Brush cutter handle seat with vibration reduction performance

Abstract

The utility model belongs to the technical field of brush cutters, and particularly relates to a brush cutter handle seat with vibration reduction performance. Comprising an operating rod mounting seat and a transmission rod mounting seat, the operating rod mounting seat comprises an operating rod upper seat and an operating rod lower seat, the transmission rod mounting seat comprises a transmission rod upper seat and a transmission rod lower seat, and the operating rod lower seat and the transmission rod upper seat are elastically connected through an elastic assembly. The elastic assembly comprises more than two upper spring seats arranged on the operating rod lower seat and more than two lower spring seats arranged on the transmission rod upper seat, the two ends of a spring are connected to the upper spring seats and the lower spring seats respectively, and a lining is arranged in the spring; according to the utility model, the operating rod mounting seat is elastically connected with the transmission rod mounting seat through the spring, and the lining is arranged in the spring, so that the rigidity of the handle seat is ensured, the vibration is attenuated, and both hands of an operator are not easy to feel too large vibration.

Description

Technical fields:

[0001] This utility model belongs to the field of brush cutter technology, specifically referring to a brush cutter handle seat with vibration reduction performance. Background technology:

[0002] A brush cutter is a machine used for cutting grass and branches, mainly for the maintenance of landscaping, clearing shrubs in forests, or tending large green belts along roadsides.

[0003] like Figures 1-3 As shown, the brush cutter includes a control lever 1 and a transmission rod 2. The control lever 1 is connected to the transmission rod 2 via a handle base. The operator holds both ends of the control lever 1 to drive the transmission rod 2 and the working head. The power system of the brush cutter and the transmission rod 2 must be rigidly connected; otherwise, the power will be significantly reduced. A traditional handle base includes an upper control lever seat 3, a lower control lever seat 4, and a transmission rod seat 5. The upper control lever seat 3 and the lower control lever seat 4 are fixedly connected to and installed on the control lever 1 by upper fastening screws 6. The bottom of the lower control lever seat 4 is also fixedly connected to the transmission rod seat 5 and installed on the transmission rod 2 by lower fastening screws 7. To alleviate the vibration transmitted from the transmission rod 2 to the control lever 1, two damping rubber sheets 8 are installed between the transmission rod 2 and the lower control lever seat 4 and the transmission rod seat 5. Each damping rubber sheet 8 is semi-cylindrical.

[0004] As can be seen from the above, the traditional handlebar structure makes the connection between the control lever 1 and the transmission lever 2 almost rigid. When the machine is working, the vibration of the transmission lever 2 will be transmitted to the control lever 1. Especially when using high-power motors, this can easily cause the operator's arms to feel sore and numb, and long-term operation can easily lead to physical discomfort. In addition, the rigid connection makes the various parts of the handlebar prone to wear and loosening, affecting the overall quality of the machine. Summary of the Invention:

[0005] The purpose of this invention is to provide a brush cutter handle seat with vibration damping properties that can attenuate vibrations and reduce the amount of vibration felt by the operator's hands.

[0006] This utility model is implemented as follows:

[0007] A brush cutter handle with vibration damping properties includes a control lever mounting base and a transmission rod mounting base. The control lever mounting base includes an upper control lever seat and a lower control lever seat, and the transmission rod mounting base includes an upper transmission rod seat and a lower transmission rod seat. The upper and lower control lever seats are fixedly connected to form a control lever hole, and the upper and lower transmission rod seats are fixedly connected to form a transmission rod hole. The lower control lever seat and the upper transmission rod seat are elastically connected by an elastic component. The elastic component includes two or more upper spring seats disposed on the lower control lever seat and two or more lower spring seats disposed on the upper transmission rod seat. The two ends of the spring are respectively connected to the upper spring seats and the lower spring seats, and an inner liner is disposed inside the spring.

[0008] In the above-mentioned brush cutter handle seat with vibration reduction performance, the upper control lever seat and the lower control lever seat are fixedly connected by a first fastening screw, and the lower end of the first fastening screw passes through the upper control lever seat and the lower control lever seat in sequence and extends out of the lower control lever seat to be screwed to the upper spring seat.

[0009] The upper and lower seats of the transmission rod are fixedly connected by a second fastening screw, and the upper end of the second fastening screw passes through the lower and upper seats of the transmission rod in sequence and extends out of the upper seat of the transmission rod to be screwed to the lower spring seat.

[0010] In the above-mentioned brush cutter handle seat with vibration damping performance, four upper spring seats, four lower spring seats, four first fastening screws and four second fastening screws are respectively provided, and four corresponding springs are also provided.

[0011] In the aforementioned brush cutter handle seat with vibration damping properties, the inner lining is a hollow cylinder.

