Throttle auxiliary brake mechanism and lawn mower
By designing the coordination between the limit part and the slider on the pedal arm of the lawn mower, the accelerator brake function is realized, which solves the safety hazards caused by the lawn mower's car slip and improves the safety during use.
Patent Information
- Application Number
- CN202421483377.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-26
- Publication Date
- 2025-04-08
- Estimated Expiration
- 2034-06-26
AI Technical Summary
The lawn mower may slip when going uphill, resulting in safety hazards.
A throttle-assisted brake mechanism is designed, including a frame, slider, elastic, brake cable and pedal arm. By designing the first limiting part and the second limiting part on the pedal arm, and cooperating with the connecting part on the slide, the accelerator-assisted braking function is realized.
Effectively prevent the phenomenon of slitting, reduce the speed of slitting, provide operators with sufficient time to take brake measures, improve the safety of the use process, and eliminate safety hazards.
Smart Images
Figure CN222722042U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of lawn mowers, in particular to a throttle auxiliary brake mechanism and a lawn mower. Background Art
[0002] A lawn mower is a mechanical tool used to trim grass and vegetation. It is mainly composed of a cutter disc, an engine, a travel mechanism, a blade, a control part, and other structures. When going uphill, if the operator does not add oil to the lawn mower or the lawn mower is in neutral, the lawn mower is likely to slide backwards, which is called "slipping". When the whole vehicle slips, if the operator does not apply the brakes in time, there may be certain safety hazards. Utility Model Content
[0003] In view of the defects in the prior art, the purpose of the utility model is to provide a throttle-assisted brake mechanism and a lawn mower to improve the safety of the use process and eliminate potential safety hazards.
[0004] In order to achieve the above-mentioned purpose, the utility model provides a throttle-assisted brake mechanism, including a frame; a slider, which is slidably fitted on the frame, and a connecting portion is provided on the slider; an elastic member, which is used to apply elastic force to the slider so that the slider has a tendency to move in one direction; a brake cable, one end of which is connected to the slider; and a pedal arm, which is rotatably arranged on the frame, and a first limit portion and a second limit portion are provided on the pedal arm, and the first limit portion and the second limit portion can be respectively matched with the connecting portion; when the first limit portion is matched with the connecting portion and the pedal arm rotates, the slider moves on the frame; when the second limit portion is matched with the connecting portion and the pedal arm rotates, the slider and the frame have no relative movement.
[0005] Preferably, the first limiting portion is a first limiting hole, the second limiting portion is a second limiting hole, and the second limiting hole is communicated with the first limiting hole; the connecting portion is a connecting column, and the connecting column can be slidably fitted in the first limiting hole and the second limiting hole respectively.
[0006] Preferably, the first limiting hole is a straight hole, the second limiting hole is an arc-shaped hole, and the center of the second limiting hole is located on the rotation axis of the pedal arm.
[0007] Preferably, a connecting hole is provided on the sliding block, and one end of the elastic member is connected to the connecting hole.
[0008] Preferably, the slider is provided with a mounting notch, and the brake cable is fastened to the slider after passing through the mounting notch.
[0009] Preferably, the slider is provided with a third limit hole, the frame is provided with a support seat, the support seat is provided with at least two limit columns, and the limit columns pass through the third limit hole; it also includes a limit block, which is detachably inserted into the limit column, and the slider is located between the support seat and the limit block.
[0010] Preferably, a screw is provided on the side of the limiting column away from the support seat, and the outer diameter of the screw is smaller than the outer diameter of the limiting column; the limiting block is passed through the screw, and a locking nut is threaded on the screw, and the locking nut abuts against the limiting block.
[0011] Preferably, the thickness of the sliding block is smaller than the height of the limiting column; the limiting block is provided with through holes corresponding to the number of the screw rods, and the inner diameter of the through hole is smaller than the outer diameter of the limiting column.
[0012] Preferably, the support seat is bent to form a connecting block.
[0013] The utility model also provides a lawn mower, comprising the above-mentioned throttle auxiliary brake mechanism.
[0014] Beneficial effects of the utility model:
[0015] The utility model discloses a throttle auxiliary brake mechanism and a lawn mower, which respectively cooperate with the connecting part on the slider by designing a first limiting part and a second limiting part on the pedal arm. When the operator does not step on the pedal arm, the connecting part cooperates with the first limiting part, and the brake cable drives the brake assembly to provide a certain braking effect on the whole vehicle. In this way, even if the whole vehicle slips, the slipping speed will not be too fast, and the operator has time to take other safety measures such as stepping on the brakes to stop the whole vehicle from slipping. In this way, the safety during use is improved and safety hazards are eliminated.
