A bumper coating jig

CN224846216UActive Publication Date: 2026-10-13GUANGZHOU AUTOMIBILE GRP MOTOR
View PDF 0 Cites 0 Cited by

Patent Information

Application Number
CN202522072974.7
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-09-26
Publication Date
2026-10-13
Estimated Expiration
2035-09-26

AI Technical Summary

Technical Problem

[0003]本实用新型为克服上述现有技术中保险杠涂装治具切换车型时操作繁琐,效率较低的缺陷,提供一种保险杠涂装治具,提升切换速度,提升工作效率

Benefits of technology

第一连接件和伸缩件均是可调节安装,且安装调节方向相互垂直,支撑杆也是可调节安装在伸缩件的伸缩端上,使得支撑杆至少可以在2个方向上进行位置的自由调节,进而可以同时安装多个车型的多组支撑杆在支架上,再通过各伸缩件的伸缩作用,使得各组支撑杆可以快速伸出与缩回,进而实现快速切换不同车型,提升工作效率。

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN224846216U_ABST
    Figure CN224846216U_ABST
Patent Text Reader

Abstract

The utility model relates to the technical field of coating auxiliary jig, more specifically, relate to a bumper coating jig, include: support, cross bar, vertical rod, first connecting piece, telescopic part, support rod, first connecting piece is adjustable installation along cross bar or vertical rod axial respectively, the telescopic end movement direction of telescopic part is perpendicular with cross bar or vertical rod axial, and telescopic part and support rod are grouped according to the car type, and at least 2 groups of support rods are equipped on the support. First connecting piece and telescopic part are adjustable installation, and the installation adjustment direction is perpendicular to each other, and the support rod is also adjustable installation on the telescopic end of telescopic part, so that the support rod can be freely adjusted in position in at least 2 directions, and then a plurality of groups of support rods of multiple vehicle types can be installed on the support simultaneously, and then the telescopic effect of each telescopic part makes each group of support rods can quickly extend and retract, and then the different vehicle types of quick switching are realized, and the work efficiency is improved.
Need to check novelty before this filing date? Find Prior Art

Description

Technical Field

[0001] This utility model relates to the field of coating auxiliary fixture technology, and more specifically, to a bumper coating fixture. Background Technology

[0002] In the painting process of car bumpers, the bumpers need to be placed on painting fixtures to enter the painting line. The painting fixtures support and position the bumpers, ensuring consistent painting. When changing car models, employees need to replace the bumper fixtures to meet the flexible production needs of multiple models. Existing bumper painting fixtures generally consist of a bottom bracket and support rods mounted on the bottom bracket. The support rods are detachably connected to the bottom bracket and can be adjusted vertically. While the overall structure is relatively simple, it presents several problems in use: 1. Fixture replacement efficiency is low when changing car models during production, as multiple employees need to disassemble and replace the support rods one by one, making the operation cumbersome and inefficient. 2. Reusing the original support rods is difficult when introducing new products, as the support rods' installation position is relatively fixed and can only be adjusted vertically, failing to meet the positional support requirements of the new car model's bumper. Utility Model Content

[0003] To overcome the shortcomings of the prior art where the bumper painting fixture is cumbersome and inefficient when switching vehicle models, this utility model provides a bumper painting fixture that improves the switching speed and work efficiency.

[0004] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is: a bumper painting fixture, comprising: a bracket, a plurality of horizontal and vertical bars respectively disposed on the bracket, a first connecting member respectively adjustablely mounted on the horizontal bar or the vertical bar, a telescopic member respectively adjustablely mounted on the first connecting member, and a support rod respectively adjustablely mounted on the telescopic end of the telescopic member. The first connecting member is adjustablely mounted along the axial direction of the horizontal bar or the vertical bar. The telescopic end of the telescopic member moves in a direction perpendicular to the axial direction of the horizontal bar or the vertical bar. The telescopic member and the support rod are grouped according to the vehicle model. The bracket is provided with at least two sets of the support rods.

