Anti-eccentric-wear plunger type clutch master cylinder

Abstract

The utility model discloses an anti-eccentric-wear plunger type clutch master cylinder, and relates to the technical field of clutch master cylinders. The oil pump comprises a pump body, an oil inlet pipe is fixedly connected to the top of the pump body, an oil outlet pipe is fixedly connected to the left side of the pump body, a plunger is slidably connected to the inner wall of the pump body, a plurality of fixing rods are fixedly connected to the left side of the inner wall of the pump body, the fixing rods are arranged in a circumferential array mode, and parts contained in the fixing rods are the same. An anti-eccentric-wear assembly is arranged in the plunger. By arranging the anti-eccentric-wear assembly, specifically when a clutch pedal is not treaded, the annular groove corresponds to the oil inlet pipe, hydraulic oil entering the oil inlet pipe firstly flows into the annular groove and then flows to the oil outlet hole through the connecting hole, and after the hydraulic oil enters the annular groove, the situation that the pressure at the single-point position of the plunger is too large, and the clutch pedal is damaged can be avoided. Therefore, eccentric wear is prevented, friction is reduced, and the service life of the plunger is prolonged.

Description

Technical Field

[0001] The utility model belongs to the technical field of clutch master cylinders, and particularly relates to an anti-offset wear plunger-type clutch master cylinder. Background Technique

[0002] The plunger-type clutch master cylinder is an element in the hydraulic control mechanism of an automotive friction clutch. It is connected to the clutch pedal in the driver's cab. During operation, the plunger-type clutch master cylinder converts the thrust applied by the driver into hydraulic pressure, and then converts the hydraulic pressure back into thrust. These two components, the connecting oil pipe between them, and the brake fluid achieve the transmission of force.

[0003] When the existing plunger-type clutch master cylinder is in use, oil is usually transported into the pump body through the oil inlet. Since the oil inlet is in direct contact with one side of the plunger, the plunger will be unevenly stressed during the oil inlet process, with excessive single-point stress. As a result, the plunger will experience offset wear during movement. Long-term offset wear will cause significant single-point wear of the plunger and is prone to damage, thus affecting driving safety. Therefore, we propose an anti-offset wear plunger-type clutch master cylinder. Summary of the Utility Model

[0004] The purpose of the utility model is to provide an anti-offset wear plunger-type clutch master cylinder. By setting an anti-offset wear component, specifically, when the clutch pedal is not depressed, the annular groove corresponds to the inlet oil pipe. The hydraulic oil entering the inlet oil pipe will first flow into the annular groove and then through the connecting hole to the outlet hole. After the hydraulic oil enters the annular groove, it can avoid excessive pressure at a single point of the plunger, make the pressure on the plunger more uniform, thereby preventing offset wear, reducing friction, and increasing the service life of the plunger. It solves the problem that the plunger is unevenly stressed during the oil inlet process, with excessive single-point stress, resulting in offset wear of the plunger during movement.

[0005] To solve the above technical problems, the utility model is realized through the following technical solutions:

[0006] The utility model is an anti-offset wear plunger-type clutch master cylinder, including a pump body. The top of the pump body is fixedly connected with an inlet oil pipe, the left side of the pump body is fixedly connected with an outlet oil pipe, a plunger is slidably connected to the inner wall of the pump body, and several fixing rods are fixedly connected to the left side inner wall of the pump body. The several fixing rods are arranged in a circumferential array, and the parts included in the several fixing rods are the same;

[0007] An anti-abrasion component is arranged inside the plunger. The anti-abrasion component includes oil outlet holes. The number of the oil outlet holes is several. Several oil outlet holes are all opened inside the plunger. The several oil outlet holes are arranged in a circumferential array. Connecting holes are opened on the inner walls of the several oil outlet holes. An annular groove is opened on the outer surface of the plunger. By arranging the anti-abrasion component, specifically when the clutch pedal is not stepped on, the annular groove corresponds to the inlet pipe. The hydraulic oil entering the inlet pipe will first flow into the annular groove and then flow into the oil outlet holes through the connecting holes. After the hydraulic oil enters the annular groove, it can prevent the pressure at a single point of the plunger from being too large, make the pressure on the plunger more uniform, thereby preventing the occurrence of eccentric wear, reducing friction and improving the service life of the plunger.

[0008] Further, a plunger rod is sleeved on the right side of the plunger. A fixed disk is fixedly connected to the left side of the plunger. A first spring is fixedly connected to the left side of the fixed disk. The left side of the first spring is fixedly connected to the left inner wall of the pump body.

