Lifting table leg locking piece

Abstract

The utility model provides a lifting table leg locking piece which comprises an outer leg and an inner leg arranged in the outer leg in a sleeved mode, and one end of the outer leg is provided with a locking piece body used for adjusting the lifting height of the inner leg. The locking piece is provided with a center sleeve body for the inner leg to penetrate through, one end of the center sleeve body is provided with a circular bead capable of being carried on the top end face of the outer leg, the side wall of the center sleeve body is provided with an opening and closing portion in the height direction of the center sleeve body, corresponding nut petals are arranged on the two sides close to the opening and closing portion respectively, a nut is screwed on the two nut petals, and the nut is connected with the inner leg through the nut petals. And the central sleeve body can be tightened or loosened through the opening and closing part. The shoulder is arranged at the end of the outer leg, the inner leg is fixed in the outer leg through the central sleeve body of the opening and closing part, the inner leg can be tightened or loosened in the outer leg by tightening or loosening the nut petals through the nut, and then lifting adjustment is achieved.

Description

Technical Field

[0001] This utility model relates to a table leg connector, and more particularly to a locking component suitable for adjusting the height of lifting table legs. Background Technology

[0002] Existing height-adjustable desks consist of outer legs connecting to the base and inner legs connecting to the desk body, with the inner legs fitted inside the outer legs. To meet the varying height adjustment requirements of the desks, existing technologies employ various locking structures at the mating ends or within the mating stroke of the outer and inner legs: such as the common bolt-and-positioning hole connection, the spring-loaded pin-and-positioning hole connection, etc.; and also those compatible with intelligent hydraulic lifting rods, mechanical lifting screws, etc. These existing locking structures effectively achieve height adjustment and locking functions. However, for the technical solution proposed in this invention, the existing locking structures are relatively expensive and structurally complex. Utility Model Content

[0003] To address the aforementioned technical problems, this utility model provides a low-cost, simple-structured locking component for lifting table legs.

[0004] The technical solution provided by this utility model is:

[0005] A locking mechanism for a height-adjustable table leg includes an outer leg and an inner leg fitted inside the outer leg. One end of the outer leg is provided with a locking element for adjusting the height of the inner leg. The locking element has a central sleeve through which the inner leg passes. One end of the central sleeve has a shoulder that can be mounted on the top surface of the outer leg. An opening / closing portion is provided on the side wall of the central sleeve along its height direction. Corresponding nut flaps are provided on both sides adjacent to the opening / closing portion. A nut is screwed onto the two nut flaps, allowing the central sleeve to be tightened or loosened through the opening / closing portion.

[0006] This invention uses a central sleeve with a shoulder and an opening / closing section at the end of the outer leg to fix the inner leg inside the outer leg. The inner leg can be tightened or loosened by tightening or loosening the nut flaps, thus achieving height adjustment. In this technical solution, the shape of the central sleeve matches the inner leg, which is equivalent to matching the outer leg, and is mainly used to hold or release the inner leg for height adjustment. The shoulder can be partially located on the top surface of the outer leg (i.e., spaced-apart petal-shaped) or can cover the entire top surface of the outer leg. It mainly serves to prevent the central sleeve from sliding into the outer leg when the inner leg is locked, thus fixing its position. The opening / closing section is a through slit, mainly used to reduce the inner diameter of the central sleeve, tightening its opening size and thus holding the inner leg. The nut flaps are composed of two half-nuts spaced apart by the size of the opening / closing section, fixed to the central sleeve. When the nut is tightened, the distance between the nut flaps decreases, thus tightening the inner diameter of the central sleeve. It is conceivable that the opening / closing section can achieve the above technical effect even if it penetrates the central sleeve.

[0007] Preferably, the shoulder covers the top surface of the outer leg, which not only improves the fixing strength but also enhances the product's aesthetics.

[0008] Preferably, the opening and closing part occupies 60%-100% of the height of the central sleeve. The opening and closing part can be set from the top to the bottom of the central sleeve or from the bottom to the top. Both can reduce the diameter of the central sleeve and achieve the function of tightening.

