Axial torsion device for hanging sleeve

Abstract

The axial torsion device comprises a torsion bar, the top of the torsion bar is used for being connected with a torque wrench, the bottom of the torsion bar is used for being connected with the hanging sleeve, the bottom of the torsion bar is divided into at least two installation sections, a through hole is formed in the torsion bar in the vertical direction, and the bottom of the through hole is of a conical structure. A guide rod capable of moving up and down is arranged in the through hole, and the installation section can be forced to be opened outwards by pressing the guide rod downwards so as to be tightly attached to the inner wall of the hanging sleeve. The mounting device has the advantages that the bottom end of the torsion bar can be forced to be expanded outwards by pressing the guide rod downwards and then tightly attached to the inner wall of the mounting sleeve, then the torsion bar is rotated, the mounting sleeve can be locked, traditional radial screwing is changed into axial screwing, enough rotating space is guaranteed, and the whole mounting efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of mounting sleeves, in particular to an axial torque device for mounting sleeves. Background Art

[0002] New energy battery cases are typically equipped with mounting sleeves to facilitate better positioning and mounting on the vehicle's underbody. In practice, to reduce the overall tooling thickness between the battery case and the vehicle floor, some bolts connecting the battery case are placed in narrow, less accessible grooves on the vehicle's underbody. Due to the limited size of the grooves, the radial rotation angle of a traditional wrench when connecting the mounting sleeve to the bolts is limited, making tightening the mounting sleeve to the bolts time-consuming and labor-intensive, and sometimes even impossible. Utility Model Content

[0003] In view of this, the utility model provides an axial torque device for a mounting sleeve, which aims to facilitate and quickly install the mounting sleeve.

[0004] To achieve the above purpose, the technical solution of this utility model is as follows:

[0005] An axial torque device for a mounting sleeve, characterized in that it includes a torsion rod, the top of the torsion rod is used to connect a torque wrench, the bottom of the torsion rod is used to connect a mounting sleeve, the bottom of the torsion rod is divided into at least two mounting sections, a through hole is formed in the vertical direction inside the torsion rod, the bottom of the through hole is a conical structure, a guide rod that can move up and down is provided in the through hole, and pressing the guide rod downward can force the mounting section to expand outward and then fit tightly against the inner wall of the mounting sleeve.

[0006] By adopting the above structure, by pressing the guide rod downward, the bottom end of the torsion bar can be forced to expand outward, and then close to the inner wall of the mounting sleeve. Then, the torsion bar can be rotated to lock the mounting sleeve, changing the traditional radial tightening to axial tightening, ensuring sufficient rotation space and speeding up the overall assembly efficiency.

[0007] Preferably, a rotating housing is rotatably mounted on the top of the torsion bar. The top of the rotating housing is used to connect to a torque wrench. The rotating housing has two first guide holes symmetrically distributed around its circumference. The upper end of the guide rod protrudes beyond the top of the torsion bar and is horizontally penetrated by a first latch, with both ends of the first latch being positioned in the first guide holes. With this structure, the guide rod can be driven to move simply by rotating the rotating housing.

[0008] Preferably, a support portion extends circumferentially from the top of the torsion bar, and an annular groove is provided at the bottom of the rotating housing, into which the support portion is rotatably mounted. Both first guide holes are inclined arc-shaped holes. This structure further ensures that the first latch can be forced to move within the first guide holes.

[0009] Preferably, two second guide holes extending in the vertical direction are symmetrically distributed in the middle of the torsion bar, a second latch is horizontally passed through the middle of the guide bar, and both ends of the second latch are disposed in the second guide hole. The above structure can guide the up and down movement of the guide bar.

[0010] Preferably, an annular platform is provided vertically downward at the top of the torsion bar, the annular platform being aligned with the axis of the through hole. A spring is placed within the annular platform, and the guide rod is inserted within the spring. A limit portion extends circumferentially from the upper end of the guide rod, and the top of the spring abuts against the lower end of the limit portion, continuously applying an upward thrust to the limit portion. This structure enables the guide rod to automatically reset upward.

[0011] Preferably, the bottom of the annular sink is higher than the top of the second guide hole. With the above structure, foreign matter is prevented from entering the annular sink through the second guide hole, thereby affecting the normal use of the spring.

