Anti-backlash clutch gear for air pump

Abstract

The utility model discloses an anti-backlash clutch gear for an air pump, which comprises a main body unit comprising a fuel pump, the output end of the fuel pump is fixedly connected with a driving gear, the driving gear is fixedly provided with a convex gear, the convex gear is symmetrically and fixedly connected with bulges, the bulges are provided with threaded through holes, and the main body unit is fixedly connected with the driving gear. A steel ball, a spring and a screw are sequentially arranged in the threaded through hole, the two protrusions are arranged in opposite directions, an air pump is arranged on one side of the fuel pump, a concave gear is connected to the output end of the air pump in a sliding mode, and a movable assembly is arranged on the air pump. The output end of the fuel pump and the output end of the air pump are connected through mutual matching of the convex gear and the concave gear, meanwhile, the steel balls are ejected outwards through the spring and filled into the gap between the convex gear and the concave gear, the gear coupling gap is eliminated under the condition that the gear matching gap is not changed, and therefore gear knocking noise caused by the gap is eliminated.

Description

Technical Field

[0001] This utility model relates to the technical field of engines, and in particular to a backlash-free clutch gear for an air pump. Background Technology

[0002] Most modern car air pumps are powered by the engine, partly via belt drive and partly via gear drive. To decouple the air pump from the engine, a clutch gear is typically used. To ensure smooth coupling and disengagement, the clearance between the clutch gears is designed to be relatively large. This results in significant knocking noise between the gears, causing a sharp metallic knocking sound when the air pump is operating. This amplifies the engine noise and provides a poor user experience. As noise issues receive increasing attention, improving the knocking noise of the air pump's clutch gears is becoming increasingly important. Utility Model Content

[0003] The purpose of this section is to outline some aspects of embodiments of the present invention and to briefly describe some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of these documents; however, such simplifications or omissions should not be construed as limiting the scope of the present invention.

[0004] To solve the above-mentioned technical problems, this utility model provides the following technical solution:

[0005] A backlash-free clutch gear for an air pump, comprising:

[0006] The main unit includes a fuel pump. A drive gear is fixedly connected to the output end of the fuel pump. A cam gear is fixedly mounted on the drive gear. A protrusion is symmetrically fixedly connected to the cam gear. A threaded through hole is provided on the protrusion. A steel ball, a spring, and a screw are sequentially arranged in the threaded through hole. The two protrusions are arranged in opposite directions. An air pump is provided on one side of the fuel pump. A concave gear is slidably connected to the output end of the air pump. A movable component is provided on the air pump.

[0007] In a preferred embodiment of the backlash-free clutch gear for an air pump described in this utility model, the movable component includes a handle, which is rotatably connected to the air pump. A shift fork is fixedly connected to the handle. An I-shaped annular plate is fixedly connected to the concave gear, and the shift fork engages with the I-shaped annular plate. A limiting plate is fixedly connected to the air pump, and the limiting plate cooperates with the handle.

[0008] In a preferred embodiment of the backlash-free clutch gear for an air pump described in this utility model, a limiting plate is fixedly connected to the air pump, and the limiting plate cooperates with the handle.

[0009] As a preferred embodiment of the backlash-free clutch gear for an air pump described in this utility model, the diameters of the two ends of the threaded through hole are 6mm and 4mm respectively, the diameter of the middle part of the threaded through hole is 5mm, and the steel ball and screw are located at the 4mm end and the 6mm end respectively.

[0010] As a preferred embodiment of the backlash-free clutch gear for an air pump described in this utility model, the drive gear has multiple threaded grooves, the cam gear has multiple threaded holes, and the cam gear has multiple bolts, which cooperate with the threaded holes and threaded grooves.

[0011] In a preferred embodiment of the backlash-free clutch gear for an air pump described in this utility model, the steel ball, spring, and screw are all made of stainless steel.

[0012] The beneficial effects of this utility model are:

[0013] The output ends of the fuel pump and air pump are connected by the interaction of the cam and concave gears. At the same time, the spring pushes the steel ball outward to fill the gap between the cam and concave gears. Without changing the gear matching clearance, the gear coupling clearance is eliminated, thereby eliminating the gear knocking noise caused by the clearance. Attached Figure Description

[0014] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Among them:

[0015] Figure 1 This is a frontal schematic diagram of the overall structure of a backlash-free clutch gear for an air pump proposed in this utility model.

[0016] Figure 2 for Figure 1 of Figure 1 A schematic diagram of the local structure of the correct part;

[0017] Figure 3 for Figure 2 A schematic diagram of the front structure;

[0018] Figure 4 for Figure 3 Schematic diagram of the AA section structure;

[0019] Figure 5 for Figure 1 A partial structural diagram;

[0020] Figure 6 for Figure 1 A partial structural diagram.

[0021] In the diagram: 100, main unit; 101, fuel pump; 102, drive gear; 103, convex gear; 104, threaded groove; 105, threaded hole; 106, bolt; 107, protrusion; 108, steel ball; 109, spring; 110, screw; 111, air pump; 112, concave gear; 113, handle; 114, limiting plate; 115, shift fork; 116, I-shaped ring plate. Detailed Implementation

[0022] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0023] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0024] Secondly, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that excludes other embodiments.

