Connecting structure

Abstract

The utility model provides a connecting structure which comprises an upper pipe and a lower pipe. Lowering a pipe; the connecting unit comprises an inner sleeve, a movable rod, a movable sleeve and a positioning unit; the inner sleeve is fixed in the lower pipe, an accommodating part is arranged on the inner sleeve, and the positioning unit is arranged in the accommodating part; the movable rod is connected in the inner sleeve in a sleeved mode, the movable rod is provided with a positioning part, and when the positioning part is matched with the positioning unit, the positioning unit is kept at a first position through the positioning part; the upper pipe is provided with an inserting part, the inserting part is connected with the inner sleeve in an inserting mode, a positioning hole is formed in the inserting part, and after the inserting part is matched with the connecting unit, the positioning unit is located at the second position, and at least part of the positioning unit is clamped into the positioning hole; the movable sleeve is arranged outside the inner sleeve in a sleeving mode, a limiting part is arranged on the movable sleeve, and after the positioning unit is at least partially clamped into the positioning hole, the limiting part abuts against the positioning unit.

Description

Technical Field

[0001] The utility model relates to a connection structure. Background Art

[0002] In order to reduce the packaging size or storage size of mops, brooms, dusters, etc. in the prior art, the handles of mops, brooms, dusters, etc. are usually configured to be telescopic or segmented.

[0003] The Chinese utility model with the authorization announcement number CN203516331U and the authorization announcement date 2014.04.02 discloses a jumping ball type telescopic rod, which is used in cleaning tools such as mops and dusters, and includes an inner sleeve, an outer tube, and a jumping ball component; the outer tube is movably sleeved outside the inner sleeve, the inner sleeve and the outer tube can be relatively moved axially, and an outer tube clamping hole is opened on the outer tube; the jumping ball component is fixed in the inner sleeve, the jumping ball component includes an elastic body and a jumping ball, the jumping ball is fixed on the elastic body, and the jumping ball cooperates with the outer tube clamping hole; the characteristics are: the inner sleeve and the outer tube are both round tubes; the inner sleeve is also included, the inner sleeve is fixed in the outer tube and located outside the inner sleeve, and a limiting groove is opened on the inner sleeve along the axial direction, and the jumping ball is slidably connected in the limiting groove. This structure connected by jumping beads is easy to slip off when it is used, that is, the connection between the connecting tubes is not firm enough, which affects the use experience. Utility Model Content

[0004] The purpose of the utility model is to overcome the above-mentioned deficiencies in the prior art and to provide a connection structure with a reasonable structural design.

[0005] The technical solution adopted by the embodiment of the utility model to solve the above-mentioned problem is: a connection structure, characterized in that it includes:

[0006] top tube;

[0007] down tube; and

[0008] A connecting unit, the connecting unit comprising an inner sleeve, a movable rod, a movable sleeve and a positioning unit; the inner sleeve is fixed in the lower tube, and a receiving portion is provided on the inner sleeve, and the positioning unit is provided in the receiving portion; the movable rod is sleeved in the inner sleeve, and the movable rod has a positioning portion, and when the positioning portion cooperates with the positioning unit, it keeps the positioning unit in a first position;

[0009] The upper tube has a plug-in portion, the plug-in portion is plugged with the inner sleeve, and the plug-in portion has a positioning hole. When the plug-in portion is matched with the connecting unit, the positioning unit is located at a second position, and the positioning unit is at least partially inserted into the positioning hole;

[0010] The movable sleeve is slidably mounted outside the inner sleeve. A limiting portion is arranged on the movable sleeve. After the positioning unit is at least partially inserted into the positioning hole, the limiting portion abuts against the positioning unit to limit the positioning unit from being separated from the positioning hole.

[0011] The embodiment of the utility model further comprises a first elastic member, which is disposed between the movable rod and the inner sleeve and provides an elastic force to the movable rod.

[0012] The embodiment of the utility model further comprises a second elastic member, which abuts against the movable sleeve and provides an elastic force to the movable sleeve.

[0013] The movable sleeve of the utility model embodiment is provided with a clearance groove and a convex portion, the clearance groove and the convex portion are arranged on the circumference of the inner wall of the movable sleeve, and the inner surface of the convex portion is flush with the inner surface of the limiting portion.