[0016] When the operator gradually steps on the pedal arm, the connecting part cooperates with the first limit part, and the slider causes the brake cable to drive the brake assembly to gradually release the brake state of the lawn mower. When the connecting part is completely engaged with the second limit part, the brake assembly is completely released from the braking state, and the slider does not move. The operator continues to step on the pedal arm deeply to increase the forward speed of the lawn mower, so that the lawn mower can accelerate according to demand to meet the use requirements. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] In order to more clearly illustrate the specific implementation of the utility model or the technical solution in the prior art, the following is a brief introduction to the drawings required for the specific implementation or the prior art description. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, each element or part is not necessarily drawn according to the actual scale.
[0018] Figure 1 A schematic diagram of the structure of a throttle auxiliary brake mechanism provided in one embodiment of the utility model;
[0019] Figure 2 It is a partial schematic diagram of the cooperation between the connecting column and the first limiting hole;
[0020] Figure 3 It is a partial schematic diagram of the cooperation between the connecting column and the second limiting hole;
[0021] Figure 4 for Figure 3 Structural diagram of another perspective in the state;
[0022] Figure 5 is a schematic diagram of the structure of the pedal arm;
[0023] Figure 6 It is a structural schematic diagram of the slider;
[0024] Figure 7 It is a schematic diagram of the structure of the slider, the elastic member and the brake cable;
[0025] Figure 8 It is a structural schematic diagram of the support seat;
[0026] Fig. 9 It is a schematic diagram of the structure of the cooperation between the limiting column and the third limiting hole;
[0027] Fig.10 It is a schematic diagram of the structure of the cooperation between the limit block and the limit column;
[0028] Fig.11 for Fig.10 Structural diagram of another perspective in the state;
[0029] Fig.12 It is a cross-sectional schematic diagram of the cooperation between the slider, the limit block and the support seat;
[0030] Reference numerals:
[0031] 10. Frame; 11. Rotating shaft; 20. Slider; 21. Connecting column; 22. Connecting hole; 23. Mounting notch; 24. Third limiting hole; 30. Elastic member; 40. Brake cable; 50. Pedal arm; 51. First limiting hole; 52. Second limiting hole; 60. Support seat; 61. Limiting column; 62. Screw; 63. Locking nut; 64. Connecting block; 70. Limiting block. DETAILED DESCRIPTION
[0032] The following embodiments of the technical solution of the utility model are described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the utility model, and are therefore only used as examples, and cannot be used to limit the protection scope of the utility model.
[0033] It should be noted that, unless otherwise specified, the technical terms or scientific terms used in this application should have the common meanings understood by technicians in the field to which the utility model belongs.
[0034] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.
[0035] In addition, the terms "first", "second", etc. are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. In the description of the present utility model, the meaning of "plurality" is more than two, unless otherwise clearly and specifically limited.
[0036] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.
[0037] In the present application, unless otherwise clearly specified and limited, a first feature being “above” or “below” a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being “above”, “above”, and “above” a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being “below”, “below”, and “below” a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.
[0038] Embodiment 1
[0039] like Figure 1-12 As shown, in one embodiment of the present invention, a throttle auxiliary brake mechanism is provided, including a frame 10, a slider 20, an elastic member 30, a brake cable 40 and a pedal arm 50. The slider 20 is slidably fitted on the frame 10 along the length direction of the frame 10, and a connecting portion is provided on the slider 20. The elastic member 30 is used to apply elastic force to the slider 20 so that the slider 20 has a direction ( Figure 2 In the state, the right side of the frame 10) moves. One end of the brake cable 40 is connected to the slider 20, and the brake cable 40 is in the prior art and will not be described in detail in this embodiment.
[0040] The pedal arm 50 is fixed on the rotating shaft 11, and the rotating shaft 11 is rotatably arranged on the frame 10. The pedal arm 50 is provided with a first limiting portion and a second limiting portion, and the first limiting portion and the second limiting portion can be matched with the connecting portion respectively. When the first limiting portion is matched with the connecting portion and the pedal arm 50 rotates, the slider 20 moves on the frame 10. When the second limiting portion is matched with the connecting portion and the pedal arm 50 rotates, the slider 20 and the frame 10 do not move relative to each other.
[0041] See also Figure 2 When the pedal arm 50 is in the initial state, the first limit portion cooperates with the connecting portion, the slider 20 is in the rightmost position, and the brake cable 40 drives the brake assembly (not shown in the drawings) to provide a certain braking effect on the entire vehicle.
