Improved connecting structure of tooth-shaped foot rod and grab rail
By using a welding and plug welding connection structure between the toothed foot rod and the armrest rod, the problems of insufficient connection strength and poor aesthetics of existing metal seat armrest rods and foot rods are solved, achieving a connection effect that is high-strength, aesthetically pleasing, and easy to process.
Patent Information
- Application Number
- CN202520159000.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-23
- Publication Date
- 2025-12-12
- Estimated Expiration
- 2035-01-23
AI Technical Summary
The armrests and footrests of existing metal seats are directly welded together, which leads to problems such as high welding difficulty, insufficient strength, inconvenience in polishing, and poor aesthetics.
The connection structure of toothed foot rods and handrails is adopted. The handrails are welded to the grooves by setting grooves and notches at the top of the toothed foot rods, and then plugged and welded with decorative cover rods. The weld is strengthened by combining with the isolation plate, and the decorative cover rods are added for aesthetic purposes.
It achieves a strong weld, simple grinding, beautiful appearance and high strength connection effect, avoids grinding of irregular connection parts, and improves processing efficiency and welding strength.
Smart Images
Figure CN223653516U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to furniture technical field relates to a connecting structure of foot bar and handrail, especially an improved connecting structure of toothed foot bar and handrail. BACKGROUND
[0002] Metal furniture products are more and more favored by people, especially metal chairs, metal tea tables and the like are more widely used because of their flexible and changeable shapes, environmental protection, aesthetic appearance and advantages of firmness and durability.
[0003] The existing metal chair is a seat with a backrest and some with an armrest, with the development of modern technology, the material and types of the seat are various, among which the aluminum alloy seat is widely used because of its light weight, high strength, convenient installation and high cost performance, but the armrest and the foot bar of the existing aluminum alloy seat are mostly connected by directly welding one end of one component against the side of the other component, which causes subsequent polishing inconvenience, and excessive polishing also causes insufficient strength, the surface quality is not very good, the pores are too many, and time and effort are wasted, in addition, in order to improve the appearance of the foot bar and save materials, the outer wall of the existing metal foot bar is made into a toothed tubular structure, when the end of the foot bar is directly welded against the side of the armrest, because the wall thickness of the foot bar is irregular, it will further increase the welding difficulty and affect the welding firmness, and further cause subsequent polishing inconvenience. SUMMARY
[0004] The utility model aims at the above problems existing in the prior art and provides an improved connecting structure of toothed foot bar and armrest.
[0005] The utility model discloses a connecting structure of toothed foot bar and armrest, the toothed foot bar is tubular structure, and the outer wall has a plurality of tooth grooves along the length direction of the toothed foot bar, characterized in that the free end of the armrest is arranged on the top end of the toothed foot bar, the top end of the toothed foot bar has a concave groove recessed and matched with the shape of the bottom surface of the free end of the armrest, the free end of the armrest is fixed on the top end of the toothed foot bar by welding and is located on the concave groove, the connecting structure includes a decorative cover rod covering the free end of the armrest, the decorative cover rod has a plurality of plug welding holes, and the decorative cover rod is fixed with the armrest by plug welding.
[0006] In the improved connecting structure of toothed foot bar and armrest, the cross section of the toothed foot bar is rectangular, the armrest is arranged on the top end of the toothed foot bar along the length direction of the cross section of the toothed foot bar, and the length of the armrest above the top end of the toothed foot bar is less than the cross section length of the top end of the toothed foot bar.
[0007] In the improved connecting structure of the tooth-shaped leg rod and the handrail rod, the tubular inner cavity of the tooth-shaped leg rod is provided with at least one partition plate arranged along the length direction of the tooth-shaped leg rod, the top end of the partition plate is provided with a notch matched with the shape of the bottom surface of the free end of the handrail rod, and the free end of the handrail rod is arranged on the top end of the partition plate and located on the notch.
[0008] In the improved connecting structure of the tooth-shaped leg rod and the handrail rod, the bottom end surface of the decorative cover rod is abutted against the top end surface of the tooth-shaped leg rod.
[0009] In the improved connecting structure of the tooth-shaped leg rod and the handrail rod, the front end wall surface of the tooth-shaped leg rod is made into an arc surface, and the front end wall surface of the decorative cover rod is made into an arc surface consistent with the arc of the front end wall surface of the tooth-shaped leg rod.
[0010] In the improved connecting structure of the tooth-shaped leg rod and the handrail rod, the left and right wall surfaces of the decorative cover rod are respectively flush with the left and right wall surfaces of the tooth-shaped leg rod.
