Electronic parking lower pump assembly

Abstract

The utility model discloses an electronic parking lower pump assembly which comprises a pump body, a mounting seat and calipers, a connecting rod is detachably connected inside the pump body, one end of the connecting rod is fixedly connected with a bolt head, the other end of the connecting rod is fixedly connected with an inserting rod, and a screw rod is sleeved outside the inserting rod. According to the electronic parking lower pump assembly, the push rod on the bolt head is pressed, the first positioning rod is separated from the positioning hole, then the screw rod can be taken down, a new screw rod is taken out to be arranged on the insertion rod in a sleeving mode, and after the push rod is loosened, the first positioning rod can be combined with the positioning hole in the new screw rod, so that replacement of the screw rod is completed, the whole bolt does not need to be discarded, and the cost is reduced. When the screw hole slips, the second positioning rod is pulled, then the mounting block can be taken out from the mounting hole in the mounting seat, and after a new mounting block is mounted in the mounting hole, the tension of the second spring can drive the second positioning rod to be combined with the positioning groove in the new mounting block, so that the operation is more convenient and quicker.

Description

Technical Field

[0001] This utility model relates to the field of lower pump assembly technology, and more specifically, to an electronic parking brake lower pump assembly. Background Technology

[0002] The electronic parking brake lower pump assembly is a core component of the electronic parking brake (EPB) system, primarily used to enable the vehicle's parking brake function. It is typically installed on the rear wheel braking system, replacing the traditional handbrake or foot brake pump through electronic control.

[0003] In most electronic parking brake pump assemblies, the pump body and mounting base are connected by bolts and threaded holes. The threaded holes are directly drilled into the mounting base. When repairing the pump body, it is necessary to disassemble and reassemble it. During the tightening of the bolts, various reasons may cause the bolts or threaded holes to strip to varying degrees. Once stripped, the bolt cannot properly engage with the threaded hole, and it is impossible to connect and fix the pump body to the mounting base. Replacing the entire bolt is wasteful, and the threaded holes on the mounting base require special tapping tools to tap new internal threads, which is inconvenient. Therefore, we provide an electronic parking brake pump assembly. Utility Model Content

[0004] The purpose of this utility model is to provide an electronic parking brake pump assembly to solve the problems mentioned in the background art.

[0005] During the tightening of bolts, various reasons may cause the bolts or bolt holes to strip to varying degrees. Once stripped, the bolt cannot properly engage with the bolt hole, and thus cannot connect and fix the pump body to the mounting base. Replacing the entire bolt would be wasteful, and the bolt hole on the mounting base requires a special tapping tool to tap a new internal thread, which is inconvenient.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] An electronic parking brake pump assembly includes a pump body, a mounting base, and a clamp. A connecting rod is detachably connected inside the pump body. One end of the connecting rod is fixedly connected to a bolt head, and the other end is fixedly connected to an insert rod. A screw is sleeved on the outside of the insert rod, and the screw is slidably connected to the insert rod. A sliding groove is formed inside the connecting rod, and a push rod is slidably connected inside the sliding groove. A through hole is formed inside the insert rod, and a first positioning rod is slidably connected inside the through hole. Inclined grooves are formed inside the push rod on both sides corresponding to the first positioning rod, and sliding rods are slidably connected inside the inclined grooves. The sliding rods are fixedly connected to the first positioning rod. A positioning hole is formed inside the screw, and the positioning hole cooperates with the first positioning rod.

[0008] Preferably, a first spring is provided between the push rod and the insertion rod, with one end of the first spring fixedly connected to the push rod and the other end of the first spring fixedly connected to the insertion rod.

[0009] Preferably, the mounting base has an internal mounting hole, and a mounting block is detachably connected inside the mounting hole. The mounting block has an internal screw hole, which is used in conjunction with a screw rod.

[0010] Preferably, the outer wall of the mounting block fits against the inner wall of the mounting hole.

[0011] Preferably, a second positioning rod is slidably connected inside the mounting base and on both sides of the mounting block. A connecting plate is fixedly connected to the outer end of the second positioning rod away from the mounting block. A second spring is provided between the connecting plate and the mounting base. One end of the second spring is fixedly connected to the mounting base, and the other end of the second spring is fixedly connected to the connecting plate. A positioning groove is provided inside the mounting block, and the positioning groove is used in conjunction with the second positioning rod.

