Structure for connecting cross member and stand member of bunk bed and bunk bed having same
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.
1. 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,
a top portion of the lower stand member is disposed with a joint portion configured to be connected to the shaft sleeve and the upper stand member,
the joint portion comprises an insert hole,
an internal side surface of the joint portion defines a first inclined surface,
an external side surface of a bottom portion of the upper stand member defines a second inclined surface,
the first inclined surface and the second inclined surface are first inclined surfaces coupled to each other,
the second inclined surface tapers downward,
the first inclined surface tapers upward,
the joint portion comprises a housing and an elastic inner sleeve,
an external side surface of the housing defines an external side surface of the joint portion,
the elastic inner sleeve is clamped in the housing,
the elastic inner sleeve comprises the insert hole,
an internal side surface of the insert hole defines the internal side surface of the joint portion,
an external side surface of the elastic inner sleeve defines a third inclined surface,
an internal side surface of the housing defines a fourth inclined surface,
the third inclined surface and the fourth inclined surface are coupled to each other,
the fourth inclined surface tapers upward,
the third inclined surface tapers downward,
the bottom portion of the upper stand member is disposed in the insert hole,
the external side surface of the bottom portion of the upper stand member and the internal side surface of the joint portion are transition fit or interference fit,
the external side surface of the joint portion cooperates with an internal side surface of the shaft sleeve,
the internal side surface of the shaft sleeve and the external side surface of the joint portion are transition fit or interference fit,
the first inclined surface, the second inclined surface, the third inclined surface, and the fourth inclined surface are conical,
and
at least a portion of a first connection between the external side surface of the bottom portion of the upper stand member and the internal side surface of the insert hole contacts a portion of a second connection between the internal side surface of the shaft sleeve and the external side surface of the housing.
2. The structure according to claim 1 , wherein:
the housing and the lower stand member are integrally formed,
an external edge of a top end of the elastic inner sleeve comprises a limit ring protruding outward,
the limit ring hangs on a top end face of the shaft sleeve,
a bottom end of a side wall of the elastic inner sleeve comprises a plurality of claw catches arranged along a circumferential direction of the elastic inner sleeve, and
each of the plurality of claw catches elastically stretches to be clamped to the housing.
3. The structure according to claim 2 , wherein the elastic inner sleeve is a plastic member or a deformable member.
4. The structure according to claim 1 , wherein the joint portion is welded or locked to the top portion of the lower stand member.
5. The structure according to claim 4 , wherein the lower stand member is a hollow pipe.
6. The structure according to claim 1 , wherein:
the lower stand member is a solid pipe, and
the joint portion and the lower stand member are integrally formed.
7. 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 upper cross member is disposed with a first shaft sleeve,
a top portion of the central stand member is disposed with a first joint portion configured to be connected to the first shaft sleeve of the upper cross member and the upper stand member,
the first joint portion comprises a first insert hole,
an internal side surface of the first joint portion defines a first inclined surface,
an external side surface of a bottom portion of the upper stand member defines a second inclined surface,
the first inclined surface and the second inclined surface are coupled to each other,
the second inclined surface tapers downward,
the first inclined surface tapers upward,
the first joint portion comprises a first housing and a first elastic inner sleeve,
an external side surface of the first housing defines an external side surface of the first joint portion,
the first elastic inner sleeve is clamped in the first housing,
the first elastic inner sleeve comprises the first insert hole,
an internal side surface of the first insert hole defines the internal side surface of the first joint portion,
an external side surface of the first elastic inner sleeve defines a third inclined surface,
an internal side surface of the first housing defines a fourth inclined surface,
the third inclined surface and the fourth inclined surface are coupled to each other,
