The present invention relates to a bunk bed, particularly to a connecting structure of a cross member and a stand member.
A situation often happens that people have to assemble or disassembled two pipes. Mostly, the two pipes are connected by screws, so screwdriver or other tools is needed; the operation is difficult and complicated. Particularly for a bunk bed, the stand members of the bunk bed are in a height more than two meters, the bed structure may incline or be off balance due to unstable connecting or mispositioning of the cross members and the stand members. Therefore, existing bunk bed needs a quantity of screw bolts to connecting the cross members and the stand members in different portions, resulting in complicated and time waist assembling.
The present invention is provided with a structure for connecting a cross member and a stand member of a bunk bed and a bunk bed, which overcome the disadvantages of the existing known technology. The technical solution of the present invention is that:
A structure for connecting a cross member and a stand member of a bunk bed, wherein an end portion of the cross member is disposed with a shaft sleeve, the stand member comprises an upper stand member and a lower stand member, the top portion of the lower member is disposed with a joint portion used to connect to the shaft sleeve and the upper stand member, the joint portion is disposed with an insert hole;
the internal side surface of the joint portion and the external side surface of the bottom portion of the upper stand member are inclined surfaces coupled to each other, the bottom portion of the upper stand member is inserted to the insert hole of the joint portion, the external side surface of the bottom portion of the upper stand member and the internal side surface of the joint portion are tightly fitting or interference fitting;
the external side surface of the joint portion and the internal side surface of the shaft sleeve are inclined surfaces coupled to each other, the internal side surface of the shaft sleeve and the external side surface of the joint portion are tightly fitting or interference fitting.
In another preferred embodiment, the inclined surface is conical.
In another preferred embodiment, the joint portion comprises a housing and an inner sleeve, the external side surface of the housing forms the external side surface of the joint portion, the inner sleeve is embedded into the housing, the insert hole is disposed in the inner sleeve, the internal side surface of the inner sleeve forms the internal side surface of the joint portion.
In another preferred embodiment, the housing and the lower stand member are integrally formed; the external edge of the top end of the inner sleeve is disposed with a limit ring protruding outwardly, the limit ring is hanging to the top end face of the shaft sleeve; the bottom end of the side wall of the inner sleeve is disposed with a plurality of claw catches in the periphery; the bottom portion of the upper stand member is inserted to the insert hole of the inner sleeve, the claw catches are stretched to fit tightly to the housing.
In another preferred embodiment, the inner sleeve is made of plastic or other deformable material.
In another preferred embodiment, the inclined surface is conical.
A bunk bed, comprising an upper cross member, a lower cross member and a stand member, wherein the stand member comprises an upper stand member, a central stand member and a lower stand member;
an end portion of the lower cross member is disposed with a shaft sleeve, the top portion of the lower stand member, the shaft sleeve of the lower cross member and the bottom portion of the central stand member are applied above mentioned structure. an end portion of the upper cross member is disposed with a shaft sleeve, the top portion of the central stand member, the shaft sleeve of the upper cross member and the bottom portion of the upper stand member are applied above mentioned structure.
Compared to the existing known technology, the technical proposal of the present invention has advantages:
1. The internal side surface of the joint portion and the external side surface of the bottom portion of the stand member are inclined surfaces opposite arranged, two surfaces are tightly fitting to form a tight fit, realizing the connecting of the upper stand member and the central stand member; the external side surface of the joint portion and the internal side surface of the shaft sleeve are inclined surfaces opposite arranged, two surfaces are tightly fitting to form a tight fit, realizing the connecting of the upper cross member and the central stand member; with the two pairs of inclined surfaces, the cross member, the upper stand member and the bottom stand member can be quickly connected, the assembly and the disassembly are convenient, time saving and labor saving.
2. The joint portion comprises a housing and an inner sleeve, the side wall of the inner sleeve is disposed with a plurality of elastic claw catches, the claw catches can stretch to connect tightly to the housing, the structure is more stable.
The present invention will be further described with the drawings and the embodiments.
