CN209679506U - A kind of combined and spliced structure - Google Patents
A kind of combined and spliced structure Download PDFInfo
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- CN209679506U CN209679506U CN201920165237.3U CN201920165237U CN209679506U CN 209679506 U CN209679506 U CN 209679506U CN 201920165237 U CN201920165237 U CN 201920165237U CN 209679506 U CN209679506 U CN 209679506U
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Abstract
A kind of combined and spliced structure, including the first splice and the second splice；First splice includes the first splice main body, and the first splice main body is in a rectangular parallelepiped shape；One face of the first splice main body is equipped with one first round spliced eye；Second splice includes the second splice main body, and the second splice main body is in a rectangular parallelepiped shape；One face of the second splice main body is equipped with one second columnar projections, and second columnar projections and the described first round spliced eye on the first splice are mating；One first round spliced eye or the first columnar projections are respectively equipped on remaining five face of first splice main body；One second round spliced eye or the second columnar projections are respectively equipped on remaining five face of second splice main body.In the combined and spliced structure of the utility model, the first splice and the second splice can be relatively rotated, and realize the flexible modulation of angle；And can splice with other assemblies, to realize extension splicing, contribute to form rich and varied splicing construction.
Description
Technical field
The utility model relates to connection structures, and in particular to a kind of combined and spliced structure.
Background technique
Block toy or building block system splicing construction, are generally stitched together by multiple splices.Due to one group of splicing
Part can have a different arrangements, combination, operator can oneself design, design as needed, form different structure, moulding
Splice works, therefore helps to cultivate imagination, designed capacity and the manipulative ability of operator.But current splice structure and
Connecting method is more single, variation is lacked when splicing, it is difficult to meet the increasing demand of operator.
Summary of the invention
The technical problem to be solved by the utility model is to provide a kind of combined and spliced structure, this combined and spliced structure is spelled
After connecing can flexible modulation, and can realize extension splicing, contribute to form rich and varied splicing construction.The technical solution of use is such as
Under:
A kind of combined and spliced structure, it is characterised in that including the first splice and the second splice；First splice includes
First splice main body, the first splice main body is in a rectangular parallelepiped shape；One face of the first splice main body is equipped with one first circle
The center line of shape spliced eye, the first round spliced eye is mutually perpendicular to corresponding face in the first splice main body；Second splicing
Part includes the second splice main body, and the second splice main body is in a rectangular parallelepiped shape；One face of the second splice main body is equipped with one
Second columnar projections, the center line of second columnar projections are mutually perpendicular to corresponding face in the second splice main body, this second
Columnar projections and the described first round spliced eye on the first splice are mating；Remaining five face of first splice main body
On be respectively equipped with one first round spliced eye or the first columnar projections, the center of each first round spliced eye or the first columnar projections
Line is mutually perpendicular to corresponding face in the first splice main body；One is respectively equipped on remaining five face of second splice main body
Two round spliced eyes or the second columnar projections, the center line and the second splice of each second round spliced eye or the second columnar projections
Corresponding face is mutually perpendicular in main body.
In said combination splicing construction, the second splice and the first splice are round slotting with first by the second columnar projections
It is mating to connect hole, is stitched together, and the first splice and the second splice can be around the center lines of the first round spliced eye
It relatively rotates, realizes the adjusting of angle.Moreover, the first splice and the second splice can all splice with other assemblies, formed more
Complicated structure.When above-mentioned first splice is connect with other assemblies, corresponding component is equipped with round slotting with corresponding first
Connect the columnar projections that hole matches, or equipped with the round spliced eye to match with corresponding first columnar projections, the component with
First splice can be relatively rotated around the center line of the first round spliced eye or the first columnar projections, realize freely adjusting for angle
Section, keeps splicing construction or moulding more rich and varied.Equally, when above-mentioned second splice is connect with other assemblies, corresponding group
Part is equipped with the round spliced eye to match with corresponding second columnar projections, or is equipped with and the corresponding second round spliced eye
The columnar projections to match, the component and the second splice can be around the second round spliced eye or the center lines of the second columnar projections
It relatively rotates, realizes freely adjusting for angle, keep splicing construction or moulding more rich and varied.In addition, the first round spliced eye
With the second round spliced eye for rod assemblies grafting, the rounded cross-sectional shape of rod assemblies (can also be rectangle or just more
Side shape), rod assemblies are inserted into the first round spliced eye or the second round spliced eye, it can be achieved that rod assemblies and the first splicing
Connection between part or the second splice.In this way, the first splice and the second splice can be connect with other assemblies, thus root
According to needing to be extended connection, required splicing construction is formed, a combination thereof mode and splicing construction are rich and varied.