[0011] In the improved connecting structure of the tooth-shaped leg rod and the handrail rod, the transverse width of the handrail rod is smaller than the cross-sectional width of the tooth-shaped leg rod.
[0012] In the improved connecting structure of the tooth-shaped leg rod and the handrail rod, the bottom end of the handrail rod is made into a circular arc surface.
[0013] Compared with the prior art, the improved connecting structure of the tooth-shaped leg rod and the handrail rod has the following advantages:
[0014] 1. The improved connecting structure of the tooth-shaped leg rod and the handrail rod changes the original mode of directly welding the leg rod and the handrail rod and then polishing the connecting surface into the mode of welding the handrail rod with a smaller caliber relative to the tooth-shaped leg rod on the top end of the tooth-shaped leg rod and then adopting the plug welding connecting structure of the decorative cover rod and the handrail rod, so that the welding firmness of the tooth-shaped leg rod and the handrail rod can be ensured, the irregular connecting part of the end part of the tooth-shaped leg rod and the bottom end surface of the handrail rod does not need to be polished under the shielding of the decorative cover rod with the shape consistent with the outer wall surface of the tooth-shaped leg rod, the processing is simple, the welding strength between the tooth-shaped leg rod and the handrail rod is further ensured, and damage is avoided.
[0015] 2. The decorative cover rod and the leg rod with the tooth-shaped side wall surface are adopted, and the appearance is better. BRIEF DESCRIPTION OF DRAWINGS
[0016] Figure 1 is a structural schematic diagram of the utility model.
[0017] Figure 2 is an effect diagram after forming of the utility model.
[0018] In the figure, 1, tooth-shaped foot rod; 101, tooth groove; 102, groove; 103, isolation plate; 104, notch; 2, handrail rod; 3, decorative cover rod; 301, plug welding hole. DETAILED DESCRIPTION
[0019] The following is a specific embodiment of the utility model and further describes the technical scheme of the utility model in combination with the drawings, but the utility model is not limited to these embodiments.
[0020] Reference Figure 1 The embodiment is a connecting structure of an improved tooth-shaped foot rod 1 and a handrail rod 2. The tooth-shaped foot rod 1 is a tubular structure, and the outer wall surface has a plurality of tooth grooves 101 arranged along the length direction of the tooth-shaped foot rod 1. The free end of the handrail rod 2 is arranged and connected at the top end of the tooth-shaped foot rod 1. The top end of the tooth-shaped foot rod 1 has a groove 102 which is concave and has a shape matched with the bottom surface shape of the free end of the handrail rod 2. The free end of the handrail rod 2 is fixedly connected to the top end of the tooth-shaped foot rod 1 by welding and is located on the groove 102. The connecting structure comprises a decorative cover rod 3 arranged on the free end of the handrail rod 2. The decorative cover rod 3 has a plurality of plug welding holes 301. The decorative cover rod 3 is fixedly connected to the handrail rod 2 by plug welding.
[0021] Further, the cross section of the tooth-shaped foot rod 1 is rectangular. The handrail rod 2 is arranged and connected at the top end of the tooth-shaped foot rod 1 along the length direction of the cross section of the tooth-shaped foot rod 1. The length of the handrail rod 2 above the top end of the tooth-shaped foot rod 1 is less than the cross section length of the top end of the tooth-shaped foot rod 1. In this embodiment, the handrail rod 2 is only partially arranged at the top end of the tooth-shaped foot rod 1, which can provide a position for the decorative cover rod 3 to be arranged. This can not only ensure the appearance, but also make the decorative cover rod 3 and the front end of the tooth-shaped foot rod 1 flush, thereby ensuring smooth transition.
[0022] Further, the tubular inner cavity of the tooth-shaped foot rod 1 has at least one isolation plate 103 arranged along the length direction of the tooth-shaped foot rod 1. The top end of the isolation plate 103 has a notch 104 matched with the bottom surface shape of the free end of the handrail rod 2. The free end of the handrail rod 2 is arranged at the top end of the isolation plate 103 and is located on the notch 104. The handrail rod 2 and the tooth-shaped foot rod 1 are not only connected through the rear outer wall surface of the top end of the tooth-shaped foot rod 1, but also connected through the isolation plate 103, thereby better ensuring the welding firmness.