[0012] In the aforementioned brush cutter handle seat with vibration damping properties, the liner is made of soft nylon material.

[0013] In the above-mentioned brush cutter handle seat with vibration damping performance, the upper spring seat and the lower spring seat include a spring seat body, a threaded hole is provided in the spring seat body, and a spring track recess is provided on the outer cylindrical surface of the spring seat body. The two ends of the spring are rotated to fasten the spring track recess of the upper spring seat and the lower spring seat.

[0014] In the above-mentioned brush cutter handle seat with vibration damping performance, a vibration damping rubber sleeve is provided in the transmission rod mounting hole between the upper and lower transmission rod seats, and is fitted onto the transmission rod.

[0015] In the above-mentioned brush cutter handle seat with vibration damping performance, the side wall of the vibration damping rubber sleeve is provided with an opening along the axial direction.

[0016] The outstanding advantages of this utility model compared to the prior art are:

[0017] This invention connects the joystick mounting base and the transmission rod mounting base with a spring, and includes an inner liner inside the spring to ensure the rigidity of the handle base. This minimizes relative movement between the joystick and the transmission rod, reduces vibration, and reduces the operator's discomfort from excessive vibration. It also facilitates the connection between the joystick mounting base and the transmission rod mounting base. Attached image description:

[0018] Figure 1 This is a diagram illustrating the usage status of the background technology;

[0019] Figure 2 yes Figure 1 A magnified view of a portion of the image;

[0020] Figure 3 This is an exploded schematic diagram of the handle base in the background technology;

[0021] Figure 4 This is a diagram showing the usage state of this utility model;

[0022] Figure 5 yes Figure 4 A magnified view of a portion of the image;

[0023] Figure 6 This is an exploded schematic diagram of the handle base of this utility model.

[0024] Figures 1-3 In the middle: 1. Control lever; 2. Transmission lever; 3. Upper control lever seat; 4. Lower control lever seat; 5. Transmission lever seat; 6. Fastening screw; 7. Lower fastening screw; 8. Shock-absorbing rubber sheet.

[0025] Figures 4-6 In the middle: 10. Upper seat of the control lever; 11. Lower seat of the control lever; 12. Upper seat of the transmission rod; 13. Lower seat of the transmission rod; 14. Upper spring seat; 15. Lower spring seat; 16. Spring; 17. Inner liner; 18. Control lever; 19. Transmission rod; 20. First fastening screw; 21. Second fastening screw; 22. Spring track recess; 23. Shock-absorbing rubber sleeve; 24. Opening. Detailed implementation method:

[0026] The present invention will be further described below with reference to specific embodiments:

[0027] like Figure 4-6As shown, this utility model provides a brush cutter handle with vibration reduction performance. The handle includes a control lever mounting base and a transmission rod mounting base. The control lever mounting base includes an upper control lever seat 10 and a lower control lever seat 11. The transmission rod mounting base includes an upper transmission rod seat 12 and a lower transmission rod seat 13. The upper control lever seat 10 and the lower control lever seat 11 are fixedly connected to form a control lever hole and are fastened to the control lever 18. The upper transmission rod seat 12 and the lower transmission rod seat 13 are fixedly connected to form a transmission rod hole and are fastened to the transmission rod 19. The lower control lever seat 11 and the upper transmission rod seat 12 are elastically connected by an elastic component. The elastic component includes two or more upper spring seats 14 disposed on the lower control lever seat 11 and two or more lower spring seats 15 disposed on the upper transmission rod seat 12. The two ends of a spring 16 are respectively connected to the upper spring seats 14 and the lower spring seats 15. An inner liner 17 is disposed inside the spring 16.

[0028] This invention elastically connects the joystick mounting base and the transmission rod mounting base via a spring 16, and provides an inner liner 17 inside the spring 16 to ensure the rigidity of the handle base. This prevents excessive relative movement between the joystick 18 and the transmission rod 19, damping vibration and reducing the operator's discomfort from excessive vibration. It also facilitates the connection between the joystick mounting base and the transmission rod mounting base.

[0029] Furthermore, such as Figure 6 As shown, the upper control lever seat 10 and the lower control lever seat 11 of this utility model are fixedly connected by a first fastening screw 20, and the lower end of the first fastening screw 20 passes through the upper control lever seat 10 and the lower control lever seat 11 in sequence and extends out of the lower control lever seat 11 to be screwed to the upper spring seat 14.

[0030] The upper seat 12 and the lower seat 13 of the transmission rod are fixedly connected by a second fastening screw 21, and the upper end of the second fastening screw 21 passes through the lower seat 13 and the upper seat 12 of the transmission rod in sequence and extends out of the upper seat 12 of the transmission rod to be screwed to the lower spring seat 15.