[0025] Secondly, this utility model is described in detail with reference to the schematic diagrams. When describing the embodiments of this utility model, for ease of explanation, the cross-sectional views illustrating the device structure may be partially enlarged, not adhering to the usual scale. Furthermore, the schematic diagrams are merely examples and should not limit the scope of protection of this utility model. In addition, actual manufacturing should include the three-dimensional spatial dimensions of length, width, and depth.

[0026] Reference Figure 1-6 This utility model provides a backlash-free clutch gear for an air pump, comprising:

[0027] The main unit 100 includes a fuel pump 101. A drive gear 102 is fixedly connected to the output end of the fuel pump 101. A cam gear 103 is fixedly mounted on the drive gear 102. A protrusion 107 is symmetrically fixedly connected to the cam gear 103. A threaded through hole is provided on the protrusion 107. A steel ball 108, a spring 109, and a screw 110 are sequentially arranged in the threaded through hole. The two protrusions 107 are arranged in opposite directions. An air pump 111 is provided on one side of the fuel pump 101. A concave gear 112 is slidably connected to the output end of the air pump 111. A movable component is provided on the air pump 111.

[0028] The movable components include a handle 113, which is rotatably connected to an air pump 111. A shift fork 115 is fixedly connected to the handle 113. An I-shaped annular plate 116 is fixedly connected to the concave gear 112. The shift fork 115 engages with the I-shaped annular plate 116. A limiting plate 114 is fixedly connected to the air pump 111. The limiting plate 114 cooperates with the handle 113. The user can rotate the handle 113 to drive the shift fork 115 to move left and right, thereby driving the concave gear 112 to move left and right, so that the concave gear 112 and the convex gear 103 are coupled.

[0029] Furthermore, a limiting plate 114 is fixedly connected to the air pump 111. The limiting plate 114 cooperates with the handle 113 and restricts the handle 113 through the limiting plate 114.

[0030] Furthermore, the diameters at both ends of the threaded through hole are 6mm and 4mm respectively, and the diameter in the middle of the threaded through hole is 5mm. The steel ball 108 and the screw 110 are located at the 4mm end and the 6mm end respectively. By setting the steel ball 108, the spring 109 and the screw 110 in the threaded through hole, the steel ball 108 is pushed outward by the action of the spring 109.

[0031] Furthermore, the drive gear 102 has multiple threaded grooves 104, the cam gear 103 has multiple threaded holes 105, and the cam gear 103 has multiple bolts 106. The bolts 106 cooperate with the threaded holes 105 and the threaded grooves 104. The device fixes the cam gear 103 on the drive gear 102 by means of bolts 106, which facilitates the installation of the cam gear 103.

[0032] Furthermore, the steel ball 108, spring 109, and screw 110 are all made of stainless steel, which improves the service life of the device.

[0033] During use, the output ends of the fuel pump 101 and the air pump 111 are connected by the mutual engagement of the convex gear 103 and the concave gear 112. At the same time, the spring 109 pushes the steel ball 108 outward to fill the gap between the convex gear 103 and the concave gear 112. Without changing the gear engagement clearance, the gear coupling gap is eliminated, thereby eliminating the gear knocking noise caused by the gap.

[0034] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A backlash-free clutch gear for an air pump, characterized in that: include: The main unit (100) includes a fuel pump (101), a drive gear (102) is fixedly connected to the output end of the fuel pump (101), a cam gear (103) is fixedly provided on the drive gear (102), and a protrusion (107) is symmetrically fixedly connected on the cam gear (103). The protrusion (107) is provided with a threaded through hole, and a steel ball (108), a spring (109) and a screw (110) are sequentially provided in the threaded through hole. The two protrusions (107) are arranged in opposite directions. An air pump (111) is provided on one side of the fuel pump (101), and a concave gear (112) is slidably connected to the output end of the air pump (111). The air pump (111) is provided with a movable component.

2. The backlash-free clutch gear for an air pump according to claim 1, characterized in that: The movable component includes a handle (113) which is rotatably connected to an air pump (111). A fork (115) is fixedly connected to the handle (113). An I-shaped ring plate (116) is fixedly connected to the concave gear (112). The fork (115) engages with the I-shaped ring plate (116). A limiting plate (114) is fixedly connected to the air pump (111). The limiting plate (114) cooperates with the handle (113).

3. The backlash-free clutch gear for an air pump according to claim 2, characterized in that: A limiting plate (114) is fixedly connected to the air pump (111), and the limiting plate (114) cooperates with the handle (113).

4. The backlash-free clutch gear for an air pump according to claim 3, characterized in that: The diameters at both ends of the threaded through hole are 6mm and 4mm respectively, and the diameter in the middle of the threaded through hole is 5mm. The steel ball (108) and the screw (110) are located at the end with a diameter of 4mm and the end with a diameter of 6mm respectively.

5. A backlash-free clutch gear for an air pump according to claim 4, characterized in that: The drive gear (102) has multiple threaded grooves (104), the cam gear (103) has multiple threaded holes (105), and the cam gear (103) has multiple bolts (106), which are engaged with the threaded holes (105) and the threaded grooves (104).

6. A backlash-free clutch gear for an air pump according to claim 5, characterized in that: The steel ball (108), spring (109) and screw (110) are all made of stainless steel.

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