Front axle structure for a geriatric walker

Abstract

The utility model provides a kind of front axle structure for old age walker, including front axle assembly and suspension assembly, the front axle assembly includes front axle main body, the side portion of the front axle main body is provided with two front axle connecting seats along vertical direction, the suspension assembly includes wheel body mounting seat, the upper and lower ends of the wheel body mounting seat are rotatably provided with adapter seat, the rotation axis of the adapter seat is vertical, the upper and lower ends of the wheel body mounting seat are provided with suspension connecting arm, the inside end of the suspension connecting arm is rotatably connected with the front axle connecting seat by the rotation shaft of horizontal arrangement, the outside end of the suspension connecting arm is rotatably connected with the adapter seat by the rotation shaft of horizontal arrangement. When using, walker wheel body is rotatably connected on wheel body mounting seat. In the above-mentioned front axle structure, wheel body mounting seat is connected with front axle main body by two suspension connecting arms, and the connection stability is stronger.

Description

Technical Field

[0001] This utility model relates to accessories for elderly mobility scooters, and in particular, to a front axle structure for elderly mobility scooters. Background Technology

[0002] Currently, Chinese patent CN222136381U discloses a front axle suspension structure for a mobility scooter, including a frame and a front axle assembly connected to the front end of the frame. The front axle assembly includes a front axle body and suspension connectors connected to both sides of the front axle body. Connecting seats located on opposite sides of the front axle body are connected to the front axle body. A suspension assembly is sleeved within the suspension connectors. The suspension assembly includes a suspension body and a support seat welded to the end of the suspension body. The suspension body is sleeved within the suspension connectors. A fixing seat for mounting shock absorbers is welded to the suspension body. A front wheel mounting seat is provided at the end of the suspension assembly. The front wheel mounting seat includes a mounting body and a mounting shaft. The mounting body is sleeved on the support seat, and the mounting shaft is horizontally positioned. The mounting body can rotate around the support seat, and the wheel is mounted on the mounting shaft. However, in the above-mentioned front axle suspension structure, the wheel is only connected to the front axle assembly through one set of suspension mechanisms, resulting in relatively poor connection stability. Utility Model Content

[0003] In view of this, the purpose of this utility model is to provide a front axle structure for elderly mobility scooters, which has the advantage of relatively high connection stability with the scooter wheel.

[0004] To solve the above-mentioned technical problems, the technical solution of this utility model is: a front axle structure for an elderly mobility scooter, including a front axle assembly and a suspension assembly. The front axle assembly includes a front axle body, and two front axle connecting seats are arranged vertically on the side of the front axle body. The suspension assembly includes a wheel mounting seat, and adapter seats are rotatably arranged at both the upper and lower ends of the wheel mounting seat. The rotation axis of the adapter seats is vertical. Suspension connecting arms are arranged at both the upper and lower ends of the wheel mounting seat. The inner end of the suspension connecting arm is rotatably connected to the front axle connecting seat through a horizontally arranged rotating shaft, and the outer end of the suspension connecting arm is rotatably connected to the adapter seat through a horizontally arranged rotating shaft.

[0005] With the above technical solution, the vehicle's wheel is rotatably connected to the wheel mounting base during use. In the aforementioned front axle structure, the wheel mounting base is connected to the front axle body via two suspension connecting arms, thus enhancing the connection stability between the front axle structure and the vehicle's wheel.

[0006] Preferably, the lower suspension connecting arm includes a connecting rod and a U-shaped connecting fork. An adapter sleeve is provided at the outer end of the connecting rod, and the central axis of the adapter sleeve is perpendicular to the central axis of the connecting rod. The adapter sleeve is rotatably connected to the adapter seat via a horizontally arranged rotating shaft. An external thread is provided at the inner end of the connecting rod. A connecting through hole is opened at the outer end of the U-shaped connecting fork, and the inner end of the connecting rod passes through the connecting through hole. Two positioning nuts are threadedly connected to the inner end of the connecting rod, and both positioning nuts abut against the U-shaped connecting fork. The inner end of the U-shaped connecting fork is rotatably connected to the front axle connecting seat via a horizontally arranged rotating shaft.

