Vacuum pump connecting rod assembling tool

Abstract

The utility model particularly relates to the technical field of vacuum pumps, and discloses a vacuum pump connecting rod assembling tool which comprises two sets of limiting tools, a pump body assembly and two sets of connecting rod crankshaft assemblies, the pump body assembly comprises an outer shell, a second notch is formed in the surface of the outer shell, a motor shaft is rotationally connected into the second notch, and the motor shaft is fixedly connected with the limiting tools. Two mounting grooves are symmetrically formed in the side wall of the limiting tool and communicate with the second notch. The limiting tool is arranged, the limiting tool comprises the first limiting block, the second limiting block and the first hole groove, the external size of the first limiting block is matched with the internal size of the mounting groove, the first limiting block is conveniently clamped and positioned, the internal size of the first limiting block is matched with the external sizes of the two second connecting rods, and the second connecting rods are clamped and positioned conveniently. When the outer surface of the motor shaft is sleeved with the mounting base, the convenience and precision of mounting and positioning of the two connecting rod crankshaft assemblies are improved, and the assembling efficiency and the sequential qualification rate are improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of vacuum pumps, and in particular relates to a vacuum pump connecting rod assembly tool. Background Art

[0002] Electric vacuum pumps are also called power-boosting pumps. Nowadays, electric vacuum pump technology is widely used in new energy vehicle technology. New energy vehicles are driven by electric motors and traditional engine drives are eliminated, so the vacuum source is lost. Therefore, electric vacuum pumps have become the only and reliable vacuum source for the braking system of new energy vehicles, and play a vital role in the braking system of new energy vehicles and hybrid vehicles. Electric vacuum pumps are power-boosting devices for the braking system and steering system of new energy vehicles. The function of electric vacuum pumps is to generate negative pressure, thereby increasing the braking force.

[0003] During the production and assembly process of existing electric vacuum pumps, it is necessary to place the connecting rod crankshaft assembly on the motor shaft inside the pump body. Due to the small installation space of the vacuum pump, a modified concentric caliper is required to measure whether the heights on both sides are consistent to ensure the concentricity of the connecting rods on both sides. Errors are prone to occur during the caliper measurement and positioning process, and multiple measurements are required, which affects the efficiency and quality of the installation of the connecting rod crankshaft assembly. Utility Model Content

[0004] The utility model provides a vacuum pump connecting rod assembly tool, which aims to solve the problem that during the production and assembly process of the existing electric vacuum pump, the connecting rod crankshaft assembly needs to be placed on the motor shaft inside the pump body; since the installation space of the vacuum pump is small, a modified concentric caliper is needed to measure whether the heights on both sides are consistent to ensure the concentricity of the connecting rods on both sides, thereby affecting the installation efficiency and quality of the connecting rod crankshaft assembly.

[0005] The utility model is implemented as follows: a vacuum pump connecting rod assembly tool, comprising two groups of limiting tooling, a pump body assembly and two groups of connecting rod crankshaft assemblies, the pump body assembly comprising an outer shell, the surface of the outer shell is provided with a notch two, the inside of the notch two is rotatably connected with a motor shaft, the side wall of the limiting tooling is symmetrically provided with two mounting grooves that are both connected with the notch two, the two groups of limiting tooling each include a limiting block one inserted into the mounting groove, the end of the limiting block one away from the outer shell is fixedly provided with a limiting block two, the middle position of the limiting block one is provided with a hole groove one, the two groups of connecting rod crankshaft assemblies each include a mounting seat sleeved on the outer surface of the motor shaft, the side wall of the mounting seat close to the limiting block one is fixedly provided with a connecting rod one, the other end of the connecting rod one is fixedly provided with a connecting rod two, and the other end of the connecting rod two is sequentially inserted into the inside of the hole groove one.

[0006] Preferably, the limit block 1 and the limit block 2 are both made of stainless steel and are fixedly connected to form an integral body. The radius of the limit block 2 is one centimeter larger than the radius of the limit block 1, so as to facilitate the clamping of the limit block 1.