[0005] The horizontal and vertical bars on the bracket are used to install support rods, which support the bumper. One side of the first connecting piece connects to the horizontal or vertical bar, and the other side is used to install the telescopic component. Both the connection between the first connecting piece and the horizontal or vertical bar, and between the first connecting piece and the telescopic component, are adjustable. When the first connecting piece is connected to the horizontal or vertical bar, it can be adjusted along the axial direction of the bar and then fixed. Similarly, the telescopic component can be adjusted relative to the first connecting piece along its axial direction. After installation, the telescopic end of the telescopic component is perpendicular to the axial direction of the horizontal or vertical bar. That is, when the telescopic component is installed on the horizontal bar, it is vertically positioned, and the telescopic end extends vertically. When the telescopic component is installed on the vertical bar, it is horizontally positioned, and the telescopic end extends horizontally. This allows the telescopic component to extend... During installation, the position of the support rod can be adjusted relative to the bracket in two mutually perpendicular directions, structurally meeting the installation requirements of different support points for multiple vehicle models. The support rod is also adjustablely mounted on the telescopic end of the telescopic component. The installation adjustment direction of the support rod is determined according to the actual situation; it can be the same as or perpendicular to the installation adjustment direction of the first connecting component, or the same as or perpendicular to the installation adjustment direction of the telescopic component, giving the support rod two or three mutually perpendicular adjustable directions, fully improving the adjustability of the support rod and meeting the support needs of multiple vehicle models. Furthermore, the telescopic components and support rods are grouped according to different vehicle models, with corresponding support rods for two or more vehicle models mounted on the bracket. During use, controlling the telescopic components of the corresponding group to retract or extend uniformly causes the corresponding support rods to retract or extend together, thereby achieving rapid vehicle model switching and improving work efficiency. The telescopic components are selected using linear motors, cylinders, or hydraulic cylinders, and the corresponding control unit is selected according to the actual situation to achieve unified control of the telescopic components in the same group.

[0006] Preferably, it further includes a first cylindrical member adjustablely mounted on the first connecting member, a second cylindrical member slidably connected to the first cylindrical member, the telescopic member being fixedly connected to the first cylindrical member, the second cylindrical member being mounted on the telescopic end of the telescopic member, the second cylindrical member being disposed at the axis of the first cylindrical member, and the support rod being adjustablely mounted on the second cylindrical member.

[0007] The telescopic component is indirectly mounted on the first connecting component via the first cylindrical component. The first cylindrical component is adjustablely mounted on the first connecting component along the moving direction of the telescopic end of the telescopic component. The second cylindrical component is fixedly connected to the telescopic end of the telescopic component. The support rod is adjustablely mounted on the second cylindrical component. The first cylindrical component is provided to facilitate the installation of the telescopic component and to guide the telescopic movement of the first cylindrical component.

[0008] Preferably, the first cylindrical member and the second cylindrical member are fixed radially relative to each other.

[0009] The first cylindrical member restricts the second cylindrical member from rotating circumferentially, that is, rotating around the axis, to ensure that the support position of the support rod does not shift.

[0010] Preferably, the crossbar, the vertical bar, the first cylindrical member, and the second cylindrical member are all made of lean tubes with protrusions on their outer surfaces for connection, and the first connector is a lean tube cross joint.

[0011] Lean pipe, also known as conduit, has axial protrusions on its outer surface for connection. It is a commonly used support pipe material in existing technology. The first connector is a lean pipe cross joint that matches the lean pipe. The connecting grooves on both sides of this type of joint are perpendicular to each other, which can realize the vertical connection of two lean pipes. Moreover, the position can be adjusted along the protrusions of the lean pipe during installation.

[0012] Preferably, it further includes a second connector that is adjustablely mounted on the second cylindrical member. The second connector has the same structure as the first connector. The end of the support rod is provided with a mounting protrusion that matches the second connector. The support rod is mounted on the second connector through the mounting protrusion.

[0013] A second connector, also a lean pipe cross joint, is provided to facilitate the installation of the support rod. The shape of the mounting convex strip at the end of the support rod is consistent with the shape of the convex strip on the outer side of the lean pipe, thereby connecting the second connector to the support rod.