In the first preferred embodiment, one first round grafting is respectively equipped on six faces of above-mentioned first splice main body
Hole is respectively equipped with one second columnar projections on six faces of the second splice main body.Second column on second splice
After protrusion and one first round spliced eye on the first splice are mating, remaining five first circles on the first splice
Remaining five second columnar projections on shape spliced eye, the second splice, can be used in mating with other assemblies.
In more preferable scheme, the first round spliced eye on the opposite face of above-mentioned first splice main body be mutually communicated and in
Heart line coincides.In this way, it is round that rod assemblies can be embedded in first with one end when being connect using rod assemblies with the first splice
In spliced eye, rod assemblies can also be passed through to the round spliced eye of two first be mutually communicated, rod assemblies middle section is made to exist
In the two first round spliced eyes, to increase the extension type of attachment of combined and spliced structure.
In more preferable scheme, above-mentioned first splice main body is in cube-shaped.
In more preferable scheme, above-mentioned second columnar projections are cylindrical bump.The cross section shape of above-mentioned second columnar projections
Shape can also be rectangle or regular polygon.
In more preferable scheme, the second columnar projections center line on the opposite face of above-mentioned second splice main body coincides.
In more preferable scheme, above-mentioned second splice main body is in cube-shaped.
In second of preferred embodiment, one first round grafting is respectively equipped on six faces of above-mentioned first splice main body
Hole；In six faces of the second splice main body, face is equipped with the second columnar projections, and one the is respectively equipped on remaining five face
Two round spliced eyes.The round spliced eye grafting of one first in the second columnar projections and the first splice on second splice
After cooperation, five second round spliced eyes on remaining five first on the first splice round spliced eyes, the second splice,
It can be used in mating with other assemblies.
In more preferable scheme, the first round spliced eye on the opposite face of above-mentioned first splice main body be mutually communicated and in
Heart line coincides.In this way, it is round that rod assemblies can be embedded in first with one end when being connect using rod assemblies with the first splice
In spliced eye, rod assemblies can also be passed through to the round spliced eye of two first be mutually communicated, rod assemblies middle section is made to exist
In the two first round spliced eyes, to increase the extension type of attachment of combined and spliced structure.
In more preferable scheme, above-mentioned first splice main body is in cube-shaped.
In more preferable scheme, above-mentioned second columnar projections are cylindrical bump.The cross section shape of above-mentioned second columnar projections
Shape can also be rectangle or regular polygon.
In more preferable scheme, the second round spliced eye in above-mentioned second splicing main body on opposite face be mutually communicated and in
Heart line is overlapped.In this way, it is round slotting that rod assemblies can be embedded in second with one end when being connect using rod assemblies with the second splice
It connects in hole, rod assemblies can also be passed through to the round spliced eye of two second be mutually communicated, make rod assemblies middle section at this
In two second round spliced eyes.
In more preferable scheme, on the center line of the second columnar projections in above-mentioned second splicing main body and the second splicing main body
The center line of the second round spliced eye on opposite face coincides.
In the third preferred embodiment, in six faces of above-mentioned first splice main body, it is convex that a face is equipped with the first column
It rises, one first round spliced eye is respectively equipped on remaining five face；In six faces of the second splice main body, a face is equipped with
Second columnar projections are respectively equipped with one second round spliced eye on remaining five face.In other words, the first splice and second is spelled
Fitting is all using the structure for being equipped with a columnar projections and five round spliced eyes.The second columnar projections on second splice with
After one first on first splice round spliced eye is mating, the first columnar projections on the first splice and remaining four
Five second round spliced eyes on a first round spliced eye, the second splice, can be used in mating with other assemblies.
In more preferable scheme, above-mentioned first columnar projections are cylindrical bump.The cross section shape of above-mentioned first columnar projections
Shape can also be rectangle or regular polygon.