[0042] When the operator steps on the pedal arm 50 ( Figure 2 In the embodiment, the pedal arm 50 rotates clockwise following the rotating shaft 11), the pedal arm 50 rotates clockwise, and the first limit portion cooperates with the connecting portion to gradually move the slider 20 toward the left side of the frame 10. In this way, the slider 20 gradually causes the brake cable 40 to drive the brake assembly to release the braking state.
[0043] The pedal arm 50 continues to rotate clockwise, and when the second limit portion cooperates with the connecting portion, the brake assembly is completely released from the braking state, and the slider 20 does not move. In this way, even if the operator continues to step deeply on the pedal arm 50, the slider 20 will not pull the brake cable 40.
[0044] When the operator releases the pedal arm 50, the pedal arm 50 returns to the initial state, the connecting portion is again matched with the first limit portion, and the brake cable 40 drives the brake assembly to brake the lawn mower. In this process, under the action of the elastic member 30, the slider 20 is pulled to move to the right side of the frame 10 to return to its original state.
[0045] The throttle auxiliary brake mechanism disclosed in this embodiment is designed with a first limit part and a second limit part on the pedal arm 50 to cooperate with the connection part on the slider 20 respectively. When the operator does not step on the pedal arm 50, the connection part cooperates with the first limit part, and the brake cable 40 drives the brake assembly to provide a certain braking effect on the whole vehicle. In this way, even if the whole vehicle slips, the slipping speed will not be too fast, and the operator has time to take other safety measures such as stepping on the brakes to stop the whole vehicle from slipping. In this way, the safety during use is improved and potential safety hazards are eliminated.
[0046] When the operator gradually steps on the pedal arm 50, the slider 20 will make the brake cable 40 drive the brake assembly to gradually release the brake state of the lawn mower while the connection part cooperates with the first limit part. When the connection part is completely engaged with the second limit part, the brake assembly is completely released from the brake state, and the slider 20 will not move. The operator continues to step on the pedal arm 50 deeply to increase the forward speed of the lawn mower, so that the lawn mower can accelerate according to demand to meet the use requirements.
[0047] Specifically, the first limiting portion is a first limiting hole 51, and the second limiting portion is a second limiting hole 52, and the second limiting hole 52 is connected to the first limiting hole 51. The connecting portion is a connecting column 21, and the connecting column 21 can be slidably fitted in the first limiting hole 51 and the second limiting hole 52 respectively. The first limiting hole 51 is a straight hole, and the second limiting hole 52 is an arc hole, and the center of the second limiting hole 52 is located on the rotation axis 11 of the pedal arm 50.
[0048] When the operator steps on the pedal arm 50, the inner side wall of the first limiting hole 51 pushes against the connecting column 21, so that the connecting column 21 drives the slider 20 to move toward the left side of the frame 10. When the connecting column 21 enters the second limiting hole 52, since the second limiting hole 52 is an arc hole and the center of the second limiting hole 52 is located on the axis of the rotating shaft 11, even if the operator continues to step on the pedal arm 50, the inner side wall of the second limiting hole 52 will not push against the connecting column 21, so that the slider 20 does not move relative to the frame 10.
[0049] In one embodiment, the elastic member 30 is a tension spring, a connecting hole 22 is provided on the slider 20, one end of the elastic member 30 is connected to the connecting hole 22, and the other end of the elastic member 30 is connected to a component on the frame 10 (not shown in the drawings).
[0050] In one embodiment, in order to achieve the connection between the slider 20 and the brake cable 40 , a mounting notch 23 is provided on the slider 20 , and the brake cable 40 passes through the mounting notch 23 and is fastened to the slider 20 .
[0051] In one embodiment, the slider 20 is provided with a third limiting hole 24, a support seat 60 is welded and fixed on the frame 10, two limiting posts 61 are provided on the support seat 60, the limiting posts 61 pass through the third limiting hole 24, and the third limiting hole 24 extends along the sliding direction of the slider 20. The throttle auxiliary brake mechanism also includes a limiting block 70, which is detachably inserted on the limiting post 61, and the slider 20 is located between the supporting seat 60 and the limiting block 70. The supporting seat 60 is used to facilitate the installation of the slider 20 on the frame 10, and the two limiting posts 61 are used to cooperate with the third limiting hole 24, so that the slider 20 can only slide along a preset direction.
