CN219790376U - Quick-dismantling structure - Google Patents

Abstract

The utility model relates to a quick-dismantling structure, which comprises a C-shaped seat bundle, two deflection rotating sleeves, two deflection rotating blocks and a U-shaped handle, wherein the two ends of the opening of the C-shaped seat bundle are respectively provided with an opposite lug, the deflection rotating sleeves can be arranged on the opposite lug, the deflection rotating sleeves are respectively provided with a containing groove at the other side of the lug, the deflection rotating sleeves are respectively provided with a plurality of first spiral inclined parts in the containing grooves, the deflection rotating blocks are respectively contained in the containing grooves of the deflection rotating sleeves, the surface of one side of each deflection rotating block corresponding to the deflection rotating sleeve is provided with a plurality of second spiral inclined parts, and the first spiral inclined parts and the second spiral inclined parts can enable the deflection rotating sleeves to be relatively rotated and lifted away from or reversely attached to be close to the adjacent deflection rotating blocks.

Description

Quick-dismantling structure

Technical Field

The utility model relates to a quick-dismantling structure, and mainly belongs to the technical field of bicycles.

Background

The existing quick-release structure is generally used on a telescopic pipe fitting which often needs to be adjusted in length or height, and can be quickly released to adjust the height and tighten and fix the length after the adjustment, for example, the quick-release structure is used for a frame vertical pipe of a bicycle and a seat cushion pipe inserted in the bicycle, and can be used for achieving the purpose of quickly adjusting the height of the seat cushion pipe. The existing quick-dismantling structure consists of a C-shaped seat bundle and a U-shaped handle, wherein shaft sheets at two ends of the U-shaped handle are pivoted on lugs at two ends of an opening of the C-shaped seat bundle, deflection rotating blocks with relative inclined conical parts are respectively arranged on the shaft sheets and the lugs at two sides, when the U-shaped handle is wrenched, the opening interval of the C-shaped seat bundle can be changed by utilizing the relative lifting or resetting of the inclined conical parts of the deflection rotating blocks, and further, the frame standpipe (the outer tube) can be selectively tightened or released through changing the inner diameter of the C-shaped seat bundle, so that the relative position between the frame standpipe (the inner tube) can be adjusted according to requirements.

However, the foregoing quick-dismantling structure has a big problem in use, namely, the fixing property of the C-shaped seat bundle and the U-shaped handle and the offset rotary block is insufficient, and the quick-dismantling structure is formed by an indirect driving mode, and is often broken due to insufficient bearing force, so that the quick-dismantling structure is disabled, and the opposite offset rotary block is exposed, so that in order to avoid foreign matters entering, dust-proof sleeves are required to be added, the structure is more complex, and the manufacturing and maintenance costs are increased;

in other words, the existing quick-release structure has the problems of complicated dust-proof design, increased cost, insufficient stability and easy damage, and inconvenience and trouble in operation and use, so that further improvement is required.

Disclosure of Invention

The technical problems to be solved by the utility model are as follows: the utility model provides a quick detach structure, its simple structure has dustproof effect, can avoid the foreign matter to get into and influence the quick detach action, and the subassembly combines simultaneously to have better steadiness, and is laborsaving in the operation and the practicality is strong, overcomes prior art's not enough.

In order to solve the technical problems, the utility model adopts the following technical scheme: a quick-dismantling structure is applied to the end part of an outer tube, the inner tube is slidably arranged in the end part of the outer tube, the outer tube is selectively actuated to tighten the inner tube, and the quick-dismantling structure comprises a C-shaped seat bundle, two deflection rotating sleeves, two deflection rotating blocks and a U-shaped handle; the C-shaped seat bundle is provided with opposite lugs at two ends of the opening, the offset rotary sleeve can be arranged on the opposite lugs, one side of the offset rotary sleeve opposite to the lug is provided with a containing groove respectively, and the offset rotary sleeve is provided with a plurality of first spiral inclined parts in the containing groove; the U-shaped handle is provided with two shaft sheets corresponding to the lugs of the C-shaped seat bundles, and the shaft sheets, the deflection rotating blocks, the deflection rotating sleeves and the lugs of the C-shaped seat bundles are sequentially penetrated and pivoted by a pair of locking bolts, so that the U-shaped handle can directly drive the deflection rotating blocks to rotate relatively in the deflection rotating sleeves.

