Baking lamp arm structure

Abstract

The utility model relates to a kind of baking lamp branch arm structure, including connecting portion, first connecting rod, second connecting rod, third connecting rod, fourth connecting rod, first end and second end;The both ends of the first connecting rod and second connecting rod are respectively connected with first end and connecting portion one side rotation, and the both ends of the third connecting rod and third connecting rod are respectively connected with second end and connecting portion other side rotation;Spring is hiddenly arranged in the second connecting rod and fourth connecting rod;The forearm and rear arm realize rotating function by the control of spring.The utility model is designed with connecting portion, first connecting rod, second connecting rod, third connecting rod, fourth connecting rod, first end and second end, and spring is hiddenly arranged in the second connecting rod and fourth connecting rod;The forearm and rear arm realize the rotating function by the control of spring, since spring is hiddenly designed in structure spring does not occupy space, in the process of use, spring can avoid the injury influence to hand, and spring is also protected, and the overall appearance of branch arm is more simple and beautiful.

Description

TECHNICAL FIELD

[0001] The utility model discloses electromagnetic baking lamp accessory structure technical field, more particularly in a kind of baking lamp support arm structure. BACKGROUND

[0002] Electromagnetic wave baking lamp (TDP electromagnetic baking lamp) can promote blood circulation, promote blood circulation, promote metabolism, and the treatment effect is obvious. Can treat the common diseases of old people: cervical spondylosis, lumbar spondylosis, rheumatism, rheumatoid arthritis, headache, general soreness and so on. Nursing work uses electromagnetic wave baking lamp auxiliary treatment following disease: one, cervical spondylosis, persistent intractable diarrhea and infantile enteritis curative effect is remarkable;Two, internal blood stasis, thrombus, hematoma etc.;Three, blood circulation disorder, microcirculation obstruction etc.;Four, various soft tissue injuries, have good anti-inflammatory, detumescence effect;Five, rheumatoid arthritis, headache etc.

[0003] Existing electromagnetic wave heating lamps generally use hinged brackets as support components. An investigation revealed that on the 1688 online store, the Hesiyuan Specific Electromagnetic Spectrum Therapy Instrument (model TDP-L3A) designed by Zhengzhou Yuyue Medical Technology Co., Ltd. features a heating lamp hinged arm consisting of two parallel connecting rods. Springs are placed on the outside of these connecting rods, assisting in rotation. This design is common. For example, on February 24, 2020, Sichuan Hengming Technology Development Co., Ltd. designed a "Specific Electromagnetic Spectrum Therapy Instrument" (publication number CN306250726S). The design drawings clearly show that the heating lamp's hinged arm uses two parallel support rods, with springs placed on the outside of these rods. The rotational function has a drawback: the springs are exposed, making people susceptible to injury from being pinched by the springs when rotating the joint. Additionally, the exposed springs are prone to corrosion in the air and take up space. To address this type of support arm structure, a combination of two parallel support rods and springs is used. For example, in publication number CN306113640S, a similar design is seen in the "Active Telescopic Support Arm for Specific Electromagnetic Spectrum Therapy Instrument" designed by the Chongqing Institute of Silicate Materials on October 24, 2008. This arm uses parallelogram arms hinged at both ends. Specifically, a first tension spring is installed between one of the support rods of the upper arm and the intermediate connecting seat. The two parallel support rods of the lower arm are hinged between the intermediate connecting seat and the lower connecting seat. A second tension spring is installed between one of the support rods and the lower connecting seat. This design is common in the market. It involves parallel connecting rods with connecting seats at their ends, and tension springs are installed between the parallel connecting rods to achieve rotation. This design also uses two parallel support rods and tension springs. However, the tension springs in this combination structure are exposed, which can easily cause hand pinching. As a technical improvement, a patent application filed on January 22, 2013, by Chongqing Changle Silicate Co., Ltd., titled "Anti-Pinch Telescopic Support Arm for a TDP Therapy Instrument," has a similar structure to the aforementioned patent. It also includes a combination of parallel quadrilateral support arms hinged at both ends, with tension springs installed on the outer sides of both the upper and lower support arms. The manual states that "one end of the tension spring is installed on the upper part of the support rod, and the other end is installed on the base column through the lower movable connection head and tail." The attached drawings in the manual reveal that the tension spring is exposed. As a technical improvement, on January 22, 2013, the applicant, Chongqing Changle Silicate Co., Ltd., designed "Anti-pinch movable telescopic support arm of a TDP therapy instrument." In order to prevent the spring from pinching the hand, its design point is to use a corrugated tube. Although the rotating arm is wrapped with a corrugated tube, the corrugated tube is easy to damage, which will also lead to the spring being exposed. Therefore, this design is somewhat unreasonable. In view of this, the applicant hereby applies for this invention as a technical improvement, using a combination structure of two parallel support rods + spring for the heat lamp. Utility Model Content

