Positioning device for positioning the mounting posture of an upper control arm

Abstract

The utility model discloses a positioning device for positioning upper control arm installation posture, including basic positioning subassembly, clamping mechanism and upper control arm limiting portion, basic positioning subassembly is used for being limited transverse degree of freedom in the shock absorbing board lower part of vehicle shock absorbing board, clamping mechanism is used for controllably constraining basic positioning subassembly shock absorbing board of vehicle, and limit its vertical degree of freedom, upper control arm limiting portion is fixed in basic positioning subassembly and is located in the position of leaning down, is used for forming position constraint to the upper control arm of installation, the utility model locates the shock absorbing board from below to above positioning device, makes the limiting portion for the constraint of upper control arm not to need frequently open or close, thereby will not appear the problem of inaccuracy of positioning due to the position error of spring elasticity attenuation and limiting portion itself, thereby guarantees the precision of control arm positioning angle and position, avoids appearing deflection torque, thereby guarantees vehicle driving stability and anti -roll performance.

Description

Technical Field

[0001] This utility model relates to a tooling for installing mechanical components, and more particularly to a positioning device for positioning the installation posture of an upper control arm. Background Technology

[0002] Double wishbone suspensions (including double A-arm suspensions) are widely used in vehicles due to their good vehicle stability and anti-roll performance, as well as their design flexibility. However, during the installation of a double wishbone suspension, the upper control arm needs to be precisely positioned to ensure accurate installation; otherwise, yaw torque will occur during vehicle operation, affecting driving stability.

[0003] In the prior art, the installation and positioning of the upper control arm is generally achieved by means of the vehicle's shock absorber (a component used to install the suspension and body) and positioning fixture. The positioning fixture extends the control arm limiting part of the lower part of the positioning fixture downward from the clearance hole (functional hole) set in the shock absorber. During the extension of the functional hole, a spring device is used to change it from a horizontal state to a vertical state, thereby reducing the cross-sectional area of ​​the positioning mechanism and enabling it to be positioned through the opening position of the front shock absorber.

[0004] The positioning fixture of this structure causes inaccurate positioning angles and positions of the control arm during use, resulting in deviations in its relative position and angle with the vehicle body. The control arm is in a state of deflection torque, causing a feeling of sticking during cornering. The primary cause of these problems is that after prolonged use, the opening angle of the positioning mechanism deviates due to the decrease in spring elasticity; furthermore, frequent opening and closing can lead to positional errors in the limiting part itself, thus affecting positioning accuracy.

[0005] Therefore, a positioning fixture is needed for the installation of the control arm to constrain the limiting part of the upper control arm without frequent opening or closing. This avoids the problem of inaccurate positioning caused by the decay of spring elasticity and the positional error of the limiting part itself, thus ensuring the accuracy of the control arm's positioning angle and position, avoiding deflection torque, and thus ensuring the vehicle's driving stability and anti-roll performance. Utility Model Content

[0006] In view of this, the present invention provides a positioning device for positioning the installation posture of the upper control arm. It is mainly used to constrain the limiting part of the upper control arm and does not require frequent opening or closing. Therefore, it avoids the problem of inaccurate positioning caused by the decay of spring elasticity and the positional error of the limiting part itself. This ensures the accuracy of the positioning angle and position of the control arm, avoids the occurrence of deflection torque, and thus ensures the vehicle driving stability and anti-roll performance.

[0007] The positioning device of this utility model for positioning the installation posture of the upper control arm includes a basic positioning component, a clamping mechanism and an upper control arm limiting part;

[0008] The basic positioning component is used to restrict the lateral degree of freedom of the vehicle's shock absorber plate at the lower part of the shock absorber plate. The clamping mechanism is used to controllably constrain the basic positioning component to the vehicle's shock absorber plate and restrict its vertical degree of freedom. The upper control arm limiting part is fixed to the basic positioning component and located at a lower position to form a position constraint on the upper control arm to be installed.