In more preferable scheme, the first round spliced eye in above-mentioned first splicing main body on opposite face be mutually communicated and in
Heart line is overlapped.In this way, it is round slotting that rod assemblies can be embedded in first with one end when being connect using rod assemblies with the first splice
It connects in hole, rod assemblies can also be passed through to the round spliced eye of two first be mutually communicated, make rod assemblies middle section at this
In two first round spliced eyes.
In more preferable scheme, on the center line of the first columnar projections in above-mentioned first splicing main body and the first splicing main body
The center line of the first round spliced eye on opposite face coincides.
In more preferable scheme, above-mentioned second columnar projections are cylindrical bump.The cross section shape of above-mentioned second columnar projections
Shape can also be rectangle or regular polygon.
In more preferable scheme, the second round spliced eye in above-mentioned second splicing main body on opposite face be mutually communicated and in
Heart line is overlapped.In this way, it is round slotting that rod assemblies can be embedded in second with one end when being connect using rod assemblies with the second splice
It connects in hole, rod assemblies can also be passed through to the round spliced eye of two second be mutually communicated, make rod assemblies middle section at this
In two second round spliced eyes.
In more preferable scheme, on the center line of the second columnar projections in above-mentioned second splicing main body and the second splicing main body
The center line of the second round spliced eye on opposite face coincides.
In 4th kind of preferred embodiment, in six faces of above-mentioned first splice main body, it is convex that a face is equipped with the first column
It rises, one first round spliced eye is respectively equipped on remaining five face；One is respectively equipped on six faces of the second splice main body
Two columnar projections.The round spliced eye of one first in second columnar projections and the first splice on second splice is inserted
After connecing cooperation, the first columnar projections on the first splice and its on remaining four first round spliced eyes, the second splice
Remaining five the second columnar projections, can be used in mating with other assemblies.
In more preferable scheme, above-mentioned first columnar projections are cylindrical bump.The cross section shape of above-mentioned first columnar projections
Shape can also be rectangle or regular polygon.
In more preferable scheme, the first round spliced eye in above-mentioned first splicing main body on opposite face be mutually communicated and in
Heart line is overlapped.In this way, it is round slotting that rod assemblies can be embedded in first with one end when being connect using rod assemblies with the first splice
It connects in hole, rod assemblies can also be passed through to the round spliced eye of two first be mutually communicated, make rod assemblies middle section at this
In two first round spliced eyes.
In more preferable scheme, on the center line of the first columnar projections in above-mentioned first splicing main body and the first splicing main body
The center line of the first round spliced eye on opposite face coincides.
In more preferable scheme, above-mentioned second columnar projections are cylindrical bump.The cross section shape of above-mentioned second columnar projections
Shape can also be rectangle or regular polygon.
In more preferable scheme, the second columnar projections center line on the opposite face of above-mentioned second splice main body coincides.
In more preferable scheme, above-mentioned second splice main body is in cube-shaped.
Said combination splicing construction may also include third splicing on the basis of the first splice and the second splice splice
Part, third splice structure can be identical as the first splice or the second splice, in splicing after third splice, it can be achieved that and its
His component further expands connection, forms more complicated splicing construction.
In the combined and spliced structure of the utility model, after the first splice and the second splice are stitched together, first is spelled
Fitting and the second splice can relatively rotate, and realize the flexible modulation of angle；Moreover, the first splice and the second splice all may be used
Splice with other assemblies, to realize extension splicing, contributes to form rich and varied splicing construction.The combination of the utility model
Splicing construction can be used as the component part of block toy or building block system splicing construction.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of combined and spliced structure in the preferred embodiment in the utility model 1；
Fig. 2 is the structural schematic diagram (cross-sectional view) of the first splice in the preferred embodiment in the utility model 1；
Fig. 3 is the structural schematic diagram of the second splice in the preferred embodiment in the utility model 1；
Fig. 4 is the structural schematic diagram of combined and spliced structure in the preferred embodiment in the utility model 2；
Fig. 5 is the structural schematic diagram (cross-sectional view) of the second splice in the preferred embodiment in the utility model 2；
Fig. 6 is the structural schematic diagram of combined and spliced structure in the preferred embodiment in the utility model 3；
Fig. 7 is the structural schematic diagram of combined and spliced structure in the preferred embodiment in the utility model 4；
Fig. 8 is the structural schematic diagram of combined and spliced structure in the preferred embodiment in the utility model 5.
