CN215803991U - Floor spring - Google Patents

Abstract

The utility model discloses a floor spring which comprises a shell, a reset mechanism and a cam mechanism, wherein the reset mechanism comprises a translation seat and a first spring for driving the translation seat to reset; the cam mechanism is located between first round and the second round, including the coaxial primary shaft that sets up, first cam and second cam, the primary shaft rotates with the casing to be connected, first cam has first cambered surface and the second cambered surface that the symmetry set up, first cambered surface is provided with first concave cambered surface, first concave cambered surface and first round butt location, the second cam has third cambered surface and the fourth cambered surface that the symmetry set up, third cambered surface and fourth cambered surface all increase gradually with the distance of the axis of primary shaft, be provided with the unchangeable fifth cambered surface of interval with the axis of primary shaft between the one side that the distance of the axis of third cambered surface and fourth cambered surface and primary shaft reduces. The floor spring can be stopped randomly within a certain angle range.

Description

Floor spring

Technical Field

The utility model relates to the technical field of door leaf installation accessories, in particular to a floor spring.

Background

The floor spring is a hydraulic door closer, except that the means for compressing the spring is a cam rather than a rack and pinion. Since the cam can rotate in the forward and reverse directions, the floor spring can be used for a door which is opened in both directions.

Conventional ground spring includes cam, translation seat and spring, and the cam rotation can drive the translation seat and remove to, translation seat compression spring, and the spring of compressed can drive translation seat antiport, thereby, the translation seat drives cam antiport, and then, makes ground spring reset.

Conventional floor springs can only be stopped at 0 and 90.

In some use environments of the door leaf, the door leaf needs to be capable of stopping at will within a certain angle range.

However, conventional floor springs do not achieve random stops over a range of angles.

SUMMERY OF THE UTILITY MODEL

The present invention is directed to solving at least one of the problems of the prior art. Therefore, the utility model provides a floor spring which can be stopped randomly within a certain angle range.

According to a floor spring of an embodiment of a first aspect of the present invention, a housing has a receiving cavity; the reset mechanism is arranged in the accommodating cavity and comprises a translation seat and a first spring for driving the translation seat to reset, a first wheel and a second wheel are arranged on the translation seat, the first wheel is positioned on one side of the translation seat, which is far away from the first spring, and the second wheel is positioned on one side of the translation seat, which is close to the first spring; the cam mechanism is positioned between the first wheel and the second wheel and comprises a first shaft, a first cam and a second cam which are coaxially arranged, the first shaft is rotatably connected with the machine shell, the outer surface of the first wheel is abutted with the outer surface of the first cam, the first cam is provided with a first cambered surface and a second cambered surface which are symmetrically arranged, the first cambered surface is provided with a first concave cambered surface, the first concave cambered surface is abutted and positioned with the first wheel, the outer surface of the second wheel is abutted and positioned with the outer surface of the second cam, the second cam is provided with a third cambered surface and a fourth cambered surface which are symmetrically arranged, the distance between the third cambered surface and the fourth cambered surface and the axial line of the first shaft is gradually increased, and a fifth cambered surface with constant distance with the axis of the first shaft is arranged between the third cambered surface and the side, with the distance between the fourth cambered surface and the axis of the first shaft reduced, of the fifth cambered surface.

According to the embodiment of the utility model, the floor spring has at least the following beneficial effects: through setting up canceling release mechanical system holding the chamber, canceling release mechanical system includes the translation seat, drives the first spring that the translation seat resets to, elasticity through compression or tensile first spring and production can promote the translation seat and reset, and then, for the reset of ground spring provides power, in addition, be provided with first wheel and second wheel on the translation seat, first wheel is located the one side that the first spring was kept away from to the translation seat, the second wheel is located the one side that the translation seat is close to first spring, thereby, the impetus of the translation seat translation that promotion that first wheel and second wheel provided.

Simultaneously, through setting up cam mechanism, cam mechanism includes the primary shaft of coaxial setting, first cam and second cam, the primary shaft rotates with the casing to be connected, thereby, make the casing can support the primary shaft, avoid cam mechanism to remove, in addition, the surface of first round and the surface butt of first cam, first cam has first cambered surface and the second cambered surface that the symmetry set up, first cambered surface is provided with first concave cambered surface, first concave cambered surface and first round butt location, thereby, make floor spring can pause at a certain angle, and then, the door leaf can pause when the door leaf is closed to the convenience.

