Positioning mechanism of built-in elastic handle of vehicle door handle

Abstract

The utility model discloses a positioning mechanism for a built-in elastic handle of a vehicle door handle, which comprises two positioning parts and a processing part which are independent from each other, the two positioning parts are respectively arranged at two axial end parts of a product and can clamp the product to keep stationary, the processing part is sleeved at the periphery of the middle part of the product, a bracket is arranged at the end part of the processing part, and a cutting tool is arranged on the bracket. A bearing is arranged on the inner wall of the machining part and sleeved outside the middle of the product. The long and thin rod piece is clamped and fixed through the two positioning parts, the machining part provided with the cutting tool is arranged to guide the rod piece, a product is fixed in the machining process, the machining part rotates to drive the cutting tool to rotate to achieve cutting machining, the problem that the radial run-out of the long and thin rod piece with the irregular rod is too large in the selecting process is solved, and the machining efficiency is improved. The machining precision can be improved with lower cost; by arranging the bearing, the product can be better supported, the friction force between the product and the machining part can be reduced to the maximum extent, the cutting resistance is reduced, and the cutting efficiency and the cutting precision are improved.

Description

Technical Field

[0001] This utility model relates to the field of machining technology, and in particular to a positioning mechanism for a built-in elastic handle in a car door handle. Background Technology

[0002] The built-in elastic handle of a car door is generally formed by bending a thin metal rod in three directions (XYZ). For ease of installation, a positioning groove is also provided at one end. In production, most manufacturers use a process of first cutting the positioning groove into the metal rod, then bending it, and finally cutting it off. However, this process not only involves many steps and a long production time, but also generates a lot of waste, making it difficult to reduce production costs. Alternatively, a process of first cutting and bending the rod and then cutting the groove can be used. This process has a relatively shorter production time, but due to the irregular structure of the product itself, the radial runout of the product is large during rotation and cutting, and the dimensional accuracy and surface finish of the positioning groove are not high. Utility Model Content

[0003] To address the problems existing in the prior art, this utility model provides a positioning mechanism for a built-in elastic handle in a car door handle. By using two positioning parts to clamp a slender rod, and setting up a machining part with a cutting tool to guide the rod, the product remains stationary during machining. The cutting is achieved by rotating the machining part to drive the cutting tool to rotate. This solves the problem of excessive radial runout when selecting irregular slender rods, and can improve machining accuracy at a lower cost.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0005] The positioning mechanism for the built-in elastic handle in the door handle includes two independent positioning parts and one machining part, wherein:

[0006] The two positioning parts are respectively located at the two axial ends of the product and can clamp and / or press against the two ends to keep the product fixed.

[0007] The processing section is sleeved around the middle periphery of the product and includes a positioning ring: the positioning ring is slidably mounted on a support base and is connected to a first driving device via a mandrel; the mandrel is sleeved around the periphery of the product; the first driving device can drive the mandrel to rotate the positioning ring on the support base; a bracket is provided on the positioning ring, and a second driving device and a cutting tool connected to it are provided on the bracket; the end of the cutting tool extends toward the axis of the positioning ring and can be translated radially along the positioning ring under the drive of the second driving device to cut the product; a bearing is detachably fixed to the inner wall and / or one end of the positioning ring; the bearing is fitted around the periphery of the product, and its inner diameter is larger than the outer diameter of the product and smaller than the inner diameter of the mandrel.

[0008] As a further explanation of the above technical solution:

[0009] In the above technical solution, the end of the cutting tool facing the product has one or more cutting edges arranged along the axial direction of the product.

[0010] In the above technical solution, the first driving device is a circular motion driving device, and the second driving device is a linear motion driving device.

[0011] In the above technical solution, an angle adjustment component is also hinged to the bracket, and the cutting tool is detachably fixed on the angle adjustment component.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows: by using two positioning parts to clamp the slender rod, and setting a machining part with a cutting tool to guide the middle of the rod, the product remains stationary during machining. The cutting tool rotates around the machining part to achieve cutting, which solves the problem of uneven radial runout and excessive runout in the cutting of irregular slender rods, and can improve machining accuracy at a lower cost; by setting a bearing with an inner diameter between the outer diameter of the product and the inner diameter of the mandrel on the machining part, the product can be better supported, and the friction between the product and the machining part can be minimized, reducing cutting resistance and improving cutting efficiency and cutting accuracy. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the product structure in this embodiment;

[0014] Figure 2 This is a partial cross-sectional structural schematic diagram of this embodiment;

[0015] Figure 3 yes Figure 2 Enlarged schematic diagram of part A in the middle.

[0016] In the diagram: 10, positioning part; 20, machining part; 21, positioning ring; 22, support base; 23, mandrel; 24, bracket; 25, second drive device; 26, cutting tool; 27, bearing; 28, angle adjustment component; 30, product; 31, bending; 32, positioning groove; 1, cutting edge. Detailed Implementation

[0017] The present invention will now be described in further detail with reference to the accompanying drawings.

[0018] The embodiments described with reference to the accompanying drawings are exemplary and intended to explain this application, and should not be construed as limiting this application. In the description of this application, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as limiting this application. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "several" or "more than" means two or more, unless otherwise explicitly specified. In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances. In this application, unless otherwise expressly specified and limited, "above" or "below" a second feature can include direct contact between the first and second features, or it can include contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of a second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" of a second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0019] For ease of understanding, Figure 1 The diagram shows the structure of the built-in elastic handle in the door handle of this embodiment. It can be seen that multiple bends 31 with different directions are formed on it, and two positioning grooves 32 need to be cut at one end.