[0014] Preferably, the mounting protrusion is elongated, and the support rod is adjustablely mounted on the second connector, with the adjustment direction perpendicular to both the installation adjustment direction of the telescopic component and the installation adjustment direction of the first connector.

[0015] By appropriately lengthening the installation protrusion and setting a reasonable installation position, and cooperating with the adjustable installation of the first connector and the telescopic component, the installation position of the support component can be adjusted in three mutually perpendicular directions.

[0016] Preferably, the telescopic component is a cylinder.

[0017] Preferably, it further includes an air pipe connector connected to the bracket, a cylinder reversing control valve connected to the air pipe connector, and an air pipe distributor connected to the cylinder reversing control valve, wherein the air pipe connector is used to connect to an external air source.

[0018] The air pipe connector is used to connect to an external air source. The external air source passes through the air pipe connector, the cylinder reversing control valve and the air pipe distributor in sequence, and then enters each cylinder to drive it. The extension and retraction of the cylinder is controlled by the cylinder reversing control valve.

[0019] Preferably, the cylinder reversing control valve is a manual valve or a solenoid valve.

[0020] Setting the cylinder reversing control valve as a manual valve is more cost-effective, while setting it as a solenoid valve requires it to work in conjunction with a PLC or other control unit.

[0021] Preferably, the first cylindrical member is threadedly connected to the telescopic member, and the second cylindrical member is threadedly connected to the telescopic end of the telescopic member.

[0022] The first cylindrical component uses a basic aluminum tube from lean tubing, with a nut embedded in the end to fix the nut relative to the first cylindrical component, and then connects to the telescopic component using the nut; the second cylindrical component uses a reinforced aluminum tube from lean tubing, with a cylindrical structure at the axis of the reinforced aluminum tube, and an internal thread on the cylindrical structure, which is then threaded to the telescopic end of the telescopic component.

[0023] Compared with the prior art, the beneficial effects of this utility model are: Both the first connecting piece and the telescopic piece are adjustable and the installation and adjustment directions are perpendicular to each other. The support rod is also adjustable and installed on the telescopic end of the telescopic piece, so that the position of the support rod can be freely adjusted in at least two directions. This allows multiple sets of support rods for multiple vehicle models to be installed on the bracket at the same time. Through the telescopic action of each telescopic piece, each set of support rods can be quickly extended and retracted, thereby realizing quick switching between different vehicle models and improving work efficiency. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall structure of a bumper painting fixture according to this utility model; Figure 2 This is a schematic diagram of the installation structure of the first and second cylindrical parts of a bumper painting fixture according to this utility model; Figure 3 This is a top view structural diagram of a bumper painting fixture according to this utility model.

[0025] In the diagram: 1. Bracket; 2. Horizontal bar; 3. Vertical bar; 4. First connecting piece; 5. Telescopic piece; 6. Support rod; 7. First cylindrical piece; 8. Second cylindrical piece; 9. Second connecting piece; 10. Mounting protrusion; 11. Air pipe connector; 12. Cylinder reversing control valve; 13. Air pipe distributor. Detailed Implementation

[0026] The accompanying drawings are for illustrative purposes only and should not be construed as limiting this patent. To better illustrate this embodiment, some components in the drawings may be omitted, enlarged, or reduced, and do not represent the actual dimensions of the product. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings. The positional relationships described in the drawings are for illustrative purposes only and should not be construed as limiting this patent.

[0027] In the accompanying drawings of this utility model, the same or similar reference numerals correspond to the same or similar components. In the description of this utility model, it should be understood that if terms such as "upper," "lower," "left," "right," "long," and "short" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, they are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe positional relationships in the drawings are only for illustrative purposes and should not be construed as limiting this patent. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0028] The technical solution of this utility model will be further described in detail below through specific embodiments and with reference to the accompanying drawings: Example 1 like Figure 1 As shown, a bumper painting fixture includes: a bracket 1, multiple horizontal bars 2 and vertical bars 3 respectively mounted on the bracket 1, first connecting members 4 respectively adjustablely mounted on the horizontal bars 2 or vertical bars 3, telescopic members 5 respectively adjustablely mounted on the first connecting members 4, and support rods 6 respectively adjustablely mounted on the telescopic ends of the telescopic members 5. The first connecting members 4 are adjustablely mounted along the axial direction of the horizontal bars 2 or vertical bars 3. The telescopic end of the telescopic member 5 moves in a direction perpendicular to the axial direction of the horizontal bars 2 or vertical bars 3. The telescopic members 5 and support rods 6 are grouped according to the vehicle model. The bracket 1 is provided with at least two sets of support rods 6.

