Steering hand brake device for differential reduction gearbox

Abstract

The utility model discloses a steering hand brake device for a differential reduction gearbox, and belongs to the field of automobile braking. A steering hand brake device for a differential speed reduction box comprises a base and two tooth nest control rocker arms installed on the differential speed reduction box. The steering oil cylinder is fixedly connected to the base; the rotating shaft is rotationally connected to the base; the two linkage arms are rotationally connected to the rotating shaft in a position symmetry mode. The hand brake pull rod is rotationally connected to the rotating shaft; the fixed seat is fixedly connected to the base; one end of the hand brake pull wire is hinged to the hand brake pull rod, and the other end penetrates through the fixed seat; the two pull rods are respectively mounted on the hand brake pull rod; one end of the pull rod is hinged with the tooth nesting control rocker arm, and the other end of the pull rod is hinged with the linkage arm. The steering hand brake device for the differential reduction gearbox has the beneficial effects that the steering hand brake device for the differential reduction gearbox is provided, the structure is simple, and the hand brake control mechanism and the steering control mechanism do not influence each other to act.

Description

Technical Field

[0001] The present application relates to the field of automobile braking, and in particular to a steering handbrake device for a differential reduction box. Background Art

[0002] The car handbrake is an auxiliary braking system of the vehicle braking system, which is mainly used to prevent the vehicle from rolling away when parking. Its principle is to connect the parking wire to the rear brake shoe to brake the rear wheel of the car. In the prior art, the rotating part of the car handbrake is directly mounted on the rotating shaft, which causes friction with the rotating shaft. Long-term use will cause some parts of the car handbrake to be scrapped, which is not durable and can easily cause traffic accidents. On the other hand, the traditional handbrake lever and foot brake pedal are separate braking systems. When the car uses the handbrake during operation, the handbrake control mechanism and the steering control mechanism may have motion interference, which may cause accidents.

[0003] A steering handbrake device for a differential reduction box is now provided. Utility Model Content

[0004] The content of this application is used to introduce concepts in a brief form, which will be described in detail in the detailed implementation section below. The content of this application is not intended to identify the key features or essential features of the technical solution claimed for protection, nor is it intended to limit the scope of the technical solution claimed for protection.

[0005] In order to solve the technical problems mentioned in the above background technology section, some embodiments of the present application provide a steering handbrake device for a differential reduction box, comprising: a base and two tooth-nested control rocker arms installed on the differential reduction box;

[0006] Features:

[0007] A steering hand brake device for a differential reduction box also includes:

[0008] A steering cylinder is fixedly connected to the base and has two output piston rods;

[0009] A rotary shaft, fixedly connected to the base;

[0010] The linkage arm is provided with two symmetrically rotatably connected to the rotary shaft;

[0011] Wherein, the two output piston rods are respectively pressed and contacted with the two linkage arms;

[0012] A handbrake lever is rotatably connected to the rotary shaft;

[0013] A fixed seat, fixedly connected to the base;

[0014] A handbrake cable, one end of which is hinged to the handbrake lever and the other end of which passes through a fixing seat;

[0015] Pull rods, two of which are respectively mounted on the handbrake pull rods;

[0016] One end of the pull rod is hinged to the tooth nesting control rocker arm, and the other end of the pull rod is hinged to the linkage arm.

[0017] Further, the linkage arm comprises:

[0018] A first rotating sleeve is sleeved on one end of the rotating shaft;

[0019] A control pulling arm is fixedly connected to the outer wall of the first rotary sleeve;

[0020] The cylinder hand brake linkage arm is fixedly connected to the outer wall of the first rotary sleeve;

[0021] A connecting hole is provided on one end of the control arm;

[0022] Among them, the cylinder handbrake linkage arm includes:

[0023] A contact cam is provided on one end of the cylinder hand brake linkage arm;

[0024] The linkage contact surface is arranged on the other end of the cylinder hand brake linkage arm.

[0025] Further, the handbrake lever comprises:

[0026] The second rotary sleeve is sleeved on the rotary shaft;

[0027] A handbrake linkage arm is fixedly connected to the outer wall of the second rotary sleeve;

[0028] A pin hole is provided on one end of the handbrake linkage arm;

[0029] A cable hole is provided on one end of the handbrake linkage arm;

[0030] The linkage pin is inserted into the pin hole.

[0031] Furthermore, a linkage arm connecting pin and a tooth-embedded control rocker arm connecting pin are formed at both ends of the pull rod respectively, and the bending angles of the linkage arm connecting pin and the tooth-embedded control rocker arm connecting pin are different.

[0032] Further, the linkage contact surface is in pressing contact with one end of the linkage pin.

