Structure of rod handle of cleaning tool

Abstract

The utility model relates to a structure of a cleaning tool rod handle, which comprises a first rod handle and a second rod handle, internal threads and external threads are respectively arranged at the connecting ends of adjacent rod handles, the internal threads are arranged on the inner wall close to the end opening of the rod handle, a first annular plane part is reserved between the internal threads and the end opening of the rod handle, and the external threads are arranged on the outer surface of the contraction section of the end part of the rod handle. An annular step part is formed between the contraction section and the rod handle body, a second annular plane part is reserved between the external thread and the annular step part, a stress convex ring is arranged in the middle of the second annular plane part, and the outer diameter of the stress convex ring is matched with the inner diameter of the first annular plane part; when the two rod handles are bent after being connected, the stress position is transferred to the stress convex ring from the end opening of the rod handle, the strength of the stress convex ring is far larger than that of the end opening, and therefore the problem that the end opening of an existing threaded connection rod handle is prone to cracking is well solved under the condition that an existing basic structure is not changed and bent, and the threaded connection rod handle has the advantages of being reasonable in structure, simple and durable.

Description

TECHNICAL FIELD

[0001] The utility model relates to a cleaning tool, concretely is the structure of cleaning tool pole handle. BACKGROUND

[0002] The mop and the broom are more common in the daily cleaning tool, the mop generally includes the mop head and the mop pole handle, the mop pole handle is generally made of metal, the comprehensive cost and the weight generally the thin wall metal pipe is made into the mop pole handle, the packing and the transportation cost are considered simultaneously, the multi-section connection mode is adopted to the mop pole handle, so as to save the packing and the transportation cost, the connecting structure needs to be arranged between each section of the multi-section structure mop pole handle, the current general practice is to extrude the internal thread or the external thread at the end of the sectional mop pole handle, the thread of the extruded structure is difficult to be made to be tight, the bending resistance force is first applied to the end port of the pole handle when the sectional pole handle is stressed during use, the end port of the mop pole handle is easily cracked due to the thin wall of the mop pole handle, the consumer is easily cut, and there is a safety hazard.

[0003] In order to solve this problem, the current general practice is to enhance the strength of the end port to prevent cracking, such as the utility model patent with the announcement number CN218870207U discloses a bending-resistant mop pole handle, which comprises a first unit rod and a second unit rod connected detachably, the first unit rod has a first pipe wall, an external thread is arranged at the end of the first pipe wall, a necking is pressed at the end of the second unit rod, an internal thread is arranged at the necking, the internal thread can be matched and fixed with the external thread, the end of the first unit rod and / or the second unit rod is inwardly hemmed to form a second pipe wall, the second pipe wall and the external thread / the internal thread are located at different positions, and the length of the second pipe wall is not greater than 10mm; the utility model has the advantages that the second pipe wall is arranged to increase the strength of the mouth of the first unit rod, and to avoid the mouth of the first unit rod from expanding and even breaking when the multi-section rod is stressed.

[0004] However, the drawings of the patent show that the second pipe wall increases the pipe wall thickness, in order to make the external thread extend into the end of the unit rod and cooperate with the internal thread, the external diameter of the internal thread and the external thread is obviously smaller than that of other parts, so that the deformation amount of the junction is twice that of the normal, the deformation amount is too large, the strength of this part is reduced due to the thin pipe wall, and the part is easily broken when bent, and the second pipe wall formed by inward hemming is complicated to process, which increases the process difficulty and the processing cost. Figure 3 AND 4 It can be seen that the second pipe wall increases the pipe wall thickness, in order to make the external thread extend into the end of the unit rod and cooperate with the internal thread, the external diameter of the internal thread and the external thread is obviously smaller than that of other parts, so that the deformation amount of the junction is twice that of the normal, the deformation amount is too large, the strength of this part is reduced due to the thin pipe wall, and the part is easily broken when bent, and the second pipe wall formed by inward hemming is complicated to process, which increases the process difficulty and the processing cost. UTILITY MODEL CONTENTS

[0005] The utility model discloses a kind of structures of cleaning tool pole handle, stress convex ring is additionally provided between outer screw section and annular convex step of pole handle, when pole handle is bent after connection, pole handle will be stressed from the port of pole handle to stress convex ring, the strength of pipe wall here is far greater than the strength of port, to solve the problem that the port of existing thread connection pole handle is easy to crack without changing the existing basic structure, increase the strength of connecting portion, with the characteristics of reasonable structure, simple and durable.

[0006] To achieve the above object using the following technical solutions:

[0007] A kind of structure of cleaning tool pole handle, at least including first pole handle and second pole handle, inner thread and outer thread are respectively provided in adjacent pole handle connection end, it is characterized in that: the inner thread is arranged on the inner wall close to pole handle port, and a first annular flat part is left between inner thread and pole handle port;The outer thread is arranged on the outer surface of pole handle end, and stress convex ring and contraction section are sequentially arranged on the outer surface of pole handle end from outer thread to the direction of another end of pole handle, annular step part is formed between contraction section and pole handle body, the outer diameter of contraction section is slightly smaller than the inner diameter of first annular flat part, the outer diameter of stress convex ring is matched with the inner diameter of first annular flat part, when adjacent pole handle is screwed, first annular flat part is wrapped with contraction section, and the port of first annular flat part is suspended.

[0008] Third annular flat part is left between outer thread and contraction section port, and the outer diameter of third annular flat part is slightly smaller than the inner diameter of inner thread.