[0004] In order to solve the above-mentioned problems in the prior art, the present invention provides a lamp support arm structure that can improve the above deficiencies.

[0005] This utility model relates to a lamp support arm structure, including a connecting part, a first connecting rod, a second connecting rod, a third connecting rod, a fourth connecting rod, a first end, and a second end. The first and second connecting rods are of equal length and arranged parallel to each other. The two ends of the first and second connecting rods are rotatably connected to the first end and one side of the connecting part, respectively. The third and fourth connecting rods are of equal length and arranged parallel to each other. The two ends of the third and fourth connecting rods are rotatably connected to the second end and the other side of the connecting part, respectively. The connecting part is trapezoidal, wider at the top and narrower at the bottom, with clamping plates on both sides. Four rotating shafts are arranged in the middle and are rotatably connected to the first, second, third, and fourth connecting rods, respectively. The distance between the rotating point of the first connecting rod and the connecting part and the rotating point of the third connecting rod and the connecting part is greater than the distance between the rotating point of the second connecting rod and the rotating point of the connecting part and the rotating point of the fourth connecting rod and the connecting part. The first and second connecting rods form a forearm, and the third and fourth connecting rods form a rear arm. Springs are hidden inside the second and fourth connecting rods. The forearm and rear arm achieve rotation through the control of the springs.

[0006] As a technological improvement, the first connecting rod, the second connecting rod, the third connecting rod, and the fourth connecting rod are all made of metal plates bent into rectangular tubes or seamless rectangular tubes.

[0007] Furthermore, the first connecting rod has a first opening hole on its bottom surface near the connecting part, and the second connecting rod has a second opening hole on its top surface near the connecting part and a third opening hole on its other side. A first spring and a slider are hidden inside the second connecting rod. The first spring has a first front pull hook at its front end, which hooks onto the third opening hole. The first spring has a first rear pull hook at its rear end, which hooks onto one side of the slider. The other side of the slider is hooked to one end of a double-headed pull hook, and the other end of the double-headed pull hook passes through the second opening hole and hooks onto the first opening hole.

[0008] Furthermore, a fourth opening hole is provided on the bottom surface of the third connecting rod near the second end, a fifth opening hole is provided on the top surface of the fourth connecting rod near the second end, and a sixth opening hole is provided on the other side. A second spring and a slider are hidden inside the fourth connecting rod. A second front pull hook is provided at the front end of the second spring and hooks onto the sixth opening hole. A second rear pull hook is provided at the rear end of the second spring and hooks onto one side of the slider. One end of a double-headed pull hook is provided on the other side of the slider. The other end of the double-headed pull hook passes through the fifth opening hole and hooks onto the fourth opening hole.

[0009] Furthermore, a lamp head connecting rod is provided on the front side of the first end, a groove is provided on the first end to accommodate the rear section of the lamp head connecting rod, a stop block is provided on the bottom surface of the first end to block the rear section of the connecting rod, an avoidance ring groove matching the stop block is provided on the rear section, and an adjusting stud is provided on the bottom and top surfaces of the first end to adjust the rotation of the lamp head connecting rod.

[0010] Furthermore, the first connecting rod has a first opening hole on its bottom surface near the connecting part, the second connecting rod has a second opening hole on its top surface near the connecting part, and a third opening hole on its other side. A first spring is hidden inside the second connecting rod. The front end of the first spring has a first front pull hook that hooks onto the third opening hole. The rear end of the first spring has a first rear pull hook with an inclined section that passes through the second opening hole and hooks onto the first opening hole.