[0007] Preferably, a slot 1 is provided on the side wall of the limiting block 2, the slot 1 does not penetrate the side wall of the limiting block 1, and the slot 1 is connected to the limiting block 1, thereby reducing the deadweight of the limiting tooling.

[0008] Preferably, an anti-sliding block is fixedly provided on the side wall of the notch 1, and an anti-slip groove is provided on the surface of the anti-sliding block, thereby improving the stability of the movement of the limiting tooling.

[0009] Preferably, a second hole is provided on the surface of the slot opening 1 close to the first hole, and the second hole passes through the first limit block and the second limit block in sequence, thereby expanding the installation space.

[0010] Preferably, thread grooves are provided at the four corners of the outer shell, thereby improving the convenience of sealing the top end of the outer shell.

[0011] Preferably, the connecting rods 1 are all L-shaped, the two connecting rods 1 are centrally symmetrical, and the connecting rods 2 are all cylindrical and located at the same horizontal position, so that the connecting rods 2 are coaxial.

[0012] Compared with the prior art, the embodiments of the present application have the following beneficial effects:

[0013] Firstly, by setting a limiting fixture, the limiting fixture includes a limiting block 1, a limiting block 2 and a hole slot 1, the external dimensions of the limiting block 1 are all matched with the internal dimensions of the installation slot, so as to facilitate the clamping and positioning of the limiting block 1, and the internal dimensions of the limiting block 1 are all matched with the external dimensions of the two connecting rods 2. When the mounting seat sleeve is arranged on the outer surface of the motor shaft, the convenience and accuracy of the installation and positioning of the two connecting rod crankshaft assemblies are improved, and the assembly efficiency and the qualified rate are improved; secondly, by setting a notch 1 and an anti-sliding block, the notch 1 is opened on the side walls of the limiting block 2 and the limiting block 1, thereby reducing the dead weight of the limiting fixture, and the rough surface of the anti-sliding block improves the stability of the movement of the limiting fixture. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the front view installation structure of the utility model.

[0015] Figure 2 It is a front view stereoscopic structural schematic diagram of the pump body assembly of the present utility model.

[0016] Figure 3 It is a schematic diagram of the front cross-sectional installation structure of the utility model.

[0017] Figure 4 It is a schematic diagram of the three-dimensional structure of the limiting tooling of the utility model from a side view.

[0018] The accompanying drawings are marked as follows: 1. Limiting tooling; 101. Limiting block one; 102. Limiting block two; 103. Hole groove one; 104. Slot one; 105. Anti-sliding block; 106. Hole groove two; 2. Pump body assembly; 201. Outer shell; 202. Slot two; 203. Motor shaft; 204. Mounting groove; 205. Threaded groove; 3. Connecting rod crankshaft assembly; 301. Mounting seat; 302. Connecting rod one; 303. Connecting rod two. DETAILED DESCRIPTION

[0019] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by technicians in the technical field of this application; the terms used in the specification of the application herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the specification and claims of this application and the above-mentioned drawings are intended to cover non-exclusive inclusions. The terms "first", "second", etc. in the specification and claims of this application or the above-mentioned drawings are used to distinguish different objects, not to describe a specific order.

