CN220929886U - Mortise and tenon joint structure - Google Patents
Mortise and tenon joint structure Download PDFInfo
- Publication number
- CN220929886U CN220929886U CN202321862547.3U CN202321862547U CN220929886U CN 220929886 U CN220929886 U CN 220929886U CN 202321862547 U CN202321862547 U CN 202321862547U CN 220929886 U CN220929886 U CN 220929886U
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- Prior art keywords
- mortise
- tenon
- wall
- outer end
- face
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- 230000003068 static effect Effects 0.000 abstract description 8
- 238000000034 method Methods 0.000 abstract description 5
- 238000012423 maintenance Methods 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 230000002093 peripheral effect Effects 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 7
- 238000003466 welding Methods 0.000 description 4
- 238000001125 extrusion Methods 0.000 description 3
- 238000009833 condensation Methods 0.000 description 2
- 230000005494 condensation Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005219 brazing Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 210000001503 joint Anatomy 0.000 description 1
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- Mutual Connection Of Rods And Tubes (AREA)
Abstract
The utility model relates to a mortise and tenon joint structure; the mortise and tenon connection structure comprises mortise holes and tenons which are spliced; the inner wall of the mortise hole is inclined inwards, and the inner end is large and the outer end is small; the tenon is of a step shaft structure and comprises an outer wall of the tenon and a peripheral shaft; the outer wall of the tenon is in interference fit with the inner wall of the mortise; an interference fit is a detachable connection; the temperature difference method is adopted during assembly, namely the outer wall of the tenon is cooled, and the mortise is heated; the inner wall of the mortise is used for extruding the outer wall surface of the tenon so as to realize mechanical static connection of the mortise and the tenon. Compared with the prior art, the utility model has the advantages of simple structure, high production and maintenance efficiency and low cost.
Description
Technical Field
The utility model relates to the technical field of mechanical static connection, in particular to a mortise and tenon joint structure.
Background
Mechanically static connection refers to a connection in which the parts being connected do not undergo relative movement during operation of the machine. Common mechanical static connections include threaded connections, welding, riveting, cementing, and the like. The threaded connection is represented by a bolt and a screw; welding is represented by brazing; riveting is represented by rivets. Wherein the threaded connection is a detachable connection; welding, riveting and cementing are then non-detachable connections. The threaded connection is widely used for welding, riveting and cementing. The connecting structure adopted by the threaded connection is a threaded structure.
Disclosure of utility model
The utility model aims to provide a novel connecting structure and a mortise and tenon connecting structure.
The technical scheme of the utility model is as follows: a mortise and tenon connection structure is used for connecting pipes and comprises mortise holes and tenons which are spliced; the inner wall of the mortise hole is inclined inwards, and the inner end is large and the outer end is small; the tenon comprises a tenon outer wall, a tenon inner end surface and a tenon outer end surface; the outer wall of the tenon is in interference fit with the inner wall of the mortise; an interference fit is a detachable connection; the temperature difference method is adopted during assembly, namely the outer wall of the tenon is cooled, and the mortise is heated; the tenon is inserted into the mortise, so that the inner wall of the mortise extrudes the outer wall surface of the tenon, and the mechanical static connection between the mortise and the tenon is realized.
Preferably, the length of the outer wall of the tenon is more than or equal to the depth of the mortise, and the outer end surface of the tenon abuts against the inner end surface of the mortise, so that the mortise and the tenon are axially limited; the outer end face of the tenon is inclined inwards, the middle part is low, and the periphery is high; the inner end surface of the mortise is matched with the outer end surface of the tenon, and is inclined outwards, the middle is high, and the periphery is low; like this, the tenon outer end extrudees to the downthehole end face of mortise, improves the interference fit effect of tenon outer wall and downthehole wall of mortise.
Preferably, the length of the outer wall of the tenon is less than or equal to the depth of the mortise, and the outer end surface of the mortise abuts against the inner end surface of the tenon, so that the mortise and the tenon are axially limited; the outer end face of the mortise hole is inclined outwards, the middle is high, and the periphery is low; the inner end face of the tenon is inclined inwards, the middle is low, and the periphery is high; the inner end face of the tenon is matched and corresponds to the outer end face of the mortise; like this, the outer terminal surface of mortise carries out the extrusion to tenon inner terminal surface, improves the interference fit effect of tenon outer wall and mortise inner wall.
Preferably, the outer wall of the tenon is inclined outwards, the small inner end and the large outer end are matched and correspond to the inner wall of the mortise, and the interference fit area of the side face of the outer wall of the tenon and the inner wall of the mortise can be increased, so that the mechanical connection strength of the mortise and the tenon is improved.
Further, the inner wall of the mortise hole is also provided with a parallel section A; the inner wall of the mortise of the parallel section A is parallel to the axis of the mortise; the parallel section A is arranged at the outer end of the mortise; the outer wall of the tenon is provided with a parallel section B corresponding to the parallel section A; the assembled tenon and the mortise hole form axial buckled shape condensation connection, so that the axial limit of the tenon and the mortise hole is realized, and the connection strength of the tenon and the mortise hole is increased.
