the ring sleeve A so as to ensure that the ring sleeve A does not rotate when the glass door is normally opened and closed; a pressing spring for resetting the sliding block is arranged in the sliding groove; the lower end of the square shaft is hinged with a connecting rod swinging in a vertical plane, and the tail end of the connecting rod is in spherical hinge connection with a second U-shaped clamping sleeve which is nested and connected with the upper end of the glass door through a bolt;

the shell is fixedly arranged in a mounting groove at the upper end in the door frame; a swinging groove is formed in the inner wall of the circular groove of the inner shell, and a swinging limiting block arranged on the outer side wall of the annular sleeve A swings in the swinging groove around the center axis of the annular sleeve A; the middle part of the ring sleeve A is provided with a square groove, and a square shaft is fixedly arranged in the square groove; one end of the connecting rod is hinged with a ring sleeve B nested on the square shaft through a U seat; the second U-shaped cutting sleeve is connected with the connecting rod through a rotating shaft A arranged on the second U-shaped cutting sleeve in a spherical hinge manner;

the floor spring is arranged in the mounting groove at the lower end in the door frame; the cross universal joint is connected with the first U-shaped clamping sleeve through a rotating shaft C; the pressing spring is a compression spring; one end of the pressing spring is connected with the end face of the sliding block, and the other end of the pressing spring is connected with the inner wall of the sliding groove;

the inner side wall of the driving groove is a driving cambered surface with the arc radius gradually increasing from the middle part of the inner side wall of the driving groove to two sides around the center axis of the ring sleeve A and matched with the clamping block, and the middle part of the driving cambered surface is provided with a concave arc-shaped clamping groove matched with the clamping block, so that the ring sleeve A can rotate relative to the inner shell only by overcoming larger resistance, and the ring sleeve A is prevented from being easily driven to rotate by a connecting rod in the normal opening and closing process of the glass door;

in the initial state, the glass door is in a closed state, a swing limiting block in the upper spring mechanism is positioned at the limit position of one end of a swing groove, a clamping block is positioned in a clamping groove, a pressing spring is in a compressed state, a connecting rod is horizontally parallel to the glass door, a rotating shaft A is in a vertical state, and a rotating shaft C in the lower spring mechanism is in a vertical state;

when the glass door is normally opened or closed, the moment generated by the action force of the opening or closing of the glass door is insufficient to overcome the elasticity of the pressing spring in the upper spring mechanism, so that the upper end of the glass door rotates relative to the inner shell through the second U-shaped clamping sleeve, the rotating shaft A, the connecting rod connected with the spherical hinge of the rotating shaft A, the annular sleeve B and the square shaft driving annular sleeve A, and therefore in the normal opening or closing process of the glass door under the normal action force, the upper end of the glass door drives the rotating shaft A to rotate relative to the connecting rod hinged with the rotating shaft A around the center axis of the rotating shaft A through the second U-shaped clamping sleeve, and simultaneously, the lower end of the glass door drives the rotating shaft B in the ground spring to rotate through the first U-shaped clamping sleeve, the rotating shaft C and the cross universal joint, and at the moment, the glass door is opened or closed around the center axes of the rotating shaft A and the rotating shaft B;

when the door surface of the glass door is impacted by people or objects suddenly because of the carelessness or the intention of people entering and exiting the door, the moment generated by the impact force of the glass door is enough to overcome the elasticity of the pressing spring in the upper spring mechanism, so that the glass door rotates relative to the inner shell through the rotating shaft A, the connecting rod connected with the spherical hinge of the rotating shaft A, the annular sleeve B and the square shaft driving annular sleeve A, and the glass door swings for relieving collision impact around the connecting line between the hinge point of the U seat and the annular sleeve B and the inclined center of the cross universal joint in the lower spring mechanism;

the clamping block arranged on the sliding block instantaneously slides out of the clamping groove on the driving groove, the clamping block drives the sliding block to shrink inwards in the sliding groove under the action of a driving cambered surface with the radius gradually increased from the middle part to the two sides on the driving groove, the pressing spring is further compressed, and the annular sleeve A drives the swing limiting block to swing in the swing groove;

in the swing process of the glass door for relieving collision impact by surrounding the hinging point of the U seat and the annular sleeve B and the inclined central connecting line of the cross universal joint in the lower spring mechanism, the lower end of the glass door for relieving collision impact swing is driven by the first U-shaped clamping sleeve and the rotating shaft C to carry out universal torsion by surrounding the hinging point of the U seat and the annular sleeve B and the inclined central connecting line of the cross universal joint in the lower spring mechanism, and the rotating shaft B28 of the ground spring in the lower spring mechanism is driven by the cross universal joint to rotate;

when the glass door is reset after being impacted violently, the glass door which is held by the hand and swings in a buffering way around the hinging point of the ring sleeve B and the U seat and the inclined connecting line of the center of the cross universal joint in the lower spring mechanism swings back and resets around the hinging point of the ring sleeve B and the U seat and the inclined connecting line of the center of the cross universal joint in the lower spring mechanism;

in the process of swinging back and resetting the glass door around the hinging point of the ring sleeve B and the U seat and the inclined connecting line of the center of the cross universal joint in the lower spring mechanism, the glass door reversely rotates relative to the inner shell through the rotating shaft A, the connecting rod connected with the spherical hinge of the rotating shaft A, the U seat, the ring sleeve B and the square shaft driving ring sleeve A, and a clamping block arranged on the sliding block slides along a driving arc surface on the driving groove towards the clamping groove direction on the driving groove; under the combined action of the driving cambered surface and the pressing spring, the clamping block drives the sliding block to move outwards of the sliding groove, the pressing spring releases energy, and the annular sleeve A drives the swing limiting block to swing backwards in the swing groove;

when the glass door is reset, the clamping block reenters the clamping groove under the action of the pressing spring;

in the process of returning and resetting the glass door around the hinging point of the ring sleeve B and the U seat and the inclined connecting line of the center of the cross universal joint in the lower spring mechanism, the lower end of the glass door which returns and resets around the hinging point of the ring sleeve B and the U seat and the inclined connecting line of the center of the cross universal joint in the lower spring mechanism drives the cross universal joint to perform universal resetting torsion through the first U-shaped clamping sleeve and the rotating shaft C, and the cross universal joint drives the rotating shaft B of the ground spring to reversely rotate and reset; when the glass door is completely reset, the rotating shaft A, the rotating shaft B and the rotating shaft C are positioned in the concentric axis again.

2. A floor spring assembly with cushioning effect as set forth in claim 1, wherein: a filling block which is used for hiding the shell and does not interfere the movement of the connecting rod is arranged in a mounting groove at the upper end of the door frame where the shell is positioned; and a filling block which is hidden in the floor spring and does not interfere with the movement of the cross universal joint is arranged in the mounting groove at the lower end in the door frame where the floor spring is positioned.