[0011] Furthermore, a fourth opening hole is provided on the bottom surface of the third connecting rod near the connecting part, a fifth opening hole is provided on the top surface of the third connecting rod near the connecting part, and a sixth opening hole is provided on the other side. A second spring is hidden inside the fourth connecting rod. A second front pull hook is provided at the front end of the second spring and hooks onto the sixth opening hole. A second rear pull hook with an inclined section is provided at the rear end of the second spring. The rear end of the second spring passes through the fifth opening hole through the inclined section and hooks onto the fourth opening hole.

[0012] Furthermore, the first end has two side plates close to each other. The ends of the first connecting rod and the second connecting rod are disposed between the two side plates and rotatably connected by a rotating shaft. The two side plates have outwardly convex arc-shaped portions in front away from the rotating shaft. A side hole is provided in the middle of each of the two outwardly convex arc-shaped portions. The front side of the two side plates merge to form a connecting end. A lamp holder connecting rod is rotatably connected inside the connecting end. The side plates are provided with a semi-slit groove for the lamp holder connecting rod to pass through. The slot of the semi-slit groove is connected to the side hole. The rear section of the lamp holder connecting rod passes through the two semi-slit grooves and its end is provided with an anti-detachment end. A portion of the side hole expands to the rear side of the connecting end at the merged position and forms a concave platform with the end of the semi-slit groove. The anti-detachment end is provided on the concave platform.

[0013] Furthermore, a mounting plate is provided on the first end, and a tension adjustment stud knob is provided on both the second end and the connecting part.

[0014] When the forearm and rear arm rotate and fold, the elastic element in the second connecting rod is in a fully stretched state, and the elastic element in the fourth connecting rod is in a slightly stretched state; when the forearm and rear arm rotate and open, the elastic element in the second connecting rod is in a slightly stretched state, and the elastic element in the fourth connecting rod is in a fully stretched state.

[0015] This utility model is designed with a connecting part, a first connecting rod, a second connecting rod, a third connecting rod, a fourth connecting rod, a first end, and a second end. The first and second connecting rods form a forearm, and the third and fourth connecting rods form a rear arm. Springs are hidden inside the second and fourth connecting rods. The forearm and rear arm achieve rotation through the control of the springs. Since the springs are hidden in the structure, they do not take up space, and damage caused by the springs can be avoided during use. At the same time, the internal springs are protected, and the overall appearance of the support arm is simpler and more beautiful. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the lamp support arm structure in Example 1.

[0017] Figure 2 for Figure 1 Mid-section view.

[0018] Figure 3 This is a schematic diagram of the lamp support arm structure in Example 2.

[0019] Figure 4 for Figure 3 Mid-section view.

[0020] Figure 5 This is a schematic diagram of the slider structure.

[0021] Illustration: 0 Rotating shaft, 1 Connecting part, 2 First end, 21 Mounting plate, 3 Second end, 4 First connecting rod, 41 First opening hole, 5 Second connecting rod, 51 Second opening hole, 52 Third opening hole, 6 Third connecting rod, 61 Fourth opening hole, 7 Fourth connecting rod, 71 Fifth opening hole, 72 Sixth opening hole, 8 Adjusting stud, 9 Lamp head connecting rod, 91 Stop block, 92 Clearance ring groove, 93 Anti-detachment end, 10 First spring, 11 First front pull hook, 111 Extension, 12 First rear pull hook, 13 Double-headed pull hook, 131 Hook part, 14 Second spring, 15 Second front pull hook, 16 Second rear pull hook, 17 Slider, 171 Short rod, 172 Connecting groove, 30 Column groove, (121, 161) Inclined section, 30 Side plate, 32 Arc-shaped part, 33 Side hole, 301 Half-section groove. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the scope of the present utility model.