Furthermore, the surface of second wheel and the surface butt of second cam, the second cam has third cambered surface and the fourth cambered surface that the symmetry set up, third cambered surface and fourth cambered surface all increase gradually with the distance of the axis of primary shaft, thereby, when the second cam rotates, third cambered surface or fourth cambered surface and second wheel butt, make the second cam can drive the translation seat and remove, and then, the translation seat removes and can drive first spring compression or tensile, make first spring can produce the elasticity that promotes the translation seat and reset, make the floor spring reset.

In addition, a fifth cambered surface with a constant distance from the axis of the first shaft is arranged between the third cambered surface and the side, with the distance from the axis of the first shaft to the side, with the distance from the third cambered surface to the axis of the first shaft being reduced, of the fourth cambered surface.

According to some embodiments of the utility model, the first cambered surface is further provided with a second concave cambered surface, and the second concave cambered surface is abutted and positioned with the first wheel.

The beneficial results are: through setting up the concave cambered surface of second at first cambered surface, the concave cambered surface of second is fixed a position with first round butt to, make the floor spring can pause at an angle outside the angle of closing the door, and then, make things convenient for the door leaf to pause after opening the door.

According to some embodiments of the present invention, the translation seat is further provided with a third wheel, the third wheel is located on one side of the translation seat away from the first spring, the first wheel and the third wheel are symmetrically arranged along a line connecting a circle center of the second wheel and an axis of the first shaft, the second arc surface is provided with a third concave arc surface, and the third concave arc surface and the third wheel, and the first concave arc surface and the first wheel are synchronously abutted and positioned.

The beneficial results are: through set up the third wheel on the translation seat, the third wheel is located the translation seat and keeps away from one side of first spring, first wheel and third wheel set up along the line symmetry of the centre of a circle of second wheel and the axis of primary shaft, the second cambered surface sets up the concave cambered surface of third, the concave cambered surface of third and third wheel, the synchronous butt location of first concave cambered surface and first wheel to, first wheel and third wheel are to two butt location of first cam respectively, and then, make the pause state of floor spring more stable.

According to some embodiments of the utility model, the second cambered surface is further provided with a fourth concave cambered surface, and the fourth concave cambered surface is positioned in abutment with the third wheel.

The beneficial results are: through setting up the fourth concave cambered surface at the second cambered surface, the fourth concave cambered surface is fixed a position with the third wheel butt to, make the floor spring can pause at an angle outside the angle of closing the door, and then, make things convenient for the door leaf to pause after opening the door.

According to some embodiments of the utility model, the translation seat is provided with a first sliding groove for accommodating the first shaft, and the first sliding groove extends along the moving direction of the translation seat.

The beneficial results are: through set up the first spout of holding primary shaft at the translation seat, first spout extends the setting along the moving direction of translation seat to, first spout and primary shaft cooperation are spacing, and then, make the slip of translation seat more steady.

According to some embodiments of the utility model, the second wheel is fixedly connected to the translation stage.

The beneficial results are: through taking turns second and translation seat fixed connection to, increase the frictional resistance between second wheel and the first cam, make the resistance when the second wheel slides on the fifth cambered surface bigger, and then, make the second wheel pause on the fifth cambered surface more steady.

According to some embodiments of the utility model, the first wheel is rotatably connected to the translation stage.

The beneficial results are: through rotating first round and translation seat and being connected to, reduce the frictional resistance between first round and the second cam, and then, make things convenient for first spring to drive translation seat and reset.

According to some embodiments of the utility model, the translating carriage comprises a first plate and a second plate arranged in parallel, the first wheel, the second wheel, the first cam and the second cam all being located between the first plate and the second plate.

The beneficial results are: through setting up the translation seat into parallel first board and second board, first wheel, second wheel, first cam and second cam all are located between first board and the second board to, make the atress of translation seat more balanced, and then, make the removal of translation seat more steady.

