A lawn mower and adjustable upper and lower armrest structure thereof

Abstract

The utility model provides a lawn mower and an adjustable upper and lower armrest structure thereof, comprising an upper armrest, a lower armrest, a knob and a connecting bolt. A storage rack is further provided on the upper armrest and the lower armrest. A through hole is provided on each of the upper armrest and the lower armrest, a threaded hole is provided in the knob, an adjusting disk one and an adjusting disk two are respectively provided on the upper armrest and the lower armrest, a through hole is provided on each of the adjusting disks one and two, convex patterns and concave patterns are respectively provided on the end surfaces of the adjusting disks one and two, the convex patterns and the concave patterns are adapted to each other, the connecting bolt passes through the through hole one and the through hole two and is threadedly connected to the knob, by providing the adjusting disk one and the adjusting disk two and providing the convex patterns and the concave patterns, the knob and the connecting bolt are locked by the cooperation of the convex patterns and the concave patterns when clamping the upper armrest and the lower armrest, the contact area during fitting is increased, thereby increasing the connection stability and preventing the problem of slipping.

Description

Technical Field

[0001] The utility model relates to gardening equipment, in particular to a lawn mower and an adjustable upper and lower armrest structure thereof. Background Art

[0002] At present, a Chinese patent with publication number CN209897675U discloses a locking mechanism on a lawn mower armrest, including an upper armrest and a lower armrest, a connecting hole one is provided at the end of the upper armrest, and a connecting hole two is provided at the end of the lower armrest, the upper armrest and the lower armrest are connected by a locking mechanism, and the locking mechanism includes a locking knob and a connecting bolt, and the upper armrest and the lower armrest are clamped by locking rotation and threaded connection of the connecting bolt.

[0003] The above patent still has shortcomings. In the above patent, the upper armrest is a round tube, and the connection of the lower armrest is groove-shaped. When the groove-shaped connection wraps the round tube, the connection strength is high, but it is necessary to turn to the upper armrest when adjusting. When the upper armrest and the lower armrest are rotated at a certain angle, the lower armrest has only two thinner surfaces in contact with the upper armrest. At this time, the upper armrest and the lower armrest are clamped by threads for point-to-surface contact, with a small contact area and poor connection stability. When the weight of the lawn mower is heavy, the connection is prone to slippage, which causes the user to frequently readjust and tighten, affecting work efficiency. Utility Model Content

[0004] In view of this, the first object of the utility model is to provide an adjustable upper and lower armrest structure, which has the advantage of good connection stability.

[0005] In order to solve the above technical problems, the technical solution of the utility model is: an adjustable upper and lower armrest structure, including an upper armrest, a lower armrest, a knob and a connecting bolt, the upper armrest and the lower armrest are also provided with a storage rack, the upper armrest and the lower armrest are each provided with a through hole one, a threaded hole one is provided in the knob, the upper armrest and the lower armrest are respectively provided with an adjusting disk one and an adjusting disk two, the adjusting disk one and the adjusting disk two are each provided with a through hole two, the end surfaces of the adjusting disk one and the adjusting disk two are respectively provided with convex patterns and concave patterns, the convex patterns are adapted to the concave patterns, and the connecting bolt passes through the through hole one and the through hole two and is threadedly connected to the knob.

[0006] Through the above-mentioned technical means, by setting adjustment disk one and adjustment disk two, and providing convex and concave grooves, the knob and the connecting bolt can be locked through the cooperation of the convex and concave grooves when clamping the upper armrest and the lower armrest, thereby increasing the contact area during fitting, thereby increasing the connection stability and preventing slipping problems.

[0007] Preferably, arc grooves are provided on the adjusting disk 1 and the adjusting disk 2, the upper armrest is detachably connected to the adjusting disk 1, and the lower armrest is detachably connected to the adjusting disk 2.

[0008] Through the above technical means, by opening an arc groove on the adjusting disk 1 and the adjusting disk 2, the upper armrest and the lower armrest can drive the adjusting disk 1 and the adjusting disk 2 to rotate when they are inserted into the arc groove. Through the detachable connection between the adjusting disk 1 and the upper armrest and the lower armrest, it is convenient to replace the adjusting disk 1 and the adjusting disk 2 when they are worn, thereby reducing the maintenance cost.

