A horizontal jack control handle

Abstract

This utility model relates to the field of horizontal jack manufacturing technology, and in particular to a horizontal jack operating handle, including an operating rod and a handle sleeved on the top of the operating rod and not rigidly fixed to the operating rod. The operating rod has both an upper axial limiting structure and a lower axial limiting structure, which limits the axial displacement of the handle while still retaining circumferential rotational freedom. This design, on the one hand, allows the handle to dissipate external force through circumferential rotation when it is accidentally bumped or accidentally activated, effectively preventing the return valve from opening and closing abnormally due to accidental activation, fundamentally eliminating the safety risk of heavy objects falling accidentally; on the other hand, the operator can obtain a comfortable force application angle without adjusting body posture when operating the handle, greatly improving the flexibility of operation.

Description

Technical Field

[0001] This utility model relates to the field of horizontal jack manufacturing technology, and in particular to a horizontal jack operating handle. Background Technology

[0002] As a commonly used piece of equipment in mechanical maintenance and heavy object lifting, the structural design of the operating handle of a horizontal jack directly affects the safety and reliability of operation.

[0003] Currently, in the industry, control handles generally use a rigid connection between the handle and the lever, completely locking the handle's circumferential rotational freedom. In practical applications, this exposes the following problems: 1) When the handle is subjected to unexpected forces (such as tool collisions in the work environment or accidental contact by personnel), the external force is directly transmitted to the return valve, forcibly actuating the valve core. For example, in jacking operations in confined spaces under vehicles, if the operator or maintenance tools accidentally collide with the handle, the return valve may open instantly, causing the jack load to suddenly drop, potentially leading to a falling object accident; 2) The handle can only apply force at a preset angle, and when the work space restricts the operator's position, the handle is often in a protruding position easily touched, significantly increasing the probability of accidental activation; 3) The fixed-angle force application method of the handle cannot adapt to the multi-angle operation requirements under complex working conditions, resulting in insufficient operational flexibility. Operators must adjust their bodies to unnatural postures to fit the fixed-angle handle. Therefore, it is urgent for those skilled in the art to solve these problems. Utility Model Content

[0004] The purpose of this invention is to provide a horizontal jack operating handle to solve the problems of accidental triggering of the return valve, limited operating angle, and insufficient control flexibility of the rigid fixed handle in the prior art.

[0005] This utility model relates to a horizontal jack operating handle, comprising:

[0006] The joystick is used to control the opening and closing of the return valve and the degree of opening.

[0007] The handle is fitted onto the top of the control lever and is not rigidly fixed to the control lever;

[0008] The joystick has both an upper axial limiting structure and a lower axial limiting structure; under the combined action of the upper and lower axial limiting structures, the axial displacement of the handle is limited, while retaining the circumferential rotational degree of freedom.

[0009] As a further improvement to the technical solution disclosed in this utility model, the upper axial limiting structure is preferably a fastener fixed to the top of the control lever.

[0010] As a further improvement to the technical solution disclosed in this utility model, the handle is formed with a mounting through hole for the control lever to pass through. The fastener uses the control lever as the mounting base, and its end outer diameter is larger than the diameter of the mounting through hole.

[0011] As a further improvement to the technical solution disclosed in this utility model, the fastener is preferably a screw, and it is connected to the control lever via a threaded pair. The control lever has an internal threaded hole that matches the screw.

[0012] As a further improvement to the technical solution disclosed in this utility model, a limiting groove is formed on the control lever at a distance set from its top. The lower axial limiting structure is preferably a stop ring that is fitted into the limiting groove.

[0013] As a further improvement to the technical solution disclosed in this utility model, the stop ring is preferably a retaining ring, and is fitted into the limiting groove by interference fit or clearance fit.

[0014] Of course, as another modified design of the above technical solution, the stop ring can also be selected as an elastic snap ring, and it can be clamped in the limiting groove by its own elastic restoring force.

[0015] As a further improvement to the technical solution disclosed in this utility model, the handle consists of a sleeve section and a hand grip section. The sleeve section is a cylindrical structure adapted to be inserted into the joystick. The hand grip section is triangular ring-shaped and is integrally formed with the sleeve section.

[0016] As a further improvement to the technical solution disclosed in this utility model, the distance between the lower axial limiting structure and the upper axial limiting structure is D, and the length of the sleeve segment is L, then 1mm≤DL≤3 mm.

