Assembly structure of rod body

Abstract

The utility model discloses an assembling structure of rod bodies, which is used for detachably connecting hollow rod bodies, and comprises a first locking part and a second locking part, and the first locking part and the second locking part can be connected or separated through rotation. The second locking part comprises an expansion body and a linkage shaft body, a through hole is formed in the expansion body in an axial penetrating mode, the linkage shaft body can penetrate into the expansion body along the through hole under the action of external force, and the expansion body can deform and expand in the radial direction after the linkage shaft body penetrates into the expansion body. According to the utility model, a plurality of rod bodies can be detachably connected, a stable connection relationship is provided, and the integrity and the use strength of the rod bodies are ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of rod material connection, in particular to an assembly structure of a rod body. Background Art

[0002] At present, various tools with rods, such as mops, usually have detachable connection structures, thereby realizing the connection and fixation of multiple rods and achieving different use lengths. For example, the mop rod that is easy to connect disclosed in patent number CN204654845U includes an upper tube body and a lower tube body, the lower end of the upper tube body is formed with an external thread, and the upper end of the lower tube body is formed with an internal thread, the internal thread and the external thread match, and at the same time, the upper tube body and the lower tube body are both made of metal tubes. This type of connection structure requires the formation of internal and external threads on the rod body, which affects the integrity and use strength of the rod body. Utility Model Content

[0003] The utility model provides an assembly structure of a rod body in order to avoid the deficiencies in the prior art.

[0004] The utility model solves the technical problem by adopting the following technical scheme: an assembly structure of a rod body, which is used for detachable connection between hollow rod bodies, the assembly structure of the rod body includes a first locking part and a second locking part, the first locking part and the second locking part can be connected or separated by rotation, the second locking part includes an expansion body and a linkage shaft body, the expansion body is axially penetrated by a through hole, the linkage shaft body can penetrate into the expansion body along the through hole under the action of external force, and the expansion body can deform and expand in the radial direction after the linkage shaft body penetrates.

[0005] In several embodiments, a deformation groove is provided on the expansion body, the deformation groove is communicated with the through hole, and the deformation groove has a tendency to expand after the linkage shaft body penetrates into the expansion body.

[0006] In several embodiments, the expansion body includes a first expansion unit and a second expansion unit, the deformation groove axially penetrates the first expansion unit and the second expansion unit, an opening is opened between the first expansion unit and the second expansion unit, the first expansion unit is for the linkage shaft to penetrate, and the second expansion unit is for the first locking part to penetrate.

[0007] In several embodiments, the first locking portion includes a locking head, and the locking head is threadably engaged with the second expansion unit.

[0008] In several embodiments, the linkage shaft body includes an end portion and a shaft portion that are coaxially arranged, the outer diameter of the end portion is larger than the outer diameter of the shaft portion, and the shaft portion is used to penetrate the first expansion unit.

[0009] In several embodiments, the second locking portion is disposed in the hollow rod body, and the linkage shaft body can move axially along the hollow rod body and penetrate into the expansion body under the action of external force. After the linkage shaft body penetrates, the expansion body can expand to abut against the inner wall of the hollow rod body, and thereby be fixed at any position of the hollow rod body.

[0010] In several embodiments, a pushing rod is further included, and the pushing rod is used to push the second locking portion into the hollow rod and push the linkage shaft into the expansion body.

[0011] In several embodiments, the first locking portion is disposed at one end of the hollow rod body, and the two hollow rod bodies are connected via the first locking portion and the second locking portion.

[0012] In several embodiments, the expansion body and the linkage shaft are integrally formed, a connecting rib is provided between the expansion body and the linkage shaft, and the expansion body can be separated from the connecting rib to the inside of the expansion body under the action of external force.

[0013] In several embodiments, the expansion body and the linkage shaft are split structures.

[0014] The beneficial effects of the utility model are:

[0015] The utility model can realize detachable connection between multiple rod bodies and provide a stable connection relationship.

[0016] The utility model can freely select the position of the second locking portion according to needs, provides more size options, and has wider applicability.

[0017] The first locking part and the second locking part of the utility model are both located inside the rod body after the connection is completed, avoiding the risk of being exposed to the outside and being damaged, and the rod body is not processed with other structures such as threads, thereby ensuring the integrity and use strength of the rod body. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The drawings described herein are for illustrative purposes only of selected embodiments and do not represent all possible implementations, and should not be considered to limit the scope of the present invention.