[0009] Furthermore, the basic positioning component includes a base and a first positioning part and a second positioning part located on the base. The first positioning part is used to extend from bottom to top into a first positioning port opened on the damping plate and is constrained in lateral freedom. The second positioning part is used to extend from bottom to top into a second positioning port on the damping plate and is constrained in lateral freedom. The first positioning port and the second positioning port are functional holes or laterally opened positioning ports on the damping plate.

[0010] Furthermore, the clamping mechanism includes a clamping head assembly with a clamping head and a clamping drive mechanism. The clamping head can be driven by the clamping drive mechanism to extend beyond the edge of the first positioning port in the circumferential direction, thereby restricting the vertical degree of freedom of the base to the damping plate through the edge, or it can be driven by the clamping drive mechanism to retract into the first positioning port in the circumferential direction.

[0011] Furthermore, the first positioning part is a ring-column structure, and the clamping head is located inside the ring-column structure and can be driven to extend out from the ring-column structure. Thus, the first positioning part extends beyond the edge of the first positioning opening in the circumferential direction and through this edge, it restricts the vertical degree of freedom of the base to the damping plate, or it can be retracted into the ring-column structure.

[0012] Furthermore, the clamping head assembly also includes a clamping head seat at the upper end for fixing the clamping head; the clamping drive mechanism includes a drive seat and a guide seat fixed to the base, the lower end of the clamping head seat is hinged to the drive seat, the guide seat is provided with a guide rail groove, and the clamping head seat slides in cooperation with the guide rail groove through a guide member; the drive seat can be driven to move the clamping head seat up and down, so that the guide member moves in the guide rail groove and drives the clamping head to complete the pitching action, thereby causing the clamping head to extend beyond the edge of the first positioning port in the circumferential direction and through the edge to restrict the vertical degree of freedom of the base to the damping plate, or to retract into the first positioning port.

[0013] Furthermore, the base includes a base and a base frame, the base frame being fixed to the base and enclosing a defined space; the first positioning part and the second positioning part are fixed to the upper part of the base frame, and the first positioning part of the annular column structure communicates with the space enclosed by the base frame to form a functional space; the guide seat, the drive seat and the clamping head assembly are located within this functional space.

[0014] Furthermore, the clamping drive mechanism also includes a drive bolt, which is rotatably mounted on the base with a single degree of freedom, and the drive bolt is threaded into the drive seat. Rotating the drive bolt causes the drive seat to move up and down.

[0015] Furthermore, it also includes a positioning seat, which is fixed to the upper part of the base frame, and the first positioning part and the second positioning part are fixed to the positioning seat;

[0016] When the clamping head extends beyond the edge of the first positioning opening in the circumferential direction, it clamps the damping plate together with the positioning seat, thereby restricting the vertical degree of freedom of the base to the damping plate.

[0017] Furthermore, the upper control arm includes a front upper control arm and a rear upper control arm. Correspondingly, the upper control arm limiting part includes a front upper control arm limiting part for constraining the position of the front upper control arm and a rear upper control arm limiting part for constraining the position of the rear upper control arm.

[0018] Furthermore, it also includes a limiting bracket, wherein the front upper control arm limiting part and the rear upper control arm limiting part are fixed to the basic positioning assembly by the limiting bracket, and the limiting bracket is configured to position the front upper control arm limiting part and the rear upper control arm limiting part in an orientation for constraining the position of the front upper control arm and the rear upper control arm.

[0019] The beneficial effects of this utility model are as follows: The positioning device of this utility model for positioning the installation posture of the upper control arm positions the positioning device from bottom to top on the shock absorber plate, so that the limiting part used to constrain the upper control arm does not need to be opened or closed frequently. This avoids the problem of inaccurate positioning caused by the decay of spring elasticity and the positional error of the limiting part itself, thereby ensuring the accuracy of the positioning angle and position of the control arm, avoiding the occurrence of deflection torque, and thus ensuring the vehicle's driving stability and anti-roll performance. Attached Figure Description

[0020] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0021] Figure 1 This is a perspective view of the present utility model;

[0022] Figure 2 This is a top view of the present invention;

[0023] Figure 3 for Figure 2 Sectional view along AA;

[0024] Figure 4 This is a top view of the present invention during use;

[0025] Figure 5 This is a bottom view of the present invention during use;

