A quick-install structure and wheel device

Abstract

A quick-install structure, characterized in that it includes a fixed mounting seat, a movable sleeve, a first spring, a quick-release sleeve, an elastic pin assembly and an elastic locking member, wherein the elastic locking member is arranged in an axial mounting hole of the movable sleeve, and when the elastic pin assembly is pressed, the elastic locking member radially retracts to the inside of the movable sleeve so that the quick-release sleeve can be disengaged from the movable sleeve, and when the elastic pin assembly is reset, the elastic locking member extends out of the locking hole to prevent the quick-release sleeve from being disengaged from the movable sleeve. The quick-install structure can disengage the quick-release sleeve from the movable sleeve or lock the quick-release sleeve on the movable sleeve by pressing or resetting the elastic pin assembly, and the structure is very simple, and it is very convenient to install and disassemble the quick-release sleeve. The wheel device installs the wheel on the quick-release sleeve of the quick-install structure, and the wheel can be disassembled as long as the quick-release sleeve is disengaged from the movable sleeve, which is very convenient to disassemble, and correspondingly, it is also very convenient to install the wheel.

Description

Technical Field

[0001] The invention relates to a quick-install structure and a wheel device. Background Art

[0002] In order to facilitate pushing and moving, movable objects are generally equipped with wheels, and the wheels usually adopt a detachable mounting structure. For example, the "Quick Release Device for Wheels of Handcarts" disclosed in Patent No. CN 200520017041.8 (Authorization Announcement No. CN 2792896 Y) includes a wheel frame, a body at the bottom end, a circular groove in the body for a crossbar to pass through, a fixing hole on the crossbar, and two through holes in the body, one end of one of the through holes having a recess; a wheel, whose axle passes through the crossbar and has a groove at the corresponding fixing hole; a latch rod, which is slightly L-shaped and is arranged in the two through holes of the body; an elastic element, which is arranged in the recess of the body and is located outside the longer end of the latch rod; and a button, which is arranged in the recess of the body and is fixedly connected to the longer end of the latch rod and at the same time abuts against the elastic element. Through the above structural combination, when the wheel axle is inserted, the shorter end of the latch rod is locked in the groove by the elastic force of the elastic element, so that the wheel can be assembled and fixed; conversely, the wheel can be removed by pressing the button to push the latch end out of the groove. Although the above structure also realizes the quick installation of the wheel, the structure is relatively complex and needs further improvement. Summary of the invention

[0003] The first technical problem to be solved by the present invention is to provide a quick-install structure with simple structure and convenient assembly and disassembly in view of the above-mentioned existing technical status.

[0004] The second technical problem to be solved by the present invention is to provide a wheel device which is convenient for disassembling and assembling wheels in view of the above-mentioned existing technical status.

[0005] The technical solution adopted by the present invention to solve the above-mentioned first technical problem is: the quick-install structure is characterized by comprising:

[0006] Fixed mounting base;

[0007] A movable sleeve is movably arranged on the fixed mounting seat, an axial mounting hole is provided inside the movable sleeve, a stopper is provided at one end of the movable sleeve, and a locking hole connected to the axial mounting hole is opened on the tube wall at the other end of the movable sleeve;

[0008] A first spring, sleeved on the movable sleeve, wherein a first end of the first spring abuts against the stopper;

[0009] A quick-release sleeve, sleeved on the movable sleeve, wherein the first end of the quick-release sleeve abuts against the second end of the first spring;

[0010] An elastic pin assembly is installed in the movable sleeve, with its inner end extending into the axial mounting hole and its outer end exposed to the end of the movable sleeve where the stopper is located; and

[0011] An elastic locking piece is arranged in the axial mounting hole of the movable sleeve. When the elastic pin assembly is pressed, the elastic locking piece radially retracts to the inside of the movable sleeve so that the quick-release sleeve can be disengaged from the movable sleeve. When the elastic pin assembly is reset, the elastic locking piece extends out of the locking hole to prevent the quick-release sleeve from being disengaged from the movable sleeve.

[0012] In order to effectively lock the quick-release sleeve, a radial boss is formed at the second end of the quick-release sleeve. When the elastic pin assembly is in a reset state, the elastic locking piece radially extends out of the locking hole and abuts against the radial boss.

[0013] Preferably, a through hole is formed on the fixed mounting seat, a fixed sleeve is installed in the through hole, the inner end of the quick-release sleeve extends into the interior of the fixed sleeve, and the first spring extends into the fixed sleeve and abuts against the inner end of the quick-release sleeve.