the fourth inclined surface tapers upward,
the third inclined surface tapers downward,
the bottom portion of the upper stand member is disposed in the first insert hole-,
the external side surface of the bottom portion of the upper stand member and the internal side surface of the first joint portion are transition fit,
the external side surface of the first joint portion cooperates with an internal side surface of the first shaft sleeve,
the internal side surface of the first shaft sleeve and the external side surface of the first joint portion are transition fit,
an end portion of the lower cross member is disposed with a second shaft sleeve,
a top portion of the lower stand member is disposed with a second joint portion configured to be connected to the second shaft sleeve of the lower cross member and the central stand member,
the second joint portion comprises a second insert hole,
an internal side surface of the second joint portion defines a fifth inclined surface,
an external side surface of a bottom portion of the central stand member defines a sixth inclined surface,
the fifth inclined surface and the sixth inclined surface are coupled to each other,
the sixth inclined surface tapers downward,
the fifth inclined surface tapers upward,
the second joint portion comprises a second housing and a second elastic inner sleeve,
an external side surface of the second housing defines an external side surface of the second joint portion,
the second elastic inner sleeve is clamped in the second housing,
the second elastic inner sleeve comprises the second insert hole,
an internal side surface of the second insert hole defines the internal side surface of the second joint portion,
an external side surface of the second elastic inner sleeve defines a seventh inclined surface,
an internal side surface of the second housing defines an eighth inclined surface,
the seventh inclined surface and the eighth inclined surface are coupled to each other,
the eighth inclined surface tapers upward,
the seventh inclined surface tapers downward,
the bottom portion of the central stand member is disposed in the second insert hole,
the external side surface of the bottom portion of the central stand member and the internal side surface of the second joint portion are transition fit,
the external side surface of the second joint portion cooperates with an internal side surface of the second shaft sleeve are,
the internal side surface of the second shaft sleeve and the external side surface of the second joint portion are transition fit,
the first inclined surface, the second inclined surface, the third inclined surface, the fourth inclined surface, the fifth inclined surface, the sixth inclined surface, the seventh inclined surface, and the eighth inclined surface are conical,
at least a portion of a first connection between the external side surface of the bottom portion of the upper stand member and the internal side surface of the first insert hole contacts a portion of a second connection between the internal side surface of the first shaft sleeve and the external side surface of the first housing,
at least a portion of a third connection between the external side surface of the bottom portion of the central stand member and the internal side surface of the second insert hole contacts a portion of a fourth connection between the internal side surface of the second shaft sleeve and the external side surface of the second housing.
8. The bunk bed according to claim 7 , wherein:
an external edge of a top end of each of the first elastic inner sleeve and the second elastic inner sleeve comprises a limit ring protruding outward,
the limit rings hang on top end faces of the first shaft sleeve and the second shaft sleeve,
a bottom end of a side wall of each of the first elastic inner sleeve and the second elastic inner sleeve comprises a plurality of claw catches arranged along a circumferential direction of a corresponding one of the first elastic inner sleeve or the second elastic inner sleeve, and
each of the plurality of claw catches elastically stretches to be clamped to a corresponding one of the first housing or the second housing.
9. The bunk bed according to claim 7 , wherein:
the first housing is disposed at the top portion of the central stand member,
the second housing is disposed at the top portion of the lower stand member,
the first housing and the central stand member are integrally formed, and
the second housing and the lower stand member are integrally formed.
10. The bunk bed according to claim 7 , wherein:
the central stand member is a solid pipe,
the first joint portion and the central stand member are integrally formed,
the lower stand member is a solid pipe, and
the second joint portion and the lower stand member are integrally formed.