Referring to
The internal side surface 32-1 of the joint portion 32 and the external side surface 20-1 of the bottom portion of the upper stand member 20 are a pair of inclined surfacess opposite arranged, the bottom portion of the upper stand member 20 is inserted to the insert hole; the external side surface of the bottom portion of the upper stand member 20 and the internal side surface 32-1 of the joint portion 32 are tightly connected so as to connect the upper stand member 20 and the lower stand member 30;
The external side surface 32-2 of the joint portion 32 and the internal side surface 12-2 of the shaft sleeve 12 are a pair of inclined surfaces arranged opposite, the shaft sleeve 12 is sleeved on the joint portion 32; the internal side surface 12-2 of the shaft sleeve and the external side surface 32-2 of the joint portion 32 are tightly connected so as to connect the cross member 10 and the lower stand member 30.
The shaft sleeve 12, the upper stand member 20 and the lower stand member 30 are in a straight line; the internal side surface 32-1 and the external side surface 20-1 are tightly fitting, the external side surface 32-2 and the internal side surface 12-2 are tightly fitting; the cross member 10, the upper stand member 20 and the lower stand member are tightly connected without any screw bolt.
In this embodiment, the surface is conical. Namely, the internal side surface 32-1 and the external side surface 20-1 are conical surfaces coupled to each other in sleeve way, the external side surface 32-2 and the internal side surface 12-2 are conical surfaces coupled to each other in sleeve way, the connecting has better strength.
Preferred, the joint portion 32 comprises a housing 322 and an inner sleeve 324, the external side surface of the housing 322 forms the external side surface 32-2 of the joint portion, the inner sleeve 324 is embedded to the housing 322, the insert hole is disposed at the inner sleeve 324, the internal side surface of the inner sleeve 324 forms the internal side surface 32-1 of the joint portion. The housing 322 and the lower stand member 30 are integrally formed, being a hollow pipe; the external edge of the top end of the inner sleeve 324 is disposed with a limit ring 326 protruding outwardly, the limit ring 326 is hanging to the top end face of the shaft sleeve 12; the bottom end of the side wall of the inner sleeve 324 is disposed with a plurality of elongated holes arranged in a ring array, forming a plurality of elastic claw catches 328 arranged in a ring array; the bottom portion of the upper stand member 20 is inserted to the insert hole, the elastic claw catches 328 are stretched to tightly fit to the housing 333, thus preventing the inner sleeve 324 from detaching from the housing 322. The inner sleeve 324 is plastic with well deforming performance.
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In this embodiment, the inclined surface is conical. Namely, the internal side surface 82-1 and the external side surface 70-1 are conical surfaces coupled to each other in sleeve way, the external side surface 82-2 and the internal side surface 52-2 are conical surfaces coupled to each other in sleeve way, the internal side surface 92-1 and the external side surface 80-1 are conical surfaces coupled to each other in sleeve way, the external side surface 92-2 and the internal side surface 62-2 are conical surfaces coupled to each other in sleeve way, the connecting has better strength.
The joint portion 82 and 92, having the same structure as the previous joint portion 32, comprises the housing and the inner sleeve, the housing of the joint portion 82 is connected to the top portion of the central stand member 80, the housing of the joint portion 92 is connected to the top portion of the lower stand member 90, the structure of the joint portion 82 and 92 will be not further described.
Although the present invention has been described with reference to the preferred embodiments thereof for carrying out the patent for invention, it is apparent to those skilled in the art that a variety of modifications and changes may be made without departing from the scope of the patent for invention which is intended to be defined by the appended claims.
The present invention is provided with a structure for connecting a cross member and a stand member of a bunk bed and a bunk bed. With two pairs of inclined surfaces, the cross member, the upper stand member and the lower stand member can be quickly connected. The assembly and disassembly are quite convenient, time saving and labor saving. The present invention has well industrial applicability.
Number | Date | Country | Kind |
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201610012026.7 | Jan 2016 | CN | national |
Filing Document | Filing Date | Country | Kind |
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PCT/CN2017/070391 | 1/6/2017 | WO | 00 |