[0014] In order to form a limiting fit between the movable sleeve and the elastic pin shaft assembly, an annular convex wall is radially protruded on the inner wall of the movable sleeve, and the elastic pin shaft assembly includes a pin shaft and a second spring. The inner end of the pin shaft has a first limiting boss that can abut against the first end of the annular convex wall, and the outer end of the pin shaft is provided with a second limiting boss, the first end of the second spring abuts against the second end of the annular convex wall, and the second end of the second spring abuts against the second limiting boss.

[0015] Further preferably, when the elastic pin assembly is in a reset state, the first limiting boss abuts against the first end of the annular convex wall.

[0016] The elastic locking piece can have a variety of structures. Preferably, the elastic locking piece is a V-shaped spring, the end of the pin shaft has an installation cavity with an opening toward the V-shaped spring, the tail of the V-shaped spring extends into the installation cavity, and the two ends of the V-shaped spring are arranged at positions corresponding to the locking hole. When the elastic pin shaft assembly is pressed, the two ends of the V-shaped spring are disengaged from the corresponding locking holes to enable the quick-release sleeve to be removed. When the elastic pin shaft assembly is reset, under the action of its own elastic force, the two ends of the V-shaped spring are inserted into the corresponding locking holes to lock the quick-release sleeve.

[0017] In order to push the pin shaft to move inward and act on the elastic locking member, a pressing head that moves synchronously with the pin shaft is installed at the outer end of the pin shaft, and the inner end of the pressing head extends into the movable sleeve, and the inner end of the pressing head forms the second limiting boss.

[0018] In order to facilitate the installation of the elastic pin assembly and the elastic locking member, the axial mounting hole is a through hole.

[0019] The technical solution adopted by the present invention to solve the above second technical problem is: the wheel device includes a wheel, and its characteristics are: the wheel is installed on the quick-release sleeve of the quick-release structure.

[0020] As a preferred solution, the wheel and the first spring are respectively arranged on the left and right sides of the fixed mounting seat, and the radial boss of the quick-release sleeve abuts against the side surface of the wheel.

[0021] As another preferred solution, the wheel and the first spring are arranged on the same side of the fixed mounting seat, and the wheel is closer to the fixed mounting seat than the first spring.

[0022] Compared with the prior art, the advantages of the present invention are: the quick-release structure includes a fixed mounting seat, a movable shaft sleeve, a first spring, a quick-release sleeve, an elastic pin shaft assembly and an elastic locking piece. By pressing or resetting the elastic pin shaft assembly, the quick-release sleeve can be disengaged from the movable shaft sleeve or the quick-release sleeve can be locked on the movable shaft sleeve. The structure is very simple, and it is very convenient to install and disassemble the quick-release sleeve. The wheel device installs the wheel on the quick-release sleeve of the quick-release structure. As long as the quick-release sleeve is disengaged from the movable shaft sleeve, the wheel can be disassembled. The disassembly is very convenient. Similarly, the installation of the wheel is also very convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic structural diagram of a quick-install structure according to Embodiment 1 of the present invention;

[0024] Figure 2 This is a schematic structural diagram of a fixed mounting base according to Embodiment 1 of the present invention;

[0025] Figure 3 This is a schematic diagram of an exploded view of the first embodiment of the present invention;

[0026] Figure 4 This is a schematic structural diagram of a wheel device according to Embodiment 1 of the present invention;

[0027] Figure 5 It is a structural cross-sectional view of the wheel device of the first embodiment of the present invention (wheel locked state);

[0028] Figure 6 It is a structural cross-sectional view of the wheel device of the first embodiment of the present invention (wheel detached state);

[0029] Figure 7 This is a schematic diagram of the installation of the wheel device according to the first embodiment of the present invention;

[0030] Figure 8 This is a schematic diagram of the installation of the wheel device according to the second embodiment of the present invention. DETAILED DESCRIPTION

[0031] The present invention is further described in detail below with reference to the accompanying drawings.

[0032] Embodiment 1:

[0033] like Figures 1 to 7 As shown, the quick-release structure of this embodiment includes components such as a fixed mounting seat 1, a movable shaft sleeve 2, a first spring 3, a quick-release sleeve 4, an elastic pin shaft assembly 5, a V-shaped spring 6, and a fixed sleeve 7.