[0033] Furthermore, the two output piston rods are respectively in press contact with the two contact cams.

[0034] Furthermore, the linkage arm connecting pin is inserted into the connecting hole and is hinged to the control pulling arm.

[0035] Furthermore, a hinge hole is provided on one end of the tooth-embedded control rocker arm, and a connecting pin shaft of the tooth-embedded control rocker arm is inserted into the hinge hole so that the connecting pin shaft of the tooth-embedded control rocker arm is hingedly connected to the tooth-embedded control rocker arm.

[0036] Furthermore, one end of the handbrake cable passes through the cable hole and is hinged to the handbrake linkage arm, and the other end of the handbrake cable passes through the fixing seat and the handbrake cable moves relative to the fixing seat.

[0037] The beneficial effect of the present application is that it provides a steering handbrake device for a differential reduction box, which has a simple structure and the handbrake control mechanism and the steering control mechanism do not affect each other's actions. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] The drawings constituting a part of this application are used to provide a further understanding of this application, so that other features, purposes and advantages of this application become more obvious. The illustrative embodiment drawings and their descriptions of this application are used to explain this application and do not constitute an improper limitation on this application.

[0039] In addition, throughout the drawings, the same or similar reference numerals represent the same or similar elements. It should be understood that the drawings are schematic and that the components and elements are not necessarily drawn to scale.

[0040] In the attached picture:

[0041] Figure 1 is an overall schematic diagram according to an embodiment of the present application;

[0042] Figure 2 It is a structural schematic diagram of a part of the embodiment, mainly showing the steering cylinder structure;

[0043] Figure 3 It is a structural schematic diagram of a part of the embodiment, mainly showing the tooth nesting control rocker arm structure;

[0044] Figure 4 It is a structural schematic diagram of a part of the embodiment, mainly showing the handbrake pull rod structure;

[0045] Figure 5 It is a structural schematic diagram of a part of the embodiment, mainly showing the linkage arm structure;

[0046] Figure 6 It is a structural schematic diagram of a part of the embodiment, mainly showing the pull rod structure.

[0047] Reference numerals:

[0048] 11. Base; 12. Fixed seat; 13. Steering cylinder; 14. Linkage arm; 15. Rotating shaft; 16. Handbrake pull rod; 17. Handbrake cable; 18. Pull rod; 19. Threaded control rocker arm; 141. First rotary sleeve; 142. Cylinder handbrake linkage arm; 143. Control pull arm; 144. Connecting hole; 145. Contact cam; 146. Linkage contact surface; 161. Second rotary sleeve; 162. Handbrake linkage arm; 163. Cable hole; 164. Pin hole; 165. Linkage pin; 181. Linkage arm connecting pin; 182. Threaded control rocker arm connecting pin. DETAILED DESCRIPTION

[0049] Embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although certain embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be construed as being limited to the embodiments set forth herein. On the contrary, these embodiments are provided to provide a more thorough and complete understanding of the present disclosure. It should be understood that the drawings and embodiments of the present disclosure are only for exemplary purposes and are not intended to limit the scope of protection of the present disclosure.

[0050] It should also be noted that, for ease of description, only the parts related to the invention are shown in the drawings. In the absence of conflict, the embodiments and features in the embodiments of the present disclosure can be combined with each other.

[0051] It should be noted that the concepts such as "first" and "second" mentioned in the present disclosure are only used to distinguish different devices, modules or units, and are not used to limit the order or interdependence of the functions performed by these devices, modules or units.

[0052] It should be noted that the modifications of "one" and "plurality" mentioned in the present disclosure are illustrative rather than restrictive, and those skilled in the art should understand that unless otherwise clearly indicated in the context, it should be understood as "one or more".

[0053] The present disclosure will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments.

[0054] Reference Figure 1-Figure 6 A steering handbrake device for a differential reduction box includes: a base 11, a tooth nesting control rocker arm 19, a steering cylinder 13, a rotary shaft 15, a linkage arm 14, a handbrake pull rod 16, a fixing seat 12, a handbrake pull cable 17, and a pull rod 18.

[0055] The base 11 is fixedly connected to the differential reduction box, and the two thread-nested control rocker arms 19 are respectively a left thread-nested control rocker arm and a right thread-nested control rocker arm. The left thread-nested control rocker arm and the right thread-nested control rocker arm are respectively rotatably installed on the differential reduction box. Both the left thread-nested control rocker arm and the right thread-nested control rocker arm are installed with torsion springs to facilitate the resetting of the control rocker arms.

[0056] The steering cylinder 13 is fixedly connected to the base 11 . Two output piston rods 131 for separate use are arranged in the steering cylinder 13 . The two output piston rods 131 are pressed and contacted with the two contact cams 145 respectively.