[0023] Further, the transverse width of the handrail rod 2 is less than the cross-sectional width of the toothed foot rod 1, the bottom end face of the decorative cover rod 3 abuts against the top end face of the toothed foot rod 1, the front end wall face of the toothed foot rod 1 is made into an arc face, the front end wall face of the decorative cover rod 3 is made into an arc face consistent with the arc of the front end wall face of the toothed foot rod 1, the left and right wall faces of the decorative cover rod 3 are respectively flush with the left and right wall faces of the toothed foot rod 1, the handrail rod 2 is equivalent to being embedded between the toothed foot rod 1 and the decorative cover rod 3, on the basis of ensuring the welding firmness of the three, the smooth transition between the decorative cover rod 3 and the toothed foot rod 1 and the comfort of wiping during use are ensured.
[0024] Further, the bottom end of the handrail rod 2 is made into a circular arc face, the groove 102 and the notch 104 of the top end of the toothed foot rod 1 are also made into arc openings consistent with the arc of the bottom end of the handrail rod 2, which can make the handrail rod 2 and the toothed foot rod 1 better fit and the welding more firm.
[0025] In the manufacturing of the embodiment, the handrail rod 2 is first placed at the milled part of the top end of the toothed foot rod 1 and then reinforced by welding, the plug welding hole 301 is drilled on the decorative cover rod 3 with smooth outer wall face, the decorative cover rod 3 is sleeved on the outside of the handrail rod 2 and above the toothed foot rod 1, then the decorative cover rod 3 and the handrail rod 2 are welded, the flux of the plug welding hole 301 on the decorative cover rod 3 is polished, and finally the surface is treated by painting and other surface treatments, thereby forming a molding effect with smooth surface, for example Figure 2 .
[0026] The specific embodiments described herein are merely illustrative of the spirit of the present application. Those skilled in the art to which the present application belongs can make various modifications or supplements to the described specific embodiments or replace them with similar ways, without deviating from the spirit of the present application or exceeding the scope defined by the appended claims.
Claims
1. An improved connection structure between a toothed foot rod and a handrail, wherein the toothed foot rod (1) is a tubular structure and its outer wall surface has a plurality of toothed grooves (101) arranged along the length direction of the toothed foot rod (1), characterized in that, The free end of the handrail (2) is mounted and connected to the top of the toothed foot rod (1). The top of the toothed foot rod (1) has a recessed groove (102) whose shape matches the bottom surface of the free end of the handrail (2). The free end of the handrail (2) is fixed to the top of the toothed foot rod (1) by welding and is located on the groove (102). The connection structure includes a decorative cover rod (3) covering the free end of the handrail (2). The decorative cover rod (3) has several through-type plug welding holes (301). The decorative cover rod (3) is fixed to the handrail (2) by plug welding.
2. The improved connection structure between the toothed foot and the handrail according to claim 1, characterized in that, The toothed leg (1) has a rectangular cross-section. The handrail (2) is erected and connected to the top of the toothed leg (1) along the cross-sectional length of the toothed leg (1). The length of the handrail (2) above the top of the toothed leg (1) is less than the cross-sectional length of the top of the toothed leg (1).
3. The improved connection structure between the toothed foot and the handrail according to claim 2, characterized in that, The toothed leg (1) has at least one partition plate (103) arranged along the length of the toothed leg (1) in the tubular inner cavity. The top of the partition plate (103) has a notch (104) that matches the shape of the bottom surface of the free end of the handrail (2). The free end of the handrail (2) is mounted on the top of the partition plate (103) and located on the notch (104).
4. The improved toothed foot bar and handrail connection structure according to claim 1, 2, or 3, characterized in that, The bottom end face of the decorative cover rod (3) abuts against the top end face of the toothed foot rod (1).
5. The improved toothed foot bar and handrail connection structure according to claim 1, 2, or 3, characterized in that, The front wall of the toothed foot rod (1) is made into an arc surface, and the front wall of the decorative cover rod (3) is made into an arc surface with the same curvature as the front wall of the toothed foot rod (1).
6. The improved connection structure between the toothed foot and the handrail according to claim 5, characterized in that, The left and right walls of the decorative cover rod (3) are flush with the left and right walls of the toothed foot rod (1).
7. The improved connection structure between the toothed foot and the handrail according to claim 6, characterized in that, The lateral width of the handrail (2) is smaller than the cross-sectional width of the toothed foot (1).
8. The improved toothed foot bar and handrail connection structure according to claim 1, 2, or 3, characterized in that, The bottom end of the handrail (2) is made into an arc surface.