[0026] Reference numerals: 1. Basic positioning component; 2. Clamping mechanism; 3. Upper control arm limiting part; 101. First positioning part; 102. Second positioning part; 103. Positioning seat; 104. Base; 105. Base frame; 201. Clamping head; 202. Clamping head seat; 203. Guide seat; 204. Drive seat; 206. Hinge shaft; 207. Guide component; 208. Drive bolt; 209. Limiting component; 2031. Guide rail groove; 301. Front upper control arm limiting part; 302. Rear upper control arm limiting part; 303. Limiting part bracket; a. Positioning device; b. Shock-absorbing plate; b1. Edge of the first positioning port; b2. First positioning port; b3. Second positioning port; c. Front upper control arm; d. Rear upper control arm. Detailed Implementation

[0027] like Figure 1-5 As shown: The positioning device a for positioning the installation posture of the upper control arm in this embodiment includes a basic positioning component 1, a clamping mechanism 2 and an upper control arm limiting part 3;

[0028] The basic positioning component 1 is used to restrict the lateral degree of freedom of the vehicle's damping plate under the damping plate b. Restricting the lateral degree of freedom means relatively fixing it in the lateral direction to ensure the accuracy of lateral positioning. This can be achieved through existing mechanical positioning methods, such as a positioning pin structure with an insertion hole or a tenon-and-groove fit structure, which will not be elaborated here. The vehicle's damping plate b refers to the damping plate b used to install chassis components such as suspension, which is existing technology and will not be elaborated here. The clamping mechanism 2 is used to controllably constrain the basic positioning component 1 to the vehicle's damping plate b and restrict its vertical degree of freedom. Through the setting of the clamping mechanism 2, the vertical degree of freedom of the entire positioning device a can be limited (the orientation is determined according to the orientation of the damping plate b; the plane where the damping plate b is located is lateral, and the direction perpendicular to this plane is vertical), thereby ensuring the accuracy of positioning. The clamping mechanism 2 can adopt a conventional mechanical clamping structure, such as setting a separate jaw clamp, or using bolts passing through holes in the damping plate b. The clamping mechanism can be used to achieve simultaneous horizontal and vertical positioning, or the horizontal positioning pin can be replaced with a bolt. Electromagnetic adsorption onto the damping plate b can also be used. This provides a simple mechanical structure to restrict the freedom of movement of the basic positioning component 1. The upper control arm limiting part 3 is fixed to the basic positioning component 1 and located at a lower position, used to constrain the position of the upper control arm to be installed. The function of the upper control arm limiting part 3 is to position the upper control arm before installation to ensure installation accuracy. Therefore, stable high-precision positioning is sufficient. After the basic positioning component 1 and clamping mechanism 2 are in the set position, the upper control arm limiting part 3 is in the set position to position the upper control arm, avoiding the use of spring devices for closing and opening operations in existing technologies. The upper control arm limiting part 3 is a molded component, thus ensuring positioning accuracy. The positioning method can be a structure with a positioning groove on the upper control arm limiting part 3. During installation, the upper control arm is placed in the groove to achieve positioning. Figure 1 , Figure 2 As shown, it will not be elaborated further here.

[0029] In this embodiment, the basic positioning component 1 includes a base and a first positioning part 101 and a second positioning part 102 located on the base. The first positioning part 101 is used to extend upward into a first positioning opening b2 on the damping plate b and is constrained in lateral freedom. The second positioning part 102 is used to extend upward into a second positioning opening b3 on the damping plate b and is constrained in lateral freedom. The first positioning opening b2 and the second positioning opening b3 are functional holes on the damping plate b or laterally opened positioning openings. The shapes of the first positioning part 101 and the second positioning part 102 are not limited and can be any shape, but they need to cooperate with the first positioning opening b2 and the second positioning opening b3. Generally, the structure shown in the figure is adopted, that is, the first positioning part 101 is a positioning ring post and the second positioning part 102 is a positioning pin, thereby the first positioning opening b2 is a circular opening and the second positioning opening b3 is a circular opening. 3 is a pin hole, which will not be described in detail here; the two positioning parts extending into the positioning port form a restriction on the lateral degree of freedom (including the degree of freedom of movement and rotation); the first positioning port b2 and the second positioning port b3 are functional holes on the damping plate b or positioning ports opened later. Functional holes refer to holes with specific purposes that are originally opened on the damping plate b, such as mounting holes, etc. Of course, they can also be special positioning holes opened for positioning without affecting the strength of the damping plate b. All of these can achieve the purpose of this utility model, which will not be described in detail here; in this embodiment, the first positioning port b2 is a process hole opened on the damping plate b (a hole set for subsequent assembly process in the design stage), which mainly facilitates the installation and use of suspension components (i.e., components such as the upper control arm in the suspension system), while the positioning pin hole is a positioning mounting hole for installing suspension components. Both are functional holes, which will not be described in detail here.