[0031] In this embodiment, four upper spring seat 14, four lower spring seat 15, four first fastening screws 20 and four four second fastening screws 21 are provided, and four corresponding springs 16 are also provided.

[0032] Specifically, the inner liner 17 is a hollow cylinder; the function of the inner liner 17 is to reduce the tension of the spring rope, ensure the overall "rigidity" of the handle seat, so that the operator will not feel that the handle seat is too soft or that the grass cutting is weak. The use of soft nylon material will prevent the vibration of the handle seat from increasing.

[0033] It should be noted that the upper spring seat 14 and the lower spring seat 15 include a spring seat body, in which a threaded hole is provided, and a spring track recess 22 is provided on the outer cylindrical surface of the spring seat body. The two ends of the spring 16 are connected to the upper spring seat 14 and the lower spring seat 15 respectively through the spring track recess 22. During installation, the two ends of the spring 16 are rotated and tightened onto the corresponding spring track recess 22, making installation quick and efficient.

[0034] In addition, in order to further reduce the vibration of the transmission rod 19 to the control lever 18, the present invention provides a shock-absorbing rubber sleeve 23 sleeved on the transmission rod 19 in the transmission rod mounting hole between the upper transmission rod seat 12 and the lower transmission rod seat 13.

[0035] Furthermore, the side wall of the shock-absorbing rubber sleeve 23 is provided with an opening 24 along the axial direction, so that the shock-absorbing rubber sleeve 23 deforms after installation, thereby increasing the vibration reduction effect.

[0036] The above embodiments are only one of the preferred embodiments of this utility model and are not intended to limit the scope of implementation of this utility model. Therefore, all equivalent changes made in accordance with the shape, structure and principle of this utility model should be covered within the protection scope of this utility model.

Claims

1. A brush cutter handlebar with vibration damping properties, characterized in that: The device includes a joystick mounting base and a transmission rod mounting base. The joystick mounting base includes an upper joystick seat (10) and a lower joystick seat (11). The transmission rod mounting base includes an upper transmission rod seat (12) and a lower transmission rod seat (13). The upper joystick seat (10) and the lower joystick seat (11) are fixedly connected to form a joystick hole. The upper transmission rod seat (12) and the lower transmission rod seat (13) are fixedly connected to form a transmission rod hole. The lower joystick seat (11) and the upper transmission rod seat (12) are elastically connected by an elastic component. The elastic component includes two or more upper spring seats (14) provided on the lower joystick seat (11) and two or more lower spring seats (15) provided on the upper transmission rod seat (12). The two ends of the spring (16) are respectively connected to the upper spring seats (14) and the lower spring seats (15). An inner liner (17) is provided inside the spring (16).

2. The brush cutter handle seat with vibration damping performance according to claim 1, characterized in that: The upper seat (10) and lower seat (11) of the control lever are fixedly connected by a first fastening screw (20), and the lower end of the first fastening screw (20) passes through the upper seat (10) and lower seat (11) in sequence and extends out of the lower seat (11) to be screwed to the upper spring seat (14). The upper seat (12) and lower seat (13) of the transmission rod are fixedly connected by a second fastening screw (21), and the upper end of the second fastening screw (21) passes through the lower seat (13) and the upper seat (12) of the transmission rod in sequence and extends out of the upper seat (12) of the transmission rod to be screwed to the lower spring seat (15).

3. A brush cutter handlebar with vibration damping properties according to claim 2, characterized in that: The upper spring seat (14), lower spring seat (15), first fastening screw (20) and second fastening screw (21) are provided in fours, and the corresponding springs (16) are also provided in fours.

4. A brush cutter handlebar with vibration damping properties according to claim 1, 2, or 3, characterized in that: The inner lining (17) is a hollow cylinder.

5. A brush cutter handlebar with vibration damping properties according to claim 4, characterized in that: The lining (17) is made of soft nylon material.

6. A brush cutter handle with vibration damping properties according to claim 1, 2, or 3, characterized in that: The upper spring seat (14) and lower spring seat (15) include a spring seat body, a threaded hole is provided in the spring seat body, and a spring trajectory recess (22) is provided on the outer cylindrical surface of the spring seat body. The two ends of the spring are rotated to fasten the spring trajectory recess (22) of the upper spring seat (14) and lower spring seat (15).

7. A brush cutter handlebar with vibration damping properties according to claim 1, 2, or 3, characterized in that: A shock-absorbing rubber sleeve (23) is provided in the transmission rod mounting hole between the upper transmission rod seat (12) and the lower transmission rod seat (13), which is sleeved on the transmission rod (19).

8. A brush cutter handlebar with vibration damping properties according to claim 7, characterized in that: The sidewall of the shock-absorbing rubber sleeve (23) has an opening (24) along the axial direction.

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