[0009] Preferably, rubber damping blocks are further provided at the tails of the adjusting disk 1 and the adjusting disk 2, the arc-shaped groove is opened on the rubber damping blocks, and an arc-shaped push piece is further provided between the knob and the upper armrest, and the arc-shaped push piece is in contact with the upper armrest.

[0010] Through the above technical means, by setting the rubber damping block, the impact of the lawn mower vibration on the user is reduced, and the arc-shaped push piece is used to support the upper armrest to reduce the possibility of deformation of the upper armrest when the locking force is too strong.

[0011] Preferably, a spring groove is provided in the middle of the adjusting disk 1 and the adjusting disk 2, and an ejection spring is provided in the spring groove. When the knob and the connecting bolt are released from the locking state, the ejection spring presses against the adjusting disk 1 and the adjusting disk 2 to separate.

[0012] Through the above technical means, when it is necessary to adjust the height of the upper armrest and unlock the rotation and connecting bolts, the adjustment disk one and the adjustment disk two are separated by the ejection spring, so that the convex pattern and the concave pattern are separated to reach the unlocked state.

[0013] Preferably, an anti-loosening spring and a push plate are further provided in the threaded hole one, and the anti-loosening spring is arranged between the push plate and the bottom surface of the threaded hole one. When the connecting bolt is screwed into the knob, its top presses against the push plate and compresses the anti-loosening spring.

[0014] Through the above technical means, when the connecting bolt is screwed into the threaded hole, the connecting bolt is compressed by the anti-loosening spring and the thrust of the product is reduced, thereby reducing the impact of vibration on the connecting bolt and reducing the possibility of loosening of the connecting bolt due to vibration.

[0015] Preferably, the upper armrest includes a front rod, a rear rod and a locking piece, the adjustment disk is arranged on the front rod, a sleeve rod is arranged on the end of the rear rod, a damping ring is sleeved on the sleeve rod, the front rod is sleeved on the outside of the damping ring, the damping ring, the sleeve rod and the tail of the front rod are all provided with a through hole three, the locking piece passes through the through hole three and fixes the front rod and the rear rod.

[0016] Through the above technical means, by installing a damping ring on the outside of the sleeve rod, the impact of the lawn mower vibration on the operator is further reduced, thereby increasing the operating comfort.

[0017] Preferably, the locking member comprises a connecting column fixedly arranged at the bottom of the rack, the connecting column is inserted into the through hole three, a threaded hole two is formed on the end surface of the connecting column, and the front rod and the rear rod are locked by a screw cooperating with the threaded hole two.

[0018] Through the above technical means, the storage rack is fixed while the front rod and the rear rod are installed, through the cooperation of the connecting column and the screw.

[0019] The second object of the present invention is to provide a lawn mower for installing an adjustable upper and lower armrest structure.

[0020] The technical solution of the utility model is: a lawn mower, comprising an adjustable upper and lower armrest structure.

[0021] Through the above technical means, the locking stability is increased while the up and down adjustment of the lawn mower armrest is achieved, and the influence of vibration on the knob and the connecting bolt and the influence on the operator is reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural schematic diagram of an embodiment;

[0023] Figure 2 A partial cross-sectional view of an embodiment Figure 1 ;

[0024] Figure 3 A partial cross-sectional view of an embodiment Figure 2 ;

[0025] Figure 4 for Figure 3 Schematic diagram of part A.

[0026] Figure numerals: 1. upper armrest; 2. lower armrest; 3. knob; 4. connecting bolt; 5. storage rack; 7. through hole one; 8. threaded hole one; 9. adjusting disk one; 10. adjusting disk two; 11. convex pattern; 12. concave pattern; 13. arc groove; 14. spring groove; 15. ejector spring; 16. rubber damping block; 17. arc push piece; 18. anti-loosening spring; 19. push plate; 20. front rod; 21. rear rod; 22. locking piece; 23. sleeve rod; 24. damping ring; 25. through hole three; 26. connecting column. DETAILED DESCRIPTION

[0027] The specific implementation modes of the present invention are further described below in conjunction with the accompanying drawings to make the technical solutions of the present invention easier to understand and grasp.