[0052] In one embodiment, a screw rod 62 is provided on the side of the limiting column 61 away from the support seat 60, and the outer diameter of the screw rod 62 is smaller than the outer diameter of the limiting column 61. The limiting block 70 is provided on the screw rod 62, and a locking nut 63 is threadedly matched on the screw rod 62, and the locking nut 63 abuts on the limiting block 70. The thickness of the slider 20 is smaller than the height of the limiting column 61, and the limiting block 70 is provided with through holes corresponding to the number of the screw rods 62, and the inner diameter of the through hole is smaller than the outer diameter of the limiting column 61. When the limiting block 70 is provided on two screw rods 62, the limiting block 70 will abut on the side of the limiting column 61 away from the support seat 60. Since the thickness of the slider 20 is smaller than the thickness of the limiting column 61, the limiting block 70 will not be close to the support seat 60 and the limiting block 70, while ensuring the limiting of the slider 20, the smoothness of the sliding of the slider 20 is also improved.
[0053] In one embodiment, the support base 60 is bent to form a connecting block 64 , and the support base 60 is welded and fixed to the frame 10 through the connecting block 64 .
[0054] Embodiment 2
[0055] In another embodiment of the utility model, a lawn mower is provided, comprising the throttle-assisted brake mechanism in the above-mentioned embodiment 1. By using the above-mentioned throttle-assisted brake mechanism, the safety of the entire vehicle during use is improved and potential safety hazards are eliminated.
[0056] In the specification of the present utility model, a lot of specific details are described. However, it is understood that the embodiments of the present utility model can be practiced without these specific details. In some examples, well-known methods, structures and techniques are not shown in detail so as not to obscure the understanding of this specification.
[0057] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents. These modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the utility model, and they should all be included in the scope of the claims and specification of the utility model.
Claims
1. A throttle-assisted brake mechanism, characterized in that: include: Frame (10); A slider (20) is slidably engaged with the frame (10), and a connecting portion is provided on the slider (20); An elastic member (30) is used to apply elastic force to the slider (20) so that the slider (20) has a tendency to move in one direction; A brake cable (40), one end of which is connected to the slider (20); as well as A pedal arm (50) is rotatably disposed on the frame (10), and a first limiting portion and a second limiting portion are provided on the pedal arm (50), and the first limiting portion and the second limiting portion can be matched with the connecting portion respectively; When the first limiting portion cooperates with the connecting portion and the pedal arm (50) rotates, the slider (20) moves on the frame (10); when the second limiting portion cooperates with the connecting portion and the pedal arm (50) rotates, the slider (20) and the frame (10) do not move relative to each other.
2. The throttle-assisted brake mechanism according to claim 1, characterized in that: The first limiting portion is a first limiting hole (51), the second limiting portion is a second limiting hole (52), and the second limiting hole (52) is connected to the first limiting hole (51); The connecting portion is a connecting column (21), and the connecting column (21) can be slidably fitted in the first limiting hole (51) and the second limiting hole (52) respectively.
3. The throttle-assisted brake mechanism according to claim 2, characterized in that: The first limiting hole (51) is a straight hole, the second limiting hole (52) is an arc-shaped hole, and the center of the second limiting hole (52) is located on the rotation axis (11) of the pedal arm (50).
4. The throttle-assisted brake mechanism according to claim 1, characterized in that: The sliding block (20) is provided with a connecting hole (22), and one end of the elastic member (30) is connected to the connecting hole (22).
5. The throttle-assisted brake mechanism according to claim 1, characterized in that: The slider (20) is provided with a mounting notch (23), and the brake cable (40) is fastened to the slider (20) after passing through the mounting notch (23).
6. The throttle-assisted brake mechanism according to claim 1, characterized in that: The slider (20) is provided with a third limiting hole (24), the frame (10) is provided with a support seat (60), the support seat (60) is provided with at least two limiting columns (61), and the limiting columns (61) pass through the third limiting hole (24); It also comprises a limiting block (70), wherein the limiting block (70) is detachably mounted on the limiting column (61), and the sliding block (20) is located between the supporting seat (60) and the limiting block (70).
7. The throttle-assisted brake mechanism according to claim 6, characterized in that: A screw rod (62) is provided on the side of the limiting column (61) facing away from the supporting seat (60), and the outer diameter of the screw rod (62) is smaller than the outer diameter of the limiting column (61); The limit block (70) is inserted into the screw rod (62), a locking nut (63) is threadedly matched on the screw rod (62), and the locking nut (63) abuts against the limit block (70).
8. The throttle-assisted brake mechanism according to claim 7, characterized in that: The thickness of the sliding block (20) is smaller than the height of the limiting column (61); the limiting block (70) is provided with through holes corresponding to the number of the screw rods (62), and the inner diameter of the through hole is smaller than the outer diameter of the limiting column (61).
9. The throttle-assisted brake mechanism according to claim 6, characterized in that: The support seat (60) is bent to form a connecting block (64).
10. A lawn mower, characterized in that: It comprises the throttle-assisted braking mechanism described in any one of claims 1 to 9.