Specific embodiment
Embodiment 1
As shown in Figure 1, this combined and spliced structure includes the first splice 11 and the second splice 12.
With reference to Fig. 2, the first splice 11 includes the first splice main body 111, and the first splice main body 111 is in a rectangular parallelepiped shape
(the first splice main body 111 is in cube-shaped in the present embodiment)；One is respectively equipped on six faces of the first splice main body 111
First round spliced eye 112, the center line of each first round spliced eye 112 and corresponding face phase in the first splice main body 111
It is mutually vertical.The first round spliced eye 112 on the opposite face of first splice main body 111 is mutually communicated and center line coincides.
With reference to Fig. 3, the second splice 12 includes the second splice main body 121, and the second splice main body 121 is in a rectangular parallelepiped shape
(the second splice main body 121 is in cube-shaped in the present embodiment)；One is respectively equipped on six faces of the second splice main body 121
Second columnar projections 122, the center line of each second columnar projections 122 mutually hang down with corresponding face in the second splice main body 121
Directly.122 center line of the second columnar projections on the opposite face of second splice main body 121 coincides.Second column in the present embodiment
Shape protrusion 122 is cylindrical bump；The cross-sectional shape of second columnar projections 122 can also be rectangle or regular polygon.
Second columnar projections 122 on second splice 12 and one first on the first splice 11 round grafting
Hole 112 is mating；Remaining on remaining five first on first splice 11 round spliced eyes 112, the second splice 12
Five the second columnar projections 122, can be used in mating with other assemblies.
Embodiment 2
As shown in figure 4, this combined and spliced structure includes the first splice 21 and the second splice 22.
The first splice 21 in the present embodiment is identical as 11 structure of the first splice in embodiment 1.First splice
In 21, one first round spliced eye 212 is respectively equipped on six faces of the first splice main body 211.
With reference to Fig. 5, the second splice 22 includes the second splice main body 221, and the second splice main body 221 is in a rectangular parallelepiped shape
(the second splice main body 221 is in cube-shaped in the present embodiment)；One face of the second splice main body 221 is equipped with the second column
Shape protrusion 222, is respectively equipped with one second round spliced eye 223 on remaining five face, the center line of the second columnar projections 222 and the
Corresponding face is mutually perpendicular in two splice main bodys 221, the center line and the second splice main body of each second round spliced eye 223
Corresponding face is mutually perpendicular on 221.The second round spliced eye 223 in second splicing main body 221 on opposite face is mutually communicated
And center line is overlapped.The center line of the second columnar projections 222 in second splicing main body 221 and phase in the second splicing main body 221
Pair face on the center line of the second round spliced eye 223 coincide.The second columnar projections 222 are cylindric convex in the present embodiment
It rises；The cross-sectional shape of second columnar projections 222 can also be rectangle or regular polygon.
One first round spliced eye in the second columnar projections 222 and the first splice 21 on second splice 22
212 is mating；Five on remaining five first on first splice 21 round spliced eyes 212, the second splice 22 the
Two round spliced eyes 223, can be used in mating with other assemblies.
Embodiment 3
As shown in fig. 6, this combined and spliced structure includes the first splice 31 and the second splice 32.
The structure of the first splice 31 and the second splice 32 in the present embodiment with the second splice in embodiment 2
22 structures are identical.In first splice 31, in six faces of the first splice main body 311, it is convex that a face is equipped with the first column
312 are played, one first round spliced eye 313 is respectively equipped on remaining five face.In second splice 32, the second splice main body
In 321 six faces, a face is equipped with the second columnar projections 322, and one second round grafting is respectively equipped on remaining five face
Hole 323.
One first round spliced eye in the second columnar projections 322 and the first splice 31 on second splice 32
313 is mating；The first columnar projections 312 and remaining four first round spliced eyes 313, second on first splice 31 are spelled
Five second round spliced eyes 323 on fitting 32, can be used in mating with other assemblies.
Embodiment 4
As shown in fig. 7, this combined and spliced structure includes the first splice 41 and the second splice 42.