[0028] A structure of adjustable upper and lower armrests 2, comprising an upper armrest 1, a lower armrest 2, a knob 3 and a connecting bolt 4. A storage rack 5 is also provided on the upper armrest 1 and the lower armrest 2, and the storage rack 5 is used to place lubricating oil. A through hole 7 is provided on the upper armrest 1 and the lower armrest 2, and a threaded hole 8 is provided in the knob 3. An adjusting disk 1 9 and an adjusting disk 2 10 are respectively provided on the upper armrest 1 and the lower armrest 2. A through hole 2 is provided on the adjusting disk 1 9 and the adjusting disk 2 10. A convex pattern 11 and a concave pattern 12 are respectively provided on the end surfaces of the adjusting disk 1 9 and the adjusting disk 2 10. When the convex pattern 11 is inserted into the concave pattern 12, the adjusting disk 1 9 and the adjusting disk 2 10 are locked. The connecting bolt 4 passes through the through hole 1 7 and the through hole 2 and is threadedly connected to the knob 3. When the knob 3 and the connecting bolt 4 are gradually tightened, the upper armrest 1 is slightly deformed and the convex pattern 11 fits with the concave pattern 12. At this time, the upper armrest 1 and the lower armrest 2 are locked.

[0029] The adjusting disk 1 9 and the adjusting disk 2 10 are both provided with an arc groove 13, the upper armrest 1 is detachably connected to the adjusting disk 1 9, and the lower armrest 2 is detachably connected to the adjusting disk 2 10. When the upper armrest 1 and the lower armrest 2 are respectively inserted into the arc grooves 13 of the adjusting disk 1 9 and the adjusting disk 2 10, the upper armrest 1 can drive the adjusting disk 1 9 to rotate. When the adjusting disk 1 9 and the adjusting disk 2 10 need to be replaced, they can be directly replaced, thereby reducing the maintenance cost. A spring groove 14 is provided in the middle of the adjusting disk 1 9 and the adjusting disk 2 10, and an ejection spring 15 is arranged in the spring groove 14. When the knob 3 and the connecting bolt 4 are released from the locking state, the ejection spring 15 presses against the adjusting disk 1 9 and the adjusting disk 2 10 to separate. At this time, the upper armrest 1 and the lower armrest 2 are still stuck in the arc groove 13, and the convex pattern 11 and the concave pattern 12 are separated, so as to facilitate the adjustment of the angle of the upper armrest 1 to adjust the height of the upper armrest 1.

[0030] A rubber damping block 16 is also provided at the tail of the adjusting disk 1 9 and the adjusting disk 2 10, and an arc groove 13 is opened on the rubber damping block 16 to reduce the wear of the arc groove 13 on the upper armrest 1 and the lower armrest 2 and prevent the paint on the surface of the upper armrest 1 and the lower armrest 2 from falling off. An arc push piece 17 is also provided between the knob 3 and the upper armrest 1, and the arc push piece 17 is in contact with the upper armrest 1. The arc push piece 17 reduces the pressure applied by the knob 3 to the upper armrest 1 through the arc push piece 17. When the locking force applied by the operator is strong, the possibility of deformation of the upper armrest 1 is reduced.

[0031] An anti-loosening spring 18 and a push plate 19 are also provided in the threaded hole 8. The anti-loosening spring 18 is provided between the push plate 19 and the bottom surface of the threaded hole 8. The push plate 19 is fixed to one end of the anti-loosening spring 18. When the connecting bolt 4 is screwed into the knob 3, its top is pressed against the push plate 19 and compresses the anti-loosening spring 18. When the connecting bolt 4 is screwed into the threaded hole 8, the anti-loosening spring 18 presses the connecting bolt 4 and produces thrust, thereby reducing the influence of vibration on the connecting bolt 4 and reducing the possibility of loosening of the connecting bolt 4 due to vibration.

[0032] The upper armrest 1 is U-shaped, including a pair of front rods 20, a rear rod 21 and a locking piece 22. The adjusting plate 9 is arranged on the front rod 20. The ends of the rear rod 21 are provided with sleeve rods 23. The sleeve rod 23 is provided with a damping ring 24. The front rod 20 is hollow and sleeved on the outside of the damping ring 24. The damping ring 24, the sleeve rod 23 and the tail of the front rod 20 are all provided with a through hole 25. The locking piece 22 passes through the through hole 25 and fixes the front rod 20 and the rear rod 21. The locking piece 22 is provided with a through hole 25. Component 22 includes a connecting column 26 fixedly arranged at the bottom of the storage rack 5, the connecting column 26 is inserted into the through hole 3 25, and a threaded hole 2 is opened on the end surface of the connecting column 26. The front rod 20 and the rear rod 21 are locked by the cooperation of the screw and the threaded hole 2. The storage rack 5 is fixed while the front rod 20 and the rear rod 21 are installed by the cooperation of the connecting column 26 and the screw. By arranging a damping ring 24 between the front rod 20 and the rear rod 21, the influence of the vibration of the lawn mower on the user is reduced.