According to some embodiments of the utility model, the return mechanism further includes a first piston and a connecting rod connecting the first piston and the translational seat, the accommodating cavity includes a first cavity and a second cavity which are communicated, the first cavity accommodates the translational seat to slide, the second cavity accommodates the first piston to slide, the first spring is located between the first piston and the translational seat, one end of the first spring is connected to the first piston, and the other end of the first spring is connected to a cavity wall of the second cavity.

The beneficial results are: through setting up first piston at canceling release mechanical system, connect the connecting rod of first piston and translation seat, it has first chamber and the second chamber of intercommunication to hold the chamber, first chamber holding translation seat slides, the first piston of second chamber holding slides, thereby, the translation seat can drive first piston and slide at the second chamber, in addition, first spring is located between first piston and the translation seat, first piston is connected to the one end of first spring, the chamber wall of second chamber is connected to the other end of first spring, thereby, first piston removes and can compress or tensile first spring, make things convenient for first spring to drive the translation seat and reset.

According to some embodiments of the utility model, the housing includes a housing and a cover having a mounting hole that receives the first shaft.

The beneficial results are: through setting up the casing into casing and lid, the lid has the mounting hole of holding primary shaft to, make things convenient for dismouting ground spring.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

FIG. 1 is a schematic structural diagram of a floor spring according to an embodiment of the present invention;

FIG. 2 is a sectional view A-A shown in FIG. 1;

fig. 3 is a top view of the reset mechanism and cam mechanism shown in fig. 2.

Reference numerals: 100-machine shell, 110-containing cavity, 120-reset mechanism, 130-translation seat, 140-first spring, 150-first wheel, 160-second wheel, 170-cam mechanism, 180-first shaft, 190-first cam, 200-second cam, 210-first cambered surface, 220-second cambered surface, 230-first concave cambered surface, 240-third cambered surface and 250-fourth cambered surface, 260-fifth cambered surface, 270-second concave cambered surface, 280-third wheel, 290-third concave cambered surface, 300-fourth concave cambered surface, 310-first sliding groove, 320-first plate, 330-second plate, 340-first piston, 350-connecting rod, 360-first cavity, 370-second cavity, 380-shell, 390-cover body and 400-mounting hole.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.

In the description of the present invention, it should be understood that the orientation or positional relationship referred to in the description of the orientation, such as the upper, lower, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does 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 thus, should not be construed as limiting the present invention.

In the description of the present invention, the meaning of a plurality of means is one or more, the meaning of a plurality of means is two or more, and larger, smaller, larger, etc. are understood as excluding the number, and larger, smaller, inner, etc. are understood as including the number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

A floor spring according to an embodiment of the present invention will be described with reference to the accompanying drawings.

Referring to fig. 1, 2 and 3, a floor spring according to an embodiment of the present invention includes a housing 100, a return mechanism 120 and a cam mechanism 170.

For the casing 100, the casing 100 includes a housing 380 and a cover 390, the casing 100 has a receiving cavity 110, and the receiving cavity 110 includes a first cavity 360 and a second cavity 370 which are communicated.

For the resetting mechanism 120, the resetting mechanism 120 is disposed in the accommodating cavity 110, the resetting mechanism 120 includes a translational seat 130 and a first spring 140 for driving the translational seat 130 to reset, a first wheel 150 and a second wheel 160 are disposed on the translational seat 130, the first wheel 150 is located on one side of the translational seat 130 away from the first spring 140, and the second wheel 160 is located on one side of the translational seat 130 close to the first spring 140.

In this embodiment, the reset mechanism 120 is disposed in the accommodating cavity 110, the reset mechanism 120 includes a translation seat 130 and a first spring 140 for driving the translation seat 130 to reset, so that the elastic force generated by compressing or stretching the first spring 140 can push the translation seat 130 to reset, and further, power is provided for resetting the floor spring, in addition, a first wheel 150 and a second wheel 160 are disposed on the translation seat 130, the first wheel 150 is located on one side of the translation seat 130 away from the first spring 140, and the second wheel 160 is located on one side of the translation seat 130 close to the first spring 140, so that the first wheel 150 and the second wheel 160 provide a force point for pushing the translation seat 130 to translate.