The first splice 41 in the present embodiment is identical as 22 structure of the second splice in embodiment 2.First splice
In 41, in six faces of the first splice main body 411, a face is equipped with the first columnar projections 412, distinguishes on remaining five face
Equipped with one first round spliced eye 413.
The second splice 42 in the present embodiment is identical as 12 structure of the second splice in embodiment 1.Second splice
In 42, one second columnar projections 422 are respectively equipped on six faces of the second splice main body 421.
Second columnar projections 422 on second splice 42 and one first on the first splice 41 round grafting
Hole 413 is mating；The first columnar projections 412 and remaining four first round spliced eyes 413, second on first splice 41
Remaining five the second columnar projections 422 on splice 42, can be used in mating with other assemblies.
In the combined and spliced structure of above-described embodiment 1-4, the second splice and the first splice pass through the second columnar projections
It is mating with the first round spliced eye, it is stitched together, and the first splice and the second splice can be inserted around first circle
The center line for connecing hole relatively rotates, and realizes the adjusting of angle.Moreover, the first splice and the second splice all can be with other assemblies
Splicing, forms more complicated structure.When above-mentioned first splice is connect with other assemblies, corresponding component be equipped with it is corresponding
The columnar projections that first round spliced eye matches, or equipped with the round grafting to match with corresponding first columnar projections
Hole, the component and the first splice can be relatively rotated around the center line of the first round spliced eye or the first columnar projections, be realized
Angle is freely adjusted, and keeps splicing construction or moulding more rich and varied.Equally, above-mentioned second splice is connect with other assemblies
When, corresponding component is equipped with the round spliced eye that matches with corresponding second columnar projections, or is equipped with and corresponding the
The columnar projections that two round spliced eyes match, the component and the second splice can be around the second round spliced eye or the second columns
The center line of protrusion relatively rotates, and realizes freely adjusting for angle, keeps splicing construction or moulding more rich and varied.In addition, the
For rod assemblies grafting, the cross-sectional shape of rod assemblies is rounded (can also for one round spliced eye and the second round spliced eye
For rectangle or regular polygon), rod assemblies are inserted into the first round spliced eye or the second round spliced eye, it can be achieved that rod-shaped group
Connection between part and the first splice or the second splice.
Embodiment 5
As shown in figure 8, this combined and spliced structure includes the first splice 51, the second splice 52, third splice 53
With multiple rod assemblies 54.
The first splice 51 in the present embodiment is identical as 11 structure of the first splice in embodiment 1.First splice
In 51, one first round spliced eye 512 is respectively equipped on six faces of the first splice main body 511.
The second splice 52 in the present embodiment is identical as 22 structure of the second splice in embodiment 2.Second splice
In 52, in six faces of the second splice main body 521, a face is equipped with the second columnar projections 522, distinguishes on remaining five face
Equipped with one second round spliced eye 523.
Third splice 53 in the present embodiment is identical as 12 structure of the second splice in embodiment 1.Third splice
In 53, a columnar projections 532 are respectively equipped on six faces of third splice ontology 531.
One first round spliced eye in the second columnar projections 522 and the first splice 51 on second splice 52
512 is mating；Another first circle in a columnar projections 532 and the first splice 51 on third splice 53 is inserted
It is mating to connect hole 512.
Five second circles on remaining four first round spliced eyes 512, the second splice 52 on first splice 51
Remaining five columnar projections 532 on shape spliced eye 523, third splice 53, can be used in, example mating with other assemblies
As: the first round spliced eye 512 in five rod assemblies 54 shown in Fig. 8, in three rod assemblies 54 and the first splice 51
Mating, other two rod assemblies 54 and the second round spliced eye 523 on the second splice 52 are mating.
Claims (10)
1. a kind of combined and spliced structure, it is characterised in that including the first splice and the second splice；First splice includes the
One splice main body, the first splice main body is in a rectangular parallelepiped shape；It is round that one face of the first splice main body is equipped with one first
The center line of spliced eye, the first round spliced eye is mutually perpendicular to corresponding face in the first splice main body；Second splice
Including the second splice main body, the second splice main body is in a rectangular parallelepiped shape；One face of the second splice main body is equipped with one the
Two columnar projections, the center line of second columnar projections are mutually perpendicular to corresponding face in the second splice main body, second column
Shape protrusion and the described first round spliced eye on the first splice are mating；On remaining five face of first splice main body
It is respectively equipped with one first round spliced eye or the first columnar projections, the center line of each first round spliced eye or the first columnar projections
It is mutually perpendicular to corresponding face in the first splice main body；Second splice main body is respectively equipped with one second on remaining five face
Round spliced eye or the second columnar projections, center line and the second splice master of each second round spliced eye or the second columnar projections
Corresponding face is mutually perpendicular on body.