[0023] Example 1: See Figures 1-2 , Figure 5As shown, this utility model relates to a lamp support arm structure, including a connecting part 1, a first connecting rod 4, a second connecting rod 5, a third connecting rod 6, a fourth connecting rod 7, a first end 2, and a second end 3. The first and second connecting rods are of equal length and arranged in parallel. The two ends of the first and second connecting rods are rotatably connected to the first end 3 and one side of the connecting part, respectively. The third and fourth connecting rods are of equal length and arranged in parallel. The two ends of the third and fourth connecting rods are rotatably connected to the second end 3 and the other side of the connecting part, respectively. The connecting part has a trapezoidal design, wider at the top and narrower at the bottom, with clamping plates on both sides. Four rotating shafts 0 are arranged between the two clamping plates. The first connecting rod, the second connecting rod, the third connecting rod, and the fourth connecting rod... The connecting rods are rotatably connected to the connecting parts via rotating shafts. The distance between the rotating points of the first and third connecting rods and the connecting parts is greater than the distance between the rotating points of the second and fourth connecting rods and the connecting parts. At the second end, there are two clamping plates for accommodating the ends of the first and second connecting rods. The first and second connecting rods are rotatably connected to the clamping plates via rotating shafts. The same structure is used at the first end to rotatably connect them to the third and fourth connecting rods. The first end has a U-shaped groove, and the third and fourth connecting rods are positioned within this groove. The third and fourth connecting rods are rotatably connected to the first end via rotating shafts. The first and second connecting rods form a forearm, and the third and fourth connecting rods form a rear arm. Elastic elements are concealed within both the second and fourth connecting rods. The forearm and rear arm rotate under the control of these elastic elements.

[0024] As a technical improvement, the first, second, third, and fourth connecting rods are all made of metal plates bent into rectangular tubes or seamless rectangular tubes. When the forearm and rear arm rotate and fold, the elastic element in the second connecting rod extends to 90%-100% of its maximum allowable elongation, which is the fully stretched state. At this time, the elastic force generated by the elastic element reaches 85%-95% of its maximum elastic force. The elastic element in the fourth connecting rod extends to 10%-20% of its maximum allowable elongation, which is the slightly stretched state, and the elastic force generated is 10%-20% of its maximum elastic force. The elastic element has the greatest elastic change and the greatest elastic force in the fully stretched state, while the spring force is smaller in the slightly stretched state. This ensures that the forearm and rear arm can be tightly closed. When the forearm and rear arm rotate and open, the elastic element in the second connecting rod extends by 10%-20% of its maximum allowable extension, is in a slightly stretched state, and generates an elastic force of 10%-20% of its maximum elastic force; while the elastic element in the fourth connecting rod extends to 90%-100% of its maximum allowable extension, is in a fully stretched state, and generates an elastic force of 85%-95% of its maximum elastic force. At this time, the forearm can be supported and forms an open state with the rear arm. If the spring body in the second connecting rod is also in a fully stretched state, the forearm will fold downwards, which is not conducive to the opening of the forearm.

[0025] Furthermore, the first connecting rod 4 has a first opening hole 41 on its bottom surface near the connecting part, and the second connecting rod has a second opening hole 51 on its top surface near the connecting part at one end, and a third opening hole 52 on its top surface at the other end. An elastic element is hidden inside the second connecting rod, the elastic element including a first spring 10 and a slider 17. Specifically, the front end of the first spring has a first front pull hook 11, which hooks onto the third opening hole 52. The rear end of the first spring has a first rear pull hook 12 and a slider 17. The slider is slidably connected to the inner wall of the second connecting rod, wherein the slider has connecting grooves 172 on both sides, and a connecting rod short rod 1 is provided in each connecting groove. 71. The first pull hook is hooked onto the connecting short rod on one side of the slider. The connecting short rod on the connecting groove on the other side of the slider is hooked onto one end of the double-headed pull hook 13. The double-headed pull hook has hooks 131 at both ends after being bent in the middle. The hooks are hooked onto the connecting short rod in the connecting groove. The other end of the double-headed pull hook passes through the second opening hole 51 and hooks onto the first opening hole 41 of the first connecting rod. It should be noted that the bend in the middle of the double-headed pull hook is more conducive to hooking and connecting. If the double-headed pull hook is designed in a straight line, the hooks of the double-headed pull hook cannot hook effectively. At the same time, due to the oblique traction of the double-headed pull hook, the first spring and the inner wall of the second connecting rod come into frictional contact, resulting in greater resistance.