[0030] In this embodiment, the clamping mechanism 2 includes a clamping head assembly with a clamping head 201 and a clamping drive mechanism. The clamping head 201 can be driven by the clamping drive mechanism to extend beyond the edge b1 of the first positioning port in the circumferential direction and restrict the vertical degree of freedom of the base to the damping plate b through the edge. Alternatively, it can be driven by the clamping drive mechanism to retract into the first positioning port b2 in the circumferential direction. As shown in the figure, in order to ensure the strength of the damping plate b after the first positioning port b2 is opened, the edge b1 of the first positioning port (functional hole) needs to be reinforced. This part has a higher height, which facilitates clamping when it cooperates with the clamping head 201.

[0031] In this embodiment, the first positioning part 101 is a ring-column structure, and the clamping head 201 is located inside the ring-column structure and can be driven to extend out from the ring-column structure. Thus, the first positioning part 101 extends beyond the edge b1 of the first positioning port in the circumferential direction and through this edge, it restricts the vertical degree of freedom of the base to the damping plate b, or it can be retracted into the ring-column structure. The overall structure is simple and compact, and the clamping head 201 can be easily extended after the first positioning part 101 is inserted into the first positioning port b2. There are various driving methods, such as setting the clamping head 201 as a lever structure, a rocker structure, etc., all of which can achieve retraction and extension, which will not be described in detail here.

[0032] In this embodiment, the clamping head assembly further includes a clamping head seat 202 at its upper end for fixing the clamping head 201; the clamping drive mechanism includes a drive seat 204 and a guide seat 203 fixed to the base, and the lower end of the clamping head seat 202 is hinged to the drive seat 204, as shown below. Figure 3 As shown, the hinge is achieved through the hinge shaft 206; the guide seat 203 is provided with a guide rail groove 2031, and the clamping head seat 202 slides in cooperation with the guide rail groove 2031 through a guide member 207; the drive seat 204 can be driven to move the clamping head seat 202 up and down, so that the guide member 207 moves in the guide rail groove 2031, and drives the clamping head 201 to complete the pitching action, thereby causing the clamping head 201 to extend beyond the edge b1 of the first positioning port in the circumferential direction and through this edge to restrict the vertical degree of freedom of the base to the damping plate b, or to retract into the first positioning port b2 (here, retracting into the first positioning port b2 means placing it within the range of the first positioning port b2, and other similar descriptions are the same as in this record); as Figure 3 As shown, the guide rail groove 2031 has a curved structure from bottom to top. When the guide member 207 is pushed upward along the trajectory of the guide rail groove 2031, it moves backward at the same time. The combined motion causes the clamping head seat 202 to swing back and forth around the hinge shaft 206, thereby driving the clamping head 201 (the clamping head 201 and the clamping head seat 202 are at a set angle, generally about ninety degrees) to complete the pitching action, thereby changing the lateral position of the end of the clamping head 201 and completing the clamping and retraction.

[0033] In this embodiment, the base includes a base 104 and a base frame 105. The base frame 105 is fixed to the base 104 and encloses a defined space. The first positioning part 101 and the second positioning part 102 are fixed to the upper part of the base frame 105, and the first positioning part 101 of the annular column structure communicates with the space enclosed by the base frame 105 to form a functional space. The guide seat 203, the drive seat 204, and the clamping head assembly are located within this functional space. Thus, when the positioning device a is not in use, the guide seat 203, the drive seat 204, and the clamping head assembly are all located within this space, and the overall structure is simple and compact. When in use, the clamping head 201 is driven to leave this space to complete the clamping action, which will not be described in detail here.

