Connecting hub

Abstract

The connecting hub comprises a connecting hub body, the connecting hub body comprises a connecting shaft part used for being connected with a rotating shaft and a hub connecting part used for being connected with a hub, the connecting shaft part and the hub connecting part are mutually fixed, a plurality of first counter bores are formed in the hub connecting part in the circumferential direction in a penetrating mode, and a through hole matched with the rotating shaft is formed in the connecting shaft part in a penetrating mode; a key groove is formed in the side wall of the through hole in the length direction of the through hole in a penetrating mode, a deformation groove communicated with the through hole is formed in the outer wall of the connecting shaft part in the length direction of the through hole in a penetrating mode, the parts, located at the two ends of the deformation groove, of the connecting shaft part are deformation parts, and the two deformation parts are fixedly connected through bolts and nuts. The connecting shaft part is matched with the flat key on the rotating shaft by forming the key groove, the transmission precision and reliability between the shaft and the connecting shaft part are improved, meanwhile, torque is transmitted, vibration and impact are absorbed, and the connecting stability of the rotating shaft and the connecting hub can be improved.

Description

Technical Field

[0001] The utility model relates to the field of connecting hubs, in particular to a connecting hub. Background Art

[0002] Go-karts or beach buggies are becoming more and more popular as people's entertainment projects. The rotating shafts on the go-karts or beach buggies need to be connected to the tires through a connecting hub.

[0003] The connection hub of the related art is directly connected to the rotating shaft by means of a clamp, and then connected to the hub on the tire by means of bolts and nuts. Since the bolts and washers in the clamp connection are easily affected by the outside world, the kart or beach buggy is prone to vibration during driving. The loose bolts will cause the connection between the connection hub and the rotating shaft to loosen, making it difficult for the rotating shaft to drive the tire to rotate synchronously, affecting the normal driving of the kart or beach buggy. Utility Model Content

[0004] In order to improve the connection stability between the rotating shaft and the connecting hub, the present application provides a connecting hub.

[0005] The present application provides a connecting hub adopting the following technical solution:

[0006] A connecting hub comprises a connecting hub body, wherein the connecting hub body comprises a connecting shaft portion for connecting a rotating shaft and a connecting hub portion for connecting a vehicle hub, which are fixed to each other, a plurality of first countersunk holes are formed on the connecting hub portion in a circumferential direction, a through hole matching the rotating shaft is formed on the connecting shaft portion, a key groove is formed on the side wall of the through hole in a length direction of the through hole, a deformation groove connected to the through hole is formed on the outer wall of the connecting shaft in a length direction of the through hole, the parts of the connecting shaft portion located at both ends of the deformation groove are deformation portions, and the two deformation portions are fixedly connected by bolts and nuts.

[0007] By adopting the above technical solution, the coupling part is equipped with a keyway to cooperate with the flat key on the rotating shaft, thereby improving the transmission accuracy and reliability between the shaft and the coupling part, while transmitting torque and absorbing vibration and impact, which can improve the connection stability between the rotating shaft and the connecting hub.

[0008] Preferably, the deformation groove and the key groove are arranged opposite to each other and are respectively located on two sides of the through hole.

[0009] By adopting the above technical solution, the function of the deformation groove is to provide deformation space for the connecting hub body, and the function of the keyway is to cooperate with the flat key on the rotating shaft. The functions of the two are different, so the deformation groove is set away from the keyway, which can reduce the mutual influence between the two and allow each to perform its due function.

[0010] Preferably, the two deformation parts are fixed by two sets of bolts and nuts, and the two sets of bolts and nuts are distributed on the connecting shaft along the length of the through hole.

[0011] By adopting the above technical solution, two sets of bolts and nuts are fixedly connected to the two deformation parts, which can improve the firmness of the two deformation parts in clamping the rotating shaft.

[0012] Preferably, one end of the through hole and the keyway close to the hub portion extends toward one side of the hub portion to penetrate the hub portion.

[0013] By adopting the above technical solution and increasing the length of the through hole and the keyway, the installation freedom of the rotating shaft can be improved.

[0014] Preferably, it further comprises a driving assembly, a sliding groove is provided on the side wall of the keyway, a sliding block is slidably connected in the sliding groove along the width direction of the keyway, the driving assembly is used to drive the sliding block to slide, and the sliding block is used to abut the flat key of the rotating shaft.

[0015] By adopting the above technical solution, the slider is driven to move by the driving assembly, and the slider can abut against the flat key, so that the keyway can adapt to flat keys of different widths on the rotating shaft, thereby improving the applicability of the connecting hub.