In some specific embodiments, the reset mechanism 120 further includes a first piston 340, and a connecting rod 350 connecting the first piston 340 and the translational seat 130, wherein the first chamber 360 accommodates the translational seat 130 to slide, the second chamber 370 accommodates the first piston 340 to slide, the first spring 140 is located between the first piston 340 and the translational seat 130, one end of the first spring 140 is connected to the first piston 340, and the other end of the first spring 140 is connected to the wall of the second chamber 370.

In this embodiment, the first piston 340 and the connecting rod 350 connecting the first piston 340 and the translational seat 130 are disposed on the reset mechanism 120, the first cavity 360 accommodates the translational seat 130 to slide, the second cavity 370 accommodates the first piston 340 to slide, so that the translational seat 130 can drive the first piston 340 to slide in the second cavity 370, in addition, the first spring 140 is located between the first piston 340 and the translational seat 130, one end of the first spring 140 is connected to the first piston 340, and the other end of the first spring 140 is connected to the cavity wall of the second cavity 370, so that the first piston 340 can move to compress or stretch the first spring 140, and the first spring 140 can drive the translational seat 130 to reset conveniently.

For the cam mechanism 170, the cam mechanism 170 is located between the first wheel 150 and the second wheel 160, the cam mechanism 170 includes a first shaft 180, a first cam 190 and a second cam 200 which are coaxially arranged, the first shaft 180 is rotatably connected with the housing 100, the outer surface of the first wheel 150 abuts against the outer surface of the first cam 190, the first cam 190 has a first arc surface 210 and a second arc surface 220 which are symmetrically arranged, the first arc surface 210 is provided with a first concave arc surface 230, the first concave arc surface 230 abuts against the first wheel 150 for positioning, the outer surface of the second wheel 160 abuts against the outer surface of the second cam 200, the second cam 200 has a third arc surface 240 and a fourth arc surface 250 which are symmetrically arranged, the distance between the third arc surface 240 and the fourth arc surface 250 and the axis of the first shaft 180 gradually increases, a fifth cambered surface 260 with a constant distance from the axis of the first shaft 180 is arranged between the third cambered surface 240 and the side, at which the distance from the axis of the first shaft 180 is reduced, of the fourth cambered surface 250.

This embodiment is through setting up cam mechanism 170, cam mechanism 170 includes coaxial setting's the first axle 180, first cam 190 and second cam 200, the first axle 180 rotates with casing 100 to be connected, thereby, make casing 100 can support the first axle 180, avoid cam mechanism 170 to remove, in addition, the surface of first round 150 and the surface butt of first cam 190, first cam 190 has first cambered surface 210 and the second cambered surface 220 of symmetry setting, first cambered surface 210 is provided with first concave cambered surface 230, first concave cambered surface 230 and the first round 150 butt location, thereby, make floor spring can pause at a certain angle, and then, the door leaf can pause when the door leaf is closed to the convenience.

Furthermore, the surface of second wheel 160 and the surface butt of second cam 200, second cam 200 has third cambered surface 240 and the fourth cambered surface 250 of symmetry setting, third cambered surface 240 and fourth cambered surface 250 all increase gradually with the distance of the axis of primary shaft 180, thereby, when second cam 200 rotates, third cambered surface 240 or fourth cambered surface 250 and second wheel 160 butt, make second cam 200 can drive translation seat 130 to remove, and then, translation seat 130 removes and can drive first spring 140 compression or tensile, make first spring 140 can produce the elasticity that promotes translation seat 130 and reset, make the floor spring reset.

In addition, a fifth cambered surface 260 with constant distance from the axis of the first shaft 180 is arranged between the sides, with the distance from the axis of the first shaft 180, of the third cambered surface 240 and the fourth cambered surface 250 being reduced, it will be appreciated that, when the third cambered surface 240 or the fourth cambered surface 250 abuts against the second wheel 160 at a position where the distance from the axis of the first shaft 180 is minimum, the translation seat 130 does not compress or stretch the first spring 140, therefore, the first spring 140 does not push the translational seat 130 to return, the translational seat 130 does not move, when the fifth cambered surface 260 abuts against the second wheel 160, because the distance between the fifth cambered surface 260 and the axis of the first shaft 180 is constant, the translation base 130 does not move, the first spring 140 does not push the translation base 130 to reset, therefore, the floor spring can be stopped at will in the process that the second wheel 160 is abutted and slid on the fifth cambered surface 260, and therefore the effect that the floor spring is stopped at will in a certain angle range is achieved.