[0012] Preferably, the lower end of the guide rod has a tapered structure adapted to the bottom end of the through hole. With the above structure, the guide rod can be more easily moved downward.

[0013] Preferably, the lower end of the torsion bar extends circumferentially to form a limited section, and the limited section is used to abut against the top of the mounting sleeve. The above structure can play a role of limiting support for the torsion bar.

[0014] As a preferred embodiment, the limiting section is arranged on the mounting section. The above structure can adapt to mounting sleeves of different sizes, ensuring that the limiting section always plays a role.

[0015] Preferably, each mounting section is provided with an external thread adapted to the inner wall of the mounting sleeve. The above structure can increase the friction coefficient between the mounting section and the mounting sleeve, thereby ensuring that the mounting sleeve can be driven to rotate when the torsion bar rotates.

[0016] Compared with the prior art, the beneficial effects of the present invention are:

[0017] 1. The axial torsion device for the mounting sleeve provided by the present invention is used. By setting a torsion bar and pressing the guide rod inside the torsion bar, the bottom of the torsion bar can be forced to expand outward and fit tightly against the inner wall of the mounting sleeve. Then, the torsion bar is rotated to lock the mounting sleeve. The traditional radial tightening method is changed to axial tightening, which ensures sufficient installation space and greatly speeds up the installation efficiency.

[0018] 2. The lower end of the torsion bar is deformed to tighten the connection with the mounting sleeve, and the wrench screwing position is extended outside the narrow groove where the mounting sleeve is located by virtue of the height of the torsion bar, thereby solving the problem of the inconvenience of directly screwing the sleeve in the groove. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the three-dimensional structure of the axial torque device for mounting the sleeve;

[0020] Figure 2 for Figure 1 A cross-sectional schematic diagram;

[0021] Figure 3 is a schematic cross-sectional view of the torsion bar 1;

[0022] Figure 4 is a schematic cross-sectional view of the rotating housing 3;

[0023] Figure 5 It is a cross-sectional schematic diagram of the axial torque device in actual use. DETAILED DESCRIPTION

[0024] The present invention will be further described below with reference to the embodiments and accompanying drawings.

[0025] like Figures 1 to 5 As shown, an axial torque device for mounting a sleeve includes a torsion bar 1. The top of the torsion bar 1 is used to connect to a torque wrench, and the bottom is used to connect to a mounting sleeve 7. The bottom of the torsion bar 1 is divided into at least two mounting segments 1a, each of which is arranged in a circular array, with a deformation gap between adjacent mounting segments 1a. In this embodiment, the bottom of the torsion bar 1 is evenly divided into four mounting segments 1a. A through hole 1b is formed vertically inside the torsion bar 1. The bottom of the through hole 1b has a tapered structure. A guide rod 2 is installed in the through hole 1b, which can move up and down. Pressing the guide rod 2 downward causes the mounting segments 1a to deform, thereby tightening the inner wall of the mounting sleeve 7.

[0026] After the lower end of the torsion bar 1 is inserted into the center hole of the mounting sleeve 7, the torsion bar 1 can extend upward, out of the narrow space for twisting. Pressing the guide rod 2 downward can force the four mounting segments 1a at the bottom of the torsion bar 1 to expand outward and adhere tightly to the inner wall of the mounting sleeve 7, forming a lock. Then, by turning the top of the torsion bar 1 with a torque wrench, the mounting sleeve 7 can be locked. The torsion bar 1 has a certain height. After its lower end is inserted into the center hole of the mounting sleeve 7, the torsion bar 1 can extend upward, out of the narrow space for twisting, making it easier to connect a wrench. Compared to traditional radial tightening, switching to axial tightening not only increases the operating space, but also greatly speeds up the overall installation efficiency.

[0027] like Figure 2 As shown, a rotating shell 3 is rotatably installed on the top of the torsion bar 1. A mounting groove 3c is formed on the top of the rotating shell 3 to cooperate with the torque wrench, and two first guide holes 3a are symmetrically distributed on the rotating shell 3. The upper end of the guide rod 2 protrudes beyond the top of the torsion bar 1, and a first pin 4 is horizontally passed through the upper end of the guide rod 2. Both ends of the first pin 4 are arranged in the first guide hole 3. With this design, the guide rod 2 can be driven to move together by rotating the rotating shell 3.