[0019] Figure 1 The structure of the hollow rod body in the embodiment 1 is schematically shown in a separated state;

[0020] Figure 2 Schematically shows Figure 1 The local amplification structure of

[0021] Figure 3 The structure of the hollow rod body in the embodiment 1 in a connected state is schematically shown;

[0022] Figure 4 Schematically shows Figure 3 The local amplification structure of

[0023] Figure 5 The enlarged structure of the second locking portion in Embodiment 1 is schematically shown;

[0024] Figure 6 Schematically shows Figure 5 The cross-sectional structure of

[0025] Figure 7 The assembly method of the hollow rod body, the first locking part and the second locking part in Example 1 is schematically shown;

[0026] Figure 8 The enlarged structure of the second locking portion in Embodiment 2 is schematically shown;

[0027] Fig. 9 The structure of the hollow rod body in the connected state in Example 2 is schematically shown;

[0028] Fig.10 Schematically shows Fig. 9 The local enlarged structure. DETAILED DESCRIPTION

[0029] Below, embodiments of the present invention are described in detail with reference to the accompanying drawings. To make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0030] Therefore, the following detailed description of the embodiments of the present invention provided in conjunction with the accompanying drawings is not intended to limit the scope of the present invention for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in the field without making creative work are within the scope of protection of the present invention.

[0031] Example 1

[0032] like Figure 1-Figure 6As shown, the present embodiment provides an assembly structure of a rod body for detachably connecting hollow rod bodies 30. The assembly structure of the rod body includes a first locking portion 10 and a second locking portion 20. The first locking portion 10 and the second locking portion 20 can be connected or separated by rotation. The second locking portion 20 includes an expansion body 21 and a linkage shaft body 22. The expansion body 21 is axially penetrated with a through hole. The linkage shaft body 22 can penetrate into the expansion body 21 along the through hole under the action of an external force. The expansion body 21 can deform and expand in a radial direction after the linkage shaft body 22 penetrates. Specifically, the expansion body 21 and the linkage shaft body 22 are integrally formed. A connecting rib 23 is provided between the expansion body 21 and the linkage shaft body 22. The expansion body 21 can be detached from the connecting rib 23 to the inside of the expansion body 21 under the action of an external force.

[0033] The expansion body 21 is provided with a deformation groove 201 , which is communicated with the through hole. After the linkage shaft 22 penetrates into the expansion body 21 , the deformation groove 201 has a tendency to expand.

[0034] Furthermore, the expansion body 21 includes a first expansion unit 211 and a second expansion unit 212, the deformation groove 201 axially penetrates the first expansion unit 211 and the second expansion unit 212, an opening 213 is provided between the first expansion unit 211 and the second expansion unit 212, the first expansion unit 211 is for the linkage shaft 22 to penetrate, the second expansion unit 212 is for the first locking portion 10 to penetrate, the first locking portion 10 includes a locking head 11, the locking head 11 is threadedly matched with the second expansion unit 212, that is, the locking head 11 has an external thread, and the second expansion unit 212 has an internal thread.

[0035] Among them, the first locking part 10 and the hollow rod body 30 can be directly plugged in and then riveted and fixed, or they can also be connected by threaded fitting. The first locking part 10 is detachably arranged at one end 221 of the hollow rod body 30, and the two hollow rod bodies 30 are connected by the first locking part 10 and the second locking part 20.

[0036] Moreover, the linkage shaft body 22 includes an end portion 221 and a shaft portion 222 which are coaxially arranged. The outer diameter of the end portion 221 is larger than the outer diameter of the shaft portion 222. The shaft portion 222 is used to penetrate the first expansion unit 211. The outer peripheral surface of the end portion 221 is in contact with the inner side surface of the hollow rod body 30.

[0037] Furthermore, the second locking portion 20 is arranged in the hollow rod body 30, and the linkage shaft body 22 can move along the axial direction of the hollow rod body 30 and penetrate into the expansion body 21 under the action of external force. After the linkage shaft body 22 penetrates, the expansion body 21 can expand to abut against the inner wall of the hollow rod body 30, and thus be fixed at any position of the hollow rod body 30.

[0038] Meanwhile, a pushing rod 40 is also included, and the pushing rod 40 is used to push the second locking portion 20 into the hollow rod 30 and push the linkage shaft 22 into the expansion body 21 .

[0039] like Figure 7 As shown, during the assembly of the utility model, the second locking portion 20 is first pushed into the hollow rod body 30 through a T-shaped push rod 40 and pushed to the desired position, which is determined by the size of the push rod 40. Push rods 40 of different lengths can be used to push at different positions. Subsequently, the first push rod 40 is kept stationary, and another push rod 40 is inserted from the other end of the hollow rod body 30 until it contacts the end 221 of the linkage shaft body 22. After force is continuously applied until the connecting rib 23 is broken, the shaft portion 222 of the linkage shaft body 22 is inserted into the first expansion unit 211 of the expansion body 21 to achieve an interference fit. The first expansion unit 211 expands outwards until it abuts against the inner wall of the hollow rod body 30 and is tightly attached. As a result, the second locking portion 20 is fixed at this position and cannot move further. Then the first locking portion 10 is installed into the end of the hollow rod body 30. The assembled hollow rod body 30 can be screwed together with another identical hollow rod body 30.

