Mute wear-resistant luggage universal wheel

Abstract

The utility model discloses a mute wear-resistant luggage universal wheel, which relates to the technical field of luggage universal wheels and comprises a roller and a support, a sliding rod is fixedly mounted at the top of the support, a fixing plate is arranged at the top of the support, a mounting groove is mounted at the top of the support, a spring is mounted in the mounting groove, mounting plates are arranged at two ends of the spring, and the mounting plates are matched with the mounting groove. The sliding rod is installed in the sliding pipe in a sliding mode through the fixing plate, the sliding pipe is in spiral connection with the connecting pipe through spiral threads arranged on the outer side of the sliding pipe, the connecting pipe is rotationally arranged at the bottom of the connecting plate, and a limiting groove is formed in the top of an inner cavity of the connecting pipe and matched with the installing plate. The mounting plate is matched with the mounting groove, and when the damping performance of the spring is weakened, the sliding pipe can drive the spring to be separated from the connecting pipe through spiral connection of the sliding pipe and the connecting pipe, so that a new spring is replaced, and the situation that the damping effect of the universal wheel is reduced due to the problem of the spring is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to a suitcase universal wheel technical field, concretely is a kind of mute wear-resistant suitcase universal wheel. BACKGROUND

[0002] Universal wheel is so-called movable caster, its structure allows 360 degrees rotation horizontally.Caster is a collective term, including movable caster and fixed caster.Fixed caster has no rotating structure, cannot rotate horizontally only vertically.This two kinds of casters are generally used in pairs, such as the structure of handcart is two fixed wheels in front, two movable universal wheels close to the pushing handle at back.

[0003] The Chinese utility model with patent application number 202320913953.1 provides a kind of high wear-resistant pressure-resistant mute universal wheel, by setting first compression spring, second compression spring and third compression spring, when gyro wheel is impacted by vibration, can successively reduce vibration, reach the purpose of protecting suitcase, avoid fragile goods in suitcase damage;When the shock-absorbing property of universal wheel weakens, rotate adjusting screw rod, adjust the initial elastic force of first compression spring, second compression spring and third compression spring, so that the shock-absorbing effect of universal wheel can be improved, and the service life of universal wheel is increased.

[0004] However, the above-mentioned device finds that when the shock-absorbing property of the spring weakens, the adjusting assembly can restore the elastic force to some extent, but the adjustment cannot fundamentally change the fatigue and internal damage of the spring that has already occurred, which can easily lead to failure of the spring during subsequent use, thereby affecting the shock-absorbing effect of the universal wheel. UTILITY MODEL CONTENTS

[0005] In view of the deficiencies of the prior art, the utility model provides a mute wear-resistant suitcase universal wheel, which solves the problem that the adjustment cannot fundamentally change the fatigue and internal damage of the spring that has already occurred, which can easily lead to failure of the spring during subsequent use, thereby affecting the shock-absorbing effect of the universal wheel.

[0006] To achieve the above-mentioned purposes, the utility model is implemented by the following technical solutions: a mute wear-resistant suitcase universal wheel, comprising a gyro wheel and a bracket, the top of the bracket is fixedly installed with a sliding rod, the top of the sliding rod is provided with a fixed plate, the top of the fixed plate is provided with a mounting groove, the mounting groove is installed with a spring, the two ends of the spring are connected with mounting plates, the mounting plates are matched with the mounting groove, the sliding rod is slidably installed in a sliding tube through the fixed plate, the outer side of the sliding tube is provided with a helical thread, the sliding tube is helically connected with the inner wall helical groove of a connecting tube through the helical thread, the connecting tube is rotatably arranged at the bottom of a connecting plate, the inner cavity top of the connecting tube is provided with a limiting groove, and the limiting groove is matched with the mounting plate.

[0007] Preferably, limit blocks are fixedly installed equidistantly on the inner wall of the sliding tube, and a buffer pad is installed at the bottom of the inner cavity of the sliding tube.