[0028] Specifically, such as Figure 3 and Figure 4 As shown, a support portion 1c extends circumferentially from the top of the torsion bar 1. An annular groove 3b is formed at the bottom of the rotating housing 3, and the support portion 1c is rotatably mounted within the annular groove 3b. This design allows the rotating housing 3 to rotate only in place about the support portion 1c. In this embodiment, both first guide holes 3a are designed as inclined arc-shaped holes, with the inclination direction arranged from the upper right to the lower left. With this design, when the rotating housing 3 rotates clockwise, the first latch 4 is forced toward the lower end of the first guide hole 3a by the rotational force, and the guide rod 2 moves downward. When the rotating housing 3 rotates counterclockwise, the first latch 4 is forced toward the upper end of the first guide hole 3a by the rotational force, and the guide rod 2 moves upward.

[0029] like Figure 2 As shown, two second guide holes 1d extending vertically are symmetrically distributed in the middle of the torsion bar 1. A second latch 5 is horizontally inserted through the middle of the guide rod 2, with both ends of the second latch 5 disposed within the second guide holes 1d. The second guide holes 1d and the second latch 5 guide the guide rod 2 as it slides up and down, ensuring stable up and down movement.

[0030] like Figure 2 and Figure 3As shown, the torsion bar 1 has an annular depression 1e formed vertically downward at the top, aligned with the axis of the through hole 1b. A spring 6 is placed within the annular depression 1e, and the guide rod 2 is inserted within the spring 6. A limit portion 2a extends circumferentially from the upper end of the guide rod 2. The top of the spring 6 abuts against the lower end of the limit portion 2a, continuously applying an upward thrust to the limit portion 2a. This design allows the guide rod 2 to be reset by the spring 6 when it is no longer necessary to move downward.

[0031] In this embodiment, the lowest position of the bottom of the annular sink 1e is higher than the top position of the second guide hole 1d, so as to prevent foreign matter from entering the annular sink 1e through the second guide hole 1d and affecting the normal use of the spring 6.

[0032] like Figure 2 As shown, in this embodiment, the lower end of the guide rod 2 has a tapered structure adapted to the bottom end of the through hole 1b, so as to ensure that the guide rod 2 moves downward more smoothly.

[0033] For example Figure 1 and Figure 5 As shown, a limiting segment 1f extends circumferentially from the lower end of the torsion bar 1. The limiting segment 1f is configured to abut against the top of the mounting sleeve 7, thereby providing a limiting support for the torsion bar 1. In this embodiment, the limiting segment 1f is formed on the mounting segment 1a. This design allows for the use of mounting sleeves 7 of varying sizes, ensuring that the limiting segment 1f remains functional.

[0034] When each mounting segment 1a is stretched outward and in close contact with the inner wall of the mounting sleeve 7, in order to ensure that the rotation of the torsion bar 1 can drive the rotation of the mounting sleeve 7, in this embodiment, the outer side of each mounting segment 1a is provided with an external thread adapted to the inner wall of the mounting sleeve 7, thereby ensuring a sufficiently large friction coefficient between each mounting segment 1a and the inner wall of the mounting sleeve 7.

[0035] In this embodiment, in addition to being assembled with the rotating shell 3 and the torsion bar 1 through the annular groove 3b and the support portion 1c, the rotating shell 3 and the top of the torsion bar 1 can also be assembled through threads. In this case, the first guide hole 3a is designed to have the same shape as the cross-section of the first pin 4. When the rotating shell 3 is rotated, the guide rod 2 rotates and slides up and down. In this case, the second guide hole 1d and the second pin 5 can be omitted, or the second guide hole 1d can be designed to be spiral.

