A rear buckle positioning assembly tool
By designing a rear bumper buckle positioning and assembly fixture, the fixture utilizes a base plate and positioning clamping mechanism to achieve precise positioning and stable connection of the buckle, solving the problem of inaccurate assembly of plastic buckles and improving the safety and efficiency of automobile production.
Patent Information
- Application Number
- CN202522092220.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-29
- Publication Date
- 2026-11-03
- Estimated Expiration
- 2035-09-29
AI Technical Summary
During the assembly of the rear bumper on the automobile assembly line, the plastic clips cannot be accurately aligned with the mounting holes, resulting in an unstable connection. This may affect the safety and quality of the vehicle and may also lead to clip breakage, increasing production costs and rework waste.
A rear bumper buckle positioning assembly fixture was designed, including a base plate, an anchor mounting base, and a positioning clamping mechanism. The axial pressing mechanism and the radial clamping mechanism ensure the accurate positioning and stable connection between the buckle and the part to be assembled.
It achieves precise alignment and secure connection between the clips and the parts to be assembled, avoiding assembly failures and clip breakage, and improving assembly efficiency and product quality.
Smart Images
Figure CN224927822U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of automotive parts assembly technology, specifically a rear bumper buckle positioning assembly fixture. Background Technology
[0002] In the rear bumper assembly process of the automobile final assembly line, the core step is to use multiple plastic clips to firmly connect the bumper to the rear longitudinal beam of the vehicle body or a special bracket. This connection method has been widely adopted in the automobile manufacturing industry due to the advantages of low cost and easy assembly of plastic clips.
[0003] However, during the current assembly process, it is impossible to ensure that each plastic clip is accurately aligned with the mounting hole. This not only leads to the clips not being pressed in properly, affecting the stability of the connection between the rear bumper and the vehicle body, which may in turn affect the overall safety and quality of the car; it can also result in excessive force, causing the plastic clips to break. Clip breakage not only increases the wear and tear on parts, leading to increased production costs, but also triggers rework, further wasting manpower, resources, and time, and increasing rework costs. To address this, we propose a rear bumper clip positioning assembly fixture. Utility Model Content
[0004] The purpose of this utility model is to provide a rear bumper buckle positioning assembly fixture to solve the problems mentioned in the background art.
[0005] The objective of this utility model can be achieved through the following technical solutions: A rear bumper buckle positioning assembly fixture includes: a base plate, wherein an anchor mounting seat is fixedly installed on the upper end of the base plate near the rear end; characterized in that: a pressing mechanism is provided at the center of the upper end of the anchor mounting seat, the pressing mechanism being used to perform an axial pressing operation on the buckle to complete the assembly; a positioning clamping mechanism is fixedly installed on the inner side of the base plate, the positioning clamping mechanism being used to radially clamp and limit the buckle, and accurately position the relative position of the buckle and the mounting hole of the accessory to be assembled; The positioning and clamping mechanism includes an annular inner cavity on its inner side. An upper bevel gear is rotatably mounted at the upper end of the inner side of the annular inner cavity. Several clamping claw teeth are evenly spaced on the upper end of the upper bevel gear. A clamping block is fixedly mounted on the upper end of each clamping claw tooth. An upper conical gear is meshed with the outer wall of the upper bevel gear. An upper rotating rod is fixedly mounted on one side of the upper conical gear.
[0006] Preferably, the pressing mechanism includes a pressing shaft seat fixedly installed at the upper center near the rear end, a pressing rod rotatably installed on the inner side of the pressing shaft seat, a transmission rod rotatably installed at the end of the pressing rod away from the pressing shaft seat, and a pressing head fixedly installed at the lower end of the transmission rod.
[0007] Preferably, a guide mounting seat is fixedly installed at one end of the anchor mounting seat near the lower end, and a guide sleeve is provided on the inner side of the guide mounting seat to facilitate the insertion and installation of the pressure head.
[0008] Preferably, a lower bevel gear is rotatably mounted at the lower end of the inner side of the annular cavity, and a plurality of positioning teeth are equally spaced at the lower end of the lower bevel gear. Positioning pins are fixedly mounted at the lower ends of the positioning teeth. A lower conical gear is meshed with the outer side wall of the lower bevel gear, and a lower rotating rod is fixedly mounted on one side of the lower conical gear.
[0009] Preferably, the inner wall of the guide sleeve is provided with a plurality of guide protrusions along the axial direction, the outer wall of the transmission rod is provided with a guide groove adapted to the guide protrusions, and a plurality of spring support feet are fixedly installed at the lower end of the base plate, and an anchoring suction cup is fixedly installed at the lower end of the spring support feet.