[0014] The positioning unit described in the embodiment of the utility model is spherical.

[0015] The diameter of the positioning unit in the embodiment of the utility model is larger than the diameter of the positioning hole.

[0016] In the embodiment of the utility model, an elastic wall is arranged on the wall of the inner sleeve, and the end of the elastic wall forms the accommodating portion.

[0017] The embodiment of the utility model further comprises a fixing sleeve, which is sleeved on the outside of the lower tube and has a positioning column passing through the lower tube and the inner sleeve.

[0018] In the embodiment of the utility model, one end of the second elastic member abuts against the fixed sleeve, and the other end thereof abuts against the side of the limiting portion of the movable sleeve.

[0019] In the embodiment of the utility model, one end of the first elastic member abuts against the inner sleeve, and the other end thereof abuts against the positioning portion of the movable rod, and a head is provided at the other end of the movable rod opposite to the positioning portion.

[0020] Compared with the prior art, the utility model has one or more of the following advantages or effects: simple structure and reasonable design; through the provision of the movable sleeve, after the lower tube and the upper tube are connected, the limiting part of the movable sleeve can limit the locating unit from being separated from the locating hole, thereby preventing the upper tube and the lower tube from being separated, and ensuring the reliability of the connection between the upper tube and the lower tube. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0022] Figure 1 The three-dimensional structure diagram of the connection structure in the embodiment of the utility model Figure 1 .

[0023] Figure 2 It is a schematic diagram of the exploded structure of the connection structure in the embodiment of the utility model.

[0024] Figure 3 It is a schematic cross-sectional structural diagram of the connection structure in an embodiment of the utility model, showing the state after the upper tube and the lower tube are connected.

[0025] Figure 4 It is a schematic cross-sectional structural diagram of the connection structure in the embodiment of the utility model, showing the state after the upper tube and the lower tube are separated.

[0026] Figure 5 The three-dimensional structure diagram of the connection structure in the embodiment of the utility model Figure 2 .

[0027] Figure 6 It is a schematic cross-sectional view of the connection structure in the embodiment of the utility model, showing the state of the upper tube and the lower tube after being prevented from opening.

[0028] Figure 7 It is a three-dimensional structural schematic diagram of the fixed sleeve. DETAILED DESCRIPTION

[0029] In order to facilitate the understanding of the present invention, the present invention will be described in more detail below with reference to the relevant drawings. The preferred embodiments of the present invention are shown in the drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described below. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thoroughly and comprehensively understood. The directions such as "axial direction", "above", "below", etc. in the following text are all for the purpose of more clearly indicating the structural position relationship and are not limitations on the present invention. In the present invention, the "vertical", "horizontal" and "parallel" are defined as: including the situation of ±10% based on the standard definition. For example, vertical usually refers to an angle of 90 degrees relative to the reference line, but in the present invention, vertical refers to the situation within 80 to 100 degrees.

[0030] See also Figures 1 to 7The connection structure of this embodiment includes an upper tube 1, a lower tube 2 and a connection unit 3.

[0031] When the upper tube 1 and the lower tube 2 in this embodiment are connected, the two are coaxially or approximately coaxially arranged.

[0032] The connection unit 3 in this embodiment is configured to connect the upper tube 1 and the lower tube 2. The connection unit 3 includes an inner sleeve 31, a movable rod 32, a movable sleeve 33 and a positioning unit 34; the inner sleeve 31 is fixed in the lower tube 2, and a receiving portion 301 is provided on the inner sleeve 31, and the positioning unit 34 is provided in the receiving portion 301; the movable rod 32 is sleeved in the inner sleeve 31, and the movable rod 32 has a positioning portion 321, and when the positioning portion 321 cooperates with the positioning unit 34, it keeps the positioning unit 34 in a first position.

[0033] The upper tube 1 in this embodiment has an inserting portion 11, which is inserted into the inner sleeve 31, and has a positioning hole 111. When the inserting portion 11 is matched with the connecting unit 3, the positioning unit 34 is located at the second position, and the positioning unit 34 is at least partially inserted into the positioning hole 111, so that the positioning unit 34 can realize the positioning connection between the upper tube 1 and the inner sleeve 31.

