Elastic module and elastic cushion

Abstract

An elastic module includes a plurality of spring units. The plurality of spring units are configured to be spliced together to form the elastic module, and each of the plurality of spring units includes a first spring and a second spring. The first spring is configured to be axially compressed to a locking position, and an upper end of the first spring is disposed with an end cover. The second spring is detachably connected to the end cover to form a corresponding one of the plurality of spring units.

What is claimed is: 
     
         1 . An elastic module, comprising:
 a plurality of spring units, wherein:
 the plurality of spring units are configured to be spliced together to form the elastic module, 
 each of the plurality of spring units comprises a first spring and a second spring, 
 the first spring is configured to be axially compressed to a locking position, 
 an upper end of the first spring is disposed with an end cover, and 
 the second spring is detachably connected to the end cover to form a corresponding one of the plurality of spring units. 
   
     
     
         2 . The elastic module according to  claim 1 , wherein:
 a bottom of the second spring is disposed with a bottom cover, and   the bottom cover of the second spring is connected to the end cover by rotation, insertion, or threads.   
     
     
         3 . The elastic module according to  claim 2 , wherein:
 the bottom cover of the second spring is symmetrically provided with two rotation-connecting members,   each of the two rotation-connecting members comprises a first part and a second part,   the first part extends axially from a bottom of a base, and   the second part is located at an end of the first part and extends radially outward from a center of the first part.   
     
     
         4 . The elastic module according to  claim 3 , wherein:
 a top of the end cover comprises two sliding rails corresponding to the two rotation-connecting members in a one-to-one correspondence as a mounting structure,   each of the two sliding rails is a strip-shaped recessed hole,   a width of the strip-shaped recessed hole gradually narrows along a rotation direction of the two rotation-connecting members, and   a width of a narrowest part of the strip-shaped recessed hole is smaller than a width of the second part.   
     
     
         5 . The elastic module according to  claim 2 , wherein:
 a bottom of the bottom cover of the second spring is disposed with an insertion member.   
     
     
         6 . The elastic module according to  claim 5 , wherein:
 a top of the end cover of the first spring comprises an insertion groove configured to correspond to the insertion member.   
     
     
         7 . The elastic module according to  claim 6 , wherein:
 the bottom of the bottom cover of the second spring is disposed with a conical insertion member with a gradually decreasing radius along an insertion direction of the conical insertion member, and   the conical insertion member is configured to be inserted into the insertion groove to enable the conical insertion member to be self-locked along a vertical direction.   
     
     
         8 . The elastic module according to  claim 6 , wherein:
 the bottom of the bottom cover is symmetrically provided with two tapered insertion members with a gradually decreasing width along an insertion direction of the two tapered insertion members,   a tapered groove is formed between the two tapered insertion members,   two sides of the top of the end cover comprise two tapered insertion grooves configured to cooperate with the two tapered insertion members,   a tapered protrusion is formed between the two tapered insertion grooves,   the two tapered insertion members are configured to be inserted into the two tapered insertion grooves, and   a double-conical surface structure formed by the two tapered insertion members and the tapered protrusion is self-locked along a vertical direction.   
     
     
         9 . The elastic module according to  claim 2 , wherein:
 an inside the end cover comprises a threaded connecting member,   outer threads are provided on an outer wall of the threaded connecting member,   the bottom cover is a circular ring,   an inner wall of the circular ring is provided with inner threads, and   the bottom cover of the second spring is threadedly connected to the threaded connecting member.   
     
     
         10 . The elastic module according to  claim 1 , wherein:
 the plurality of spring units are arranged in a staggered arrangement to form a hexagonal distribution.   
     