Preferably, two lugs of the C-shaped seat beam are formed with a shaft hole with an axis perpendicular to the axis of the C-shaped seat beam, the eccentric rotary sleeve shaft center is provided with a shaft hole corresponding to the shaft hole of the two lugs, the eccentric rotary block shaft center is provided with a shaft hole corresponding to the eccentric rotary sleeve shaft hole, and two shaft sheets of the U-shaped handle are formed with a shaft hole corresponding to the shaft hole of the C-shaped seat beam for the pair of locking bolts to pass through for locking by a pair of locking screws.

Preferably, a limiting caulking groove is formed on the opposite outer side surfaces of the two lugs of the C-shaped seat bundle, and a limiting caulking block corresponding to the limiting caulking groove is formed on one side surface of the offset rotary sleeve opposite to the two lugs, so that the offset rotary sleeve can be firmly embedded and clamped on the two lugs.

Preferably, the other side surface of the offset rotary block, which is different from the offset rotary sleeve, is respectively provided with at least two limiting convex columns, and the two shaft sheets of the U-shaped handle are provided with at least two limiting concave holes corresponding to the limiting convex columns relative to the one side surface of the offset rotary block, so that the offset rotary block can be firmly embedded on the U-shaped handle.

Preferably, a locking bolt lock is used in the C-shaped seat bundle to be provided with a C-shaped sleeve so as to improve the fixity of the quick-dismantling structure relative to the outer tube.

The beneficial effects of the utility model are as follows: through the display of the technical means, the quick-dismantling structure can utilize the U-shaped handle to directly drive the deflection rotary block to relatively rotate with the deflection rotary sleeve embedded with the C-shaped seat bundle, so that the relative rotation of the deflection rotary sleeve and the deflection rotary block is lifted away and reversely attached to be close to change the relative tightening of the C-shaped seat bundle or release the inner pipe inside the outer pipe.

The present utility model will be described in further detail with reference to the accompanying drawings.

Drawings

Fig. 1 is a schematic perspective view of the quick release structure of the present utility model.

Fig. 2 is a schematic perspective exploded view of the quick release structure of the present utility model.

Fig. 3 is a schematic top view of the quick release structure.

Fig. 4 is a schematic top view of the quick release structure in actual operation.

Detailed Description

As shown in fig. 1, the quick release structure 20 is applied to an end portion of an outer tube 10, and an inner tube 15 is slidably disposed in the outer tube 10, wherein at least one axially extending slot 11 is formed at a periphery of the end portion of the outer tube 10 for selectively actuating the outer tube 10 to tighten the inner tube 15 through the quick release structure 20;

as shown in fig. 1, 2 and 3, the quick release structure 20 is composed of a C-shaped seat bundle 21, two offset rotary sleeves 23, two offset rotary blocks 24 and a U-shaped handle 25, wherein the C-shaped seat bundle 21 is provided with a plurality of opposite lugs 22 at two ends of the opening, the two lugs 22 are provided with a shaft hole 220 opposite to each other and having an axis perpendicular to the axis of the C-shaped seat bundle 21, the different outer side surfaces of the two lugs 22 are respectively provided with a limit embedding groove 221 penetrating through the shaft hole 220 for the offset rotary sleeve 23 to be relatively embedded, the axis of the offset rotary sleeve 23 is provided with a shaft hole 230 corresponding to the shaft hole 220 of the lug 22, the other side of the offset rotary sleeve 23 opposite to the lug 22 is respectively provided with a containing groove 231, a half space of the offset rotary sleeve 23 in the containing groove 231 is provided with a plurality of first spiral inclined parts 232, and one side surface of the offset rotary sleeve 23 opposite to the lug 22 is respectively provided with a limit embedding groove 235 corresponding to the limit embedding groove 221, so that the lug 23 can be embedded and firmly in the lug 22;