Preferably, the outer edge of the outer end face of the tenon is provided with a chamfer so as to facilitate the insertion of the tenon into the mortise.
The beneficial effects of the utility model are as follows: the mortise and tenon connection structure comprises mortise holes and tenons which are spliced; the inner wall of the mortise hole is inclined inwards, and the inner end is large and the outer end is small; the tenon comprises a tenon outer wall, a tenon inner end face and a tenon outer end face; the outer wall of the tenon is in interference fit with the inner wall of the mortise; an interference fit is a detachable connection; the temperature difference method is adopted during assembly, namely the outer wall of the tenon is cooled, and the mortise is heated; the inner wall of the mortise is used for extruding the outer wall surface of the tenon so as to realize mechanical static connection of the mortise and the tenon. Compared with the prior art, the utility model has the advantages of simple structure, high production and maintenance efficiency and low cost.
Drawings
Fig. 1 is an axial sectional view of a open mortise mortise connection structure of the present utility model in a first embodiment;
FIG. 2 is an enlarged view of I of FIG. 1;
fig. 3 is a radial sectional view of the present open mortise mortise connection structure in the first embodiment;
fig. 4 is an axial sectional view of the present open mortise mortise connection structure in the second embodiment;
Fig. 5 is an enlarged view of II of fig. 4;
fig. 6 is a radial sectional view of the present open mortise mortise connection structure in the second embodiment;
fig. 7 is an axial sectional view of the present open mortise mortise connection structure in the third embodiment;
Fig. 8 is an enlarged view of III of fig. 7;
Fig. 9 is a radial sectional view of the open mortise mortise connection structure of the present utility model in the third embodiment;
in the figure: 01. pipe A, pipe B, a 1 mortise hole, an 11 mortise hole inner wall, 111 parallel Duan Jia, 12 mortise hole end faces, 13 mortise hole outer end faces, 2 tenons, 211 tenon outer end faces, 212 chamfers, 213 tenon outer walls, 2131 parallel sections B and 221 tenon inner end faces.
Detailed Description
Embodiment one: referring to fig. 1-3, the present embodiment is illustrated with a tube-to-tube connection; a mortise and tenon connection structure comprises mortise holes 1 and tenons 2 which are spliced; the mortise hole 1 is arranged at the end part of the pipe armor 01; the tenon 2 is arranged at the end part of the pipe B02; the pipe A01 and the pipe B02 are in butt joint; the inner wall 11 of the mortise hole is inclined inwards, and the inner end is big and the outer end is small; the tenon 2 is of a step shaft structure and comprises a tenon outer wall 213 and a peripheral shaft; the tenon outer wall 213 is in interference fit with the mortise inner wall 11; an interference fit is a detachable connection; during assembly, a temperature difference method is adopted, namely, the outer wall 213 of the tenon is cooled, and the mortise 1 is heated; the inner wall 11 of the mortise presses the surface of the outer wall 213 of the tenon so as to realize the mechanical static connection between the mortise 1 and the tenon 2.
The radial sections of the pipe A01 and the pipe B02 in the embodiment are regular hexagons; the radial sections of the mortise holes 1 and the tenons 2 are in corresponding regular hexagons.
Compared with the prior art, the utility model has the advantages of simple structure, high production and maintenance efficiency and low cost.
The length of the outer wall 213 of the tenon is less than the depth of the mortise hole 1, and the outer end face 13 of the mortise hole abuts against the inner end face 221 of the tenon; the outer end face 13 of the mortise hole is inclined outwards, the middle is high, and the periphery is low; the inner end surface 221 of the tenon is inclined inwards, the middle is low, and the periphery is high; the inner end surface 221 of the tenon is matched and corresponds to the outer end surface 13 of the mortise; thus, the outer end face 13 of the mortise extrudes the inner end face 221 of the tenon, and the interference fit effect of the outer wall 213 of the tenon and the inner wall 11 of the mortise is improved.
The outer edge of the outer end of the tenon 2 is provided with a chamfer 212 to facilitate the tenon 2 to be inserted into the mortise 1.
The working principle of the embodiment is as follows: the tenon outer wall 213 is in interference fit with the mortise inner wall 11; an interference fit is a detachable connection; during assembly, a temperature difference method is adopted, namely, the outer wall 213 of the tenon is cooled, and the mortise 1 is heated; the inner wall 11 of the mortise presses the surface of the outer wall 213 of the tenon so as to realize the mechanical static connection between the mortise 1 and the tenon 2; the outer end face 13 of the mortise hole is propped against the inner end face 221 of the tenon; the mortise outer end face 13 extrudes the tenon inner end face 221, and interference fit effect of the tenon outer wall 213 and the mortise inner wall 11 is improved.