[0009] Further, two sealing rings are sleeved on the outer surface of the plunger. The two sealing rings are arranged in a horizontal array. The outer surfaces of the two sealing rings are in contact with the inner wall of the pump body. A plurality of oil outlet grooves are opened inside the fixed disk. The plurality of oil outlet grooves are arranged in a circumferential array.

[0010] Further, a limiting groove is opened inside the fixed rod. A telescopic rod is slidably connected to the inner wall of the limiting groove. A second spring is fixedly connected to the left side of the telescopic rod. The left side of the second spring is fixedly connected to the left inner wall of the limiting groove.

[0011] Further, a connecting ring is fixedly connected to the right side of the telescopic rod. A plurality of sealing sleeves are fixedly connected to the right side of the connecting ring. The plurality of sealing sleeves are arranged in a circumferential array. The sealing sleeves correspond to the oil outlet holes. By arranging the connecting ring, specifically when the plunger moves to the left, it will contact the sealing sleeves on the connecting ring, thereby sealing the oil outlet holes and stopping the overflow of hydraulic oil. At this time, the oil pressure inside the plunger is more uniform, and at the same time, the plunger can be limited by the connecting ring to prevent the occurrence of eccentric wear again.

[0012] Further, the annular groove corresponds to the inlet pipe. The annular groove communicates with the oil outlet holes through the connecting holes. There is a gap between the right side of the connecting ring and the left side of the plunger. The outer surface of the connecting ring is in contact with the inner wall of the pump body. The right side of the telescopic rod penetrates through the fixed rod and extends to the outside.

[0013] The utility model has the following beneficial effects:

[0014] 1. The utility model prevents eccentric wear by setting an anti-eccentric wear component. Specifically, when the clutch pedal is not stepped on, the annular groove corresponds to the oil inlet pipe. The hydraulic oil entering the oil inlet pipe will first flow into the annular groove and then flow to the oil outlet hole through the connecting hole. After the hydraulic oil enters the annular groove, it can avoid excessive pressure at a single point of the plunger, make the pressure on the plunger more uniform, thereby preventing eccentric wear and reducing friction to improve the service life of the plunger.

[0015] 2. The utility model prevents eccentric wear by setting a connecting ring. Specifically, when the plunger moves to the left, it will contact the sealing sleeve on the connecting ring, thereby sealing the oil outlet hole and stopping the overflow of hydraulic oil. At this time, the oil pressure inside the plunger is more uniform, and at the same time, the plunger can be limited by the connecting ring to prevent eccentric wear again.

[0016] Of course, it is not necessary for any product implementing the utility model to achieve all the above-mentioned advantages simultaneously. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the utility model. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0019] Figure 2 It is a schematic diagram of the internal sectional structure of the pump body of the utility model;

[0020] Figure 3 For the utility model Figure 2 The enlarged schematic diagram of A therein;

[0021] Figure 4 It is a schematic diagram of the overall structure of the plunger of the utility model;

[0022] Figure 5 It is a schematic diagram of the right side structure of the connecting ring of the utility model.

[0023] In the drawings, the list of components represented by each reference numeral is as follows:

[0024] 1. Pump body; 11. Oil inlet pipe; 12. Oil outlet pipe; 13. Plunger; 131. Plunger rod; 132. Fixed disk; 133. Spring 1; 134. Sealing ring; 135. Oil outlet groove; 14. Fixed rod; 141. Telescopic rod; 142. Spring 2; 143. Connecting ring; 144. Sealing sleeve; 15. Anti-eccentric wear component; 151. Oil outlet hole; 152. Connecting hole; 153. Annular groove. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0025] The technical solutions in the embodiments of the present utility model will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present utility model. Apparently, the described embodiments are only a part rather than all of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without making creative efforts shall fall within the protection scope of the present utility model.