[0016] Preferably, the driving assembly includes a first spring, a driving block, a threaded rod and a swivel head, the two ends of the first spring are respectively arranged on the bottom wall of the slide groove and the slider, the driving block slides in the connecting hub body along a sliding direction perpendicular to the slider, the driving block is provided with an inclined surface, the first spring is used to drive the slider toward the side away from the slide groove and abut against the inclined surface, the threaded rod is threadedly connected in the connecting hub body, one end of the threaded rod is rotatably connected to the driving block, the other end of the threaded rod is arranged on the swivel head, and a recessed groove for the swivel head to move is provided on the outer wall of the connecting hub body.

[0017] By adopting the above technical solution, the rotating head drives the threaded rod to rotate, and the threaded rod drives the driving block to move during the rotation process. The inclined surface on the driving block abuts against the slider, and drives the slider to move by cooperating with the first spring, thereby changing the extension length of the slider in the key slot.

[0018] Preferably, the rotating head includes a fixed block, a sleeve cover and a second spring, the fixed block is fixedly arranged on the threaded rod, the sleeve cover is sleeved and slides on the fixed block along the axial direction of the threaded rod, the two ends of the second spring are respectively fixedly arranged on the inner bottom wall of the sleeve cover and the fixed block, the outer wall of the sleeve cover is provided with a tooth portion along the circumferential direction, the inner wall of the end of the groove away from the driving block is provided with a tooth groove matching the tooth portion along the circumferential direction, and the outer end surface of the sleeve cover is provided with a cross groove; when there is no external force, the tooth portion on the sleeve cover is meshed with the tooth groove.

[0019] By adopting the above technical solution, when there is no need to adjust the position of the slider, there is no external force acting on the cover, and the cover moves to the end of the groove under the action of the second spring. At this time, the teeth on the cover are engaged with the tooth groove, and the cover cannot be rotated. At the same time, the fixed block and the threaded rod cannot be rotated, and the position of the driving block and the slider cannot be changed; when the position of the slider needs to be changed, the operator presses down the cover to disengage the teeth on the cover from the tooth groove, and then rotates the cover to adjust the position of the slider.

[0020] The technical effects of this utility model are mainly reflected in the following aspects:

[0021] 1. The coupling of the utility model has a keyway which cooperates with the flat key on the rotating shaft, thereby improving the transmission accuracy and reliability between the shaft and the coupling, while transmitting torque and absorbing vibration and impact, and improving the connection stability between the rotating shaft and the connecting hub;

[0022] 2. The utility model drives the slider to move through the driving assembly, and the slider can abut against the flat key, so that the keyway can adapt to the flat keys of different widths on the rotating shaft, thereby improving the applicability of the connecting hub. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the connection between the hub, the tire and the rotating shaft in an embodiment of the present application.

[0024] Figure 2 It is a schematic diagram of the connection between the connecting hub and the tire hub in an embodiment of the present application.

[0025] Figure 3 It is a schematic diagram of the structure of the connecting hub according to an embodiment of the present application.

[0026] Figure 4 is along Figure 3 Section view along line AA.

[0027] Figure 5 It is an enlarged view of point B in the embodiment of the present application.

[0028] Explanation of the reference numerals: 1. connecting hub body; 11. connecting shaft; 111. through hole; 112. keyway; 1121. slide groove; 113. deformation groove; 114. deformation part; 12. connecting hub part; 121. first countersunk hole; 13. countersunk groove; 131. tooth groove; 2. rotating shaft; 21. flat key; 3. tire; 31. hub; 4. driving assembly; 41. first spring; 42. driving block; 421. inclined surface; 43. threaded rod; 44. rotating head; 441. fixing block; 4411. cross groove; 442. cover; 4421. tooth part; 443. second spring; 5. sliding block. DETAILED DESCRIPTION

[0029] The following is combined with Figure 1-5The present application is further described in detail to make the technical solution of the present application easier to understand and grasp.

[0030] An embodiment of the present application discloses a connecting hub.

[0031] Reference Figure 1-Figure 3 A connecting hub of the present embodiment includes a connecting hub body 1, which includes a connecting shaft portion 11 for connecting a rotating shaft 2 and a connecting hub portion 12 for connecting a vehicle hub 31, which are fixed to each other. A plurality of first countersunk holes 121 are circumferentially penetrated on the connecting hub portion 12, a through hole 111 matching the rotating shaft 2 is penetrated on the connecting shaft portion 11, a key groove 112 is penetrated on the side wall of the through hole 111 along the length direction of the through hole 111, a deformation groove 113 connected to the through hole 111 is penetrated on the outer wall of the connecting shaft portion 11 along the length direction of the through hole 111, and the parts of the connecting shaft portion 11 located at both ends of the deformation groove 113 are deformation portions 114, and the two deformation portions 114 are fixedly connected by bolts and nuts.

