Connecting structure of stress transverse rod and stress longitudinal rod of rotating frame of electric bed
By adding the reinforced structure of limit sheet metal parts and limit pins at the intersection of the electric bed rotor frame and the stressed longitudinal bar, the problems of loose connections, insufficient noise and mechanical performance are solved, and a more solid structure is achieved , stable and efficient connection effect.
Patent Information
- Application Number
- CN202421437472.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-21
- Publication Date
- 2025-02-21
- Estimated Expiration
- 2034-06-21
AI Technical Summary
The connecting structure of the existing electric bed rotor frame is loose, noise generation and mechanical properties are insufficient.
The reinforcement structure is added at the intersection of the stressed crossbar and the stressed longitudinal bar, including fixing the limit sheet metal on one rod, fixing the limit pin on the other rod, and making the limit sheet metal and limit pins Fix each other to enhance the firmness and stability of the connection.
By adding a reinforcement structure, the firmness, stability and mechanical properties of the intersection of the stressed crossbar and the stressed crossbar are improved, avoiding noise generation and enhancing the overall rigidity and strength.
Smart Images
Figure CN222510290U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of beds, in particular to a connection structure of a stressed cross bar and a stressed longitudinal bar of a rotating frame of an electric bed. Background Art
[0002] As people's quality of life improves, the functional requirements for beds are getting higher and higher. For example, before going to bed, people generally hope to read, watch TV or use their mobile phones in a semi-reclining or sitting position, while when falling asleep, they hope to lie flat. Therefore, the back frame with the backboard fixed and the leg frame with the leg boards fixed are generally designed to be rotating frames that rotate around their own hinge axes or rotation axes, so that they can rise to a semi-reclining or sitting position or descend to a lying position under the drive of a linear actuator such as an electric push rod.
[0003] In the prior art, a rotating frame driven by a linear actuator generally adopts a cross bar hinged to one end of the linear actuator, such as the free end of a push rod. The cross bar is fixedly connected to a longitudinal bar, generally called a load-bearing cross bar and a load-bearing longitudinal bar, and the load-bearing longitudinal bar plays the role of a rotating arm. One end of the load-bearing longitudinal bar is hinged to a fixed bed frame, such as a longitudinal bar of a frame of a fixed bed frame. The load-bearing cross bar and the load-bearing longitudinal bar of the rotating frame bear the pressure of the human body load when rising or falling around the hinge axis of the load-bearing longitudinal bar and the fixed bed frame.
[0004] Under the premise of ensuring the required rigidity and strength, in order to facilitate transportation and save material costs, the rotating bed frame in the prior art is generally made of metal pipes such as rectangular steel pipes, and a bolt and nut are generally used to fix the cross bar and the longitudinal bar at the intersection. However, there is a common shortcoming in the connection structure of the cross bar and the longitudinal bar of the electric bed rotating frame: when the linear actuator drives the cross bar and the longitudinal bar or the arm is driven by the cross bar to rise or fall around its own hinge axis, the human body's load gravity is entirely borne by a bolt at the intersection of the cross bar and the longitudinal bar, which can easily deform the rectangular metal pipe at the intersection and increase the gap, which not only generates noise during the rising or falling movement, but also loosens the connection between the cross bar and the longitudinal bar, affecting the firmness, stability and mechanical properties of the connection. Utility Model Content
[0005] The technical problem to be solved by the utility model is to provide a connection structure of the stressed cross bar and the stressed longitudinal bar of the electric bed rotating frame, which has a firm and stable connection at the intersection of the stressed cross bar and the stressed longitudinal bar and can prevent noise from being generated during the lifting process.
[0006] The technical solution of the utility model is to provide a connection structure of the stressed cross bar and the stressed longitudinal bar of the rotating frame of the electric bed, including bolts and nuts for fastening at the intersection of the stressed cross bar and the stressed longitudinal bar; and also including at least one reinforcement structure arranged at the intersection of the stressed cross bar and the stressed longitudinal bar: a limiting sheet metal is fixed on one of the stressed cross bar and the stressed longitudinal bar at the intersection, and a limiting pin is fixed on the other bar, and the limiting sheet metal and the limiting pin are fixed to each other.