[0057] The base 11 is provided with two symmetrically positioned rotating holes. Two ends of the rotating shaft 15 are respectively inserted into the rotating holes on both sides and rotate relative to the base 11 . The fixing base 12 is fixedly connected to the base 11 .

[0058] The linkage arm 14 is provided with two symmetrically rotatably connected to the rotary shaft 15 , and the linkage arm 14 comprises: a first rotary sleeve 141 , a control pulling arm 143 , a cylinder hand brake linkage arm 142 , a connecting hole 144 , a contact cam 145 , and a linkage contact surface 146 .

[0059] The first rotary sleeve 141 is sleeved on one end of the rotary shaft 15 and the first rotary sleeve 141 is in rotational contact with respect to the rotary shaft 15, the control arm 143 is fixedly connected to the outer wall of the first rotary sleeve 141, and the oil cylinder hand brake linkage arm 142 is fixedly connected to the outer wall of the first rotary sleeve 141. A connecting hole 144 is provided on one end of the control arm 143, a contact cam 145 is provided on one end of the oil cylinder hand brake linkage arm 142, and a linkage contact surface 146 is provided on the other end of the oil cylinder hand brake linkage arm 142.

[0060] The handbrake pull rod 16 includes a second rotating sleeve 161 , a handbrake linkage arm 162 , and a linkage pin 165 .

[0061] The second rotating sleeve 161 is sleeved on the rotating shaft 15 and the second rotating sleeve 161 is in rotational contact with the rotating shaft 15, and the handbrake linkage arm 162 is fixedly connected to the outer wall of the second rotating sleeve 161. A pin hole 164 is provided on one end of the handbrake linkage arm 162, and a wire hole 163 is provided on one end of the handbrake linkage arm 162. A linkage pin 165 is inserted into the pin hole 164, and the linkage contact surface 146 is pressed and contacted with one end of the linkage pin 165.

[0062] One end of the handbrake cable 17 passes through the cable hole 163 and is hinged to the handbrake linkage arm 162 , and the other end of the handbrake cable 17 passes through the fixing seat 12 and the handbrake cable 17 is in sliding contact with the fixing seat 12 .

[0063] Two pull rods 18 are provided and are respectively installed on the handbrake pull rod 16. The two ends of the pull rod 18 are bent at different angles and are respectively: a linkage arm connection pin 181 and a toothed control rocker arm connection pin 182. The linkage arm connection pin 181 is inserted into the connection hole 144 and is hinged with the control pull arm 143. A hinge hole is provided on one end of the toothed control rocker arm 19, and the toothed control rocker arm connection pin 182 is inserted into the hinge hole so that the toothed control rocker arm connection pin 182 is hinged with the toothed control rocker arm 19.

[0064] Differential clutch control process:

[0065] The tooth-type differential gearbox controls the clutch and brake of the left and right outputs by controlling two tooth-nested control rocker arms 19 to realize the function of differential speed of the left and right output shafts. When one of the output piston rods 131 of the steering cylinder 13 is pushed out, the output piston rod 131 pushes the contact cam 145 that is pressed against it. Since the first rotary sleeve 141 is in rotational contact with the rotary shaft 15, the contact cam 145 is pushed by the output piston rod 131, so that the cylinder handbrake linkage arm 142 drives the first rotary sleeve 141 to rotate around the rotary shaft 15, and the first rotary sleeve 141 drives the control arm 143 to rotate synchronously. The control arm 143 rotates and pulls the linkage arm connecting pin 181 through the connecting hole 144 to move, thereby driving the pull rod 18 to move, and the tooth-nested control rocker arm connecting pin 182 at the other end of the pull rod 18 follows the movement, thereby driving the tooth-nested control rocker arm 19 on the tooth-type differential gearbox to realize differential action. Since the torsion spring is installed on the tooth nesting control rocker arm 19, the tooth nesting control rocker arm 19 can achieve a reset action under the action of the torsion spring when the action ends. Since the linkage contact surface 146 only contacts and cooperates with the linkage pin 165, it will not be driven and will not interfere with each other's actions.

[0066] During handbrake control:

[0067] When parking on a slope, pull the handbrake cable 17, the handbrake cable 17 pulls the cable hole 163, thereby driving the handbrake linkage arm 162 to move, the handbrake linkage arm 162 drives the second rotating sleeve 161 to rotate around the rotating shaft 15, the handbrake linkage arm 162 drives the linkage pin 165 to rotate around the rotating shaft 15, and the linkage pin 165 drives the two cylinder handbrake linkage arms 142 to rotate around the rotating shaft 15 at the same time by pressing and contacting with the linkage contact surface 146. As the cylinder handbrake linkage arm 142 rotates and pulls the pull rod 18 through the control arm 143, it synchronously drives the left and right tooth nested control rocker arms on the tooth-embedded differential gearbox, realizes the tooth disengagement of the reducer and the action of the brake pads, thereby realizing the handbrake action.