[0029] The horizontal bar 2 and vertical bar 3 on the bracket 1 are used to install the support rod 6, which supports the bumper. One side of the first connecting piece 4 connects to the horizontal bar 2 or vertical bar 3, and the other side is used to install the telescopic component 5. The connections between the first connecting piece 4 and the horizontal bar 2 or vertical bar 3, and between the first connecting piece 4 and the telescopic component 5, are adjustable. When the first connecting piece 4 is connected to the horizontal bar 2 or vertical bar 3, it can be adjusted along the axial direction of the horizontal bar 2 or vertical bar 3 and then fixed after reaching a suitable position. Similarly, the telescopic component 5 can be adjusted relative to the first connecting piece 4 along its axial direction. After installation, the telescopic component 5's telescopic end extends perpendicularly to the axial direction of the installed horizontal bar 2 or vertical bar 3. That is, when the telescopic component 5 is installed on the horizontal bar 2, it is vertically positioned, and the telescopic end extends vertically. When the telescopic component 5 is installed on the vertical bar 3, it is horizontally positioned, and the telescopic end extends horizontally. This design allows the telescopic component 5 to be adjusted relative to the bracket 1 in two mutually perpendicular directions during installation, structurally meeting the installation requirements of different support points for various vehicle models. The support rod 6 is also adjustablely mounted on the telescopic end of the telescopic component 5. The installation adjustment direction of the support rod 6 is determined according to actual needs; it can be the same as or perpendicular to the installation adjustment direction of the first connecting component 4, or the same as or perpendicular to the installation adjustment direction of the telescopic component 5. This gives the support rod 6 two or three mutually perpendicular adjustable directions, significantly improving its adjustability and meeting the support needs of multiple vehicle models. Furthermore, the telescopic component 5 and support rod 6 are grouped according to different vehicle models. With corresponding support rods 6 for two or more vehicle models, they are all mounted on the bracket 1. During use, controlling the telescopic components 5 of the corresponding group to retract or extend uniformly causes the corresponding support rods 6 to retract or extend together, thus achieving rapid vehicle model switching and improving work efficiency. The telescopic component 5 is equipped with a linear motor, pneumatic cylinder, or hydraulic cylinder, and the corresponding control unit is selected based on actual needs to achieve unified control of the telescopic components 5 within the same group.

[0030] The beneficial effects of this embodiment are as follows: the first connecting member 4 and the telescopic member 5 are both adjustable and the installation and adjustment directions are perpendicular to each other. The support rod 6 is also adjustable and installed on the telescopic end of the telescopic member 5, so that the position of the support rod 6 can be freely adjusted in at least two directions. Thus, multiple sets of support rods 6 for multiple vehicle models can be installed on the bracket 1 at the same time. Through the telescopic action of each telescopic member 5, each set of support rods 6 can be quickly extended and retracted, thereby realizing the rapid switching of different vehicle models and improving work efficiency.

[0031] Example 2 This embodiment further defines the features of Embodiment 1, and its difference from Embodiment 1 lies in: like Figure 1-2As shown, it also includes a first cylindrical member 7 adjustablely mounted on the first connecting member 4, a second cylindrical member 8 slidably connected to the first cylindrical member 7, a telescopic member 5 fixedly connected to the first cylindrical member 7, the second cylindrical member 8 mounted on the telescopic end of the telescopic member 5, the second cylindrical member 8 being located at the axis of the first cylindrical member 7, and a support rod 6 adjustablely mounted on the second cylindrical member 8. The first cylindrical member 7 and the second cylindrical member 8 are radially fixed relative to each other. The horizontal bar 2, the vertical bar 3, the first cylindrical member 7, and the second cylindrical member 8 are all made of lean pipe with protrusions on their outer surfaces for connection. The first connecting member 4 uses a lean pipe cross joint. It also includes a second connecting member 9 adjustablely mounted on the second cylindrical member 8. The second connecting member 9 has the same structure as the first connecting member 4. The end of the support rod 6 is provided with a mounting protrusion 10 that matches the second connecting member 9. The support rod 6 is mounted on the second connecting member 9 through the mounting protrusion 10. The mounting convex strip 10 is long and narrow, and the support rod 6 is adjustablely mounted on the second connector 9. The adjustment direction is perpendicular to the installation adjustment direction of the telescopic component 5 and the installation adjustment direction of the first connector 4.