[0007] After adopting the above structure, the connection structure of the stressed cross bar and the stressed longitudinal bar of the electric bed rotating frame of the utility model has the following advantages: since a reinforcement structure composed of a limit sheet metal part and a limit pin that are interlocked with each other is added to the stressed cross bar and the stressed longitudinal bar at the intersection, and the limit sheet metal part and the limit pin are rigidly fixed, the linear actuator drives the stressed cross bar and drives the stressed longitudinal bar or the swing arm to rise or fall around its own hinge axis through the stressed cross bar. During the process, the load gravity of the human body is basically borne by the reinforcement structure at the intersection of the stressed cross bar and the stressed longitudinal bar, and the bolts therein play a greater role in fixing the stressed cross bar and the stressed longitudinal bar as a whole. In this way, the stressed cross bar and the stressed longitudinal bar at the intersection, such as rectangular metal tubes, will not be deformed, and the gap will not be increased. Noise will not be generated during the movement of the rotating frame rising or falling. At the same time, the firmness, stability and mechanical properties of the connection at the intersection, i.e. the connection, of the stressed cross bar and the stressed longitudinal bar are greatly improved.
[0008] Furthermore, the limiting sheet metal part has a U-shaped groove, and the U-shaped groove and the limiting pin are engaged with each other. After adopting the above specific reinforcement structure, the installation of the reinforcement structure is more convenient, and the firmness, stability and mechanical properties of the connection between the stressed cross bar and the stressed longitudinal bar are further improved.
[0009] Furthermore, the limit sheet metal is fixed on the stressed cross bar at the intersection, the limit pin is fixed on the stressed longitudinal bar at the intersection, and the portion of the limit pin protruding from the stressed longitudinal bar is inserted through the opening and snapped into the U-shaped groove of the limit sheet metal. After adopting the above structure, the limit sheet metal can be fixed on the stressed cross bar in advance, and the limit pin can be fixed on the stressed longitudinal bar in advance. During installation, the portion of the limit pin on the stressed longitudinal bar protruding from the stressed longitudinal bar is inserted into the U-shaped groove from the opening horizontally, and then the stressed longitudinal bar is screwed and fixed to the stressed cross bar and other bars of the rotating frame by bolts and nuts. This makes the installation of the reinforced structure more convenient, and further improves the firmness, stability and mechanical properties of the connection between the stressed cross bar and the stressed longitudinal bar.
[0010] Furthermore, the position-limiting sheet metal part is an L-shaped plate, the first plate of the L-shaped plate is fixed to the bottom plate of the rectangular metal tube of the load-bearing cross bar, and the second plate of the L-shaped plate is provided with a U-shaped groove. With the above structure, the structure of the position-limiting sheet metal part is more solid and reliable, with better rigidity and stronger mechanical properties.
[0011] Furthermore, the outer end of the limit pin has a shoulder, and the outer and inner plates of the rectangular metal tube of the longitudinal rod are provided with limit pin holes, and the limit pin is inserted from the outer plate to the inner plate and interference fits in the two limit pin holes. After adopting the above structure, the fixing process of the limit pin and the rectangular metal tube of the longitudinal rod is simpler and more convenient, and its fixing structure is also stronger and more reliable, with better rigidity and better mechanical properties.
[0012] Furthermore, two reinforcement structures are provided, which are arranged at the intersection of the stressed cross bar and the stressed longitudinal bar. After adopting the above structure, when the linear actuator drives the stressed cross bar and drives the two stressed longitudinal bars or the swing arms to rise or fall around their own hinge axis, the load gravity of the human body is basically borne by the reinforcement structure at the two intersections of the stressed cross bar and the stressed longitudinal bar, which further prevents the deformation of the intersection of the stressed cross bar and the stressed longitudinal bar, such as the intersection of two rectangular metal tubes, and further prevents the increase of the gap, and basically avoids the noise of the movement process of the rotating frame rising or falling, and at the same time further improves the firmness, stability and mechanical properties of the connection at the intersection of the stressed cross bar and the two stressed longitudinal bars, i.e. the connection. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Figure 1 This is a three-dimensional structural diagram of the utility model when the connecting structure is applied to an electric bed (the back plate and leg plate are omitted, and the following Figure 2-Figure 7 Same).
[0014] Figure 2 yes Figure 1 Schematic diagram of the enlarged structure of A.
[0015] Figure 3 yes Figure 1 The three-dimensional structure diagram of a reinforcement structure of the utility model is exploded Figure 1 .
[0016] Figure 4 yes Figure 3 Schematic diagram of the enlarged structure of B.
[0017] Figure 5 yes Figure 3 Schematic diagram of the enlarged structure of C in the figure.
[0018] Figure 6 yes Figure 1 The three-dimensional structure diagram of a reinforcement structure of the utility model is exploded Figure 2 .
[0019] Figure 7 yes Figure 6 Schematic diagram of the enlarged structure of D in the figure.