[0032] Reference Figure 1-Figure 3 The coupling part 11 is provided with a keyway 112, which cooperates with the flat key 21 on the rotating shaft 2, thereby improving the transmission accuracy and reliability between the shaft and the coupling part 11, while transmitting torque and absorbing vibration and impact, and can improve the connection stability between the rotating shaft 2 and the connecting hub.

[0033] Reference Figure 1-Figure 3 The deformation groove 113 and the key groove 112 are arranged opposite to each other and are respectively located on both sides of the through hole 111. The function of the deformation groove 113 is to provide a deformation space for the connecting hub body 1, and the function of the key groove 112 is to cooperate with the flat key 21 on the rotating shaft 2. The functions of the two are different, so the deformation groove 113 is arranged away from the key groove 112, which can reduce the mutual influence between the two and each can play its due function.

[0034] Reference Figure 1-Figure 3 The two deformation parts 114 are fixed by two sets of bolts and nuts, and the two sets of bolts and nuts are distributed on the shaft connection part 11 along the length of the through hole 111. The two sets of bolts and nuts are fixedly connected to the two deformation parts 114, which can improve the firmness of the two deformation parts 114 to tighten the rotating shaft 2.

[0035] Reference Figure 1-Figure 3 The through hole 111 and the keyway 112 are close to the hub portion 12 and extend toward one side of the hub portion 12 to penetrate the hub portion 12. By increasing the length of the through hole 111 and the keyway 112, the installation freedom of the rotating shaft 2 can be improved.

[0036] Reference Figure 3-Figure 5, further comprising a driving assembly 4, a slide groove 1121 is provided on the side wall of the key slot 112, a slider 5 is slidably connected in the slide groove 1121 along the width direction of the key slot 112, the driving assembly 4 is used to drive the slider 5 to slide, and the slider 5 is used to abut against the flat key 21 of the rotating shaft 2. The driving assembly 4 drives the slider 5 to move, and the slider 5 can abut against the flat key 21, so that the key slot 112 can adapt to the flat keys 21 of different widths on the rotating shaft 2, thereby improving the applicability of the connecting hub.

[0037] Reference Figure 3-Figure 5 The driving assembly 4 includes a first spring 41, a driving block 42, a threaded rod 43 and a rotating head 44. The two ends of the first spring 41 are respectively arranged on the bottom wall of the slide groove 1121 and the slider 5. The driving block 42 slides in the connecting hub body 1 along a sliding direction perpendicular to the slider 5. The driving block 42 is provided with an inclined surface 421. The first spring 41 is used to drive the slider 5 toward the side away from the slide groove 1121 and abut against the inclined surface 421. The threaded rod 43 is threadedly connected in the connecting hub body 1. One end of the threaded rod 43 is rotatably connected to the driving block 42. The other end of the threaded rod 43 is arranged on the rotating head 44. The outer wall of the connecting hub body 1 is provided with a sink 13 for the rotating head 44 to move. The first spring 41 and the driving block 42 do not affect each other.

[0038] Reference Figure 3-Figure 5 By rotating the rotating head 44, the rotating head 44 drives the threaded rod 43 to rotate. During the rotation process, the threaded rod 43 drives the driving block 42 to move. The inclined surface 421 on the driving block 42 abuts against the slider 5, and drives the slider 5 to move by cooperating with the first spring 41, thereby changing the protruding length of the slider 5 in the key slot 112.

[0039] Reference Figure 3-Figure 5 The rotating head 44 includes a fixed block 441, a cover 442 and a second spring 443. The fixed block 441 is fixedly arranged on the threaded rod 43. The cover 442 is sleeved and slides on the fixed block 441 along the axial direction of the threaded rod 43. The two ends of the second spring 443 are respectively fixedly arranged on the inner bottom wall of the cover 442 and the fixed block 441. A tooth portion 4421 is provided on the outer wall of the cover 442 in the circumferential direction. A tooth groove 131 matching the tooth portion 4421 is provided on the inner wall of the end of the sink 13 away from the driving block 42 in the circumferential direction. A cross groove 4411 is provided on the outer end surface of the cover 442. When there is no external force, the tooth portion 4421 on the cover 442 is meshed with the tooth groove 131.