[0007] Using the above technical solution, when assembling the aforementioned front axle structure, the upper suspension connecting arm is first connected to the upper front axle connecting seat, and then the lower suspension connecting arm is connected to the lower front axle connecting seat. When connecting the lower suspension connecting arm to the lower front axle connecting seat, the operator can adjust the position of the U-shaped connecting fork as needed to ensure smooth assembly. When adjusting the position of the U-shaped connecting fork, first rotate the two positioning nuts to move them away from each other. Then, control the U-shaped connecting fork to move along the axial direction of the connecting rod. Finally, when the U-shaped connecting fork has moved to the appropriate position, rotate the two positioning nuts so that they abut against the U-shaped connecting fork.

[0008] Preferably, a lubrication through hole is radially formed on the outer peripheral wall of the adapter sleeve, the lubrication through hole is connected to the inner hole of the adapter sleeve, and a plug is threaded into the lubrication through hole.

[0009] With the above technical solution, during use, it is only necessary to remove the plug and add grease to the inside of the adapter sleeve through the lubrication hole to lubricate the relative rotation between the adapter sleeve and the shaft.

[0010] Preferably, the inner wall of the adapter sleeve is provided with a plurality of annular grooves, and the plurality of annular grooves are distributed at equal intervals along the axial direction of the adapter sleeve.

[0011] By using the above technical solution, several annular grooves are opened on the inner side of the adapter sleeve, which can increase the internal space of the adapter sleeve to accommodate more grease.

[0012] Preferably, both sides of the annular groove are provided with rounded corners.

[0013] The above technical solution involves setting rounded corners on both sides of the annular groove opening to avoid stress concentration.

[0014] Preferably, the adapter sleeve includes a first connecting petal and a second connecting petal, wherein the first connecting petal and the second connecting petal are fixed by welding.

[0015] Through the above technical solution, the adapter sleeve is formed by welding and fixing connecting petal one and connecting petal two, which makes the production and processing of the adapter sleeve more convenient.

[0016] Preferably, positioning grooves are provided on both outer edges of the first connecting petal, and positioning protrusions are provided on both outer edges of the second connecting petal, with the positioning protrusions being engaged in the positioning grooves on the same side.

[0017] With the above technical solution, when the positioning protrusion is inserted into the positioning groove, the relative positions of connecting petal one and connecting petal two are fixed, which makes welding more convenient. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of an embodiment; Figure 2 This is a schematic diagram of the lower U-shaped connecting fork. Figure 3 This is a schematic diagram of the adapter sleeve.

[0019] Reference numerals: 1. Front axle assembly; 11. Front axle body; 12. Front axle connecting seat; 2. Suspension assembly; 21. Wheel mounting seat; 22. Adapter seat; 23. Suspension connecting arm; 231. Connecting rod; 232. U-shaped connecting fork; 3. Adapter sleeve; 31. Connecting petal one; 32. Connecting petal two; 4. Connecting through hole; 5. Locating nut; 6. Lubrication through hole; 7. Plug; 8. Annular groove; 9. Locating groove; 10. Locating protrusion. Detailed Implementation

[0020] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings, so that the technical solution of this utility model can be more easily understood and mastered.

[0021] A front axle structure for mobility scooters for the elderly, such as Figures 1 to 3 As shown, the device includes a front axle assembly 1 and a suspension assembly 2. The front axle assembly 1 includes a front axle body 11, with two front axle connecting seats 12 vertically positioned on the side of the front axle body 11. The suspension assembly 2 includes a wheel mounting seat 21 for mounting the vehicle's wheels. Adapter seats 22 are rotatably mounted at both the upper and lower ends of the wheel mounting seat 21, with the axis of rotation of the adapter seats 22 being vertical. Suspension connecting arms 23 are provided at both the upper and lower ends of the wheel mounting seat 21. The inner end of the suspension connecting arm 23 is rotatably connected to the front axle connecting seat 12 via a horizontally positioned pivot, and the outer end of the suspension connecting arm 23 is rotatably connected to the adapter seat 22 via a horizontally positioned pivot.

[0022] The lower suspension connecting arm 23 includes a connecting rod 231 and a U-shaped connecting fork 232. An adapter sleeve 3 is provided at the outer end of the connecting rod 231, with the central axis of the adapter sleeve 3 perpendicular to the central axis of the connecting rod 231. The adapter sleeve 3 is rotatably connected to the adapter seat 22 via a horizontally arranged rotating shaft. The inner end of the connecting rod 231 has an external thread, and the outer end of the U-shaped connecting fork 232 has a connecting through hole 4. The inner end of the connecting rod 231 passes through the connecting through hole 4, and two positioning nuts 5 are threaded onto the inner end of the connecting rod 231, both of which abut against the U-shaped connecting fork 232. The inner end of the U-shaped connecting fork 232 is rotatably connected to the front axle connecting seat 12 via a horizontally arranged rotating shaft.