[0020] like Figure 2 As shown, the positioning mechanism for the built-in elastic handle in the door handle includes two independent positioning parts 10 and a machining part 20, wherein:

[0021] Two positioning parts 10 are respectively provided at the two axial ends of the product 30 and can clamp and / or press against the two ends to keep the product 30 fixed.

[0022] The machining section 20 is fitted around the middle periphery of the product 30 and includes a positioning ring 21. The positioning ring 21 is slidably mounted on a support base 22 and is connected to a first drive device (not shown) via a spindle 23. The spindle 23 is fitted around the periphery of the product 30. The first drive device can drive the positioning ring 21 to rotate on the support base 22. A bracket 24 is provided on the positioning ring 21. A second drive device 25 and a cutting tool 26 connected to the bracket 24 are provided on the bracket 24. The end of the cutting tool 26 extends toward the axis of the positioning ring 21 and can be translated radially along the positioning ring 21 under the drive of the second drive device 25 to cut the product 30. A bearing 27 is detachably fixed to the inner wall and / or one end of the positioning ring 21. The bearing 27 is fitted around the periphery of the product 30, and its inner diameter is larger than the outer diameter of the product 30 and smaller than the inner diameter of the spindle 23.

[0023] like Figure 2 As shown, in use, the end of product 30 to be processed is embedded into the mandrel 23 inside the positioning ring 21, and product 30 is passed through bearing 27. The bearing 27 is fixed to the mandrel 23 with screws, and the bracket 24 is fixed to the mandrel 21. The mandrel 23 is connected to the first drive device (not shown), and the two positioning parts 10 are used to clamp or press the two ends of product 30 to ensure that product 30 does not rotate. During cutting, the first drive device is started to drive the mandrel 23 to drive the positioning ring 21, bearing 27, bracket 24 and the cutting tool 26 on it to rotate synchronously around the section of product 30 to be processed. At the same time, the second drive device 25 drives the cutting tool 26 to translate toward product 30. The mechanism works together to cut and form positioning groove 32 on product 30.

[0024] The clamping structure of the positioning part 10, the connection and fixing structure between the bracket 24 and the positioning ring 21, and the connection and fixing structure between the positioning ring 21 and the support base 22 have been widely used in the industry, and there are many optional assemblies on the market. The specific structure will not be described or limited here.

[0025] This invention employs two positioning parts 10 to clamp a slender rod, and a machining part 20 equipped with a cutting tool 26 to guide the center of the rod. During machining, the product 30 remains stationary, and the cutting tool 26 rotates around the machining part 20 to achieve cutting. This solves the problem of uneven and excessive radial runout of the product 30 when cutting irregular slender rods, and can improve machining accuracy at a lower cost. By providing a bearing 27 on the machining part 20 with an inner diameter between the outer diameter of the product 30 and the inner diameter of the mandrel 27, the product 30 can be better supported, and the friction between the product 30 and the machining part 20 can be minimized, reducing cutting resistance and improving cutting efficiency and accuracy.

[0026] like Figure 3 As shown, an angle adjustment member 28 is also hinged to the bracket 24, and the cutting tool 26 is detachably fixed to the angle adjustment member 28. The end of the cutting tool 26 facing the product 30 has one or more cutting edges 1 arranged along the axial direction of the product 30.

[0027] Understandably, the angle adjustment component 28 can adjust the relative angle between the bracket 24 and the product 30, thereby changing the cutting angle of the cutting edge 1 on the cutting tool 26, which facilitates quick and easy fine-tuning of the size and contour of the positioning groove 32. The structure of multiple cutting edges 1 makes it easy to cut multiple positioning grooves 32 on the product 30 at one time, further improving production efficiency.

[0028] In this embodiment, the first driving device is a circular motion driving device, and the second driving device 25 is a linear motion driving device.

[0029] The above does not limit the technical scope of this utility model. Any modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of this utility model shall still fall within the scope of the technical solution of this utility model.

Claims

1. A positioning mechanism for a door handle with an elastic pull handle, characterized in that: The machining part comprises two positioning parts and a machining part, wherein: The two positioning parts are respectively arranged at the two axial ends of the product and can clamp and / or press the two ends of the product to keep the product fixed; The machining part is sleeved on the outer periphery of the middle part of the product and comprises a positioning ring, the positioning ring is slidingly arranged on a support seat and is drivingly connected with a first driving device through a core shaft, the core shaft is sleeved on the outer periphery of the product, the first driving device can drive the core shaft to rotate the positioning ring on the support seat, a support is arranged on the positioning ring, a second driving device and a cutting tool drivingly connected with the second driving device are arranged on the support, the end of the cutting tool extends towards the axis of the positioning ring and can be translated along the radial direction of the positioning ring under the driving of the second driving device to cut the product, an inner wall and / or one end of the positioning ring is detachably and fixedly provided with a bearing, the bearing is matched and sleeved on the outer periphery of the product, the inner diameter of the bearing is greater than the outer diameter of the product and smaller than the inner diameter of the core shaft.

2. The door handle positioning mechanism according to claim 1, wherein The cutting tool is arranged with more than one chip blade along the axial direction of the product towards the end of the product.

3. The door handle positioning mechanism according to claim 1, wherein The first driving device is a circumferential motion driving device and the second driving device is a linear motion driving device.

4. The door handle positioning mechanism according to any one of claims 1 to 3, wherein The support is further hingedly provided with an angle adjusting member, and the cutting tool is detachably and fixedly arranged on the angle adjusting member.

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