11. 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 upper cross member is disposed with a first shaft sleeve,
a top portion of the central stand member is disposed with a joint portion configured to be connected to the first shaft sleeve of the upper cross member and the upper stand member,
a central portion of the joint portion comprises an insert hole,
an internal side surface of the joint portion defines a first inclined surface,
an external side surface of a bottom portion of the upper stand member defines a second inclined surface,
the first inclined surface and the second inclined surface are coupled to each other,
the second inclined surface tapers downward,
the first inclined surface tapers upward,
the joint portion comprises a housing and an elastic inner sleeve,
an external side surface of the housing defines an external side surface of the joint portion,
the elastic inner sleeve is clamped in the housing,
the elastic inner sleeve comprises the insert hole,
an internal side surface of the insert hole defines the internal side surface of the joint portion,
an external side surface of the elastic inner sleeve defines a third inclined surface,
an internal side surface of the housing defines a fourth inclined surface,
the third inclined surface and the fourth inclined surface are coupled to each other,
the fourth inclined surface tapers upward,
the third inclined surface tapers downward,
the bottom portion of the upper stand member is disposed in the insert hole,
the external side surface of the bottom portion of the upper stand member and the internal side surface of the joint portion are transition fit,
the external side surface of the joint portion cooperates with an internal side surface of the first shaft sleeve,
the internal side surface of the first shaft sleeve and the external side surface of the joint portion are transition fit,
an end portion of the lower cross member is disposed with a second shaft sleeve,
a top portion of the lower stand member, the second shaft sleeve of the lower cross member, and a bottom portion of the central stand member are connected,
the first inclined surface, the second inclined surface, the third inclined surface, and the fourth inclined surface are conical,
at least a portion of a first connection between the external side surface of the bottom portion of the upper stand member and the internal side surface of the insert hole contacts a portion of a second connection between the internal side surface of the first shaft sleeve and the external side surface of the housing.
12. The bunk bed according to claim 11 , wherein:
an external edge of a top end of the elastic inner sleeve comprises a limit ring protruding outward,
the limit ring hangs on a top end face of the first shaft sleeve,
a bottom end of a side wall of the elastic inner sleeve comprises a plurality of claw catches arranged along a circumferential direction of the elastic inner sleeve,
the housing is the top portion of the central stand member, and
each of the plurality of claw catches elastically stretches to be clamped to the housing.
13. 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 first shaft sleeve,
a top portion of the lower stand member is disposed with a first joint portion configured to be connected to the first shaft sleeve of the lower cross member and the central stand member,
a central portion of the first joint portion comprises an insert hole,
an internal side surface of the first joint portion defines a first inclined surface,
an external side surface of a bottom portion of the central stand member defines a second inclined surface,
the first inclined surface and the second inclined surface are coupled to each other,
the second inclined surface tapers downward,
the first inclined surface tapers upward,
the first joint portion comprises a housing and an elastic inner sleeve,
an external side surface of the housing defines an external side surface of the first joint portion,
the elastic inner sleeve is clamped in the housing,
the elastic inner sleeve comprises the insert hole,
an internal side surface of the insert hole defines the internal side surface of the first joint portion,
an external side surface of the insert hole defines a third inclined surface,
an internal side surface of the housing defines a fourth inclined surface,
the third inclined surface and the fourth inclined surface are coupled to each other,
the fourth inclined surface tapers upward,
the third inclined surface tapers downward,
the bottom portion of the central stand member is disposed in the insert hole,
the external side surface of the bottom portion of the central stand member and the internal side surface of the first joint portion are transition fit,
the external side surface of the first joint portion cooperates with an internal side surface of the first shaft sleeve,
the internal side surface of the first shaft sleeve and the external side surface of the first joint portion are transition fit,
an end portion of the upper cross member is disposed with a second shaft sleeve,
a top portion of the central stand member, the second shaft sleeve of the upper cross member, and the upper stand member are connected,
the first inclined surface, the second inclined surface, the third inclined surface, and the fourth inclined surface are conical,
and
at least a portion of a first connection between the external side surface of the bottom portion of the central stand member and the internal side surface of the insert hole contacts a portion of a second connection between the internal side surface of the first shaft sleeve and the external side surface of the housing.
14. The bunk bed according to claim 13 , wherein:
an external edge of a top end of the elastic inner sleeve comprises a limit ring protruding outward,
the limit ring hangs on a top end face of the first shaft sleeve,
a bottom end of a side wall of the elastic inner sleeve comprises a plurality of claw catches arranged along a circumferential direction of the elastic inner sleeve,
the housing is the top portion of the lower stand member, and
each of the plurality of claw catches elastically stretches to be clamped to the housing.