[0034] As shown in the figure, the base frame 105 includes several curved columns for enclosing the internal space and an annular top plate fixed on the columns, so that the components in the space can be observed, which is conducive to installation and maintenance.

[0035] In this embodiment, the clamping drive mechanism further includes a drive bolt 208. The drive bolt 208 is rotatably mounted on the base 104 with a single degree of freedom (i.e., it only has a reciprocating rotational degree of freedom and no other degree of movement freedom). The drive bolt 208 is threadedly engaged with the drive seat 204. Rotating the drive bolt 208 causes the drive seat 204 to move up and down. The single degree of freedom rotational engagement can be achieved through various mechanical structures. In this embodiment, the drive bolt 208 has an annular limiting protrusion. A limiting member 209 presses the annular protrusion onto the base 104 and provides a rotatable degree of freedom. This is a relatively common mechanical structure that restricts the degree of movement freedom while ensuring the degree of rotational freedom, and will not be described in detail here.

[0036] In this embodiment, a positioning seat 103 is also included. The positioning seat 103 is fixed to the upper part of the base frame 105. The first positioning part 101 and the second positioning part 102 are fixed to the positioning seat 103. As shown in the figure, the first positioning part 101 is integrally formed with the positioning seat 103, and the second positioning part 102 (positioning pin) is detachably disposed on the positioning seat 103. Further details will not be provided here.

[0037] When the clamping head 201 extends beyond the edge b1 of the first positioning port in the circumferential direction, it clamps the damping plate b together with the positioning seat 103, so that the base restricts the vertical degree of freedom of the damping plate b, and the structure is simple and practical.

[0038] In this embodiment, the upper control arm includes a front upper control arm c and a rear upper control arm d. Correspondingly, the upper control arm limiting part 3 includes a front upper control arm limiting part 301 for constraining the position of the front upper control arm c and a rear upper control arm limiting part 302 for constraining the position of the rear upper control arm d. The upper control arm includes a front upper control arm c and a rear upper control arm d. The upper control arm is a conventional technology in the prior art and will not be described in detail here.

[0039] In this embodiment, a limiting bracket 303 is also included. The front upper control arm limiting part 301 and the rear upper control arm limiting part 302 are fixed to the basic positioning component 1 by the limiting bracket 303. The limiting bracket 303 is configured to position the front upper control arm limiting part 301 and the rear upper control arm limiting part 302 in a position for constraining the position of the front upper control arm c and the rear upper control arm d. As shown in the figure, the annular top plate of the base frame 105 is integrally formed and extends radially outward to form a limiting bracket mounting seat. The limiting bracket 303 has a portion that overlaps with the mounting seat and is mounted on the mounting seat to ensure installation strength. At the same time, the limiting bracket 303 forms a fixed connection branch to fix the front upper control arm limiting part 301 and the rear upper control arm limiting part 302, which will not be described in detail here.

[0040] The front upper control arm limiting part 301 and the rear upper control arm limiting part 302 of this utility model are respectively provided with limiting grooves for limiting the front upper control arm c and the rear upper control arm d. Of course, in use, fasteners are also needed to fasten the corresponding control arms into the limiting grooves to ensure accurate positioning, which will not be described in detail here.

[0041] Unless otherwise specified, the fixed connection and fixed arrangement described in this utility model include all existing structural forms in the field of mechanical connection that can realize this method, and will not be described in detail here.

[0042] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions 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 solutions of this utility model without departing from the spirit and scope of the technical solutions 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 positioning device for positioning the installation posture of an upper control arm, characterized in that: Includes basic positioning components, clamping mechanism, and upper control arm limiting part; The basic positioning component is used to restrict the lateral degree of freedom of the vehicle's shock absorber plate at the lower part of the shock absorber plate. The clamping mechanism is used to controllably constrain the basic positioning component to the vehicle's shock absorber plate and restrict its vertical degree of freedom. The upper control arm limiting part is fixed to the basic positioning component and located at a lower position to form a position constraint on the upper control arm to be installed.