[0009] In the above-mentioned technical solutions, the shoulder can also be extended vertically downwards along the outer side wall of the outer leg to form a bent portion. This can improve both the fixing strength and the aesthetics of the product. Furthermore, to prevent the central sleeve from detaching from the outer leg, at least one release hole is provided on the shoulder, and a locking platform is provided on the inner wall of the bent portion in the direction corresponding to the release hole. The locking platform can use the reverse teeth on the outer leg side wall to lock the central sleeve only at the end of the outer leg. When it is necessary to disassemble the central sleeve, simply insert a flat tool downwards through the release hole to disengage the reverse teeth from the locking platform, thus achieving disassembly. The locking platform can be formed by protruding outwards from the inner side wall of the outer leg or by being recessed inwards, both of which can achieve the locking function of the central sleeve.

[0010] To improve the fixing strength of the inner leg, a pin can be provided at the center of the top of the nut, which can pass through the nut flaps and reach the inner leg without affecting the closing of the nut flaps; the pin can pass between the two nut flaps and reach the side wall of the inner leg when the nut is tightened, further improving the fixing strength of the inner leg.

[0011] Preferably, the side wall of the central sleeve is provided with an opening and closing part from bottom to top along its height direction. This design can reduce the processing steps of the outer legs and concentrate the locking force at the top of the outer legs. Attached Figure Description

[0012] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;

[0013] Figure 2 yes Figure 1 Sectional view along direction AA in the middle;

[0014] Figure 3 This is a side view of the present invention;

[0015] Figure 4 This is a schematic diagram of the structure at the end of the outer leg.

[0016] In the picture:

[0017] 1. Outer leg; 11. Reverse teeth;

[0018] 2. Central sleeve; 21. Shoulder; 22. Opening / closing part; 23. Nut flap; 24. Bending part; 25. Release hole; 26. Locking platform;

[0019] 3. Nut; 31. Ejector pin. Detailed Implementation

[0020] The specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings:

[0021] like Figures 1 to 4 The adjustable table leg locking component shown is located at the end of the outer leg 1, used to lock the inner leg at that point, thus adjusting the height of the inner leg. This locking component has a central sleeve 2 through which the inner leg passes, the central sleeve 2 matching the shape of the inner leg (not shown in the figure) and the outer leg 1; one end of the central sleeve 2 has a shoulder 21 that can be mounted on the top surface of the outer leg 1, the shoulder 21 covering the top surface of the outer leg 1; and along the height direction of the central sleeve 2, and on one side wall of the central sleeve 2, there is an opening / closing portion 22 from bottom to top, with corresponding nut flaps 23 on both sides adjacent to the opening / closing portion 22, a nut 3 screwed onto the two nut flaps 23, allowing the opening of the central sleeve 2 to be tightened or loosened through the opening / closing portion 22. The aforementioned shoulder 21, central sleeve 2, and opening / closing portion 22 can be integrally molded plastic parts, but other materials, such as metal, can also be used if the above conditions are met.

[0022] like Figure 1 and Figure 2 As shown, the shoulder 21 can be partially located on the top surface of the outer leg 1, i.e., in a spaced-out petal shape. In the above embodiment, the shoulder 21 covers the entire top surface of the outer leg 1, thus maximizing strength and improving the product's aesthetics, while also preventing the top surface of the outer leg 1 from being exposed. For example... Figure 3As shown, the opening / closing part 22 is a continuous slit, mainly used to reduce the inner diameter of the central sleeve 2, thereby tightening the opening size of the central sleeve 2 and thus securing the inner leg. The opening / closing size of the opening / closing part 22 depends on the situation, because the outer and inner diameters of the outer leg 1 and the inner leg have a certain matching ratio. The larger the opening / closing size, the larger the size of the nut 3. The optimal range is that the opening / closing part 22 occupies 60%-100% of the height of the central sleeve 2. Whether the opening / closing part 22 extends through the entire height of the central sleeve 2 or is only part of it can be determined according to the actual situation, as long as it can achieve the locking function. Figure 1 and Figure 3 As shown, the nut piece 23 is composed of two half-nuts spaced apart by the dimensions of the opening and closing portion 22. To facilitate adjustment of the tightness of the opening and closing portion 22, the nut piece 23 can be designed in a conical shape, as shown... Figure 1 As shown, the radius gradually decreases from the inside to the outside. The distance between the nut 3 and the bottom opening and closing part 22 of the nut 23 is the smallest, and the tightness is the greatest.