[0009] The length of first annular flat part is less than the sum of the length of stress convex ring and contraction section.

[0010] The inner thread is arranged on the inner wall of lower end of first pole handle, and the contraction section is arranged on the upper end of second pole handle.

[0011] The utility model adds stress convex ring between existing outer thread and annular step part, when adjacent pole handle is screwed, first annular flat part will be in contact with stress convex ring, when pole handle is bent, adjacent pole handle will move the stress of original port to stress convex ring, the strength of first annular flat part corresponding stress convex ring is far greater than the strength of port, and the port of first annular flat part will not be stressed, so that the problem that the port of existing structure pole handle is easy to crack can be solved well. ACCURACY OF DRAWINGS

[0012] Figure 1 It is internal structure schematic diagram of the utility model;

[0013] Figure 2 It is A enlarged schematic diagram of the utility model Figure 1 ;

[0014] Figure 3 It is an enlarged schematic view of the lower end of the first pole handle of the utility model;

[0015] Figure 4 It is an enlarged schematic view of the upper end of the second pole handle of the utility model.

[0016] Figure 5 It is an enlarged schematic view of another embodiment of the utility model. DETAILED DESCRIPTION

[0017] As Figures 1-4 shown, a structure of a cleaning tool pole handle, comprising a first pole handle 1 and a second pole handle 2, the lower end of the first pole handle 1 is provided with an internal thread (3), the internal thread 3 is arranged on the inner wall close to the first pole handle port, a first annular flat section 4 is left between the internal thread 3 and the pole handle port; the upper end of the second pole handle 2 is provided with an external thread 5, a stress convex ring (9) and a contraction section (6) are further arranged in sequence on the outer surface of the upper end of the pole handle from the external thread (5) downwards, an annular step section (7) is formed between the contraction section (6) and the pole handle body, the outer diameter of the contraction section 6 is slightly smaller than the inner diameter of the first annular flat section 4, the outer diameter of the stress convex ring 9 matches the inner diameter of the first annular flat section 4, the length of the first annular flat section (4) is less than the sum of the lengths of the stress convex ring 9 and the contraction section 6; a third annular flat section 10 is left between the external thread 5 and the upper port of the second pole handle, the outer diameter of the third annular flat section 10 is slightly smaller than the inner diameter of the internal thread 3.

[0018] The utility model adds a stress convex ring 7 between the existing external thread and the annular step section, when the first pole handle 1 and the second pole handle 2 are screwed, the internal and external threads are screwed with each other, the middle position of the inner wall of the first annular flat section abuts against the stress convex ring, and the lower port of the first pole handle 1 is suspended and does not contact the annular step section 7; when the pole handle is bent, the threads section and the stress convex ring where the two pole handles are connected jointly bear stress, thereby transferring the stress of the original port to the stress convex ring and the thread section, since the strength of the first annular flat section corresponding to the stress convex ring is far greater than the strength of the port, and the lower port of the first pole handle is suspended and does not bear stress, the problem that the port of the existing structure pole handle is prone to cracking can be well solved, and the pole handle is more durable.

[0019] As Figure 5 shown, in addition, the utility model can also leave a second annular flat section 8 between the stress convex ring 9 and the external thread 5, the outer diameter of the second annular flat section 8 is smaller than the outer diameter of the stress convex ring 9, the length of the stress convex ring 9 is shortened by this structure, the contact area is reduced when the first pole handle 1 and the second pole handle 2 are connected, and the resistance is smaller when being screwed, so that installation is more convenient, and other technical effects are the same as those of the first embodiment, and will not be repeated here.

Claims

1. A structure of a cleaning tool handle, comprising at least a first handle (1) and a second handle (2), an inner thread and an outer thread are respectively arranged at the connecting end of the adjacent handles, characterized in that: The inner thread (3) is arranged on the inner wall near the handle port, and a first annular flat portion (4) is left between the inner thread (3) and the handle port; the outer thread (5) is arranged on the outer surface of the handle end portion, and a stress convex ring (9) and a contraction section (6) are further arranged in sequence on the outer surface of the handle end portion from the outer thread (5) to the other end of the handle, an annular step portion (7) is formed between the contraction section (6) and the handle body, the outer diameter of the contraction section (6) is slightly smaller than the inner diameter of the first annular flat portion (4), the outer diameter of the stress convex ring (9) matches the inner diameter of the first annular flat portion (4), the first annular flat portion (4) wraps the contraction section (6) when adjacent handles are screwed, and the port of the first annular flat portion (4) is suspended.

2. A handle structure for a cleaning tool as defined in claim 1, characterized in that: A third annular flat portion (10) is left between the outer thread (5) and the handle port, and the outer diameter of the third annular flat portion (10) is slightly smaller than the inner diameter of the inner thread (3).

3. A handle structure for a cleaning tool as defined in claim 1, wherein: The length of the first annular flat portion (4) is smaller than the sum of the lengths of the stress convex ring (9) and the contraction section (6).

4. A handle structure for a cleaning tool as defined in claim 1, wherein: A second annular flat portion (8) is further left between the stress convex ring (9) and the outer thread (5), and the outer diameter of the second annular flat portion (8) is smaller than the outer diameter of the stress convex ring (9).

5. A handle structure for a cleaning tool rod as claimed in any one of claims 1 to 4, characterized in that: The inner thread (3) is arranged on the inner wall of the lower end of the first handle (1), and the outer thread (5) is arranged on the upper end portion of the second handle (2).

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