[0036] In combination with the above structure, the specific method of using the axial torque device for mounting the sleeve is as follows:

[0037] When the mounting sleeve 7 needs to be tightened, the rotating housing 3 is rotated clockwise with a torque wrench. The first guide hole 3a rotates clockwise accordingly, forcing the first latch to move downward along the first guide hole 3a. At this time, the guide rod 2 also moves vertically downward. The tapered structure at the bottom of the guide rod 2 radially presses the bottom of the through hole 1b, eventually forcing each mounting segment 1a to expand and mate with the inner wall of the mounting sleeve 7. The limiting segment 1f then abuts against the top of the mounting sleeve 7. The torque wrench is then rotated clockwise again to tighten the mounting sleeve 7. When tightening is complete and the torque device needs to be removed, it can be easily removed by simply turning the torque wrench counterclockwise due to the rated reset force applied by the spring 6.

[0038] This design replaces traditional radial rotation with axial rotation, ensuring sufficient tooling space while greatly speeding up installation efficiency.

[0039] Finally, it should be noted that the above description is only a preferred embodiment of the present invention. Under the guidance of the present invention, ordinary technicians in this field can make various similar expressions without violating the purpose and claims of the present invention. Such changes fall within the scope of protection of the present invention.

Claims

1. An axial torque device for mounting a sleeve, characterized in that: The invention comprises a torsion bar (1), wherein the top of the torsion bar (1) is used to connect a torque wrench, and the bottom of the torsion bar (1) is used to connect a mounting sleeve. The bottom of the torsion bar (1) is divided into at least two mounting sections (1a). A through hole (1b) is formed vertically inside the torsion bar (1). The bottom of the through hole (1b) is in a conical structure. A guide rod (2) that can move up and down is provided in the through hole (1b). Pressing the guide rod (2) downward can force the mounting section (1a) to expand outward and then to be in close contact with the inner wall of the mounting sleeve.

2. The axial torque device for mounting a sleeve according to claim 1, characterized in that: A rotating shell (3) is rotatably mounted on the top of the torsion bar (1); the top of the rotating shell (3) is used to connect a torque wrench; and the rotating shell (3) has two first guide holes (3a) symmetrically distributed in the circumferential direction; The upper end of the guide rod (2) protrudes beyond the top of the torsion rod (1), and a first latch (4) is horizontally passed through the upper end of the guide rod (2), and both ends of the first latch (4) are arranged in the first guide hole (3a).

3. The axial torque device for mounting a sleeve according to claim 2, characterized in that: A support portion (1c) is circumferentially extended from the top of the torsion bar (1), an annular groove (3b) is provided at the bottom of the rotating shell (3), and the support portion (1c) is rotatably mounted in the annular groove (3b); The two first guide holes (3a) are both obliquely arranged arc-shaped holes.

4. The axial torque device for mounting a sleeve according to claim 1, characterized in that: Two second guide holes (1d) extending in the vertical direction are symmetrically distributed in the middle of the torsion bar (1), a second latch (5) is horizontally passed through the middle of the guide rod (2), and both ends of the second latch (5) are arranged in the second guide hole (1d).

5. The axial torque device for mounting a sleeve according to claim 4, characterized in that: An annular sink (1e) is vertically downwardly provided on the top of the torsion bar (1), and the annular sink (1e) is aligned with the axis of the through hole (1b). A spring (6) is placed in the annular sink (1e), and the guide rod (2) is inserted into the spring (6). The upper end of the guide rod (2) extends circumferentially to form a limiting portion (2a), and the top of the spring (6) abuts against the lower end of the limiting portion (2a) and continuously applies an upward thrust to the limiting portion (2a).

6. The axial torque device for mounting a sleeve according to claim 5, characterized in that: The bottom position of the annular sink (1e) is higher than the top position of the second guide hole (1d).

7. The axial torque device for mounting a sleeve according to claim 1, characterized in that: The lower end of the guide rod (2) has a tapered structure adapted to the bottom end of the through hole (1b).

8. The axial torque device for mounting a sleeve according to claim 1, characterized in that: The lower end of the torsion bar (1) extends in the circumferential direction to form a limited segment (1f), and the limited segment (1f) is used to abut against the top of the mounting sleeve.

9. The axial torque device for mounting a sleeve according to claim 8, characterized in that: The limiting section (1f) is arranged on the installation section (1a).

10. The axial torque device for mounting a sleeve according to claim 1, characterized in that: The outer side of each installation section (1a) is provided with an external thread adapted to the inner wall of the mounting sleeve.

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