2. combined and spliced structure according to claim 1, it is characterized in that: dividing on six faces of the first splice main body
Not She You one first round spliced eye, be respectively equipped with one second columnar projections on six faces of the second splice main body.
3. combined and spliced structure according to claim 2, it is characterized in that: on the opposite face of the first splice main body
First round spliced eye is mutually communicated and center line coincides；The first splice main body is in cube-shaped.
4. combined and spliced structure according to claim 2, it is characterized in that: second columnar projections are cylindrical bump；
The second columnar projections center line on the opposite face of the second splice main body coincides；The second splice main body is in just
Cube shape.
5. combined and spliced structure according to claim 1, it is characterized in that: dividing on six faces of the first splice main body
It She You not one first round spliced eye；In six faces of the second splice main body, a face is equipped with the second columnar projections, remaining
One second round spliced eye is respectively equipped on five faces.
6. combined and spliced structure according to claim 5, it is characterized in that: on the opposite face of the first splice main body
First round spliced eye is mutually communicated and center line coincides；The first splice main body is in cube-shaped；Second column
Shape protrusion is cylindrical bump；The second round spliced eye in the second splicing main body on opposite face is mutually communicated and center
Line is overlapped；The center line of the second columnar projections in the second splicing main body splices in main body the on opposite face with second
The center line of two round spliced eyes coincides.
7. combined and spliced structure according to claim 1, it is characterized in that: in six faces of the first splice main body,
One face is equipped with the first columnar projections, and one first round spliced eye is respectively equipped on remaining five face；Second splice main body
Six faces in, face is equipped with the second columnar projections, and one second round spliced eye is respectively equipped on remaining five face.
8. combined and spliced structure according to claim 7, it is characterized in that: first columnar projections are cylindrical bump；
The first round spliced eye in the first splicing main body on opposite face is mutually communicated and center line is overlapped；First splicing
The center of the first round spliced eye on the center line of the first columnar projections in main body and the first splicing main body on opposite face
Line coincides；Second columnar projections are cylindrical bump；The second circle in the second splicing main body on opposite face
Spliced eye is mutually communicated and center line is overlapped；The center line of the second columnar projections in the second splicing main body and the second splicing
The center line of the second round spliced eye in main body on opposite face coincides.
9. combined and spliced structure according to claim 1, it is characterized in that: in six faces of the first splice main body,
One face is equipped with the first columnar projections, and one first round spliced eye is respectively equipped on remaining five face；Second splice main body
Six faces on be respectively equipped with one second columnar projections.
10. combined and spliced structure according to claim 9, it is characterized in that: first columnar projections are cylindrical bump；
The first round spliced eye in the first splicing main body on opposite face is mutually communicated and center line is overlapped；First splicing
The center of the first round spliced eye on the center line of the first columnar projections in main body and the first splicing main body on opposite face
Line coincides；Second columnar projections are cylindrical bump；The second column on the opposite face of the second splice main body
Protrusion center line coincides；The second splice main body is in cube-shaped.
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| CN201920165237.3U CN209679506U (en) | 2019-01-30 | 2019-01-30 | A kind of combined and spliced structure |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112419860A (en) * | 2020-11-03 | 2021-02-26 | 雷梓辰 | Rod body connecting assembly and pluggable teaching aid |
| CN112419860B (en) * | 2020-11-03 | 2024-07-26 | 雷梓辰 | Rod body connecting assembly and pluggable teaching aid |
-
2019
- 2019-01-30 CN CN201920165237.3U patent/CN209679506U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112419860A (en) * | 2020-11-03 | 2021-02-26 | 雷梓辰 | Rod body connecting assembly and pluggable teaching aid |
| CN112419860B (en) * | 2020-11-03 | 2024-07-26 | 雷梓辰 | Rod body connecting assembly and pluggable teaching aid |
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