[0034] The movable sleeve 33 of this embodiment can be slidably sleeved outside the inner sleeve 31, and a limiting portion 331 is provided on the movable sleeve 33. After the positioning unit 34 is at least partially inserted into the positioning hole 111, the limiting portion 331 abuts against the positioning unit 34 to limit the positioning unit 34 from being separated from the positioning hole 111. Through the provision of the movable sleeve 33, after the lower tube 2 and the upper tube 1 are connected, the limiting portion 331 of the movable sleeve 33 can limit the positioning unit 34 from being separated from the positioning hole 111, thereby preventing the upper tube 1 and the lower tube 2 from being separated, and ensuring the reliability of the connection between the upper tube 1 and the lower tube 2.

[0035] This embodiment further includes a first elastic member 4, which is disposed between the movable rod 32 and the inner sleeve 31 and provides an elastic force to the movable rod 32. The first elastic member 4 can be a spring (compression spring) in the prior art. The first elastic member 4 applies an elastic force to the movable rod 32, so that the movable rod 32 can ensure that its positioning portion 321 restricts the positioning unit 34 when there is no external force.

[0036] This embodiment further includes a second elastic member 5, which abuts against the movable sleeve 33 and provides an elastic force to the movable sleeve 33. The second elastic member 5 can be a spring (compression spring) in the prior art. The second elastic member 5 applies an elastic force to the movable sleeve 33, so that the movable sleeve 33 can ensure that its limiting portion 331 limits the positioning unit 34 when there is no external force.

[0037] In the present embodiment, the movable sleeve 33 is provided with a clearance groove 332 and a convex portion 333, the clearance groove 332 and the convex portion 333 are arranged on the circumference of the inner wall of the movable sleeve 33, and the inner surface of the convex portion 333 is flush with the inner surface of the limiting portion 331. When the clearance groove 332 corresponds to the positioning unit 34 (the positioning unit 34 corresponds to the clearance groove 332 in the axial direction of the movable sleeve 33), the movable sleeve 33 is pushed, and when the positioning unit 34 is inserted into the clearance groove 332, the positioning unit 34 is disengaged from the positioning hole 111 of the upper tube 1, and the upper tube 1 can be disengaged from the connecting unit 3 at this time, so as to realize the separation of the upper tube 1 and the lower tube 1.

[0038] The positioning unit 34 of this embodiment is spherical. For example, the positioning unit 34 can be made of a steel ball.

[0039] In this embodiment, the diameter of the positioning unit 34 is larger than the diameter of the positioning hole 111 .

[0040] In this embodiment, an elastic wall 311 is disposed on the wall of the inner sleeve 31 , and the end of the elastic wall 311 forms the accommodating portion 301 .

[0041] This embodiment further includes a fixing sleeve 6 , which is sleeved on the outside of the lower tube 2 and has a positioning column 61 passing through the lower tube 2 and the inner sleeve 31 .

[0042] In this embodiment, one end of the second elastic member 5 abuts against the fixed sleeve 6 , and the other end thereof abuts against the side of the limiting portion 331 of the movable sleeve 33 .

[0043] The fixing sleeve 6 can realize the connection between the lower tube 2 and the inner sleeve 31 on one hand, and can provide an installation environment for the second elastic member 5 on the other hand.

[0044] The fixing sleeve 6 is annular and has a notch 62 so that its inner diameter can be changed due to its own elasticity to facilitate installation.

[0045] In this embodiment, one end of the first elastic member 4 abuts against the inner sleeve 31, and the other end thereof abuts against the positioning portion 321 of the movable rod 32. The movable rod 32 is provided with a head 322 at the other end thereof opposite to the positioning portion 321. The head 322 includes a first wall and a second wall, and the first wall and the second wall are spaced apart so that the outer dimensions of the head 322 can be compressed to facilitate insertion into the inner sleeve 31.

[0046] In this embodiment, a retaining spring 7 is provided on the inner sleeve 31 .