the offset rotary block 24 is respectively accommodated in the accommodating groove 231 of the offset rotary sleeve 23, the axial center of the offset rotary block 24 is provided with an axial hole 240 corresponding to the axial hole 230 of the offset rotary sleeve 23, one side surface of the offset rotary block 24 corresponding to the offset rotary sleeve 23 is provided with a plurality of second spiral inclined parts 242, the first spiral inclined parts (232) and the second spiral inclined parts (242) can enable the offset rotary sleeve 23 and the adjacent offset rotary block 24 to relatively rotate, lift and separate or reversely fit and approach, and the other side surface of the offset rotary block 24 different from the offset rotary sleeve 23 is respectively provided with at least two limiting convex columns 245 formed around the axial hole 240 so that the offset rotary block 24 can be firmly embedded on the U-shaped handle 25; the U-shaped handle 25 has two corresponding shaft plates 26 corresponding to the lugs 22 of the C-shaped seat bundle 21, a shaft hole 260 corresponding to the shaft hole 220 of the C-shaped seat bundle 21 is formed on the two shaft plates 26, at least two limiting concave holes 261 corresponding to the limiting convex columns 245 are formed on one side surface of the two shaft plates 26 corresponding to the limiting rotary block 24 for the limiting rotary block 24 to be relatively embedded and fixed, and a pair of locking bolts 27 sequentially penetrate through the shaft plates 26 of the U-shaped handle 25, the limiting rotary block 24, the limiting rotary sleeve 23 and the shaft holes (260, 240, 230 and 220) of the lugs 22 of the C-shaped seat bundle 21, and then are locked by locking screws 270, and a C-shaped sleeve 28 is locked in the C-shaped seat bundle 21 by using a locking bolt 280 for generating a tightening effect relative to the outer tube 10 so as to improve the fixity of the quick-dismantling structure 20 relative to the outer tube 10; therefore, the U-shaped handle 25 can directly drive the deflection rotating block 24 to be arranged in the deflection rotating sleeve 23 to rotate relatively, and the quick-dismantling structure with dustproof effect, high stability and convenient operation is realized.

Through the above design, in practical operation, as shown in fig. 1, 2, 3 and 4, when the U-shaped handle 25 of the quick release structure 20 is pulled downward, the U-shaped handle 25 can directly drive the offset rotary block 24 to relatively rotate in the accommodating groove 231 of the offset rotary sleeve 23, so that the offset rotary block 24 and the second spiral inclined portion (242, 232) of the offset rotary sleeve 23 can relatively rotate, lift and separate, and the lugs 22 of the C-shaped seat bundle 21 are relatively close, so that the inner diameter of the C-shaped seat bundle 21 is reduced to synchronously actuate the outer tube 10 to tighten the inner tube 15 (as shown in fig. 3), so as to fix the outer tube 10 and the inner tube 15;

when the U-shaped handle 25 of the quick release structure 20 is lifted upwards, the U-shaped handle 25 can directly drive the offset rotary block 24 to relatively reversely rotate in the accommodating groove 231 of the offset rotary sleeve 23, so that the offset rotary block 24 and the second spiral inclined parts (242, 232) of the offset rotary sleeve 23 can relatively reversely rotate and close to each other, the lugs 22 of the C-shaped seat bundle 21 are propped apart, the inner diameter of the C-shaped seat bundle 21 is enlarged, and the outer tube 10 is synchronously actuated to release the inner tube 15 (as shown in fig. 4), so that the positions of the outer tube 10 and the inner tube 15 can be adjusted;