[0017] As a further improvement to the technical solution disclosed in this utility model, the control lever is provided with an adapter structure to be associated with the return oil valve, and the valve core of the return oil valve is displaced by mechanical transmission.

[0018] In practical applications, the horizontal jack control handle disclosed in this utility model can achieve at least the following beneficial technical effects, specifically:

[0019] 1) Through the non-rigid fixed design of the handle and the control lever, when the handle is accidentally hit or accidentally touched, it will rotate in a circumferential direction to relieve the external force, which effectively avoids the abnormal opening and closing of the return valve due to accidental contact, and thus eliminates the danger of heavy objects falling accidentally.

[0020] 2) When operators are in a narrow space or in a special position, they do not need to adjust their body posture. They can obtain a comfortable force application angle by rotating the handle, which greatly improves the flexibility of operation.

[0021] 3) The embedded design of the limiting groove and the stop ring and the fasteners allow for the assembly and disassembly of the operating handle without complicated processes, and without changing the main structure of the jack. Furthermore, the integrated design of axial limiting and circumferential rotation does not result in additional space occupation, making it suitable for horizontal jacks with high requirements for structural compactness. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a three-dimensional schematic diagram of the horizontal jack control handle disclosed in this utility model.

[0024] Figure 2 yes Figure 1 The front view (with hidden lines visible).

[0025] Figure 3 yes Figure 2 AA sectional view.

[0026] Figure 4 yes Figure 3 A magnified view of part of I.

[0027] Figure 5 This is a three-dimensional schematic diagram of the control lever in the control handle of the horizontal jack disclosed in this utility model.

[0028] Figure 6 yes Figure 5 A magnified view of part II.

[0029] Figure 7 yes Figure 5 A magnified view of part III.

[0030] Figure 8 This is a three-dimensional schematic diagram of the handle in the horizontal jack operating handle disclosed in this utility model.

[0031] 1- Control lever; 11- Limit groove; 12- Square screw groove; 2- Handle; 21- Set section; 211- Mounting through hole; 22- Hand grip section; 3- Retaining ring; 4- Screw. Detailed Implementation

[0032] The present invention will be further described in detail below with reference to specific embodiments. Figures 1-4The diagram shows the structure of the horizontal jack control handle disclosed in this utility model. It can be seen that it mainly consists of a control lever 1, a handle 2, a retaining ring 3, and a screw 4. The bottom end of the control lever 1 is connected to the return oil valve, which is used to control the opening and closing of the return oil valve and its opening degree. Figure 8 As shown, the handle 2 consists of a sleeve section 21 and a hand grip section 22. The sleeve section 21 is a cylindrical structure adapted to the insertion of the control lever 1, and has a through hole 211 formed therein. The handle 2 is fitted onto the top of the control lever 1 via the sleeve section 21. The retaining ring 3 and the screw 4 are both mounted and fixed on the control lever 1, and together they form a double-end axial limit for the handle 2. At the same time, the handle 2 still retains circumferential rotational freedom.

[0033] like Figure 5 , Figure 6 As shown, at a set distance from its top, a limiting groove 11 is formed on the circumferential side wall of the control lever 1, and the retaining ring 3 is fitted into it by interference fit or clearance fit to form a lower axial limiting structure.

[0034] like Figures 1-4 As shown, screw 4 is screwed onto the top of control lever 1 by means of threaded joint, and the outer diameter of its end is larger than the diameter of mounting through hole 211 to form an upper axial limiting structure.

[0035] By adopting the above technical solution, on the one hand, the non-rigid fixed design of the handle 2 and the control lever 1 allows the handle 2 to freely rotate in the circumferential direction to relieve external force when it is accidentally bumped or accidentally touched, effectively avoiding the abnormal opening and closing of the return valve due to accidental contact, and thus eliminating the danger of heavy objects falling accidentally; on the other hand, when the operator is in a narrow space or special position, there is no need to adjust the body posture, and a comfortable force application angle can be obtained by rotating the handle 2, which greatly improves the flexibility of operation.

[0036] It is also important to note that the embedded design of the limiting groove 11 and the retaining ring 3, as well as the preferred choice of screw 4, allows for the assembly and disassembly of the operating handle without complex processes, and does not require any modification to the main structure of the jack. Furthermore, the integrated design of axial limiting and circumferential rotation does not result in additional space occupation, making it suitable for horizontal jacks with high requirements for structural compactness.