[0010] The beneficial effects of this utility model are: This invention uses a lower bevel gear in the positioning and clamping mechanism to drive the positioning teeth and positioning pins, which can accurately insert the positioning pins into the mounting holes of the parts to be assembled, thus achieving precise positioning of the buckle and the mounting holes of the parts to be assembled. At the same time, the upper bevel gear drives the clamping claw teeth and clamping blocks to radially clamp and limit the buckle, preventing the buckle from radially shifting during assembly, further ensuring the accuracy of the assembly position, and effectively avoiding assembly failure or product quality problems caused by inaccurate positioning. Attached Figure Description
[0011] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Figure 1 This is a first-view schematic diagram of the overall structure of this utility model; Figure 2 This is a second-view schematic diagram of the overall structure of this utility model; Figure 3 This is an enlarged schematic diagram of the positioning and clamping mechanism of this utility model; Figure 4 This is a schematic diagram showing the internal structure of the positioning and clamping mechanism of this utility model.
[0012] The reference numerals in the figure are as follows: 1. Base plate; 2. Anchor mounting seat; 21. Guide mounting seat; 3. Pressing mechanism; 31. Pressing shaft seat; 32. Pressing rod; 33. Transmission rod; 34. Guide sleeve; 35. Press head; 4. Positioning and clamping mechanism; 41. Upper bevel gear; 42. Clamping claw teeth; 421. Clamping block; 43. Upper conical gear; 431. Upper rotating rod; 44. Lower bevel gear; 45. Positioning teeth; 451. Positioning pin; 46. Lower conical gear; 461. Lower rotating rod. Detailed Implementation
[0013] 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 skilled in the art without creative effort are within the protection scope of the present utility model.
[0014] like Figures 1-4 As shown, a rear bumper buckle positioning assembly fixture includes: a base plate 1, an anchor mounting seat 2 fixedly installed at the upper end of the base plate 1 near the rear end, characterized in that: a pressing mechanism 3 is provided at the upper center of the anchor mounting seat 2, the pressing mechanism 3 is used to perform axial pressing operation on the buckle to complete the assembly; a positioning clamping mechanism 4 is fixedly installed on the inner side of the base plate 1, the positioning clamping mechanism 4 is used to radially clamp and limit the buckle, and accurately position the relative position of the buckle and the mounting hole of the accessory to be assembled.
[0015] In specific implementation, the base plate 1 serves as the basic load-bearing component of the tooling, providing an installation benchmark and support carrier for core components such as the anchor mounting base 2 and the positioning clamping mechanism 4, ensuring the positional accuracy of each component after assembly. The anchor mounting base 2 is mainly used to fix and support the pressing mechanism 3, enabling the pressing mechanism 3 to stably achieve axial pressing action. The pressing mechanism 3 and the positioning clamping mechanism 4 form a collaborative working relationship. The positioning clamping mechanism 4 first completes the radial fixing and position calibration of the buckle, and then the pressing mechanism 3 performs axial pressing assembly. The two work together to achieve precise and efficient installation of the buckle.
[0016] As a technical optimization of this utility model, the pressing mechanism 3 includes a pressing shaft seat 31 fixedly installed at the upper center near the rear end. A pressing rod 32 is rotatably installed on the inner side of the pressing shaft seat 31. A transmission rod 33 is rotatably installed at the end of the pressing rod 32 away from the pressing shaft seat 31. A pressing head 35 is fixedly installed at the lower end of the transmission rod 33. A guide mounting seat 21 is fixedly installed at one end of the anchor mounting seat 2 near the lower end. A guide sleeve 34 is provided on the inner side of the guide mounting seat 21 to facilitate the insertion and installation of the pressing head 35.
[0017] In specific implementation, the pressing shaft seat 31 provides a rotation fulcrum for the pressing rod 32 and is the starting support component for force transmission in the pressing mechanism 3. As the core of the lever structure, the pressing rod 32 transmits the force applied by the operator to the transmission rod 33 through rotation around the pressing shaft seat 31. The transmission rod 33 plays the role of force transmission and direction conversion, converting the rotational force of the pressing rod 32 into axial pressure and transmitting it to the pressing head 35. The pressing head 35 directly contacts the buckle and pushes the buckle into the mounting hole of the part to be assembled through axial pressing action, thus completing the assembly process. The guide mounting seat 21 is used to fix and support the guide sleeve 34, ensuring that the guide sleeve 34 is stable in position during tooling operation. The guide sleeve 34 accurately guides the movement trajectory of the transmission rod 33 and the pressing head 35, restricts its radial deviation, and ensures that the pressing head 35 always moves axially during pressing, thereby ensuring that the buckle can be accurately aligned with the mounting hole of the part to be assembled, improving assembly accuracy.
