CN207935225U - A kind of stretching structure - Google Patents

Abstract

The utility model belongs to the technical field of household articles or equipment, in particular to a telescopic structure. A telescoping structure, including a first connecting part and a second connecting part and a sleeve, the sleeve is sleeved on the first connecting part and the second connecting part, the first connecting part and the second connecting part Parts of the sleeve are screwed together, and when the sleeve is rotated, the first connection part and the second connection part move away from each other or approach each other; the inner end of the first connection part and the inner end of the second connection part mutually abut against, so that the first connecting part and the second connecting part rotate synchronously relative to the casing. The purpose of the utility model is to provide a telescopic structure with simple structure, obvious telescopic effect and not easy to slip.

Description

a telescopic structure

technical field

The utility model belongs to the technical field of household articles or equipment, in particular to a telescopic structure.

Background technique

At present, in family life, most household items such as mops, hangers and clothes forks are designed to be basically fixed in length. A few retractable household items that exist on the market often use thin tubes that are sleeved in long tubes to stretch them. and fix it with a limit protrusion. This kind of stretching method often uses more raw materials, and there is almost no requirement for the maximum stretching length in life, resulting in a great waste of materials.

Contents of the invention

The purpose of the utility model is to provide a telescopic structure with simple structure and labor-saving operation.

The purpose of this utility model is achieved in that:

A telescopic structure, including a first connecting part and a second connecting part and a sleeve, the sleeve is sleeved on the first connecting part and the second connecting part, the first connecting part and the second connecting part Parts of the sleeve are screwed together, and when the sleeve is rotated, the first connecting part and the second connecting part move away from each other or approach each other; the inner end of the first connecting part and the inner end of the second connecting part mutually abut against, so that the first connecting part and the second connecting part rotate synchronously relative to the casing.

The utility model is further provided that the first connecting part is provided with two position-limiting protrusions A, and two position-limiting grooves C are formed between the two position-limiting protrusions A; the second connecting part is provided with two A limiting protrusion B, and two limiting grooves D are formed between the two limiting protrusions B; when the first connecting part is adapted to the second connecting part, the limiting groove C and the limiting The protrusions B are attached to each other, and the limiting groove D and the limiting protrusion A are attached to each other.

The utility model is further configured as follows: the first connecting part is provided with external threads, the second connecting part is provided with reverse external threads; one end of the casing is provided with internal threads matching the external threads, The other end is provided with a reverse internal thread adapted to the reverse external thread.

The utility model is further configured that a handle is provided on the surface of the sleeve.

The utility model is further configured as follows: the first connecting part is provided with an external thread, the sleeve is provided with an internal thread matching the external thread, the second connecting part is provided with a limiting part, and one end of the sleeve is When the sleeve rotates against the limiting portion, the first connecting portion and the second connecting portion move away from each other.

The utility model is further provided that, one end of the first connecting part is integrally formed with a limiting protrusion E, and the second connecting part is formed with a limiting protrusion F matching the limiting protrusion E. When rotating In the casing, the first connection part is far away from the second connection part.

Compared with the prior art, the utility model has outstanding and beneficial technical effects as follows:

The utility model adopts opposite connecting parts, the surface of which is provided with external threads, and the casing sleeves on the upper ends of the two connecting parts are provided with internal threads matching the external threads, and the casing can be rotated to produce Compared with the traditional telescopic structure, the movement of the connecting parts away from each other or fitting together, the utility model is simpler; the two connecting parts have mutually adapted limit protrusions, so that in the process of rotating the sleeve, a relatively The large contact area prevents the phenomenon of sliding teeth, and the telescopic effect is more stable; the handle on the sleeve also allows users to better rotate the sleeve during use, and is less prone to slippery hands.

Description of drawings

Fig. 1 is the explosion schematic diagram of the utility model;

Fig. 2 is a schematic cross-sectional view of the casing in Fig. 1;

Fig. 3 is an explosion schematic diagram of an embodiment of the utility model;

Fig. 4 is a schematic cross-sectional view of the casing in Fig. 3;

Fig. 5 is a schematic diagram of the connection part in an embodiment of the utility model;

Fig. 6 is a side view of Fig. 5;

The meanings of the symbols in the figure:

1-first connecting part; 2-second connecting part; 3-sleeve; 11-limiting protrusion A; 12-limiting groove C;

13-external thread; 17-external thread G; 18-internal thread H; 21-limit protrusion B; 22-limit groove D;

23-reverse external thread; 24-limiting part; 25-limiting protrusion E; 31-internal thread; 32-reverse internal thread;

33-handle.