Embodiment two: referring to fig. 4 to 6, the second embodiment is basically the same as the first embodiment, and the details are not repeated, except that: the length of the outer wall 213 of the tenon is larger than the depth of the mortise hole 1, and the outer end surface 211 of the tenon abuts against the inner end surface 12 of the mortise hole, so that the mortise hole 1 and the tenon 2 are axially limited; the outer end surface 211 of the tenon is inclined inwards, the middle is low, and the periphery is high; the inner end surface 12 of the mortise hole is matched and corresponds to the outer end surface 211 of the tenon, and is inclined outwards, the middle is high, and the periphery is low; thus, the tenon outer end surface 211 extrudes the mortise inner end surface 12, and the interference fit effect of the tenon outer wall 213 and the mortise inner wall 11 is improved.
The radial sections of the pipe A01 and the pipe B02 in the embodiment are elliptical; the radial sections of the mortise holes 1 and the tenons 2 are corresponding ellipses.
The working principle of the embodiment is as follows: the outer end surface 211 of the tenon abuts against the inner end surface 12 of the mortise so that the mortise 1 and the tenon 2 are limited axially; the tenon inner end surface 221 extrudes the mortise inner end surface 12, so that the interference fit effect of the tenon outer wall 213 and the mortise inner wall 11 is improved.
Embodiment III: referring to fig. 7 to 9, the third embodiment is basically the same as the first embodiment, and the details are not repeated, except that: the length of the outer wall 213 of the tenon=the depth of the mortise 1, the inner end surface 12 of the mortise abuts against the outer end surface 211 of the tenon, and the inner end surface 221 of the tenon abuts against the outer end surface 13 of the mortise, so that the mortise 1 and the tenon 2 are axially limited; the inner end face 12 of the mortise performs radial extrusion on the outer end face 211 of the tenon, the inner end face 221 of the tenon performs extrusion on the outer end face 13 of the mortise, and the interference fit effect of the outer wall 213 of the tenon and the inner wall 11 of the mortise is improved; the tenon outer wall 213 is inclined outwards, the inner end is small, the outer end is large, and the tenon outer wall is matched and corresponds to the mortise inner wall 11, so that the interference fit area between the side surface of the tenon outer wall 213 and the mortise inner wall 11 can be increased, and the mechanical connection strength of the mortise 1 and the tenon 2 is improved.
The radial sections of the pipe A01 and the pipe B02 in the embodiment are circular; the radial sections of the mortise holes 1 and the tenons 2 are corresponding circles.
The inner wall 11 of the mortise hole is also provided with a parallel section A111; the inner wall 11 of the mortise of the parallel section A111 is parallel to the axis of the mortise 1; the parallel section A111 is arranged at the outer end of the mortise hole 1; the tenon outer wall 213 is provided with a parallel section B2131 corresponding to the parallel Duan Jia 111; the assembled tenon 2 and the mortise hole 1 form axial buckled shape condensation connection, so that the axial limit of the tenon 2 and the mortise hole 1 is realized, and the connection strength of the tenon 2 and the mortise hole 1 is increased.
Claims (6)
1. The mortise and tenon connection structure is characterized by being used for connecting pipes and comprises mortise holes and tenons which are spliced; the inner wall of the mortise hole is inclined inwards, and the inner end is large and the outer end is small; the tenon comprises a tenon outer wall, a tenon inner end surface and a tenon outer end surface; the outer wall of the tenon and the inner wall of the mortise are in interference fit.
2. The mortise and tenon joint structure according to claim 1, characterized in that: the length of the outer wall of the tenon is more than or equal to the depth of the mortise hole; the outer end face of the tenon is inclined inwards, the middle part is low, and the periphery is high; the inner end surface of the mortise is matched with the outer end surface of the tenon, and is inclined outwards, the middle is high, and the periphery is low.
3. The mortise and tenon joint structure according to claim 1, characterized in that: the length of the outer wall of the tenon is less than or equal to the depth of the mortise hole; the outer end face of the mortise hole is inclined outwards, the middle is high, and the periphery is low; the inner end face of the tenon is inclined inwards, the middle is low, and the periphery is high; the inner end face of the tenon is matched and corresponds to the outer end face of the mortise.
4. The mortise and tenon joint structure according to claim 1, characterized in that: the outer wall of the tenon is inclined outwards, the inner end is small, the outer end is large, and the tenon is matched and corresponds to the inner wall of the mortise.
5. The mortise and tenon joint structure according to claim 4, characterized in that: the inner wall of the mortise hole is also provided with a parallel section A; the inner wall of the mortise of the parallel section A is parallel to the axis of the mortise; the parallel section A is arranged at the outer end of the mortise; the outer wall of the tenon is provided with a parallel section B corresponding to the parallel section A.
6. The mortise and tenon joint structure according to claim 1, characterized in that: the outer edge of the outer end face of the tenon is provided with a chamfer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321862547.3U CN220929886U (en) | 2023-07-17 | 2023-07-17 | Mortise and tenon joint structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321862547.3U CN220929886U (en) | 2023-07-17 | 2023-07-17 | Mortise and tenon joint structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220929886U true CN220929886U (en) | 2024-05-10 |
Family
ID=90964346
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321862547.3U Active CN220929886U (en) | 2023-07-17 | 2023-07-17 | Mortise and tenon joint structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220929886U (en) |
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2023
- 2023-07-17 CN CN202321862547.3U patent/CN220929886U/en active Active
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