[0068] The above descriptions are only some preferred embodiments of the present disclosure and an explanation of the technical principles used. Those skilled in the art should understand that the scope of the invention involved in the embodiments of the present disclosure is not limited to the technical solutions formed by a specific combination of the above-mentioned technical features, but should also cover other technical solutions formed by any combination of the above-mentioned technical features or their equivalent features without departing from the above-mentioned inventive concept. For example, the above-mentioned features are replaced with the technical features with similar functions disclosed in the embodiments of the present disclosure (but not limited to) and the technical solutions formed.

Claims

1. A steering handbrake device for a differential reduction box, comprising: A base (11) and two tooth-nested control rocker arms (19) mounted on a differential reduction box; Features: The steering hand brake device for the differential reduction box also includes: A steering cylinder (13) is fixedly connected to the base (11) and has two output piston rods (131); A rotary shaft (15) fixedly connected to the base (11); The linkage arm (14) is provided with two symmetrically rotatably connected to the rotary shaft (15); Wherein, the two output piston rods (131) are respectively in press contact with the two linkage arms (14); A handbrake pull rod (16) rotatably connected to the rotary shaft (15); A fixed seat (12) fixedly connected to the base (11); A handbrake cable (17), one end of which is hinged to the handbrake rod (16) and the other end of which passes through the fixing seat (12); Two pull rods (18) are provided and are respectively mounted on the handbrake pull rod (16); One end of the pull rod (18) is hingedly connected to the tooth nesting control rocker arm (19), and the other end of the pull rod (18) is hingedly connected to the linkage arm (14).

2. A steering hand brake device for a differential reduction box according to claim 1, characterized in that: The linkage arm (14) comprises: A first rotating sleeve (141) sleeved on one end of the rotating shaft (15); A control pulling arm (143) fixedly connected to the outer wall of the first rotating sleeve (141); A cylinder handbrake linkage arm (142) is fixedly connected to the outer wall of the first rotary sleeve (141); A connecting hole (144) is provided on one end of the control arm (143); Wherein, the oil cylinder hand brake linkage arm (142) comprises: A contact cam (145) is provided on one end of the oil cylinder hand brake linkage arm (142); The linkage contact surface (146) is arranged on the other end of the oil cylinder hand brake linkage arm (142).

3. A steering hand brake device for a differential reduction box according to claim 2, characterized in that: The handbrake pull rod (16) comprises: A second rotating sleeve (161) sleeved on the rotating shaft (15); A handbrake linkage arm (162) is fixedly connected to the outer wall of the second rotating sleeve (161); A pin hole (164) is provided on one end of the handbrake linkage arm (162); A wire pulling hole (163) is provided on one end of the hand brake linkage arm (162); The linkage pin (165) is inserted into the pin hole (164).

4. A steering hand brake device for a differential reduction box according to claim 3, characterized in that: A linkage arm connecting pin (181) and a tooth-embedded control rocker arm connecting pin (182) are respectively formed at two ends of the pull rod (18), and the bending angles of the linkage arm connecting pin (181) and the tooth-embedded control rocker arm connecting pin (182) are different.

5. A steering hand brake device for a differential reduction box according to claim 3, characterized in that: The linkage contact surface (146) is in pressing contact with one end of the linkage pin (165).

6. A steering hand brake device for a differential reduction box according to claim 2, characterized in that: The two output piston rods (131) are respectively in press contact with the two contact cams (145).

7. A steering hand brake device for a differential reduction box according to claim 4, characterized in that: The linkage arm connecting pin (181) is inserted into the connecting hole (144) and is hinged to the control pulling arm (143).

8. A steering hand brake device for a differential reduction box according to claim 7, characterized in that: A hinge hole is provided on one end of the tooth-embedded control rocker arm (19), and the tooth-embedded control rocker arm connecting pin shaft (182) is inserted into the hinge hole so that the tooth-embedded control rocker arm connecting pin shaft (182) is hinge-connected to the tooth-embedded control rocker arm (19).

9. A steering hand brake device for a differential reduction box according to claim 3, characterized in that: One end of the handbrake cable (17) passes through the cable hole (163) and is hingedly connected to the handbrake linkage arm (162), and the other end of the handbrake cable (17) passes through the fixing seat (12) and the handbrake cable (17) moves relative to the fixing seat (12).

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