Detailed ways

Below in conjunction with specific embodiment the utility model is further described:

Embodiment one:

As shown in Figures 1 and 2, a telescopic structure includes a first connecting part 1, a second connecting part 2 and a sleeve 3, and the sleeve 3 is sleeved on the first connecting part 1 and the second connecting part. On the connecting part 2, the first connecting part 1 and the second connecting part 2 are screwed to the sleeve 3, when the sleeve 3 is rotated, the first connecting part 1 and the second connecting part 2 face each other Away or close to each other; the inner end of the first connecting part 1 and the inner end of the second connecting part 2 abut against each other, so that the first connecting part 1 and the second connecting part 2 rotate synchronously relative to the sleeve 3 . Utilize the screw thread design that the sleeve 3 and the first connecting part 1 and the second connecting part 2 are compatible with each other, and the first connecting part 1 and the second connecting part 2 are provided with the same external thread, but the directions of the two are opposite, At the same time, the casing 3 is designed with an internal thread and a reverse internal thread that are compatible with the above-mentioned first connecting part 1 and the second connecting part. The threads that are compatible with each other of the three can be separated from each other with the rotation of the casing 3. Fitted motion trajectory. And in order to prevent the two connecting parts in the sleeve tube 3 from being used by the user, a stop protrusion that is adapted to each other is designed so that the two can not be free in the sleeve tube 3 under the above circumstances. Sliding phenomenon, at the same time, during the user's use, after rotating the sleeve 3, the first connecting part 1 and the second connecting part 2 are mutually limited, so that it is not easy to slip, the use effect is more stable, and the telescopic effect is better.

As shown in Figure 1, the utility model is further configured as follows: the first connecting part 1 is provided with two position-limiting protrusions A11, and two position-limiting grooves C12 are formed between the two position-limiting protrusions A11; The second connecting part 2 is provided with two limiting protrusions B21, and two limiting grooves D22 are formed between the two limiting protrusions B21; when the first connecting part 1 is matched with the second connecting part 2 , the limiting groove C12 is in contact with the limiting protrusion B21, and the limiting groove D22 is in contact with the limiting protrusion A11. Utilizing the above-mentioned design scheme, two position-limiting protrusions are provided, and two position-limiting grooves are formed. When the first connecting part 1 and the second connecting part 2 are attached to each other, the two connecting parts can have more A large contact area makes the position-limiting effect more obvious, and better prevents the first connecting part 1 and the second connecting part 2 from slipping due to the small contact surface when the sleeve 3 is rotated.

As shown in Figures 1 and 2, the utility model is further configured as follows: the first connecting part 1 is provided with an external thread 13, and the second connecting part 2 is provided with a reverse external thread 23; one end of the casing 3 An internal thread 31 matching the external thread 13 is provided, and a reverse internal thread 32 matching the reverse external thread 23 is provided at the other end thereof. The mutually adapted thread design, on the one hand, makes the rotation effect more obvious; on the other hand, due to the long thread path, when rotating the sleeve 3, the effect of fine-tuning the telescopic length of the structure can be achieved through fine adjustments. The two-way thread also turns faster and adjusts more quickly.

The utility model is further configured that a handle 33 is provided on the surface of the casing 3 . The design of the handle part 33 is convenient for the user to rotate more comfortably during use.

Embodiment two:

The design of this embodiment is basically similar to that of Embodiment 1, the difference is that, as shown in Figure 3 and Figure 4, the utility model is further configured as follows: the first connecting part 1 is provided with an external thread G17, and the sleeve 3 An internal thread H18 compatible with the external thread G17 is provided, and the second connecting part 2 is provided with a limiting part 24, and one end of the sleeve 3 abuts against the limiting part 24, when the sleeve 3 rotates , the first connecting portion 1 and the second connecting portion 2 are far away from each other. In this embodiment, only the first connecting portion 1 is provided with an external thread, and the sleeve 3 is provided with an internal thread adapted to the first connecting portion 1, and when the sleeve 3 is rotated, the second connecting portion is provided with The limiting portion 24 of the sleeve 3 abuts against the end of the sleeve 3 that is not provided with an internal thread. At this time, the first connecting portion 1 moves relative to the second connecting portion 2 , and the first connecting portion 1 is far away from the second connecting portion 2 .