     
         11 . An elastic module, comprising:
 a plurality of spring units, and   a connecting plate, wherein:
 the plurality of spring units are configured to be spliced together to form the elastic module, 
 each of the plurality of spring units comprises a first spring and a second spring, 
 the first spring is configured to be axially compressed to a locking position, 
 an upper end of the first spring is disposed with an end cover, 
 a bottom of the second spring is disposed with a bottom cover, and 
 the end covers of the first springs of the plurality of spring units and the bottom covers of the second springs of the plurality of spring units are respectively connected to two sides of the connecting plate to form the elastic module. 
   
     
     
         12 . The elastic module according to  claim 11 , wherein:
 a lower side of the connecting plate comprises a first insertion structure into which the end cover of the first spring is inserted, and   an upper side of the connecting plate comprises a second insertion structure into which the bottom cover of the second spring is inserted.   
     
     
         13 . The elastic module according to  claim 12 , wherein:
 the first springs of the plurality of spring units are arranged in a transverse direction and a longitudinal direction to be in a matrix arrangement, or   the first springs of the plurality of spring units are arranged in a staggered arrangement to form a hexagonal distribution.   
     
     
         14 . The elastic module according to  claim 12 , wherein:
 the second springs of the plurality of spring units are arranged in a transverse direction and a longitudinal direction to be in a matrix arrangement, or   the second springs of the plurality of spring units are arranged in a staggered arrangement to form a hexagonal distribution.   
     
     
         15 . The elastic module according to  claim 12 , wherein:
 the upper side and the lower side of the connecting plate each comprises a plurality of circular protruding rings extending along a vertical direction, and   the end cover and the bottom cover each comprises a recessed hole that is interference-fitted with a corresponding one of the plurality of circular protruding rings.   
     
     
         16 . The elastic module according to  claim 12 , wherein:
 the upper side and the lower side of the connecting plate are each formed with a plurality of annular insertion grooves, and   an inside of each of the plurality of annular insertion grooves comprises a tapered insertion member configured to be connected to the bottom cover or the end cover to be self-locked along an axial direction of the first spring.   
     
     
         17 . An elastic module, comprising:
 a plurality of spring units, wherein:
 each of the plurality of spring units comprises a first spring and a second spring, 
 the first spring is configured to be axially compressed to a locking position, 
 an upper end of the first spring is disposed with an end cover, 
 the second spring is detachably connected to the end cover, 
 the plurality of spring units are arranged in a transverse direction and a longitudinal direction to be in a matrix arrangement to enable adjacent rows or columns of the plurality of spring units to be formed with gaps, and 
 one or more third springs are inserted into one or more of the gaps to form the elastic module. 
   
     
     
         18 . The elastic module according to  claim 17 , wherein:
 the second spring is in an inverted conical shape, and   the one or more third springs are in a positive conical shape.   
     
     
         19 . The elastic module according to  claim 18 , wherein:
 the second spring and the one or more third springs are cylindrical and have a same size.   
     
     
         20 . An elastic module, comprising:
 a plurality of spring units, wherein:
 the plurality of spring units are configured to be spliced together to form the elastic module, 
 each of the plurality of spring units comprises a first spring and at least two second springs, 
 the first spring is configured to be axially compressed to a locking position, 
 an upper end of the first spring is disposed with an end cover, and 
 the at least two second springs are detachably connected to the end cover to form a corresponding one of the plurality of spring units. 
   
     
     
         21 . The elastic module according to  claim 20 , wherein:
 the end cover comprises at least two mounting structures, and   the at least two second springs are connected to the end cover through the at least two mounting structures by insertion or rotation.   
     
     
         22 . The elastic module according to  claim 1 , wherein:
 the second spring is configured to be axially compressed to a locking position.   
     
     
         23 . The elastic module according to  claim 1 , wherein:
 the second spring is a hollow structure, and   the second springs of the plurality of spring units are configured to be stacked to each other along an axial direction of the second springs.   
     
     
         24 . The elastic module according to  claim 23 , wherein:
 a flexible spring top cover is provided on an upper side of the second spring, and   the flexible spring top cover is inserted into the hollow structure.   
     