[0008] Preferably, a connecting groove is formed in the circumferential side of the fixed plate, and the connecting groove is adapted to the limit blocks.

[0009] Preferably, a moving tube is installed on one side of the connecting tube, a moving plate is slidably arranged in the moving tube, the moving plate is rotationally connected with a screw rod, the screw rod is screw-connected with the moving tube, and one end of the screw rod is arranged outside the moving tube and fixedly connected with a knob.

[0010] Preferably, a clamping block is fixedly arranged on the side of the moving plate away from the screw rod, the clamping block passes through the connecting tube and corresponds to a clamping groove, and the clamping groove is formed in the outer side of the sliding tube.

[0011] The utility model provides a kind of mute wear-resistant type luggage universal wheel.It has the following beneficial effects:

[0012] (1), the utility model discloses a spring both ends connecting mounting plate, mounting plate and installation groove are adapted, when the damping of spring weakens, using the screw connection of sliding tube and connecting tube, prompting sliding tube can drive spring and connecting tube separate, to replace new spring, avoid the shock-absorbing effect of universal wheel to decline due to spring problem.

[0013] (2), the utility model discloses that clamping block and clamping groove are adapted, using clamping block to limit clamping groove, to avoid luggage when using, sliding tube accidentally rotates inside connecting tube.

[0014] Thus, the problem that adjusting cannot fundamentally change the fatigue and internal damage of spring, and further easily causes spring failure during subsequent continuous use, thereby affecting the shock-absorbing effect of universal wheel, is solved. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is the overall structure display drawing of the utility model;

[0016] Figure 2 It is the structure display drawing of the utility model Figure 1 in middle support;

[0017] Figure 3 It is the structure display drawing of the utility model Figure 1 in connecting tube inside sliding tube;

[0018] Figure 4 It is the structure display drawing of the utility model Figure 1 in connecting tube.

[0019] In the figure, 1, the roller; 2, the support; 3, the sliding rod; 31, the fixed plate; 32, the connecting groove; 33, the installation groove; 4, the connecting pipe; 41, the limiting groove; 42, the moving pipe; 43, the knob; 44, the screw rod; 45, the moving plate; 46, the clamping block; 5, the connecting plate; 6, the spring; 61, the mounting plate; 7, the sliding pipe; 71, the helical thread; 72, the limiting block; 73, the clamping groove; 74, the buffer pad. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0021] Embodiment 1: please refer to Figures 1-4 A mute wear-resistant type luggage universal wheel, including roller 1 and support 2, the top of support 2 is fixedly installed with sliding rod 3, the top of sliding rod 3 is provided with fixed plate 31, the top of fixed plate 31 is provided with installation groove 33, spring 6 is installed in installation groove 33, the both ends of spring 6 are connected with mounting plate 61, mounting plate 61 is matched with installation groove 33, sliding rod 3 is slidably installed in sliding pipe 7 through fixed plate 31, the outer side of sliding pipe 7 is provided with helical thread 71, sliding pipe 7 is helically connected with the inner wall spiral groove of connecting pipe 4 through helical thread 71, connecting pipe 4 is rotatably arranged at the bottom of connecting plate 5, the inner cavity top of connecting pipe 4 is provided with limiting groove 41, limiting groove 41 is matched with mounting plate 61.

[0022] The limiting block 72 is fixedly installed on the inner wall of sliding pipe 7 at equal intervals, and the buffer pad 74 is installed at the bottom of the inner cavity of sliding pipe 7.

[0023] The connecting groove 32 is formed in the circumferential side of fixed plate 31, and the connecting groove 32 is matched with the limiting block 72.