[0012] Preferably, the cross-sections of the insert rod, push rod, mounting hole, and mounting block are all square structures.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] Pressing the push rod on the bolt head causes it to press against the sliding rod through the inner wall of the inclined groove. This causes the sliding rod to separate the first positioning rod from the positioning hole on the screw, allowing the screw to be removed. A new screw is then fitted onto the insert rod. Releasing the push rod causes the first spring to return the push rod to its original position, and the first positioning rod engages with the positioning hole on the new screw, completing the screw replacement. This eliminates the need to discard the entire bolt, saving costs. If the screw hole is stripped, simply pull the second positioning rod through the connecting plate to separate it from the positioning groove on the mounting block. The mounting block can then be removed from the mounting hole on the mounting base. After inserting the new mounting block, releasing the connecting plate causes the second spring to engage the second positioning rod with the positioning groove on the new mounting block, completing the screw replacement. This operation is more convenient and faster. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a cross-sectional schematic diagram of the mounting base of this utility model;

[0017] Figure 3 For the present utility model Figure 2 Enlarged view of point A in the image;

[0018] Figure 4 This is a schematic diagram of the push rod structure of this utility model.

[0019] The following are the labels in the diagram: 1. Pump body; 2. Mounting base; 3. Caliper; 4. Connecting rod; 5. Bolt head; 6. Insert rod; 7. Screw; 8. Slide groove; 9. Push rod; 10. Through hole; 11. First positioning rod; 12. Inclined groove; 13. Slide rod; 14. Positioning hole; 15. First spring; 16. Mounting hole; 17. Mounting block; 18. Screw hole; 19. Second positioning rod; 20. Connecting plate; 21. Second spring; 22. Positioning groove. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Please see Figures 1 to 4An electronic parking brake lower pump assembly includes a pump body 1, a mounting base 2, and a clamp 3. A connecting rod 4 is detachably connected inside the pump body 1. One end of the connecting rod 4 is fixedly connected to a bolt head 5, and the other end is fixedly connected to an insert rod 6. A screw 7 is sleeved on the outside of the insert rod 6. The screw 7 can be directly removed. When the screw 7 becomes stripped, the user only needs to replace this part of the screw 7, instead of replacing and discarding the entire bolt, thus reducing costs. The screw 7 and the insert rod 6 are slidably connected. A groove 8 is formed inside the connecting rod 4. The push rod 9 is internally slidably connected to the insert rod 6. The insert rod 6 has a through hole 10 inside. The first positioning rod 11 is slidably connected inside the through hole 10. The push rod 9 has inclined grooves 12 on both sides corresponding to the first positioning rod 11 inside. The inclined groove 12 has a sliding rod 13 slidably connected inside. The sliding rod 13 is fixedly connected to the first positioning rod 11. The screw 7 has a positioning hole 14 inside. The positioning hole 14 works with the first positioning rod 11. The first positioning rod 11 and the positioning hole 14 limit the movement between the screw 7 and the insert rod 6 to prevent the screw 7 from separating from the insert rod 6.

[0022] Furthermore, a first spring 15 is provided between the push rod 9 and the insertion rod 6. One end of the first spring 15 is fixedly connected to the push rod 9, and the other end of the first spring 15 is fixedly connected to the insertion rod 6. When the user presses the push rod 9, the push rod 9 will drive the first positioning rod 11 to separate from the positioning hole 14 through the inclined groove 12 and the slide rod 13. At this time, the screw 7 can be disassembled and replaced. After the push rod 9 is released, the elastic force of the first spring 15 will drive the push rod 9 to automatically reset, which can also ensure that the first positioning rod 11 is always engaged with the positioning hole 14.

[0023] Furthermore, the mounting base 2 has a mounting hole 16 inside, and a mounting block 17 is detachably connected inside the mounting hole 16. The mounting block 17 has a screw hole 18 inside, which is used in conjunction with the screw rod 7. If the screw hole 18 is stripped, the user can directly replace the mounting block 17 inside the mounting hole 16, thereby quickly replacing the screw hole 18. On the one hand, this avoids the situation where the pump body 1 cannot be installed normally due to the stripping of the screw hole 18, and on the other hand, it does not require the user to re-tapping, making it more convenient and faster.

[0024] Furthermore, the outer sidewall of the mounting block 17 fits against the inner sidewall of the mounting hole 16. After the mounting block 17 is installed into the mounting hole 16, the mounting block 17 can fit tightly into the mounting hole 16, so that the mounting block 17 will not vibrate within the mounting hole 16, thus ensuring the stability of the mounting block 17 within the mounting hole 16.

[0025] Furthermore, a second positioning rod 19 is slidably connected inside the mounting base 2 and on both sides of the mounting block 17. A connecting plate 20 is fixedly connected to the outer end of the second positioning rod 19 away from the mounting block 17. A second spring 21 is provided between the connecting plate 20 and the mounting base 2. One end of the second spring 21 is fixedly connected to the mounting base 2, and the other end of the second spring 21 is fixedly connected to the connecting plate 20. A positioning groove 22 is provided inside the mounting block 17. The positioning groove 22 works in conjunction with the second positioning rod 19. The tension of the second spring 21 causes the connecting plate 20 to drive the second positioning rod 19 to always be engaged with the positioning groove 22. The second positioning rod 19 and the positioning groove 22 are used to position the mounting block 17 installed in the mounting hole 16 to prevent the mounting block 17 from detaching from the mounting hole 16.