[0040] Example 2

[0041] like Figure 8-Figure 10 As shown, at this time, the expansion body 21 and the linkage shaft body 22 are a split structure. During assembly, the expansion body 21 is first pushed into the hollow rod body 30 through a T-shaped push rod 40 and pushed to the desired position. Subsequently, the first push rod 40 is kept stationary, and another push rod 40 is inserted from the other end of the hollow rod body 30 to push the linkage shaft body 22 toward the expansion body 21. The force is continued to be applied until the shaft portion 222 of the linkage shaft body 22 penetrates into the first expansion unit 211 of the expansion body 21 to achieve an interference fit. The first expansion unit 211 expands outward until it abuts against the inner wall of the hollow rod body 30, thereby fixing the second locking portion 20 at this position and unable to move further. Then the first locking portion 10 is installed into the end of the hollow rod body 30. The assembled hollow rod body 30 can be screwed together with another identical hollow rod body 30.

[0042] All the methods described herein can be performed in any suitable order. Any and all examples used, or exemplary language provided herein (such as "for example") are merely to better illustrate the present invention, and are not intended to limit the scope of the present invention, unless the claims are included. The language in the detailed description should not be understood as indicating any essential factors for practicing the present invention that are not claimed.

[0043] The present invention describes preferred embodiments, including the best way to carry out the present invention known to the inventor. Of course, variations of these preferred embodiments will be apparent to those skilled in the art. The inventors anticipate that skilled artisans may use such variations as appropriate, and the inventors point out that the present invention may be implemented in other ways than those specifically described herein. Therefore, the present invention includes all improvements included in the spirit and scope of the present invention as defined by the claims. Moreover, unless otherwise stated or clearly contradictory in content, the present invention includes any of the above factors and all possible variations thereof.

Claims

1. A rod assembly structure, characterized in that: The invention is used for detachable connection between hollow rod bodies (30), wherein the assembly structure of the rod body comprises a first locking portion (10) and a second locking portion (20), wherein the first locking portion (10) and the second locking portion (20) can be connected or separated by rotation, wherein the second locking portion (20) comprises an expansion body (21) and a linkage shaft body (22), wherein the expansion body (21) is provided with a through hole axially extending therethrough, wherein the linkage shaft body (22) can penetrate into the expansion body (21) along the through hole under the action of an external force, and wherein the expansion body (21) can deform and expand in a radial direction after the linkage shaft body (22) penetrates therethrough.

2. The rod assembly structure according to claim 1, characterized in that: The expansion body (21) is provided with a deformation groove (201), the deformation groove (201) is communicated with the through hole, and the deformation groove (201) has a tendency to expand after the linkage shaft (22) penetrates the expansion body (21).

3. The rod assembly structure according to claim 2, characterized in that: The expansion body (21) comprises a first expansion unit (211) and a second expansion unit (212); the deformation groove (201) axially penetrates the first expansion unit (211) and the second expansion unit (212); an opening (213) is provided between the first expansion unit (211) and the second expansion unit (212); the first expansion unit (211) is for the linkage shaft (22) to penetrate, and the second expansion unit (212) is for the first locking portion (10) to penetrate.

4. The rod assembly structure according to claim 3, characterized in that: The first locking portion (10) comprises a locking head (11), and the locking head (11) is threadably engaged with the second expansion unit (212).

5. The rod assembly structure according to claim 4, characterized in that: The linkage shaft body (22) comprises an end portion (221) and a shaft portion (222) which are coaxially arranged, the outer diameter of the end portion (221) is larger than the outer diameter of the shaft portion (222), and the shaft portion (222) is used to penetrate the first expansion unit (211).

6. The rod assembly structure according to claim 5, characterized in that: The second locking portion (20) is arranged in the hollow rod body (30); the linkage shaft body (22) can move along the axial direction of the hollow rod body (30) and penetrate into the expansion body (21) under the action of external force; the expansion body (21) can expand to abut against the inner wall of the hollow rod body (30) after the linkage shaft body (22) penetrates, and is thereby fixed at any position of the hollow rod body (30).

7. The rod assembly structure according to claim 6, characterized in that: It also includes a pushing rod body (40), wherein the pushing rod body (40) is used to push the second locking portion (20) into the hollow rod body (30) and to push the linkage shaft body (22) into the expansion body (21).

8. The rod assembly structure according to claim 7, characterized in that: The first locking portion (10) is arranged at one end (221) of the hollow rod body (30), and the two hollow rod bodies (30) are connected via the first locking portion (10) and the second locking portion (20).

9. The rod assembly structure according to claim 1, characterized in that: The expansion body (21) and the linkage shaft (22) are integrally formed, a connecting rib (23) is provided between the expansion body (21) and the linkage shaft (22), and the expansion body (21) can be separated from the connecting rib (23) to the inside of the expansion body (21) under the action of external force.

10. The rod assembly structure according to claim 1, characterized in that: The expansion body (21) and the linkage shaft body (22) are split structures.

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