In some specific embodiments, the first arc surface 210 is further provided with a second concave arc surface 270, and the second concave arc surface 270 is positioned in abutment with the first wheel 150.

This embodiment is through setting up second concave cambered surface 270 at first cambered surface 210, and second concave cambered surface 270 and first round 150 butt location to, make the floor spring can pause at an angle outside the angle of closing the door, and then, make things convenient for the door leaf to pause after opening the door.

In some specific embodiments, the translating seat 130 is further provided with a third wheel 280, the third wheel 280 is located on a side of the translating seat 130 away from the first spring 140, the first wheel 150 and the third wheel 280 are symmetrically arranged along a connection line between a circle center of the second wheel 160 and an axis of the first shaft 180, the second arc surface 220 is provided with a third concave arc surface 290, and the third concave arc surface 290, the third wheel 280, the first concave arc surface 230 and the first wheel 150 are synchronously abutted and positioned.

In the embodiment, the third wheel 280 is arranged on the translation seat 130, the third wheel 280 is positioned on one side of the translation seat 130 far away from the first spring 140, the first wheel 150 and the third wheel 280 are symmetrically arranged along the line connecting the circle center of the second wheel 160 and the axis of the first shaft 180, the second arc surface 220 is provided with the third concave arc surface 290, and the third concave arc surface 290, the third wheel 280, the first concave arc surface 230 and the first wheel 150 are synchronously abutted and positioned, so that the first wheel 150 and the third wheel 280 are respectively abutted and positioned on two points of the first cam 190, and further, the stop state of the floor spring is more stable.

Further, the second arc surface 220 is further provided with a fourth concave arc surface 300, and the fourth concave arc surface 300 is abutted and positioned with the third wheel 280.

This embodiment is through setting up fourth concave cambered surface 300 at second cambered surface 220, and fourth concave cambered surface 300 and the location of third 280 butt to, make the floor spring can pause at an angle outside the angle of closing the door, and then, make things convenient for the door leaf to pause after opening the door.

In some embodiments, the translation seat 130 is provided with a first sliding slot 310 for receiving the first shaft 180, and the first sliding slot 310 extends along the moving direction of the translation seat 130.

In this embodiment, the first sliding groove 310 accommodating the first shaft 180 is disposed on the translation seat 130, and the first sliding groove 310 extends along the moving direction of the translation seat 130, so that the first sliding groove 310 and the first shaft 180 are matched with each other for limitation, and further, the sliding of the translation seat 130 is more stable.

In some embodiments, the second wheel 160 is fixedly coupled to the translation stage 130.

The second wheel 160 is fixedly connected with the translation seat 130, so that the frictional resistance between the second wheel 160 and the first cam 190 is increased, the resistance of the second wheel 160 sliding on the fifth cambered surface 260 is larger, and the second wheel 160 is more stable in stopping on the fifth cambered surface 260.

In some embodiments, the first wheel 150 is rotatably coupled to the translation stage 130.

The first wheel 150 is rotatably connected to the translation base 130, so that the frictional resistance between the first wheel 150 and the second cam 200 is reduced, and the first spring 140 is convenient to drive the translation base 130 to reset.

In some specific embodiments, the translation stage 130 includes a first plate 320 and a second plate 330 arranged in parallel, and the first wheel 150, the second wheel 160, the first cam 190, and the second cam 200 are positioned between the first plate 320 and the second plate 330.

In the embodiment, the translation seat 130 is provided as the first plate 320 and the second plate 330 which are parallel to each other, and the first wheel 150, the second wheel 160, the first cam 190 and the second cam 200 are all located between the first plate 320 and the second plate 330, so that the stress of the translation seat 130 is more balanced, and further, the movement of the translation seat 130 is more stable.

In some embodiments, the cover 390 has a mounting hole 400 for receiving the first shaft 180.