[0034] Among them, a through hole 11 is opened on the fixed mounting seat 1, and the fixed sleeve 7 is installed in the through hole 11 and fixed to the fixed sleeve 7. The movable sleeve 2 axially passes through the fixed sleeve 7, that is, the two ends of the movable sleeve 2 are located on the left and right sides of the fixed mounting seat 1, and the movable sleeve 2 can move axially relative to the fixed sleeve 7. The movable sleeve 2 has an axial mounting hole 21 inside, and the axial mounting hole 21 is a through hole. A stopper 22 is provided at one end of the movable sleeve 2, and a locking hole 23 connected to the axial mounting hole 21 is opened on the tube wall at the other end of the movable sleeve 2, and an annular convex wall 24 is radially protruded on the inner wall of the movable sleeve 2.

[0035] by Figure 1 The direction indicated by the middle arrow A is the outside, the first spring 3 is sleeved on the movable sleeve 2, and the first end, i.e., the outer end, of the first spring 3 abuts against the stopper 22. The quick release sleeve 4 is sleeved on the movable sleeve 2, the first end of the quick release sleeve 4 extends into the interior of the fixed sleeve 7, the second end of the first spring 3 extends into the interior of the fixed sleeve 7 and abuts against the first end of the quick release sleeve 4. The second end of the quick release sleeve 4 forms a radial boss 41.

[0036] The elastic pin assembly 5 is installed in the movable sleeve 2, the inner end of the elastic pin assembly 5 extends into the axial mounting hole 21, and the outer end of the elastic pin assembly 5 is exposed at the outer end of the movable sleeve 2. The elastic pin assembly 5 includes a pin 51, a second spring 52 and a pressing head 53. The pin 51 extends into the axial mounting hole 21, and the inner end of the pin 51 has a first limiting boss 54 that can abut against the first end of the annular convex wall 24. The pressing head 53 is threadedly connected to the outer end of the pin 51, and the inner end of the pressing head 53 extends into the axial mounting hole 21, and the inner end of the pressing head 53 forms a second limiting boss 55. The first end of the second spring 52 abuts against the second end of the annular convex wall 24, and the second end of the second spring 52 abuts against the second limiting boss 55.

[0037] The V-shaped spring is provided as an elastic locking member in the axial mounting hole 21 of the movable sleeve 2. The end of the pin 51 has a mounting cavity 56 with an opening toward the V-shaped spring 6, and the tail of the V-shaped spring 6 extends into the mounting cavity 56. The two ends of the V-shaped spring 6 are provided at positions corresponding to the locking hole 23. When the elastic pin assembly 5 is pressed, the two ends of the V-shaped spring 6 are separated from the corresponding locking holes 23 and retracted into the movable sleeve 2, so that the quick-release sleeve 4 can be removed from the movable sleeve 2. When the elastic pin assembly 5 is in the reset state, under the elastic force of the second spring 52, the pin 51 is reset outward until the first limiting boss 54 of the elastic pin assembly 5 abuts against the first end of the annular convex wall 24. At the same time, under the action of its own elastic force, the two ends of the V-shaped spring 6 pass through the corresponding locking holes 23 and radially extend out of the locking holes to abut against the radial boss 41 of the quick-release sleeve 4, thereby locking the quick-release sleeve 4 and preventing the quick-release sleeve 4 from detaching from the movable sleeve 2.

[0038] like Figures 4 to 7 As shown, the wheel 8 is installed on the quick-release sleeve 4, and the wheel 8 and the first spring 3 are respectively arranged on the left and right sides of the fixed mounting seat 1. After the wheel 8 is installed, the V-shaped spring 6 extends out of the locking hole 23 and abuts against the radial boss 41 of the quick-release sleeve 4, and the radial boss 41 of the quick-release sleeve 4 abuts against the side of the wheel 8 to achieve wheel 8 locking. At this time, the V-shaped spring 6, the first spring 3 and the second spring 52 are all in a reset state. When the wheel 8 needs to be removed, first, the movable sleeve 2 moves inward. Since the first end of the annular convex wall 24 of the movable sleeve 2 is abutted against the first limiting boss 54 of the elastic pin shaft assembly 5, the pin shaft 51 and the pressing head 53 move inward synchronously with the movable sleeve 2. At this time, the first spring 3 is compressed; then, the pressing head 53 is pressed inward, and the pressing head 53 drives the pin shaft 51 to move further inward. The lower end of the pin shaft 51 drives the V-shaped spring to deform, so that the two ends of the V-shaped spring 6 retract inward to the inside of the movable sleeve 2. At this time, the V-shaped spring 6 releases the lock on the quick-release sleeve 4, and the wheel 8 and the quick-release sleeve 4 can be removed from the movable sleeve 2 together to complete the disassembly.