as can be seen from the foregoing description, the quick-release structure of the present utility model can utilize the U-shaped handle 25 to directly drive the eccentric rotary block 24 to relatively rotate with the eccentric rotary sleeve 23 embedded in the C-shaped seat bundle 21, so as to utilize the relative rotation of the eccentric rotary sleeve 23 and the eccentric rotary block 24 to lift away from and reversely attach to change the relative tightening or releasing of the inner tube 15 inside the outer tube 10, since the eccentric rotary sleeve 23 is fixedly arranged on the limiting groove 221 of the lug 22 of the C-shaped seat bundle 21 by the limiting embedded block 235, and the eccentric rotary block 24 is fixedly arranged on the limiting concave hole 261 of the shaft 26 of the U-shaped handle 25 by the limiting convex column 245, the stability of the quick-release structure can be greatly improved, and meanwhile, the eccentric rotary block 24 is relatively rotated in the eccentric rotary sleeve 23, so that a dustproof effect can be provided by a simple structure, the entry of foreign matters can be avoided to influence the quick-release function of the quick-release structure, and meanwhile, the assembly of the quick-release structure is more stable, the assembly is further firmly lost, the quick-release structure is operated, and the quick-release structure is more convenient and practical.

Claims (5)

1. A quick-dismantling structure is applied to the end part of an outer tube, the inner tube is slidably arranged in the end part of the outer tube, the outer tube is selectively actuated to tighten the inner tube, and the quick-dismantling structure comprises a C-shaped seat bundle, two deflection rotating sleeves, two deflection rotating blocks and a U-shaped handle; the method is characterized in that: the C-shaped seat bundle is provided with opposite lugs at two ends of the opening, the offset rotary sleeve can be arranged on the opposite lugs, one side of the offset rotary sleeve opposite to the lug is provided with a containing groove respectively, and the offset rotary sleeve is provided with a plurality of first spiral inclined parts in the containing groove; the U-shaped handle is provided with two shaft sheets corresponding to the lugs of the C-shaped seat bundles, and the shaft sheets, the deflection rotating blocks, the deflection rotating sleeves and the lugs of the C-shaped seat bundles are sequentially penetrated and pivoted by a pair of locking bolts, so that the U-shaped handle can directly drive the deflection rotating blocks to rotate relatively in the deflection rotating sleeves.

2. The quick release structure of claim 1, wherein: the two lugs of the C-shaped seat bundle are provided with a shaft hole which is opposite to the shaft hole of the C-shaped seat bundle and has a vertical axis with the shaft hole of the two lugs, the shaft center of the offset rotary sleeve is provided with a shaft hole which is corresponding to the shaft hole of the offset rotary sleeve, the two shaft pieces of the U-shaped handle are provided with a shaft hole which is opposite to the shaft hole of the C-shaped seat bundle, and the pair of locking bolts are penetrated and pivoted to be locked by a pair of locking screws.

3. The quick release structure of claim 1, wherein: the opposite outer side surfaces of the two lugs of the C-shaped seat bundle are respectively provided with a limiting caulking groove, and one side surface of the deviation rotary sleeve opposite to the two lugs is respectively provided with a limiting caulking block corresponding to the limiting caulking groove, so that the deviation rotary sleeve can be firmly embedded and clamped on the two lugs.

4. A quick release structure as claimed in claim 3, wherein: the other side surface of the deflection rotating block, which is different from the deflection rotating sleeve, is respectively provided with at least two limiting convex columns, and at least two limiting concave holes corresponding to the limiting convex columns are formed on the two shaft sheets of the U-shaped handle relative to one side surface of the deflection rotating block, so that the deflection rotating block can be firmly embedded on the U-shaped handle.

5. The quick release structure of claim 1, wherein: a locking bolt lock is used in the C-shaped seat bundle to be provided with a C-shaped sleeve so as to improve the fixity of the quick-dismantling structure relative to the outer tube.