[0047] The use principle of this embodiment:

[0048] Locking process: When the upper tube 1 is inserted, the movable rod 32 is pushed inwards. When a "click" sound is heard after a certain distance, it means that the movable rod 32 loses the limit of the positioning unit 34. The positioning unit 34 falls into the positioning hole 111 of the upper tube 1 and loses the limit of the movable sleeve 33. The movable sleeve 33 rebounds to the limit position of the retaining spring 7 by the second elastic member 5. As the movable sleeve 33 returns to its position, the positioning unit 34 is limited by the limiting portion 331 of the movable sleeve 33 in the positioning hole 111 of the upper tube 1, thereby achieving the purpose of locking.

[0049] Opening process: when the hand holds the movable sleeve 33 and slides toward the lower tube 2, the positioning unit 34 and the upper tube 1 are no longer limited. Under the action of the first elastic member 4 rebounding, the movable rod 32 causes the upper tube 1 to withdraw from the connecting unit 3.

[0050] Anti-opening function (see Figure 5 and Figure 6 ): In order to prevent the movable sleeve 33 from accidentally sliding during use and causing the pipes to automatically separate, after the pipes are successfully docked, the movable sleeve 33 can be rotated 90 degrees to achieve this. When the movable sleeve 9 is turned to the unlocking position, there is a clearance groove 332 inside the movable sleeve 33. Sliding the movable sleeve 33 toward the lower pipe 2 can achieve the separation of the butted pipes. When the movable sleeve 33 is turned to the locking position, there is no clearance groove 332 inside the movable sleeve 33. Sliding the movable sleeve 33 toward the lower pipe 1 will also fail.

[0051] The above contents described in this specification are merely examples of the present utility model. Those skilled in the art of the present utility model may make various modifications or additions to the specific embodiments described, or replace them in similar ways, as long as they do not deviate from the contents of the present utility model specification or exceed the scope defined in the claims, they shall all fall within the protection scope of the present utility model.

Claims

1. A connection structure, characterized in that: include: top tube; Down tube; as well as A connecting unit, the connecting unit comprising an inner sleeve, a movable rod, a movable sleeve and a positioning unit; the inner sleeve is fixed in the lower tube, and a receiving portion is provided on the inner sleeve, and the positioning unit is provided in the receiving portion; the movable rod is sleeved in the inner sleeve, and the movable rod has a positioning portion, and when the positioning portion cooperates with the positioning unit, it keeps the positioning unit in a first position; The upper tube has a plug-in portion, the plug-in portion is plugged with the inner sleeve, and the plug-in portion has a positioning hole. When the plug-in portion is matched with the connecting unit, the positioning unit is located at a second position, and the positioning unit is at least partially inserted into the positioning hole; The movable sleeve is slidably mounted outside the inner sleeve. A limiting portion is arranged on the movable sleeve. After the positioning unit is at least partially inserted into the positioning hole, the limiting portion abuts against the positioning unit to limit the positioning unit from being separated from the positioning hole.

2. The connection structure according to claim 1, characterized in that: It also includes a first elastic member, which is arranged between the movable rod and the inner sleeve and provides an elastic force to the movable rod.

3. The connection structure according to claim 1, characterized in that: It also includes a second elastic member, which abuts against the movable sleeve and provides an elastic force to the movable sleeve.

4. The connection structure according to claim 1, characterized in that: A clearance groove and a convex portion are arranged in the movable sleeve, the clearance groove and the convex portion are arranged in the circumferential direction of the inner wall of the movable sleeve, and the inner surface of the convex portion is flush with the inner surface of the limiting portion.

5. The connection structure according to claim 1, characterized in that: The positioning unit is spherical.

6. The connection structure according to claim 5, characterized in that: The diameter of the positioning unit is greater than the diameter of the positioning hole.

7. The connection structure according to claim 1, characterized in that: An elastic wall is arranged on the wall of the inner sleeve, and the end of the elastic wall forms the accommodating portion.

8. The connection structure according to claim 3, characterized in that: It also includes a fixing sleeve, which is sleeved on the outside of the lower tube and has a positioning column passing through the lower tube and the inner sleeve.

9. The connection structure according to claim 8, characterized in that: One end of the second elastic member abuts against the fixed sleeve, and the other end thereof abuts against the side of the limiting portion of the movable sleeve.

10. The connection structure according to claim 2, characterized in that: One end of the first elastic member abuts against the inner sleeve, and the other end thereof abuts against the positioning portion of the movable rod. A head is arranged at the other end of the movable rod opposite to the positioning portion.

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