[0026] Furthermore, the third connecting rod 6 has a fourth opening hole 61 on its bottom surface near the first end 2, a fifth opening hole 71 on its top surface near the first end, and a sixth opening hole 72 on its top surface at the other end. An elastic element is hidden inside the fourth connecting rod 7. The elastic element includes a second spring 14 and a slider 17. A second front pull hook 15 is provided at the front end of the second spring, hooking onto the sixth opening hole 72. A second rear pull hook 16 and a slider 17 are provided at the rear end of the second spring. The side has a connecting groove 172, and a connecting rod 171 is provided in each connecting groove. The slider is slidably connected to the inner wall of the fourth connecting rod. The second pull hook is hooked on the connecting rod 171 on one side of the slider. The connecting rod on the connecting groove on the other side of the slider is hooked to one end of the double-headed pull hook 13. The double-headed pull hook has hooks 131 at both ends after being bent in the middle. The other end of the double-headed pull hook passes through the sixth opening hole and is hooked at the fourth opening hole 61 of the third connecting rod. The double-headed pull hook here is the same as the design mentioned above, and also has a middle bending structure.

[0027] Furthermore, a lamp head connecting rod 9 is provided on the front side of the second end 3, and a groove 30 for accommodating the rear section of the lamp head connecting rod is provided on the second end. A stop block 91 for blocking the rear section of the lamp head connecting rod is provided on the bottom surface of the second end. An avoidance ring groove 92 matching the stop block is provided on the rear section of the lamp head connecting rod. The front end of the stop block has a protrusion that contacts the avoidance ring groove. The lamp head connecting rod rotates through the cooperation of the stop block and the avoidance ring groove. An adjusting stud 8 for adjusting the rotation of the lamp head connecting rod is provided on the bottom and top surfaces of the first end. The adjusting stud can abut against the lamp head connecting rod. The lamp head connecting rod is used for the installation and fixing of the lamp head.

[0028] Example 2: See Figure 3 , 4As shown, this utility model relates to a lamp support arm structure, including a connecting part 1, a first connecting rod 4, a second connecting rod 5, a third connecting rod 6, a fourth connecting rod 7, a first end 3, and a second end 4; the first and second connecting rods are of equal length and arranged in parallel, with their ends respectively rotatably connected to the first end 3 and one side of the connecting part 1; the third and fourth connecting rods are of equal length and arranged in parallel, with their ends respectively rotatably connected to the second end 4 and the other side of the connecting part; the connecting part is trapezoidal, wider at the top and narrower at the bottom, and has clamping plates on both sides. Four rotating shafts are set in the middle. The first, second, third, and fourth connecting rods are rotatably connected to the connecting parts through the rotating shafts. The distance between the rotating points of the first and third connecting rods and the connecting parts is greater than the distance between the rotating points of the second and fourth connecting rods and the connecting parts. The first and second connecting rods form the forearm, and the third and fourth connecting rods form the rear arm. Elastic elements are hidden inside the second and fourth connecting rods. The forearm and rear arm are rotated by the control of the elastic elements.

[0029] As a technical improvement, the first, second, third, and fourth connecting rods are all made of metal plates bent into rectangular tubes or seamless rectangular tubes. When the forearm and rear arm rotate and fold, the elastic element in the second connecting rod extends to 90%-100% of its maximum allowable elongation, is in a fully stretched state, and generates an elastic force of 85%-95% of its maximum elastic force; the elastic element in the fourth connecting rod extends to 10%-20% of its maximum allowable elongation, is in a slightly stretched state, and generates an elastic force of 10%-20% of its maximum elastic force. When the forearm and rear arm rotate and open, the elastic element in the second connecting rod extends to 10%-20% of its maximum allowable elongation, is in a slightly stretched state, and generates an elastic force of 10%-20% of its maximum elastic force; the elastic element in the fourth connecting rod extends to 90%-100% of its maximum allowable elongation, is in a fully stretched state, and generates an elastic force of 85%-95% of its maximum elastic force.