[0018] As a technical optimization of this utility model, the positioning and clamping mechanism 4 includes an annular inner cavity on its inner side. An upper bevel gear 41 is rotatably installed at the upper end of the inner side of the annular inner cavity. A plurality of clamping claw teeth 42 are installed at equal intervals on the upper end of the upper bevel gear 41. A clamping block 421 is fixedly installed on the upper end of each clamping claw tooth 42. An upper conical gear 43 is meshed on the outer side wall of the upper bevel gear 41. An upper rotating rod 431 is fixedly installed on one side of the upper conical gear 43.
[0019] In specific implementation, the annular inner cavity provides installation space and motion chamber for the internal components of the positioning and clamping mechanism 4, ensuring the normal operation of each gear and rack structure. The upper bevel gear 41, as the core gear for power transmission, drives several clamping claw teeth 42 to move synchronously through its own rotation. The clamping claw teeth 42 achieve radial extension and retraction under gear drive, thereby driving the clamping block 421 to move closer to or away from the buckle. The clamping block 421 directly contacts the side wall of the buckle. The radial limit fixation of the buckle is achieved through multi-claw coordinated clamping, preventing the buckle from shifting or tilting during the pressing process. The upper conical gear 43 is used to convert the rotation direction of the upper rotating rod 431 to the rotation direction of the upper bevel gear 41, realizing the direction of power transmission. The upper rotating rod 431 provides a force application point for the operator. By rotating the upper rotating rod 431, the upper conical gear 43 is driven to rotate, thereby controlling the clamping or releasing action of the clamping block 421.
[0020] As a technical optimization of this utility model, a lower bevel gear 44 is rotatably installed at the lower end of the inner side of the annular cavity. A number of positioning teeth 45 are installed at equal intervals at the lower end of the lower bevel gear 44. Positioning pins 451 are fixedly installed at the lower ends of the positioning teeth 45. A lower conical gear 46 is meshed on the outer wall of the lower bevel gear 44. A lower rotating rod 461 is fixedly installed on one side of the lower conical gear 46.
[0021] In practice, the lower bevel gear 44 and the upper bevel gear 41 have similar structures and serve as the core of power transmission for the positioning assembly. By rotating, the lower bevel gear 44 drives the positioning gear 45 to move synchronously. Under the drive of the gear, the positioning gear 45 achieves radial extension and retraction, which drives the positioning pin 451 to adjust its position. The positioning pin 451 is used to insert into the positioning hole of the part to be assembled or to cooperate with the specific structure of the part to be assembled, so as to achieve the relative positioning of the part to be assembled and the tooling, thereby ensuring the precise alignment of the buckle and the mounting hole of the part to be assembled. The lower bevel gear 46 acts as a power steering mechanism, converting the rotation direction of the lower rotating rod 461 into the rotation direction of the lower bevel gear 44. The lower rotating rod 461 provides an operating component for positioning adjustment. The operator controls the position of the positioning pin 451 by rotating the lower rotating rod 461 to complete the positioning of the part to be assembled.
[0022] As a technical optimization of this utility model, the inner sidewall of the guide sleeve 34 is provided with a number of guide protrusions along the axial direction, the outer sidewall of the transmission rod 33 is provided with a guide groove that matches the guide protrusions, and a number of spring support feet are fixedly installed at the lower end of the base plate 1, and an anchoring suction cup is fixedly installed at the lower end of the spring support feet.
[0023] In practice, the guide protrusion on the inner side of the guide sleeve 34 and the guide groove on the outer side of the transmission rod 33 form a sliding fit structure, which further enhances the constraint on the movement trajectory of the transmission rod 33, effectively preventing the transmission rod 33 from rotating or radially offset during axial movement, ensuring the pressing accuracy of the pressure head 35. The spring support at the lower end of the base plate 1 has a buffering and shock absorption function, which can absorb the vibration generated during the tooling operation and reduce the impact of vibration on the assembly accuracy. At the same time, it can adapt to slightly uneven mounting surfaces. The anchoring suction cup at the lower end of the spring support can fix the tooling to the workbench or the surface of the parts to be assembled through adsorption, preventing the tooling from shifting during the assembly operation and improving the overall stability of the tooling.