[0024] Specifically, when the spring 6 reaches the service life, the sliding tube 7 is rotated in the opposite direction by utilizing the screw thread 71 on the outer side of the sliding tube 7 and the screw connection relationship with the screw groove on the inner wall of the connecting tube 4, so that the two are separated. After the sliding tube 7 is separated from the connecting tube 4, the mounting plate 61 at both ends of the spring 6 is matched with the mounting groove 33 on the fixed plate 31, and the limiting groove 41 at the top of the inner cavity of the connecting tube 4 is also matched with the mounting plate 61. Therefore, after separation, the spring 6 is in the limiting groove 41 or the mounting groove 33. The mounting plate 61 can be taken out from the mounting groove 33 or the limiting groove 41, so that the spring 6 is completely taken out. The new spring 6 is put into the mounting groove 33 of the fixed plate 31 through the mounting plate 61, and then the sliding tube 7 is screw-connected with the connecting tube 4 through the screw thread 71, so that the mounting plate 61 at the top of the spring 6 is mounted into the limiting groove 41 in the inner cavity of the connecting tube 4. The limiting groove 41 and the mounting groove 33 are used to limit the spring 6, so as to avoid the problem of inclination of the spring 6 in the process of shock absorption of the spring 6, and at the same time, the replacement of the spring 6 is completed.

[0025] The limiting block 72 is matched with the connecting groove 32, which can avoid the rotation of the fixed plate 31 and the sliding rod 3 in the sliding tube 7, thereby avoiding the phenomenon that the spring 6 is twisted and thereby affecting the service life of the spring 6. The buffer pad 74 can avoid the hard contact between the fixed plate 31 and the inner cavity bottom of the sliding tube 7 during the use of the universal wheel.

[0026] In order to avoid the accidental rotation of the sliding tube 7 inside the connecting tube 4 during the use of the universal wheel, please refer to Figures 1-4 On the basis of embodiment 1, a moving tube 42 is installed on one side of the connecting tube 4. A moving plate 45 is slidably arranged in the moving tube 42. The moving plate 45 is rotationally connected with a screw rod 44. The screw rod 44 is screw-connected with the moving tube 42. One end of the screw rod 44 is arranged outside the moving tube 42 and is fixedly connected with a knob 43.

[0027] A clamping block 46 is fixedly arranged on the side of the moving plate 45 away from the screw rod 44. The clamping block 46 passes through the connecting tube 4 and corresponds to a clamping groove 73 arranged on the outer side of the sliding tube 7.

[0028] Specifically, when it is necessary to lock the sliding tube 7 to prevent it from accidentally rotating inside the connecting tube 4, the knob 43 is rotated. The rotation of the knob 43 drives the screw rod 44 to rotate. Since the screw rod 44 is screw-connected with the moving tube 42, according to the screw transmission principle, the rotation of the screw rod 44 drives the moving plate 45 to move linearly in the axial direction in the moving tube 42. The clamping block 46 on the moving plate 45 passes through the wall of the connecting tube 4 along with the movement of the moving plate 45, and finally inserts into the clamping groove 73 on the outer side of the sliding tube 7. Through the clamping of the clamping block 46 and the clamping groove 73, the circumferential rotation of the sliding tube 7 relative to the connecting tube 4 is limited, thereby avoiding the accidental rotation of the sliding tube 7 inside the connecting tube 4;

[0029] In the actual use of the universal wheel, especially in the complex road conditions or the case that the luggage frequently turns, the accidental rotation of the sliding tube 7 can cause the instability of the whole universal wheel structure. The locking of the clamping block 46 effectively prevents this situation from happening, and ensures the stability of the relative positions between the various components of the universal wheel, thereby providing reliable support for the luggage.