[0030] Furthermore, the first connecting rod 4 has a first opening hole 41 on its bottom surface near the connecting part, the second connecting rod 5 has a second opening hole 51 on its top surface near the connecting part, and a third opening hole 52 on its top surface at the other end. An elastic element, namely a first spring 10, is hidden inside the second connecting rod. The first spring has a first front hook 11 at its front end, which hooks onto the third opening hole 52. The first spring has a first rear hook 12 with an inclined section 121 at its rear end. The angle between the inclined section and the axis of the first spring is about 152°. The rear end of the first spring passes through the second opening hole through the inclined section and hooks onto the first opening hole 41 of the first connecting rod. Due to the inclined section designed at the rear end of the first spring, the first spring will not rub against the inner wall of the second connecting rod during elastic stretching.

[0031] Furthermore, the third connecting rod has a fourth opening 61 near the bottom surface of the first end, a fifth opening 71 near one end of the top surface of the fourth connecting rod, and a sixth opening 72 near the other end. An elastic element, a second spring 14, is concealed within the fourth connecting rod. A second front hook 15 is located at the front end of the second spring and hooks onto the sixth opening. A second rear hook 16 with an inclined section 161 is located at the rear end of the second spring. The angle between the inclined section and the axis of the second spring is approximately 152°. The rear end of the second spring passes through the fifth opening and hooks onto the fourth opening of the third connecting rod. The inclined section at the rear end of the second spring prevents it from rubbing against the inner wall of the fourth connecting rod during elastic stretching.

[0032] Furthermore, the second end has two side plates 30 that are close to each other. The ends of the first connecting rod and the second connecting rod are located between the two side plates and are rotatably connected by a rotating shaft 0. The two side plates have outwardly protruding arc-shaped portions 32 in front of them away from the rotating shaft. A side hole 33 is provided in the middle of each of the two outwardly protruding arc-shaped portions. The front of the two side plates merges to form a connecting end. A lamp holder connecting rod 9 is rotatably connected inside the connecting end. A half-groove 301 for the lamp holder connecting rod to pass through is provided on the side plate. The groove of the half-groove is connected to the side hole. The rear section of the lamp holder connecting rod passes through the two half-grooves and its end is provided with an anti-detachment end 91. The anti-detachment end is flat and cylindrical. Its outer diameter is larger than the inner diameter of the groove after the two half-grooves are merged. A part of the side hole expands to the rear side of the connecting end at the merged position and forms a recess 31 with the end of the half-groove. The anti-detachment end is provided on the recess.

[0033] Furthermore, a mounting plate 21 is provided on the first end, and a tension adjustment knob 31 is provided on both the second end and the connecting part. In this embodiment, a core hole is provided at the axis of the rotating shaft. The tension adjustment knob includes a screw with a handle and a nut. The nut is sleeved on the screw, and the screw passes through the core hole. The outer wall of the first end or the mounting plate is between the handle and the nut. By rotating the handle, the tightness of the first end or the connecting part can be changed, thereby realizing the stability adjustment of the first end or the connecting part.

[0034] In this embodiment, the rotation of the first, second, third, and fourth connecting rods is achieved through a rotating shaft. These rods are formed from bent metal plates into rectangular or seamless tubes, offering advantages such as ease of processing. A tubular design would increase design complexity. Furthermore, the rectangular tube design increases the contact area with the hand, providing greater stability during grip. A tubular design would reduce the contact area, leading to instability. This design also prevents the slider from easily rubbing against the inner walls of the second and fourth connecting rods. This solution cleverly conceals the spring, minimizing its space-consuming function and preventing injury during use. The internal spring design also protects the user, resulting in a cleaner and more aesthetically pleasing overall appearance. The connecting parts, first end, second end, first connecting rod, second connecting rod, third connecting rod, and fourth connecting rod are made of ordinary carbon steel, a relatively inexpensive material that reduces design costs. Surface polishing removes burrs, scratches, and unevenness, creating a smooth surface, reducing bacterial growth, and improving the product's appearance. Meanwhile, the concealed design of the first and second springs reduces contamination caused by exposed springs, making it easier to disinfect and sterilize, and meeting the hygiene requirements of medical devices. Exposed springs increase the difficulty of cleaning and are not conducive to disinfection.