[0023] A lubrication through hole 6 is radially formed on the outer peripheral wall of the adapter sleeve 3. The lubrication through hole 6 communicates with the inner hole of the adapter sleeve 3, and a plug 7 is threaded into the lubrication through hole 6. Several annular grooves 8 are formed on the inner wall of the adapter sleeve 3, and the several annular grooves 8 are evenly distributed along the axial direction of the adapter sleeve 3. Both sides of the groove opening of the annular groove 8 are provided with rounded corners.

[0024] The adapter sleeve 3 includes a first connecting piece 31 and a second connecting piece 32, which are fixed by welding. The first connecting piece 31 has a positioning groove 9 on both outer edges, and the second connecting piece 32 has a positioning protrusion 10 on both outer edges, which are engaged in the positioning groove 9 on the same side.

[0025] Of course, the above are just typical examples of this utility model. In addition, this utility model may have many other specific implementation methods. All technical solutions formed by equivalent substitution or equivalent transformation fall within the scope of protection claimed by this utility model.

Claims

1. A front axle structure for an elderly mobility scooter, characterized in that: The system includes a front axle assembly (1) and a suspension assembly (2). The front axle assembly (1) includes a front axle body (11). Two front axle connecting seats (12) are provided on the side of the front axle body (11) in a vertical direction. The suspension assembly (2) includes a wheel mounting seat (21). Both the upper and lower ends of the wheel mounting seat (21) are rotatably provided with a transition seat (22). The rotation axis of the transition seat (22) is vertical. Both the upper and lower ends of the wheel mounting seat (21) are provided with a suspension connecting arm (23). The inner end of the suspension connecting arm (23) is rotatably connected to the front axle connecting seat (12) through a horizontally arranged rotating shaft. The outer end of the suspension connecting arm (23) is rotatably connected to the transition seat (22) through a horizontally arranged rotating shaft.

2. The front axle structure for an elderly mobility scooter according to claim 1, characterized in that: The lower suspension connecting arm (23) includes a connecting rod (231) and a U-shaped connecting fork (232). The outer end of the connecting rod (231) is provided with an adapter sleeve (3). The central axis of the adapter sleeve (3) is perpendicular to the central axis of the connecting rod (231). The adapter sleeve (3) is rotatably connected to the adapter seat (22) via a horizontally arranged rotating shaft. The inner end of the connecting rod (231) is provided with an external thread. The outer end of the U-shaped connecting fork (232) is provided with a connecting through hole (4). The inner end of the connecting rod (231) passes through the connecting through hole (4). The inner end of the connecting rod (231) is threaded with two positioning nuts (5). Both positioning nuts (5) abut against the U-shaped connecting fork (232). The inner end of the U-shaped connecting fork (232) is rotatably connected to the front axle connecting seat (12) via a horizontally arranged rotating shaft.

3. The front axle structure for an elderly mobility scooter according to claim 2, characterized in that: The adapter sleeve (3) has a lubrication through hole (6) radially opened on its outer peripheral wall. The lubrication through hole (6) is connected to the inner hole of the adapter sleeve (3). A plug (7) is threaded into the lubrication through hole (6).

4. The front axle structure for an elderly mobility scooter according to claim 3, characterized in that: The inner wall of the adapter sleeve (3) is provided with a plurality of annular grooves (8), and the plurality of annular grooves (8) are distributed at equal intervals along the axial direction of the adapter sleeve (3).

5. The front axle structure for an elderly mobility scooter according to claim 4, characterized in that: The annular groove (8) has rounded corners on both sides of the groove opening.

6. The front axle structure for an elderly mobility scooter according to claim 5, characterized in that: The adapter sleeve (3) includes a first connecting petal (31) and a second connecting petal (32), which are fixed by welding.

7. The front axle structure for an elderly mobility scooter according to claim 6, characterized in that: The first connecting petal (31) has a positioning groove (9) on both outer edges, and the second connecting petal (32) has a positioning protrusion (10) on both outer edges. The positioning protrusion (10) is engaged in the positioning groove (9) on the same side.

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