[0030] Working principle: when the device needs to replace the spring 6, the knob 43 is reversely rotated to drive the moving plate 45 to control the clamping block 46 to move out of the clamping groove 73, the sliding tube 7 is reversely rotated (by means of the screw connection between the sliding tube 7 and the screw groove on the inner wall of the connecting tube 4) to separate from the connecting tube 4, then the mounting plate 61 is taken out of the mounting groove 33 or the limiting groove 41, the old spring 6 can be taken out, then the mounting plate 61 at both ends of the spring 6 is respectively put into the mounting groove 33 of the fixed plate 31, then the sliding tube 7 is screw-connected with the connecting tube 4 through the screw thread 71, the mounting plate 61 at the top of the spring 6 is clamped into the limiting groove 41 in the inner cavity of the connecting tube 4, so that the spring 6 is kept stable, the replacement of the spring 6 is completed, then the knob 43 is rotated again, the screw rod 44 is rotated to drive the moving plate 45 to move linearly along the axial direction in the moving tube 42, the clamping block 46 on the moving plate 45 moves along with the moving plate 45 and passes through the wall of the connecting tube 4, and finally is inserted into the clamping groove 73 outside the sliding tube 7, the clamping block 46 is clamped with the clamping groove 73, and the circumferential rotation of the sliding tube 7 relative to the connecting tube 4 is limited.

[0031] The basic principle and main features of the utility model and the advantages of the utility model are shown and described above, and it is obvious for those skilled in the art that the utility model is not limited to the details of the above-mentioned exemplary embodiments, and the utility model can be realized in other specific forms without departing from the spirit or basic features of the utility model. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-limiting, the scope of the utility model is defined by the appended claims instead of the above description, and therefore all changes falling within the meaning and scope of the equivalent elements of the claims should be included in the utility model. Any figure reference in the claims should not be regarded as limiting the claims involved.

[0032] In addition, it should be understood that, although the present specification is described in terms of embodiments, not every embodiment contains only one independent technical solution, and the specification is described in this way only for the sake of clarity, those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that those skilled in the art can understand.

Claims

1. A silent wear-resistant universal wheel for luggage, comprising a roller (1) and a bracket (2), characterized in that: The top of the support (2) is fixedly provided with a sliding rod (3), the top of the sliding rod (3) is provided with a fixed plate (31), the top of the fixed plate (31) is provided with a mounting groove (33), the mounting groove (33) is mounted with a spring (6), the both ends of the spring (6) are connected with a mounting plate (61), the mounting plate (61) is matched with the mounting groove (33), the sliding rod (3) is slidably mounted in the sliding pipe (7) through the fixed plate (31), the outer side of the sliding pipe (7) is provided with a spiral thread (71), the sliding pipe (7) is screw-connected with the inner wall screw groove of the connecting pipe (4) through the spiral thread (71), the connecting pipe (4) is rotatably arranged at the bottom of the connecting plate (5), the inner cavity top of the connecting pipe (4) is provided with a limiting groove (41), the limiting groove (41) is matched with the mounting plate (61).

2. The silent wear-resistant universal wheel for luggage according to claim 1, characterized in that: The inner wall of the sliding pipe (7) is equidistantly fixedly provided with a limiting block (72), and the inner cavity bottom of the sliding pipe (7) is provided with a buffer pad (74).

3. The silent wear-resistant wheel for luggage according to claim 2, characterized in that: The circumferential side of the fixed plate (31) is provided with a connecting groove (32), the connecting groove (32) is matched with the limiting block (72).

4. The silent wear-resistant wheel for luggage according to claim 1, characterized in that: One side of the connecting pipe (4) is provided with a moving pipe (42), the moving pipe (42) is slidably provided with a moving plate (45), the moving plate (45) is rotatably connected with a screw rod (44), the screw rod (44) is screw-connected with the moving pipe (42), one end of the screw rod (44) is arranged at the outer side of the moving pipe (42) and is fixedly connected with a knob (43).

5. The silent wear-resistant wheel for luggage according to claim 4, characterized in that: The side, away from the screw rod (44), of the moving plate (45) is fixedly provided with a clamping block (46), the clamping block (46) passes through the connecting pipe (4) and is matched with a clamping groove (73), the clamping groove (73) is arranged at the outer side of the sliding pipe (7).

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