[0026] Please refer to Figures 1-5As shown in the figure, the utility model is an anti-abrasion eccentric plunger type clutch master cylinder, which includes a pump body 1. An oil inlet pipe 11 is fixedly connected to the top of the pump body 1, and an oil outlet pipe 12 is fixedly connected to the left side of the pump body 1. A plunger 13 is slidably connected to the inner wall of the pump body 1. A plurality of fixing rods 14 are fixedly connected to the left inner wall of the pump body 1. The plurality of fixing rods 14 are arranged in a circumferential array. The parts included in the plurality of fixing rods 14 are the same. An anti-abrasion component 15 is arranged inside the plunger 13. The anti-abrasion component 15 includes oil outlet holes 151. The number of the oil outlet holes 151 is several. The several oil outlet holes 151 are all opened inside the plunger 13. The several oil outlet holes 151 are arranged in a circumferential array. Connecting holes 152 are opened on the inner walls of the several oil outlet holes 151. An annular groove 153 is opened on the outer surface of the plunger 13. By setting the anti-abrasion component 15, specifically when the clutch pedal is not stepped on, the annular groove 153 corresponds to the oil inlet pipe 11. The hydraulic oil entering the oil inlet pipe 11 will first flow into the annular groove 153, and then flow into the oil outlet holes 151 through the connecting holes 152. After the hydraulic oil enters the annular groove 153, it can avoid excessive pressure at a single point of the plunger 13, make the pressure on the plunger 13 more uniform, thereby preventing the occurrence of eccentric wear, reducing friction and increasing the service life of the plunger 13. A plunger rod 131 is sleeved on the right side of the plunger 13. A fixed disk 132 is fixedly connected to the left side of the plunger 13. A first spring 133 is fixedly connected to the left side of the fixed disk 132. The left side of the first spring 133 is fixedly connected to the left inner wall of the pump body 1. When the plunger 13 moves to the left, the first spring 133 will be compressed through the fixed disk 132, so as to facilitate the subsequent reset of the plunger 13 under the action of elasticity. Two sealing rings 134 are sleeved on the outer surface of the plunger 13. The two sealing rings 134 are arranged in a horizontal array. The outer surfaces of the two sealing rings 134 are in contact with the inner wall of the pump body 1. A plurality of oil outlet grooves 135 are opened inside the fixed disk 132. The plurality of oil outlet grooves 135 are arranged in a circumferential array. Since there is a gap between the connecting ring 143 and the plunger 13, then it is discharged to the left through the oil outlet holes 151, and the hydraulic oil is then discharged through the oil outlet grooves 135 and flows to the left side of the fixed disk 132. A limiting groove is opened inside the fixing rod 14. A telescopic rod 141 is slidably connected to the inner wall of the limiting groove. A second spring 142 is fixedly connected to the left side of the telescopic rod 141. The left side of the second spring 142 is fixedly connected to the left inner wall of the limiting groove. The telescopic rod 141 slides inside the fixing rod 14, which can play a limiting role on the connecting ring 143 and make the connecting ring 143 move in a straight line. A connecting ring 143 is fixedly connected to the right side of the telescopic rod 141. A plurality of sealing sleeves 144 are fixedly connected to the right side of the connecting ring 143. The plurality of sealing sleeves 144 are arranged in a circumferential array. The sealing sleeves 144 correspond to the oil outlet holes 151. By setting the connecting ring 143, specifically when the plunger 13 moves to the left, it will contact the sealing sleeves 144 on the connecting ring 143, thereby sealing the oil outlet holes 151 and stopping the overflow of the hydraulic oil. At this time, the oil pressure inside the plunger 13 is more uniform, and at the same time, the plunger 13 can be limited by the connecting ring 143 to prevent the occurrence of eccentric wear again.The annular groove 153 corresponds to the oil inlet pipe 11. The annular groove 153 is in through communication with the oil outlet hole 151 through the connection hole 152. There is a gap between the right side of the connecting ring 143 and the left side of the plunger 13. The outer surface of the connecting ring 143 contacts the inner wall of the pump body 1. The right side of the telescopic rod 141 penetrates through the fixed rod 14 and extends to the outside. When the plunger 13 moves to the left, it will contact the sealing sleeve 144 on the connecting ring 143, thereby sealing the oil outlet hole 151 and stopping the hydraulic oil from overflowing.,

[0027] A specific application of this embodiment is as follows:

[0028] During use, connect the oil inlet pipe 11 to the oil delivery pipe and the oil outlet pipe 12 to the conveying pipe. Then, the hydraulic oil will enter the inside of the pump body 1 through the oil inlet pipe 11. When the clutch pedal is not depressed, the annular groove 153 corresponds to the oil inlet pipe 11. The hydraulic oil entering from the oil inlet pipe 11 will first flow into the annular groove 153 and then flow to the oil outlet hole 151 through the connection hole 152. After the hydraulic oil enters the annular groove 153, it can prevent excessive pressure at a single point of the plunger 13, make the pressure on the plunger 13 more uniform, thereby preventing eccentric wear, reducing friction and increasing the service life of the plunger 13. Since there is a gap between the connecting ring 143 and the plunger 13, it then discharges to the left through the oil outlet hole 151. The hydraulic oil then discharges through the oil outlet groove 135, flows to the fixed disk 132, and then flows out through the oil outlet pipe 12. When the clutch pedal is depressed, it will drive the plunger 13 to move to the left through the plunger rod 131. The sealing ring 134 on the right side will not move to the position of the oil inlet pipe 11. The sealing ring 134 is always on the right side of the oil inlet pipe 11 for sealing to prevent the hydraulic oil from leaking. When the plunger 13 moves to the left, it will contact the sealing sleeve 144 on the connecting ring 143, thereby sealing the oil outlet hole 151 and stopping the hydraulic oil from overflowing. At the same time, through the continuous movement of the plunger 13, the connecting ring 143 can be squeezed to the left. The connecting ring 143 drives the telescopic rod 141 to slide in the fixed rod 14 and squeezes the second spring 142 at the same time. The plunger 13 drives the fixed disk 132 to squeeze the first spring 133, so that the hydraulic oil on the left side of the fixed disk 132 is squeezed out of the oil outlet pipe 12. At the same time, when the plunger 13 drives the connecting ring 143 to move, it can be limited by the connecting ring 143, so that the plunger 13 can be prevented from eccentric wear again. At the same time, after the depression is completed, it can assist the plunger 13 to reset to the right under the elastic action of the second spring 142, and the first spring 133 drives the plunger 13 to reset to the right.,