[0023] like Figures 1 to 3 As shown, to improve the product's aesthetics and enhance the fixing strength of the central sleeve 2 at the outer leg 1 port, its shoulder 21 extends vertically downward along the outer side wall of the outer leg 1 to form a bent portion 24, which partially wraps around the outer leg 1. Figure 1 and Figure 2 As shown, to prevent the central sleeve 2 from detaching from the outer leg 1, at least one release hole 25 can be opened on the shoulder 21. In this embodiment, two corresponding release holes 25 are opened; and in the direction corresponding to each release hole 25, a retaining plate 26 is provided on the inner wall of its bent portion 24. Figure 2 and Figure 4 As shown, the locking platform 26 can secure the central sleeve 2 to the port of the outer leg 1 using the reverse teeth 11 on the side wall of the outer leg 1. When it is necessary to disassemble the central sleeve 2, simply insert a flat tool downwards through the release hole 25 to release the reverse teeth 11 from the restraint of the locking platform 26, thus achieving disassembly. The locking platform 26 can be formed by the outward protrusion of the inner side wall of the outer leg 1, or it can be as shown in the image. Figure 2 The recessed inner wall shown can be used to lock the central sleeve 2.

[0024] In order to improve the fixation strength of the inner leg based on the above implementation method, such as Figure 1 As shown in the nut 3, a pin 31 can be provided at the center of the top of the nut 3, which can pass through the nut flap 23 and reach the inner leg without affecting the closing of the nut flap 23; the pin 31 can pass between the two nut flaps 23 and reach the side wall of the inner leg when the nut 3 is tightened, further improving the fixing strength of the inner leg.

Claims

1. A locking device for a height-adjustable table leg, comprising an outer leg and an inner leg fitted inside the outer leg, wherein one end of the outer leg is provided with a locking device for adjusting the height of the inner leg, characterized in that: The locking member has a central sleeve through which the inner leg passes. One end of the central sleeve is provided with a shoulder that can be mounted on the top surface of the outer leg. The side wall of the central sleeve is provided with an opening and closing part along its height direction. Corresponding nut flaps are provided on both sides adjacent to the opening and closing part. A nut is screwed onto the two nut flaps. The central sleeve can be tightened or loosened through the opening and closing part.

2. The locking component for the lifting table legs as described in claim 1, characterized in that: The shoulder covers the top surface of the outer leg.

3. The locking component for the lifting table legs as described in claim 1, characterized in that: The opening and closing part occupies 60%-100% of the height of the central sleeve.

4. The locking component for the lifting table legs as described in any one of claims 1 to 3, characterized in that: The shoulder extends vertically downward along the outer side wall of the outer leg to form a bend.

5. The locking component for the lifting table legs as described in claim 4, characterized in that: At least one release hole is provided on the shoulder, and a retaining plate is provided on the inner wall of the bent portion in the direction corresponding to the release hole.

6. The locking component for the lifting table legs as described in claim 5, characterized in that: The inner wall of the bent portion is recessed to form a retaining platform.

7. The locking component for the lifting table legs as described in any one of claims 1 to 3, characterized in that: The nut has a pin at the center of its top that can pass through the nut flap to the inner leg without affecting the closing of the nut flap.

8. The locking component for the lifting table legs as described in any one of claims 1 to 3, characterized in that: The side wall of the central sleeve is provided with an opening and closing part along its height direction from bottom to top.

Images