[0037] To ensure the reliability of the axial limiting of the handle 2, and to reserve a reasonable circumferential rotational space for it, as a further optimization of the above technical solution, such as Figure 4As shown, the distance between the lower axial limiting structure and the upper axial limiting structure is D, and the length of the sleeve segment 21 is L. Therefore, 1mm ≤ DL ≤ 3 mm. This effectively avoids the axial movement of the handle 2 due to excessive axial clearance, while preventing rotational jamming due to insufficient clearance. It ensures that the handle 2 can achieve stable double-end limiting through the retaining ring 3 and screw 4, and can also achieve 360° free rotation based on the non-rigid connection characteristics.

[0038] Furthermore, by Figure 8 As can be clearly seen in the diagram, the hand grip section 22 is in the shape of a triangular ring and is integrally formed with the sleeve section 21. In this way, the hand grip section 22 easily conforms to the curvature of the palm, making the grip comfortable and facilitating the application of force at multiple angles, which helps to improve the operational flexibility and reliability of the control handle.

[0039] like Figure 7 As shown, the bottom end of the control lever 1 is formed with a regular quadrilateral screw groove 12 to be associated with and adapted to the return valve, and to drive the valve core of the return valve to move through circumferential twisting action. In this way, the control lever 1 can be quickly connected with the return valve, and the torque can be stably transmitted to avoid slippage, thereby ensuring the accurate movement of the valve core.

[0040] Finally, it should be noted that, depending on the specific design requirements, the retaining ring 3 can also be replaced by a spring retainer. The difference is that the spring retainer utilizes its own elastic restoring force to engage within the limiting groove 211. During assembly, the spring retainer is first expanded so that its inner diameter is larger than the outer diameter of the control lever 1. After being fitted into the limiting groove 211, it relies on its elastic restoring force to tightly engage with the groove wall, thus forming a stable axial limiting structure. Compared to the interference fit of the traditional retaining ring 3, the elastic clamping of the spring retainer is easier to operate and helps improve assembly efficiency. Furthermore, when the handle 2 is subjected to axial impact, the spring retainer can absorb energy through its own slight deformation, which can reduce the amount of handle displacement caused by vibration to a certain extent.

[0041] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A horizontal jack operating handle, characterized in that, include: The joystick is used to control the opening and closing of the return valve and the degree of opening. A handle is fitted onto the top of the control lever and is not rigidly fixed to the control lever; The joystick has both an upper axial limiting structure and a lower axial limiting structure; under the combined action of the upper axial limiting structure and the lower axial limiting structure, the axial displacement of the handle is limited, while retaining the circumferential rotational degree of freedom.

2. The horizontal jack operating handle according to claim 1, characterized in that, The upper axial limiting structure is a fastener fixed to the top of the control lever.

3. The horizontal jack operating handle according to claim 2, characterized in that, The handle is formed with a mounting through hole for the control lever to pass through; the fastener is mounted on the control lever, and its end outer diameter is larger than the diameter of the mounting through hole.

4. The horizontal jack operating handle according to claim 3, characterized in that, The fastener is a screw, and it is connected to the control lever via a threaded pair; the control lever has an internal threaded hole that is adapted to the screw.

5. The horizontal jack operating handle according to claim 1, characterized in that, A limit groove is formed on the control lever at a distance set from its top; the lower axial limiting structure is a stop ring that is fitted into the limit groove.

6. The horizontal jack operating handle according to claim 5, characterized in that, The retaining ring is a retaining ring, and it is fitted into the limiting groove by interference fit or clearance fit.

7. The horizontal jack operating handle according to claim 5, characterized in that, The retaining ring is an elastic retaining spring, and it is secured in the limiting groove by its own elastic restoring force.

8. The horizontal jack operating handle according to claim 1, characterized in that, The handle consists of a sleeve section and a hand grip section; the sleeve section is a cylindrical structure adapted to be inserted into the joystick; the hand grip section is triangular ring-shaped and is integrally formed with the sleeve section.

9. The horizontal jack operating handle according to claim 8, characterized in that, The distance between the lower axial limiting structure and the upper axial limiting structure is D, and the length of the sleeve segment is L. Then 1mm≤DL≤3mm.

10. The horizontal jack operating handle according to any one of claims 1-9, characterized in that, The control lever is equipped with an adapter structure to be associated with the return valve, and is driven by mechanical transmission to displace the valve core of the return valve.

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