[0035] The lamp arm is designed with rectangular wire holes to ensure that the wires are hidden inside the arm structure. Specifically, in embodiment one, the wire holes are designed at both ends of the top surface of the first connecting rod and both ends of the top surface of the fourth connecting rod. The wires can enter from the wire hole at the position of the fourth connecting rod near the first end, then pass through the inner cavity of the fourth connecting rod and out from the other end, and then pass through the connecting part (the gap between the third and fourth connecting rods and the connecting part, and the gap formed between the first and third connecting rods and the connecting part). Then, the wire enters the inner cavity of the first connecting rod through the threading hole at the contact section between the first connecting rod and the connecting part, and then exits from the other end. In the design of Embodiment 2, the threading holes are designed at both ends of the top surface of the first connecting rod and the top surface of the third connecting rod is connected. The wire enters from the threading hole at the position of the third connecting rod near the first end, and then exits from the other end. Then, it enters from the threading hole across the connecting part and then from the threading hole at the section of the first connecting rod near the connecting part, and then exits from the other end. If necessary, a dust cover can also be provided at the position of the threading hole. The dust cover has holes for the wire to pass through.

[0036] After processing, surface dust needs to be wiped away. Depending on the needs, physical disinfection methods can be used, such as high-temperature disinfection or ultraviolet disinfection. Alternatively, chemical disinfection can be employed, using chemical disinfectants that meet the requirements for medical device disinfection. High-pressure steam sterilization can also be used.

[0037] Alternatively, a bactericidal layer can be applied to the surface of the connecting arm. For example, an antibacterial material, such as nano-silver, can be applied to the surface of the connecting arm by spraying or electroplating. The antibacterial coating can effectively prevent bacterial growth for a long time, reducing the frequency of cleaning and disinfection.

[0038] In terms of manufacturing process, mature metal sheet bending technology enables standardized production of connecting rods. This process not only offers high processing speed but also high material utilization, significantly reducing manufacturing costs. Modular manufacturing is employed, with all connecting rods and elastic components using standardized parts, facilitating rapid assembly and replacement, reducing production complexity and maintenance costs. In terms of design, the use of concealed springs and sliders reduces the need for external connectors, lowering manufacturing complexity and costs. The sliders can be made of lower-grade stainless steel with a smooth surface or PTFE. To reduce friction, a low-friction coefficient material, such as PTFE, is coated on the inner walls of the second and fourth connecting rods to reduce friction with the sliders. Optimized structural design reduces the number of unnecessary parts, lowering material procurement and processing costs.

[0039] Concealed springs not only eliminate the risk of pinching fingers but also provide a better aesthetic experience; these factors directly impact the device's acceptance and market competitiveness. Using elastic elements to enable forearm and buttock rotation further enhances the device's operational flexibility. This improvement not only meets basic functional requirements but also provides greater convenience for specific medical applications, aligning with practical application needs. The concealed spring design avoids corrosion and damage caused by exposed springs, reducing the frequency of maintenance and replacement, thereby lowering long-term operating costs.

Claims

1. A lamp support arm structure, characterized in that: The device includes a connecting part, a first connecting rod, a second connecting rod, a third connecting rod, a fourth connecting rod, a first end, and a second end. The two ends of the first and second connecting rods are rotatably connected to the second end and one side of the connecting part, respectively. The two ends of the third and fourth connecting rods are rotatably connected to the first end and the other side of the connecting part, respectively. The distance between the point where the first connecting rod rotates and the point where the third connecting rod rotates and the point where the third connecting rod rotates and the point where the third connecting rod rotates and the point where the third connecting rod rotates and the point where the fourth ...

2. The lamp support structure according to claim 1, characterized in that: The first connecting rod, the second connecting rod, the third connecting rod, and the fourth connecting rod are all made of metal plates bent into rectangular tubes or seamless rectangular tubes.