[0032] The telescopic component 5 is indirectly mounted on the first connecting component 4 via the first cylindrical component 7. The first cylindrical component 7 is adjustablely mounted on the first connecting component 4 along the moving direction of the telescopic end of the telescopic component 5. The second cylindrical component 8 is fixedly connected to the telescopic end of the telescopic component 5. The support rod 6 is adjustablely mounted on the second cylindrical component 8. The first cylindrical component 7 is provided to facilitate the installation of the telescopic component 5 and to guide the telescopic movement of the first cylindrical component 7. The first cylindrical component 7 restricts the circumferential rotation of the second cylindrical component 8, i.e., rotation around the axis, to ensure that the support position of the support rod 6 does not shift. The lean pipe, also known as a conduit, has axial protrusions on its outer surface for connection. It is a commonly used pipe material for the support 1 in existing technology. The first connecting component 4 is a lean pipe cross joint that matches the lean pipe. The connecting grooves on both sides of this type of joint are perpendicular to each other, which can realize the vertical connection of two lean pipes. Moreover, the position can be adjusted along the protrusions of the lean pipe during installation. A second connector 9, also a lean pipe cross joint, is provided to facilitate the installation of the support rod 6. The shape of the mounting protrusion 10 at the end of the support rod 6 is consistent with the shape of the protrusion on the outer side of the lean pipe, thus connecting the second connector 9 to the support rod 6. By appropriately lengthening the mounting protrusion 10 and setting a reasonable installation position, in conjunction with the adjustable installation of the first connector 4 and the telescopic component 5, the support can be adjusted in three mutually perpendicular directions.

[0033] The remaining features and working principles of this embodiment are the same as those of Embodiment 1.

[0034] Example 3 Based on Example 1 or Example 2, Example 1 or Example 2 are further defined, with the following differences: like Figure 1-3As shown, the telescopic component 5 is a cylinder. It also includes an air pipe connector 11 connected to the bracket 1, a cylinder reversing control valve 12 connected to the air pipe connector 11, and an air pipe distributor 13 connected to the cylinder reversing control valve 12. The air pipe connector 11 is used to connect to an external air source. The cylinder reversing control valve 12 is a manual valve or a solenoid valve. The first cylindrical component 7 is threadedly connected to the telescopic component 5, and the second cylindrical component 8 is threadedly connected to the telescopic end of the telescopic component 5.

[0035] The air pipe connector 11 is used to connect to an external air source. The external air source passes sequentially through the air pipe connector 11, the cylinder reversing control valve 12, and the air pipe distributor 13, and then enters each cylinder for driving. The cylinder reversing control valve 12 controls the extension and retraction of the cylinders. Setting the cylinder reversing control valve 12 as a manual valve saves costs; setting it as a solenoid valve allows it to work in conjunction with a PLC or other control unit. Figure 2 As shown, the first cylindrical component 7 is a basic aluminum tube from a lean pipe system, with a nut embedded in its end to fix it relative to the first cylindrical component 7. The nut is then used to connect it to the telescopic component 5. The second cylindrical component 8 is a reinforced aluminum tube from a lean pipe system, with a cylindrical structure at its axial center. An internal thread is provided on this cylindrical structure, which is then threaded to the telescopic end of the telescopic component 5. During installation, the second cylindrical component 8 is first connected to the telescopic rod of the cylinder, and then the first cylindrical component 7 is connected. Since the telescopic rod of the cylinder can rotate relative to the cylinder body, it will not affect the installation and connection of the first cylindrical component 7.