Embodiment three:

The design of this embodiment is basically similar to that of Embodiment 1, the difference is that, as shown in Figure 5 and Figure 6, the utility model is further provided that one end of the first connecting part 1 is integrally formed with a limiting protrusion E25, The second connecting part 2 is formed with a limiting protrusion F matching the limiting protrusion E25. When the sleeve 3 is rotated, the first connecting part 1 is away from the second connecting part 2 . The utility model adopts the design of a single limit protrusion for each connecting part, and the design of the cross-section is roughly semicircular. When the first connecting part 1 and the second connecting part 2 are adapted, the two fit each other, and the two connecting parts The design of the double thread or the design of the stopper 24 in the above-mentioned embodiments can be adopted, and the technical effect that the first connecting part 1 and the second connecting part 2 are far away from each other can also be achieved when the sleeve 3 is rotated, and the material is more than the above-mentioned The design is more material-saving, but the contact area is reduced, which may cause slipping and loosening after a long period of use.

The foregoing embodiments are only preferred embodiments of the present utility model, and are not intended to limit the scope of protection of the present utility model. Therefore: all equivalent changes made according to the structure, shape, and principle of the present utility model should be covered by this utility model. within the scope of protection of utility models.

Claims (6)

1. a kind of stretching structure, which is characterized in that include first connecting portion (1) and second connecting portion (2) and casing (3), institute It states casing (3) and is sheathed on the first connecting portion (1) in second connecting portion (2), the first connecting portion (1) connect with second Portion (2) portion is threadedly coupled described sleeve pipe (3), when rotating described sleeve pipe (3), the first connecting portion (1) and second connecting portion (2) opposite separate or opposite close；First connecting portion (1) inner end and the inner end of second connecting portion (2) are against each other so that First connecting portion (1), second connecting portion (2) are rotated synchronously relative to casing (3).

2. a kind of stretching structure according to claim 1, which is characterized in that the first connecting portion (1) set there are two limit Position protrusion A (11), being molded at two between limit protrusion A (11) at two has limiting groove C (12)；The second connecting portion (2) sets There are two limit protrusion B (21), (22) limiting groove D at two are formed between limit protrusion B (21) at two；First connection When portion (1) is adapted to second connecting portion (2), the limiting groove C (12) is bonded to each other with limit protrusion B (21), the limit Groove D (22) and limit protrusion A (11) is bonded to each other.

3. a kind of stretching structure according to claim 1, which is characterized in that the first connecting portion (1) is provided with outer spiral shell Line (13), the second connecting portion (2) are equipped with reversed external screw thread (23)；Described sleeve pipe (3) one end is equipped with and the external screw thread (13) compatible internal thread (31), the other end are equipped with the compatible reversed internal thread with the reversed external screw thread (23) (32)。

4. a kind of stretching structure according to claim 1 or 2 or 3, which is characterized in that described sleeve pipe (3) surface is equipped with hand Carry portion (33).

5. a kind of stretching structure according to claim 1, which is characterized in that the first connecting portion (1) is equipped with external screw thread G (17), described sleeve pipe (3) is equipped with the external screw thread G (17) compatible internal thread H (18), and second connecting portion (2) is equipped with limit Position portion (24), described sleeve pipe (3) one end offset with the limiting section (24), when described sleeve pipe (3) rotate, first connection Portion (1) is opposite separate with second connecting portion (2).

6. a kind of stretching structure according to claim 1, which is characterized in that described first connecting portion (1) one end one at There are one limit protrusion E (25), the second connecting portions (2) to form the compatible limit protrusion F with limit protrusion E (25) for type (26), when rotation described sleeve pipe (3), first connecting portion (1) is far from second connecting portion (2).