[0039] Embodiment 2:

[0040] like Figure 8 As shown, the wheel 8 and the first spring 3 are arranged on the same side of the fixed mounting seat 1, and the wheel 8 is closer to the fixed mounting seat 1 than the first spring 3. The installation and removal process of the wheel 8 is similar to that of the first embodiment, and will not be described in detail here.

Claims

1. A quick-install structure, characterized in that include: Fixed mounting base (1); A movable sleeve (2) is movably arranged on the fixed mounting seat (1), the movable sleeve (2) has an axial mounting hole (21) inside, a stopper (22) is provided at one end of the movable sleeve (2), and a locking hole (23) connected to the axial mounting hole (21) is opened on the tube wall at the other end of the movable sleeve (2); A first spring (3) is sleeved on the movable shaft sleeve (2), and a first end of the first spring (3) abuts against the stopper (22); A quick-release sleeve (4) is sleeved on the movable shaft sleeve (2), and a first end of the quick-release sleeve (4) abuts against a second end of the first spring (3); An elastic pin assembly (5) is installed in the movable sleeve (2), with its inner end extending into the axial mounting hole (21) and its outer end exposed at the end of the movable sleeve (2) where the stopper (22) is located; and An elastic locking member is arranged in the axial mounting hole (21) of the movable shaft sleeve (2); when the elastic pin shaft assembly (5) is pressed, the elastic locking member radially retracts to the inside of the movable shaft sleeve (2) so that the quick-release sleeve (4) can be disengaged from the movable shaft sleeve (2); when the elastic pin shaft assembly (5) is reset, the elastic locking member extends out of the locking hole (23) so as to prevent the quick-release sleeve (4) from being disengaged from the movable shaft sleeve (2); An annular convex wall (24) is radially protruded on the inner wall of the movable shaft sleeve (2); the elastic pin shaft assembly (5) comprises a pin shaft (51) and a second spring (52); the inner end of the pin shaft (51) has a first limiting boss (54) that can abut against the first end of the annular convex wall (24); the outer end of the pin shaft (51) is provided with a second limiting boss (55); the first end of the second spring (52) abuts against the second end of the annular convex wall (24); and the second end of the second spring (52) abuts against the second limiting boss (55); When the elastic pin assembly (5) is in a reset state, the first limiting boss (54) abuts against the first end of the annular convex wall (24); The elastic locking member is a V-shaped spring (6), the end of the pin shaft (51) has a mounting cavity (56) with an opening facing the V-shaped spring (6), the tail of the V-shaped spring (6) extends into the mounting cavity (56), and the two ends of the V-shaped spring (6) are arranged at positions corresponding to the locking hole (23). When the elastic pin shaft assembly (5) is pressed, the two ends of the V-shaped spring (6) are separated from the corresponding locking holes (23) so that the quick-release sleeve (4) can be removed. When the elastic pin shaft assembly (5) is reset, under the action of its own elastic force, the two ends of the V-shaped spring (6) are inserted into the corresponding locking holes (23) to lock the quick-release sleeve (4); The outer end of the pin shaft (51) is provided with a pressing head (53) which moves synchronously with the pin shaft (51), and the inner end of the pressing head (53) extends into the movable shaft sleeve (2), and the inner end of the pressing head (53) forms the second limiting boss (55).

2. The quick-install structure according to claim 1, characterized in that: The second end of the quick-release sleeve (4) forms a radial boss (41), and when the elastic pin assembly (5) is in the reset state, the elastic locking piece radially extends out of the locking hole (23) and abuts against the radial boss (41).

3. The quick-install structure according to claim 1, characterized in that: The fixed mounting seat (1) is provided with a through hole (11), a fixed sleeve (7) is installed in the through hole (11), the inner end of the quick-release sleeve extends into the interior of the fixed sleeve, and the first spring (3) extends into the fixed sleeve (7) and abuts against the inner end of the quick-release sleeve (4).

4. The quick-install structure according to claim 1, characterized in that: A wheel (8) can be installed on the quick-release sleeve (4) of the quick-install structure.

5. The quick-install structure according to claim 4, characterized in that: The wheel (8) and the first spring (3) are respectively arranged on the left and right sides of the fixed mounting seat (1), and the radial boss (41) of the quick-release sleeve (4) abuts against the side surface of the wheel.

6. The quick-install structure according to claim 4, characterized in that: The wheel (8) and the first spring (3) are arranged on the same side of the fixed mounting seat (1), and the wheel (8) is closer to the fixed mounting seat (1) than the first spring (3).

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