     
         25 . The elastic module according to  claim 1 , wherein:
 an end of the first spring facing the end cover is disposed with a base,   a lower end of the end cover is disposed with a first buckling structure extending along a spring compression direction,   an upper end of the base is disposed with a second buckling structure extending along the spring compression direction, and   when the first spring is in the locking position, the first buckling structure and the second buckling structure are buckled to each other.   
     
     
         26 . The elastic module according to  claim 25 , wherein:
 two hooks are symmetrically provided on a lower end surface of the end cover in the spring compression direction as the first buckling structure,   each of the two hooks comprises a connecting portion and a hook portion, and   the hook portion is disposed on an outer side of the connecting portion.   
     
     
         27 . The elastic module according to  claim 26 , wherein:
 two sides of the base extend toward a center of the base to form two buckling members as the second buckling structure,   each of the two buckling members comprises a connecting arm and a buckling portion,   the buckling portion is located at a distal end of the connecting arm,   the buckling portion is suspended so that the two buckling members have elasticity to be pushed up by the two hooks, and   when the first spring is in the locking position, the hook portion and the buckling portion are axially interlocked with each other to achieve a buckling connection.   
     
     
         28 . The elastic module according to  claim 27 , wherein:
 a distance between the buckling portion and a central axis of the first spring gradually decreases along the spring compression direction of the first spring, so that the buckling portion forms an inclined surface, and   due to an external force, the hook portion slides down along the inclined surface to be buckled to a bottom end of the buckling portion, so that the two hooks and the two buckling members are axially interlocked with each other.   
     
     
         29 . The elastic module according to  claim 28 , wherein:
 due to the external force, the hook portion pushes the buckling portion until the hook portion is separated from the buckling portion to release the buckling connection.   
     
     
         30 . The elastic module according to  claim 25 , wherein:
 a lower end surface of the end cover is disposed with a pushing member extending along the spring compression direction of the first spring, and   two sides of the pushing member are respectively disposed with one or more elastic position-limiting members as the first buckling structure.   
     
     
         31 . The elastic module according to  claim 30 , wherein:
 an upper end surface of the base is disposed with a position-limiting groove configured to cooperate with the one or more elastic position-limiting members as the second buckling structure,   a side wall of the position-limiting groove is formed with a position-limiting wall, and   due to an external force, the pushing member drives the one or more elastic position-limiting members to slide into the position-limiting groove, so that the one or more elastic position-limiting members are stuck by the position-limiting wall to achieve a buckling connection.   
     
     
         32 . The elastic module according to  claim 1 , wherein:
 the first spring comprises a spring and a cloth cover,   the cloth cover is wrapped on an outside of the spring,   an outside of the cloth cover at a top of the spring is disposed with a ring,   a lower surface of the ring is recessed inward along a vertical direction to form an annular groove,   a bottom surface of the end cover is disposed with a positioning structure, and   the positioning structure is buckled to the annular groove to be interlocked with the ring.   
     
     
         33 . The elastic module according to  claim 32 , wherein:
 the ring comprises a first portion and a second portion,   the second portion is disposed on an inside of the cloth cover,   the first portion is disposed on the outside of the cloth cover, and   the first portion and the second portion are buckled and fixed to the spring.   
     
     
         34 . The elastic module according to  claim 25 , wherein:
 the first spring comprises a spring and a cloth cover,   the cloth cover is wrapped on an outside of the spring,   an outside of the cloth cover at a bottom of the spring is disposed with a ring,   an outside of the ring comprises a protrusion,   a radial outside of the base forms a U-shaped groove,   a top of an outer wall of the U-shaped groove forms a positioning structure,   the ring is buckled to the U-shaped groove, and   the U-shaped groove and the ring are axially interlocked with each other.   
     
     
         35 . The elastic module according to  claim 1 , wherein:
 a spring in the second spring is detachable.   
     
     
         36 . An elastic cushion, comprising:
 the elastic module according to  claim 1 .