[0020] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0021] See also Figure 1-4The embodiment provided by the utility model is a vacuum pump connecting rod assembly tool, including two sets of limit tooling 1, a pump body assembly 2 and two sets of connecting rod crankshaft assemblies 3, the pump body assembly 2 includes an outer shell 201, a second notch 202 is provided on the surface of the outer shell 201, and a motor shaft 203 is rotatably connected inside the second notch 202, and two installation grooves 204 are symmetrically provided on the side wall of the limit tooling 1, both of which are connected to the second notch 202, and the two sets of limit tooling 1 include plugs inserted in the installation grooves 204 The outer dimensions of the limit block 101 are adapted to the inner dimensions of the mounting groove 204. The end of the limit block 101 away from the outer shell 201 is fixed with a limit block 102. The limit block 101 and the limit block 102 are both made of stainless steel and are fixedly connected to form an integral body. The radius of the limit block 102 is one centimeter larger than the radius of the limit block 101, which is convenient for clamping the limit block 101. A hole slot 102 is opened in the middle of the limit block 101. 03, the two connecting rod crankshaft assemblies 3 both include a mounting seat 301 sleeved on the outer surface of the motor shaft 203, the mounting seat 301 is fixed with a connecting rod 1 302 on the side wall close to the limit block 101, and the other end of the connecting rod 1 302 is fixed with a connecting rod 2 303, the connecting rod 1 302 is L-shaped, the two connecting rods 1 302 are centrally symmetrical, and the connecting rods 2 303 are cylindrical and located at the same horizontal position, so that the connecting rods 2 303 are coaxial, and the other end of the connecting rods 2 303 They are inserted into the inside of the hole groove 103 in sequence, and the internal dimensions of the hole groove 103 are compatible with the external dimensions of the connecting rod 2 303. When the two mounting seats 301 are sleeved on the outer surface of the motor shaft 203, the other ends of the connecting rod 2 303 are inserted into the inside of the hole groove 103 in sequence, which can limit the displacement of the mounting seats 301, thereby facilitating the adjustment of the height of the two sets of mounting seats 301 sleeved on the outer surface of the motor shaft 203, thereby improving the convenience and accuracy of the installation and positioning of the two connecting rod crankshaft assemblies 3.

[0022] A slot 104 is provided on the side wall of the limit block 102, and the slot 104 does not penetrate the side wall of the limit block 101. The slot 104 is connected to the limit block 101, which reduces the self-weight of the limit tool 1. An anti-slip block 105 is fixed on the side wall of the slot 104, and an anti-slip groove is provided on the surface of the anti-slip block 105, which improves the stability of the movement of the limit tool 1. A hole groove 106 is provided on the surface of the slot 104 near the hole groove 103, and the hole groove 106 penetrates the limit block 101 and the limit block 102 in sequence, thereby expanding the installation space and further reducing the self-weight of the limit tool 1.

[0023] Thread grooves 205 are provided at the four corners of the outer shell 201 for threaded connection with bolts, thereby improving the convenience of sealing the top end of the outer shell 201.

[0024] Working principle: When using this vacuum pump connecting rod assembly tool, the operator first sets the two mounting seats 301 on the outer surface of the motor shaft 203 in sequence, and then symmetrically inserts the two limit blocks 101 into the interior of the mounting groove 204 in sequence. The internal dimensions of the mounting groove 204 are adapted to the external dimensions of the limit block 101, which is convenient for clamping the limit tool 1. The radius of the limit block 102 is larger than that of the limit block 101, which can limit the displacement of the limit block 101 and improve the insertion of the limit block 101 into the mounting groove 2. 04 internal stability, the operator then adjusts the two connecting rods 303, so that the connecting rods 303 are inserted into the hole groove 103 in sequence, so that the two connecting rods 303 are coaxial, and the operator then fixes the two mounting seats 301 to the outer surface of the motor shaft 203 by bolts to limit the sliding of the mounting seats 301, thereby improving the convenience and accuracy of the installation and positioning of the two connecting rod crankshaft assemblies 3, improving the assembly efficiency and the pass rate in sequence, and naturally reducing the cost, making the vacuum pump assembly more stable and reliable.

[0025] Secondly, the notch 104 is formed on the side walls of the second limiting block 102 and the first limiting block 101, thereby reducing the deadweight of the limiting fixture 1, and the rough surface of the anti-sliding block 105 improves the stability of the movement of the limiting fixture 1.