2. The positioning device for positioning the installation posture of the upper control arm according to claim 1, characterized in that: The basic positioning component includes a base and a first positioning part and a second positioning part located on the base. The first positioning part is used to extend from bottom to top into a first positioning port opened on the damping plate and is constrained in lateral freedom. The second positioning part is used to extend from bottom to top into a second positioning port on the damping plate and is constrained in lateral freedom. The first positioning port and the second positioning port are functional holes or laterally opened positioning ports on the damping plate.

3. The positioning device for positioning the installation posture of the upper control arm according to claim 2, characterized in that: The clamping mechanism includes a clamping head assembly with a clamping head and a clamping drive mechanism. The clamping head can be driven by the clamping drive mechanism to extend beyond the edge of the first positioning port in the circumferential direction, thereby restricting the vertical degree of freedom of the base to the damping plate through the edge, or it can be driven by the clamping drive mechanism to retract into the first positioning port in the circumferential direction.

4. The positioning device for positioning the installation posture of the upper control arm according to claim 3, characterized in that: The first positioning part is a ring-column structure. The clamping head is located inside the ring-column structure and can be driven to extend out of the ring-column structure. Thus, the first positioning part extends beyond the edge of the first positioning opening in the circumferential direction and restricts the vertical degree of freedom of the base to the damping plate through the edge, or it can be retracted into the ring-column structure.

5. The positioning device for positioning the installation posture of the upper control arm according to claim 4, characterized in that: The clamping head assembly further includes a clamping head seat at the upper end for fixing the clamping head; the clamping drive mechanism includes a drive seat and a guide seat fixed to the base, the lower end of the clamping head seat is hinged to the drive seat, the guide seat is provided with a guide rail groove, and the clamping head seat slides in cooperation with the guide rail groove through a guide member; the drive seat can be driven to move the clamping head seat up and down, so that the guide member moves in the guide rail groove and drives the clamping head to complete the pitching action, thereby causing the clamping head to extend beyond the edge of the first positioning port in the circumferential direction and through the edge to restrict the vertical degree of freedom of the base to the damping plate, or to retract into the first positioning port.

6. The positioning device for positioning the installation posture of the upper control arm according to claim 5, characterized in that: The base includes a base and a base frame, the base frame being fixed to the base and enclosing a defined space; the first positioning part and the second positioning part are fixed to the upper part of the base frame, and the first positioning part of the annular column structure communicates with the space enclosed by the base frame to form a functional space; the guide seat, the drive seat and the clamping head assembly are located within this functional space.

7. The positioning device for positioning the installation posture of the upper control arm according to claim 6, characterized in that: The clamping drive mechanism also includes a drive bolt, which is rotatably mounted on the base with a single degree of freedom, and the drive bolt is threaded into the drive seat. Rotating the drive bolt causes the drive seat to move up and down.

8. The positioning device for positioning the installation posture of the upper control arm according to claim 7, characterized in that: It also includes a positioning seat, which is fixed to the upper part of the base frame, and the first positioning part and the second positioning part are fixed to the positioning seat; When the clamping head extends beyond the edge of the first positioning opening in the circumferential direction, it clamps the damping plate together with the positioning seat, thereby restricting the vertical degree of freedom of the base to the damping plate.

9. The positioning device for positioning the installation posture of the upper control arm according to claim 1, characterized in that: The upper control arm includes a front upper control arm and a rear upper control arm. Correspondingly, the upper control arm limiting part includes a front upper control arm limiting part for constraining the position of the front upper control arm and a rear upper control arm limiting part for constraining the position of the rear upper control arm.

10. The positioning device for positioning the installation posture of the upper control arm according to claim 9, characterized in that: It also includes a limiting bracket, wherein the front upper control arm limiting part and the rear upper control arm limiting part are fixed to the basic positioning assembly by the limiting bracket, and the limiting bracket is configured to position the front upper control arm limiting part and the rear upper control arm limiting part in an orientation for constraining the position of the front upper control arm and the rear upper control arm.

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