[0033] A lawn mower is used for installing an adjustable upper and lower armrest 2 structure, which can realize the upper and lower adjustment of the lawn mower armrest while increasing the locking stability and reducing the influence of vibration on the knob 3 and the connecting bolt 4 and the influence on the operator.

[0034] Of course, the above are only typical examples of the present invention. In addition, the present invention may have many other specific implementations. Any technical solutions formed by equivalent replacement or equivalent transformation fall within the scope of protection required by the present invention.

Claims

1. An adjustable upper and lower armrest structure, comprising an upper armrest (1), a lower armrest (2), a knob (3) and a connecting bolt (4), wherein a storage rack (5) is provided on the upper armrest (1) and the lower armrest (2), a through hole (7) is provided on the upper armrest (1) and the lower armrest (2), and a threaded hole (8) is provided in the knob (3), wherein: The upper armrest (1) and the lower armrest (2) are respectively provided with an adjusting disk 1 (9) and an adjusting disk 2 (10), each of which is provided with a through hole 2, and the end surfaces of the adjusting disk 1 (9) and the adjusting disk 2 (10) are respectively provided with a convex pattern (11) and a concave pattern (12), the convex pattern (11) being adapted to the concave pattern (12), and the connecting bolt (4) passes through the through hole 1 (7) and the through hole 2 and is threadedly connected to the knob (3).

2. The adjustable upper and lower armrest structure according to claim 1 is characterized in that: The adjusting disk 1 (9) and the adjusting disk 2 (10) are both provided with an arc groove (13); the upper armrest (1) is detachably connected to the adjusting disk 1 (9); and the lower armrest (2) is detachably connected to the adjusting disk 2 (10).

3. The adjustable upper and lower armrest structure according to claim 2 is characterized in that: The tail of the adjusting disk 1 (9) and the adjusting disk 2 (10) is also provided with a rubber damping block (16), the arc groove (13) is opened on the rubber damping block (16), and an arc push piece (17) is also provided between the knob (3) and the upper armrest (1), and the arc push piece (17) is in contact with the upper armrest (1).

4. The adjustable upper and lower armrest structure according to claim 1 is characterized in that: A spring groove (14) is provided in the middle of the adjusting disk 1 (9) and the adjusting disk 2 (10), and an ejection spring (15) is arranged in the spring groove (14). When the knob (3) and the connecting bolt (4) are released from the locking state, the ejection spring (15) presses against the adjusting disk 1 (9) and the adjusting disk 2 (10) to separate.

5. The adjustable upper and lower armrest structure according to claim 1 is characterized in that: An anti-loosening spring (18) and a push plate (19) are also arranged in the threaded hole (8). The anti-loosening spring (18) is arranged between the push plate (19) and the bottom surface of the threaded hole (8). When the connecting bolt (4) is screwed into the knob (3), its top is pressed against the push plate (19) and compresses the anti-loosening spring (18).

6. The adjustable upper and lower armrest structure according to claim 1 is characterized in that: The upper armrest (1) comprises a front rod (20), a rear rod (21) and a locking piece (22); the adjusting disc (9) is arranged on the front rod (20); a sleeve rod (23) is arranged on the end of the rear rod (21); a damping ring (24) is sleeved on the sleeve rod (23); the front rod (20) is sleeved on the outside of the damping ring (24); the damping ring (24), the sleeve rod (23) and the tail of the front rod (20) are all provided with a through hole (25); the locking piece (22) passes through the through hole (25) and fixes the front rod (20) and the rear rod (21).

7. The adjustable upper and lower armrest structure according to claim 6 is characterized in that: The locking member (22) comprises a connecting column (26) fixedly arranged at the bottom of the storage rack (5), the connecting column (26) being inserted into the third through hole (25), and a second threaded hole being provided on the end surface of the connecting column (26), and the front rod (20) and the rear rod (21) are locked by a screw cooperating with the second threaded hole.

8. A lawn mower, characterized by: It comprises the adjustable upper and lower armrest structure as described in any one of claims 1-7.

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