[0040] Reference Figure 3-Figure 5When there is no need to adjust the position of the slider 5, there is no external force acting on the cover 442, and the cover 442 moves to the end of the sink 13 under the action of the second spring 443. At this time, the tooth portion 4421 on the cover 442 is engaged with the tooth groove 131, and the cover 442 cannot rotate. At the same time, the fixed block 441 and the threaded rod 43 cannot rotate, and the position of the driving block 42 and the slider 5 cannot be changed; when the position of the slider 5 needs to be changed, the operator presses down the cover 442 to disengage the tooth portion 4421 on the cover 442 from the tooth groove 131, and then rotates the cover 442 to adjust the position of the slider 5.

[0041] Of course, the above are only typical examples of the present application. In addition, the present application may have many other specific implementation methods. All technical solutions formed by equivalent replacement or equivalent transformation fall within the scope of protection required by the present application.

Claims

1. A connecting hub, characterized in that: The invention comprises a connecting hub body (1), wherein the connecting hub body (1) comprises a connecting shaft portion (11) for connecting a rotating shaft (2) and a connecting hub portion (12) for connecting a wheel hub (31) which are fixed to each other, a plurality of first countersunk holes (121) are provided on the connecting hub portion (12) along the circumferential direction, a through hole (111) matching the rotating shaft (2) is provided on the connecting shaft portion (11), a key groove (112) is provided on the side wall of the through hole (111) along the length direction of the through hole (111), a deformation groove (113) communicating with the through hole (111) is provided on the outer wall of the connecting shaft portion (111) along the length direction of the through hole (111), and the parts of the connecting shaft portion (111) located at the two ends of the deformation groove (113) are deformation portions (114), and the two deformation portions (114) are fixedly connected by bolts and nuts.

2. A connecting hub according to claim 1, characterized in that: The deformation groove (113) and the key groove (112) are arranged opposite to each other and are respectively located on two sides of the through hole (111).

3. A connecting hub according to claim 1, characterized in that: The two deformation parts (114) are fixed by two sets of bolts and nuts, and the two sets of bolts and nuts are distributed on the shaft connection part (11) along the length of the through hole (111).

4. A connecting hub according to claim 1, characterized in that: One end of the through hole (111) and the keyway (112) close to the hub portion (12) extends toward one side of the hub portion (12) to penetrate the hub portion (12).

5. A connecting hub according to claim 1, characterized in that: The invention also comprises a driving assembly (4), wherein a sliding groove (1121) is provided on a side wall of the key groove (112), a sliding block (5) is slidably connected in the sliding groove (1121) along the width direction of the key groove (112), the driving assembly (4) is used to drive the sliding block (5) to slide, and the sliding block (5) is used to abut against the flat key (21) of the rotating shaft (2).

6. A connecting hub according to claim 5, characterized in that: The driving assembly (4) comprises a first spring (41), a driving block (42), a threaded rod (43) and a rotating head (44); the two ends of the first spring (41) are respectively arranged on the bottom wall of the slide groove (1121) and the slider (5); the driving block (42) slides in the connecting hub body (1) along a sliding direction perpendicular to the slider (5); an inclined surface (421) is provided on the driving block (42); the first spring (41) is used to drive the slider (5) toward a side away from the slide groove (1121) and abut against the inclined surface (421); the threaded rod (43) is threadedly connected in the connecting hub body (1); one end of the threaded rod (43) is rotatably connected to the driving block (42); the other end of the threaded rod (43) is arranged on the rotating head (44); and a sink groove (13) for the rotating head (44) to move is provided on the outer wall of the connecting hub body (1).

7. A connecting hub according to claim 6, characterized in that: The rotating head (44) comprises a fixed block (441), a cover (442) and a second spring (443); the fixed block (441) is fixedly arranged on the threaded rod (43); the cover (442) is sleeved and slides on the fixed block (441) along the axial direction of the threaded rod (43); the two ends of the second spring (443) are respectively fixedly arranged on the inner bottom wall of the cover (442) and the fixed block (441); a tooth portion (4421) is provided on the outer wall of the cover (442) in the circumferential direction; a tooth groove (131) matching the tooth portion (4421) is provided on the inner wall of one end of the sink (13) away from the driving block (42) in the circumferential direction; and a cross groove (4411) is provided on the outer end surface of the cover (442); when no external force is applied, the tooth portion (4421) on the cover (442) meshes with the tooth groove (131).

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