[0029] In the description of this specification, the descriptions referring to terms such as "one embodiment", "example", "specific example", etc. mean that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of this utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0030] The preferred embodiments of the utility model disclosed above are only used to help illustrate the utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the utility model to the specific embodiments described. Obviously, according to the content of this specification, many modifications and changes can be made. This specification selects and specifically describes these embodiments in order to better explain the principle and practical application of the utility model, so that those skilled in the art can well understand and utilize the utility model. The utility model is only limited by the claims and their full scope and equivalents.

Claims

1. A plunger type clutch master cylinder for preventing eccentric wear, comprising a pump body (1), a fuel inlet pipe (11) is fixedly connected to the top of the pump body (1), an oil outlet pipe (12) is fixedly connected to the left side of the pump body (1), a plunger (13) is slidably connected to the inner wall of the pump body (1), and it is characterized in that: On the left side of the inner wall of the pump body (1), a number of fixing rods (14) are fixedly connected. The number of the fixing rods (14) is arranged in a circumferential array, and the parts included in the number of the fixing rods (14) are the same; An anti-abrasion component (15) is arranged inside the plunger (13). The anti-abrasion component (15) includes oil outlet holes (151). The number of the oil outlet holes (151) is several. The number of the oil outlet holes (151) are all opened inside the plunger (13). The number of the oil outlet holes (151) is arranged in a circumferential array. Connecting holes (152) are opened on the inner walls of the number of the oil outlet holes (151). An annular groove (153) is opened on the outer surface of the plunger (13).

2. The master cylinder of a plunger type clutch for preventing eccentric wear according to claim 1, characterized in that, A plunger rod (131) is sleeved on the right side of the plunger (13). A fixing disk (132) is fixedly connected to the left side of the plunger (13). A first spring (133) is fixedly connected to the left side of the fixing disk (132). The left side of the first spring (133) is fixedly connected to the left side of the inner wall of the pump body (1).

3. The master cylinder of the anti-wear plunger clutch according to claim 2, characterized in that, Two sealing rings (134) are sleeved on the outer surface of the plunger (13). The two sealing rings (134) are arranged in a horizontal array. The outer surfaces of the two sealing rings (134) are in contact with the inner wall of the pump body (1). A number of oil outlet grooves (135) are opened inside the fixing disk (132). The number of the oil outlet grooves (135) is arranged in a circumferential array.

4. The master cylinder of the anti-wear plunger clutch according to claim 3, characterized in that, A limiting groove is opened inside the fixing rod (14). A telescopic rod (141) is slidably connected to the inner wall of the limiting groove. A second spring (142) is fixedly connected to the left side of the telescopic rod (141). The left side of the second spring (142) is fixedly connected to the left side of the inner wall of the limiting groove.

5. The master cylinder of a plunger type clutch for preventing eccentric wear according to claim 4, characterized in that, A connecting ring (143) is fixedly connected to the right side of the telescopic rod (141). A number of sealing sleeves (144) are fixedly connected to the right side of the connecting ring (143). The number of the sealing sleeves (144) is arranged in a circumferential array. The sealing sleeves (144) correspond to the oil outlet holes (151).

6. The master cylinder of the anti-abrasion plunger clutch according to claim 5, characterized in that, The annular groove (153) corresponds to the inlet pipe (11). The annular groove (153) is communicated with the oil outlet holes (151) through the connecting holes (152). There is a gap between the right side of the connecting ring (143) and the left side of the plunger (13).

7. The master cylinder of a plunger clutch for preventing eccentric wear according to claim 5, characterized in that, The outer surface of the connecting ring (143) is in contact with the inner wall of the pump body (1). The right side of the telescopic rod (141) penetrates through the fixing rod (14) and extends to the outside.

Images