[0026] It should be noted that, for the above-mentioned embodiments, for the sake of simplicity, they are all described as a series of action combinations, but those skilled in the art should know that the utility model is not limited by the described action sequence, because according to the utility model, some steps may be performed in other sequences or simultaneously. Secondly, those skilled in the art should also know that the embodiments described in the specification are all preferred embodiments, and the actions and modules involved are not necessarily required by the utility model.

[0027] In the several embodiments provided in the present application, it should be understood that the disclosed devices can be implemented in other ways. For example, the device embodiments described above are merely schematic, such as the division of the above-mentioned units. There may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or communication connection shown or discussed can be through some interfaces, and the indirect coupling or communication connection between devices or units can be in the form of telecommunication or other forms.

[0028] The units described above as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0029] The above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit the protection scope of the utility model. Obviously, the described embodiments are only some embodiments of the utility model, rather than all embodiments. Based on these embodiments, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model. Although the utility model has been described in detail with reference to the above embodiments, ordinary technicians in this field can still combine, add, delete or make other adjustments to the features in the various embodiments of the utility model according to the circumstances without conflict, without making creative work, so as to obtain different other technical solutions that do not deviate from the concept of the utility model in essence, and these technical solutions also belong to the scope of protection of the utility model.

Claims

1. A vacuum pump connecting rod assembly tool, characterized in that: The invention comprises two sets of position limiting fixtures (1), a pump body assembly (2) and two sets of connecting rod crankshaft assemblies (3): the pump body assembly (2) comprises an outer shell (201), a second notch (202) is provided on the surface of the outer shell (201), a motor shaft (203) is rotatably connected inside the second notch (202), two installation grooves (204) are symmetrically provided on the side wall of the position limiting fixture (1), both of which are connected to the second notch (202), and the two sets of position limiting fixtures (1) each comprise a position limiting block (101) inserted into the installation groove (204), and the position limiting block (101) The ends away from the outer shell (201) are fixedly provided with limit blocks 2 (102), and a hole groove 1 (103) is opened at the middle position of the limit block 1 (101). The two groups of connecting rod crankshaft assemblies (3) include a mounting seat (301) sleeved on the outer surface of the motor shaft (203), and a connecting rod 1 (302) is fixedly provided on the side wall of the mounting seat (301) close to the limit block 1 (101), and a connecting rod 2 (303) is fixedly provided at the other end of the connecting rod 1 (302), and the other end of the connecting rod 2 (303) is inserted into the inside of the hole groove 1 (103) in turn.

2. The vacuum pump connecting rod assembly tool according to claim 1, characterized in that: The limiting block 1 (101) and the limiting block 2 (102) are both made of stainless steel and are fixedly connected to form an integral body. The radius of the limiting block 2 (102) is one centimeter greater than the radius of the limiting block 1 (101).

3. The vacuum pump connecting rod assembly tool according to claim 2, characterized in that: A slot one (104) is provided on the side wall of the second limiting block (102); the slot one (104) does not penetrate the side wall of the first limiting block (101); the slot one (104) is connected to the first limiting block (101).

4. The vacuum pump connecting rod assembly tool according to claim 3, characterized in that: An anti-slip block (105) is fixedly provided on the side wall of the slot opening (104), and an anti-slip groove is provided on the surface of the anti-slip block (105).

5. The vacuum pump connecting rod assembly tool according to claim 4, characterized in that: The surface of the slot opening 1 (104) close to the hole slot 1 (103) is provided with a hole slot 2 (106), and the hole slot 2 (106) passes through the limiting block 1 (101) and the limiting block 2 (102) in sequence.

6. The vacuum pump connecting rod assembly tool according to claim 1, characterized in that: The outer shell (201) is provided with thread grooves (205) at four corners.

7. The vacuum pump connecting rod assembly tool according to claim 1, characterized in that: The connecting rods 1 (302) are all L-shaped, the two connecting rods 1 (302) are centrally symmetrical, and the connecting rods 2 (303) are all cylindrical and located at the same horizontal position.

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