In the present embodiment, the casing 100 is configured as the housing 380 and the cover 390, and the cover 390 has the mounting hole 400 for receiving the first shaft 180, so that the spring is easily assembled and disassembled.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the gist of the present invention.

Claims (10)

1. A floor spring, comprising:

a housing (100) having an accommodation chamber (110);

the resetting mechanism (120) is arranged in the accommodating cavity (110) and comprises a translation seat (130) and a first spring (140) for driving the translation seat (130) to reset, a first wheel (150) and a second wheel (160) are arranged on the translation seat (130), the first wheel (150) is positioned on one side, away from the first spring (140), of the translation seat (130), and the second wheel (160) is positioned on one side, close to the first spring (140), of the translation seat (130);

the cam mechanism (170) is positioned between the first wheel (150) and the second wheel (160), and comprises a first shaft (180), a first cam (190) and a second cam (200) which are coaxially arranged, the first shaft (180) is rotationally connected with the machine shell (100), the outer surface of the first wheel (150) is abutted with the outer surface of the first cam (190), the first cam (190) is provided with a first arc surface (210) and a second arc surface (220) which are symmetrically arranged, the first arc surface (210) is provided with a first concave arc surface (230), the first concave arc surface (230) is abutted with the first wheel (150) for positioning, the outer surface of the second wheel (160) is abutted with the outer surface of the second cam (200), the second cam (200) is provided with a third arc surface (240) and a fourth arc surface (250) which are symmetrically arranged, and the distance between the third arc surface (240) and the fourth arc surface (250) and the axis of the first shaft (180) is gradually increased, a fifth cambered surface (260) with constant distance from the axis of the first shaft (180) is arranged between the third cambered surface (240) and the side, where the distance between the fourth cambered surface (250) and the axis of the first shaft (180) is reduced.

2. A floor spring according to claim 1, wherein said first cambered surface (210) is further provided with a second concave cambered surface (270), said second concave cambered surface (270) being positioned in abutment with said first wheel (150).

3. A floor spring according to claim 1, wherein a third wheel (280) is further disposed on the translation seat (130), the third wheel (280) is located on a side of the translation seat (130) far away from the first spring (140), the first wheel (150) and the third wheel (280) are symmetrically disposed along a line connecting a circle center of the second wheel (160) and an axis of the first shaft (180), the second arc surface (220) is provided with a third concave arc surface (290), and the third concave arc surface (290) is synchronously abutted with the third wheel (280), the first concave arc surface (230) and the first wheel (150) for positioning.

4. A floor spring according to claim 3, wherein the second cambered surface (220) is further provided with a fourth concave cambered surface (300), the fourth concave cambered surface (300) being positioned in abutment with the third wheel (280).

5. A floor spring according to claim 1, characterized in that the translational seat (130) is provided with a first runner (310) accommodating the first shaft (180), the first runner (310) being arranged extending in the direction of movement of the translational seat (130).

6. A floor spring according to claim 1, wherein the second wheel (160) is fixedly connected to the translator (130).

7. A floor spring according to claim 1, characterized in that said first wheel (150) is rotatably connected to said translator (130).

8. A floor spring according to claim 1, wherein the translating carriage (130) comprises a first plate (320) and a second plate (330) arranged in parallel, the first wheel (150), the second wheel (160), the first cam (190) and the second cam (200) being located between the first plate (320) and the second plate (330).

9. A floor spring according to claim 1, wherein the return mechanism (120) further comprises a first piston (340) and a connecting rod (350) connecting the first piston (340) and the translational seat (130), the accommodating chamber (110) comprises a first chamber (360) and a second chamber (370) which are communicated, the first chamber (360) accommodates the translational seat (130) to slide, the second chamber (370) accommodates the first piston (340) to slide, the first spring (140) is located between the first piston (340) and the translational seat (130), one end of the first spring (140) is connected to the first piston (340), and the other end of the first spring (140) is connected to the wall of the second chamber (370).

10. A floor spring according to claim 1, wherein the housing (100) comprises a housing (380) and a cover (390), the cover (390) having a mounting hole (400) for receiving the first shaft (180).

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