[0024] Working principle: First, the base plate 1 is fixed to the surface of the part to be assembled by the spring support foot and the anchor suction cup at the lower end to ensure the overall stability of the tooling. The operator rotates the lower rotating rod 461, which drives the lower conical gear 46 to rotate. The lower conical gear 44, which meshes with the lower conical gear 46, rotates in the annular inner cavity of the positioning and clamping mechanism 4, thereby driving the positioning teeth 45 installed at equal intervals to move synchronously, so that the positioning pin 451 at the lower end of the positioning teeth 45 is accurately inserted into the mounting hole of the part to be assembled, completing the initial alignment of the buckle with the mounting hole of the part to be assembled. Next, place the buckle to be assembled in the clamping area of the positioning clamping mechanism 4, rotate the upper rotating rod 431 to drive the upper conical gear 43 to rotate, and the upper conical gear 41 meshing with the upper conical gear 43 rotates at the upper end of the annular inner cavity, driving several clamping claw teeth 42 to radially contract, so that the clamping block 421 at the upper end of the clamping claw teeth 42 tightly fits the side wall of the buckle, forming a radial clamping limit on the buckle, preventing the buckle from radially shifting during subsequent assembly; Finally, the operator presses down on the pressing rod 32, which rotates around the pressing shaft seat 31, transmitting the force to the transmission rod 33. Under the constraint of the guide sleeve 34 inside the guide mounting seat 21, the transmission rod 33 moves downward along the axis through the cooperation of the guide protrusion and the guide groove, driving the lower end pressure head 35 to move down synchronously, applying axial pressure to the clamped and limited buckle, and accurately pressing the buckle into the mounting hole of the part to be assembled, thus completing the entire assembly process.
[0025] 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 illustrative of the principles of this 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.
Claims
1. A rear bumper buckle positioning assembly fixture, comprising: A base plate (1) is fixedly installed with an anchor mounting seat (2) at the upper end near the rear end. The anchor mounting seat (2) is characterized in that: a pressing mechanism (3) is provided at the upper center of the anchor mounting seat (2). The pressing mechanism (3) is used to perform axial pressing operation on the buckle to complete the assembly. A positioning clamping mechanism (4) is fixedly installed on the inner side of the base plate (1). The positioning clamping mechanism (4) is used to radially clamp and limit the buckle, and accurately position the relative position of the buckle and the mounting hole of the accessory to be assembled. The positioning and clamping mechanism (4) includes an annular inner cavity on its inner side. An upper bevel gear (41) is rotatably installed at the upper end of the inner side of the annular inner cavity. Several clamping claw teeth (42) are installed at equal intervals on the upper end of the upper bevel gear (41). A clamping block (421) is fixedly installed on the upper end of each clamping claw tooth (42). An upper conical gear (43) is meshed on the outer wall of the upper bevel gear (41). An upper rotating rod (431) is fixedly installed on one side of the upper conical gear (43).
2. The rear bumper buckle positioning assembly fixture according to claim 1, characterized in that, The pressing mechanism (3) includes a pressing shaft seat (31) fixedly installed at the upper center near the rear end. A pressing rod (32) is rotatably installed on the inner side of the pressing shaft seat (31). A transmission rod (33) is rotatably installed at the end of the pressing rod (32) away from the pressing shaft seat (31). A pressure head (35) is fixedly installed at the lower end of the transmission rod (33).
3. The rear bumper buckle positioning assembly fixture according to claim 2, characterized in that, One end of the anchor mounting base (2) is fixedly installed with a guide mounting base (21) near the lower end. The guide mounting base (21) has a guide sleeve (34) on its inner side for easy insertion and installation of the pressure head (35).
4. The rear bumper buckle positioning assembly fixture according to claim 1, characterized in that, A lower bevel gear (44) is rotatably mounted at the lower end of the inner side of the annular cavity. A number of positioning teeth (45) are installed at equal intervals at the lower end of the lower bevel gear (44). Positioning pins (451) are fixedly installed at the lower ends of the positioning teeth (45). A lower conical gear (46) is meshed on the outer wall of the lower bevel gear (44). A lower rotating rod (461) is fixedly installed on one side of the lower conical gear (46).
5. The rear bumper buckle positioning assembly fixture according to claim 3, characterized in that, The inner wall of the guide sleeve (34) is provided with several guide protrusions along the axial direction, and the outer wall of the transmission rod (33) is provided with a guide groove that matches the guide protrusions. Several spring support feet are fixedly installed at the lower end of the base plate (1), and an anchoring suction cup is fixedly installed at the lower end of the spring support feet.