3. A lamp support structure according to claim 1 or 2, characterized in that: The first connecting rod has a first opening hole on its bottom surface near the connecting part, and the second connecting rod has a second opening hole on its top surface near the connecting part and a third opening hole on its other end. An elastic element is hidden inside the second connecting rod. The elastic element includes a first spring and a slider. The front end of the first spring has a first front pull hook that hooks onto the third opening hole. The rear end of the first spring has a first rear pull hook that hooks onto one side of the slider. The other side of the slider is hooked to one end of a double-headed pull hook. The other end of the double-headed pull hook passes through the second opening hole and hooks onto the first opening hole.

4. The lamp support arm structure according to claim 3, characterized in that: The third connecting rod has a fourth opening hole on its bottom surface near the first end, a fifth opening hole on its top surface near the first end, and a sixth opening hole on its other end. An elastic element is hidden inside the fourth connecting rod. The elastic element includes a second spring and a slider. The front end of the second spring has a second front pull hook that hooks onto the sixth opening hole. The rear end of the second spring has a second rear pull hook that hooks onto one side of the slider. The other side of the slider is hooked to one end of a double-headed pull hook. The other end of the double-headed pull hook passes through the fifth opening hole and hooks onto the fourth opening hole.

5. The lamp support arm structure according to claim 4, characterized in that: A lamp head connecting rod is provided on the front side of the second end, a column groove is provided on the first end for accommodating the rear section of the lamp head connecting rod, a stop block is provided on the bottom surface of the second end for blocking the rear section of the lamp head connecting rod, an avoidance ring groove matching the stop block is provided on the rear section of the lamp head connecting rod, and an adjustment screw knob is provided on the top surface of the second end for adjusting the rotation of the lamp head connecting rod.

6. A lamp support structure according to claim 1 or 2, characterized in that: The first connecting rod has a first opening hole at one end of its bottom surface near the connecting part, the second connecting rod has a second opening hole at one end of its top surface near the connecting part, and a third opening hole at the other end. An elastic element is hidden inside the second connecting rod. The elastic element includes a first spring. The front end of the first spring has a first front pull hook that hooks onto the third opening hole. The rear end of the first spring has a first rear pull hook with an inclined section that passes through the second opening hole and hooks onto the first opening hole.

7. The lamp support arm structure according to claim 6, characterized in that: The top surface of the third connecting rod near the bottom of the first end is provided with a fourth opening hole, the top surface of the third connecting rod near the first end is provided with a fifth opening hole, and the other end is provided with a sixth opening hole. A second spring is hidden inside the fourth connecting rod. The front end of the second spring is provided with a second front pull hook, which is hooked at the sixth opening hole. The rear end of the second spring is provided with a second rear pull hook with an inclined section. The rear end of the second spring passes through the fifth opening hole through the inclined section and hooks at the fourth opening hole.

8. The lamp support arm structure according to claim 7, characterized in that: The first end has two side plates close to each other. The ends of the first connecting rod and the second connecting rod are located between the two side plates and are rotatably connected by a rotating shaft. The two side plates have outwardly convex arc-shaped portions in front away from the rotating shaft. A side hole is provided in the middle of each of the two outwardly convex arc-shaped portions. The front of the two side plates merge to form a connecting end. A lamp holder connecting rod is rotatably connected inside the connecting end. The side plates have a semi-slit groove for the lamp holder connecting rod to pass through. The slot of the semi-slit groove is connected to the side hole. The rear section of the lamp holder connecting rod passes through the two semi-slit grooves and its end is provided with an anti-detachment end. A part of the side hole expands to the rear side of the connecting end at the merged position and forms a concave platform with the end of the semi-slit groove. The anti-detachment end is provided on the concave platform.

9. The lamp support arm structure according to claim 8, characterized in that: The first end is provided with a mounting plate, and the second end and the connecting part are both provided with tension adjustment knobs.

10. The lamp support arm structure according to claim 1, characterized in that: When the forearm and rear arm rotate and fold, the elastic element in the second connecting rod is in a fully stretched state, and the elastic element in the fourth connecting rod is in a slightly stretched state; when the forearm and rear arm rotate and open, the elastic element in the second connecting rod is in a slightly stretched state, and the elastic element in the fourth connecting rod is in a fully stretched state.

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