[0036] Furthermore, to achieve more precise position adjustment, positioning marks corresponding to different vehicle models are set on the horizontal bar 2, vertical bar 3, first cylindrical component 7, second cylindrical component 8 and mounting protrusion 10, and / or scales are set.

[0037] Figure 1 In the middle, the air pipe distributor 13 is connected to each cylinder, i.e., the telescopic component 5, through an external air pipe. Only part of the air pipe is shown in the figure for illustration.

[0038] The remaining working principles and processes of this embodiment are the same as those of Embodiment 1 or Embodiment 2.

[0039] In the specific implementation of the above embodiments, the technical features can be combined in any non-contradictory way. For the sake of brevity, not all possible combinations of the above technical features are described. However, as long as the combination of these technical features is not contradictory, it should be considered to be within the scope of this specification.

[0040] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating this utility model, and are not intended to limit the implementation of this utility model. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A bumper painting fixture, characterized in that, include: The bracket (1), multiple horizontal bars (2) and vertical bars (3) respectively disposed on the bracket (1), first connecting parts (4) respectively adjustablely mounted on the horizontal bars (2) or the vertical bars (3), telescopic parts (5) respectively adjustablely mounted on the first connecting parts (4), and support rods (6) respectively adjustablely mounted on the telescopic ends of the telescopic parts (5). The first connecting parts (4) are adjustablely mounted along the axial direction of the horizontal bars (2) or the vertical bars (3). The telescopic end of the telescopic part (5) moves in a direction perpendicular to the axial direction of the horizontal bars (2) or the vertical bars (3). The telescopic parts (5) and the support rods (6) are grouped according to the vehicle model. The bracket (1) is provided with at least 2 sets of the support rods (6).

2. The bumper painting fixture according to claim 1, characterized in that: It also includes a first cylindrical member (7) that is adjustablely mounted on the first connecting member (4), a second cylindrical member (8) that is slidably connected to the first cylindrical member (7), the telescopic member (5) that is fixedly connected to the first cylindrical member (7), the second cylindrical member (8) that is mounted on the telescopic end of the telescopic member (5), the second cylindrical member (8) that is located at the axis of the first cylindrical member (7), and the support rod (6) that is adjustablely mounted on the second cylindrical member (8).

3. The bumper painting fixture according to claim 2, characterized in that: The first cylindrical member (7) and the second cylindrical member (8) are fixed radially relative to each other.

4. A bumper painting fixture according to claim 3, characterized in that: The horizontal bar (2), the vertical bar (3), the first cylindrical member (7) and the second cylindrical member (8) are all made of lean tubes with protrusions on the outer side for connection, and the first connector (4) is a lean tube cross joint.

5. A bumper painting fixture according to claim 4, characterized in that: It also includes a second connector (9) that can be adjusted and mounted on the second cylindrical member (8). The second connector (9) has the same structure as the first connector (4). The end of the support rod (6) is provided with a mounting protrusion (10) that matches the second connector (9). The support rod (6) is mounted on the second connector (9) through the mounting protrusion (10).

6. A bumper painting fixture according to claim 5, characterized in that: The mounting protrusion (10) is long and narrow. The support rod (6) is adjustable and mounted on the second connector (9). The adjustment direction is perpendicular to the installation adjustment direction of the telescopic member (5) and the installation adjustment direction of the first connector (4).

7. A bumper painting fixture according to claim 2, characterized in that: The telescopic component (5) is a cylinder.

8. A bumper painting fixture according to claim 7, characterized in that: It also includes an air pipe connector (11) connected to the bracket (1), a cylinder reversing control valve (12) connected to the air pipe connector (11), and an air pipe distributor (13) connected to the cylinder reversing control valve (12). The air pipe connector (11) is used to connect to an external air source.

9. A bumper painting fixture according to claim 8, characterized in that: The cylinder reversing control valve (12) is a manual valve or a solenoid valve.

10. A bumper painting fixture according to claim 7, characterized in that: The first cylindrical member (7) is threadedly connected to the telescopic member (5), and the second cylindrical member (8) is threadedly connected to the telescopic end of the telescopic member (5).