[0026] Furthermore, the cross-sections of the insert rod 6, push rod 9, mounting hole 16, and mounting block 17 are all square structures. The square structure can serve as a limiting mechanism, so that when the mounting block 17 is installed into the mounting hole 16, the mounting block 17 will not twist within the mounting hole 16. The square-structured insert rod 6 also limits the screw rod 7. Since the screw rod 7 needs to be screwed into the screw hole 18, the square structure can prevent the screw rod 7 from spinning freely, allowing the bolt head 5 to drive the screw rod 7 to rotate through the connecting rod 4 and the insert rod 6.

[0027] The usage steps of this utility model are as follows: When using this electronic parking brake pump assembly, if the bolts are stripped, the user can directly press the push rod 9 on the bolt head 5. The push rod 9 will press the slide rod 13 through the inner wall of the inclined groove 12. At this time, the slide rod 13 will cause the first positioning rod 11 to separate from the positioning hole 14 on the screw 7, and then the screw 7 can be removed. Then, take out the new screw 7 and put it on the insert rod 6. After releasing the push rod 9, the elastic force of the first spring 15 will cause the push rod 9 to return to its original position. At the same time, the first positioning rod 11 will also engage with the positioning hole 14 on the new screw 7, thereby completing the replacement of the screw 7 without the need for... The entire bolt can be discarded, saving costs. If the screw hole 18 is stripped, the user does not need to use a tapping tool. Simply pull the second positioning rod 19 through the connecting plate 20 to separate the second positioning rod 19 from the positioning groove 22 on the mounting block 17. Then the mounting block 17 can be removed from the mounting hole 16 on the mounting base 2. After inserting the new mounting block 17 into the mounting hole 16, release the connecting plate 20. The pulling force of the second spring 21 will drive the second positioning rod 19 to engage with the positioning groove 22 on the new mounting block 17, thereby completing the replacement of the screw hole 18. The operation is more convenient and faster.

[0028] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. An electronic parking brake pump assembly comprising a pump body (1), a mounting base (2) and a caliper (3), characterized in that: The inside of the pump body (1) is detachably connected with a connecting rod (4), one end of the connecting rod (4) is fixedly connected with a bolt head (5), the other end of the connecting rod (4) is fixedly connected with a plug rod (6), the outside of the plug rod (6) is sleeved with a screw rod (7), the screw rod (7) is in sliding connection with the plug rod (6), the inside of the connecting rod (4) is provided with a sliding groove (8), the inside of the sliding groove (8) is in sliding connection with a push rod (9), the inside of the plug rod (6) is provided with a through hole (10), the inside of the through hole (10) is in sliding connection with a first positioning rod (11), the inside of the push rod (9) and the corresponding two sides of the first positioning rod (11) are provided with inclined grooves (12), the inside of the inclined grooves (12) is in sliding connection with slide rods (13), the slide rods (13) are fixedly connected with the first positioning rod (11), the inside of the screw rod (7) is provided with a positioning hole (14), and the positioning hole (14) is used in cooperation with the first positioning rod (11).

2. An electric parking brake pump assembly as set forth in claim 1, characterized in that: The first spring (15) is arranged between the push rod (9) and the plug rod (6), one end of the first spring (15) is fixedly connected with the push rod (9), and the other end of the first spring (15) is fixedly connected with the plug rod (6).

3. An electric parking brake pump assembly as set forth in claim 1, wherein: The inside of the mounting seat (2) is provided with a mounting hole (16), the inside of the mounting hole (16) is detachably connected with a mounting block (17), the inside of the mounting block (17) is provided with a threaded hole (18), and the threaded hole (18) is used in cooperation with the screw rod (7).

4. An electric parking brake pump assembly as set forth in claim 3, wherein: The outer side wall of the mounting block (17) is attached to the inner side wall of the mounting hole (16).

5. An electric parking brake pump assembly as set forth in claim 3, wherein: The inside of the mounting seat (2) and the corresponding two sides of the mounting block (17) are in sliding connection with a second positioning rod (19), one end of the second positioning rod (19) away from the mounting block (17) is fixedly connected with a connecting plate (20), the second spring (21) is arranged between the connecting plate (20) and the mounting seat (2), one end of the second spring (21) is fixedly connected with the mounting seat (2), the other end of the second spring (21) is fixedly connected with the connecting plate (20), the inside of the mounting block (17) is provided with a positioning groove (22), and the positioning groove (22) is used in cooperation with the second positioning rod (19).

6. An electric parking brake pump assembly as set forth in claim 3, wherein: The cross sections of the plug rod (6), the push rod (9), the mounting hole (16) and the mounting block (17) are all square structures.

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