[0020] As shown in the figure:
[0021] 1. Bed frame assembly, 11. Rotating frame, 111. Force-bearing cross bar, 1111. Bottom plate, 112. Force-bearing longitudinal bar, 1121. Outer plate, 1122. Inner plate, 11221. Limit pin through hole, 12. Fixed bed frame, 121. Frame longitudinal bar, 13. Hinge shaft;
[0022] 2. Linear actuator, 21. Housing, 22. Driving rod;
[0023] 3. Bolts and nuts;
[0024] 4. Reinforcement structure, 41. L-shaped plate, 411. First plate, 412. Second plate, 4121. U-shaped groove, 41211. Notch, 42. Limit pin, 421. Shoulder, 422. Part of the limit pin protruding from the load-bearing longitudinal rod. DETAILED DESCRIPTION
[0025] The specific implementation methods of the present invention are further described below in conjunction with the accompanying drawings. It should be noted that the description of these specific implementation methods is used to help understand the present invention, but does not constitute a limitation of the present invention. In addition, the technical features involved in each specific implementation method of the present invention described below can be combined with each other as long as they do not conflict with each other.
[0026] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 7 shown.
[0027] The electric bed of the prior art includes a fixed bed frame 12 and a linear actuator 2 such as an electric push rod and a rotating frame 11, wherein the rotating frame 11 is such as a backboard frame for fixing a backboard. The housing 21 of the linear actuator 2 is generally fixed to the fixed bed frame 12, such as the housing of the electric push rod. The driving rod 22 of the linear actuator 2 is generally hinged to the force-bearing crossbar 111 of the rotating frame 11, such as the free end of the electric push rod. The force-bearing crossbar 111 is fixedly connected to the force-bearing longitudinal rod 112. The force-bearing longitudinal rod 112 plays the role of a swing arm, that is, 112 is also called a swing arm. One end of the force-bearing longitudinal rod 112 is hinged to the fixed bed frame 12 near the end of the fixed bed frame 12. The force-bearing crossbar 111 and the force-bearing longitudinal rod 112 of the rotating frame 11 bear the pressure of the human body load when the body rises or falls around the axis of the hinge shaft 13 of the force-bearing longitudinal rod 112 and the fixed bed frame 12. And under the premise of ensuring the required rigidity and strength, in order to facilitate transportation and save material costs, the rotating bed frame of the prior art is generally made of rectangular metal tubes, and a bolt and nut 3 is generally used to fix the intersection of the stressed cross bar 111 and the stressed longitudinal bar 112 mentioned above. The connection structure of the stressed cross bar and the stressed longitudinal bar of the rotating frame of the electric bed of the utility model includes a bolt and nut 3 for fastening at the intersection of the stressed cross bar 111 and the stressed longitudinal bar 112, such as one intersection or one intersection. For the convenience of expression, the rotating frame 11 and the fixed bed frame 12 mentioned above are collectively referred to as a bed frame assembly 1. The hinge shaft 13 is also called a pivot shaft or a rotating shaft, and the stressed longitudinal bar 112 is hinged to the fixed bed frame 12, such as one end close to the fixed bed frame 12, such as hinged to a side frame longitudinal bar 121 of the fixed bed frame 12. The above is the prior art.
[0028] The inventive points of the utility model are as follows.
[0029] The connection structure of the stressed cross bar and the stressed longitudinal bar of the electric bed rotating frame of the utility model also includes at least one reinforcing structure 4 arranged at the intersection of the stressed cross bar 111 and the stressed longitudinal bar 112: a limited sheet metal is fixed on one of the stressed cross bar 111 and the stressed longitudinal bar 112 at the intersection, and a limited pin 42 is fixed on the other bar, and the limited sheet metal and the limited pin 42 are fixed to each other. The reinforcing structure 4 can also be called a reinforcing assembly, or a reinforcing unloading structure. The intersection can also be called a connection.
[0030] The limiting sheet metal part, such as the L-shaped plate 41 described below, preferably has a U-shaped groove 4121 , and the U-shaped groove 4121 and the limiting pin 42 are engaged with each other.
[0031] The limiting sheet metal, such as the L-shaped plate 41 described below, is preferably fixed to the stressed cross bar 111 at the intersection, and the limiting pin 42 is preferably fixed to the stressed longitudinal bar 112 at the intersection, and the portion 422 of the limiting pin protruding from the stressed longitudinal bar is inserted through the notch 41211 or opening and is engaged in the U-shaped groove 4121 of the limiting sheet metal, such as the L-shaped plate 41 described below. Of course, it is also possible to fix the limiting sheet metal to the stressed longitudinal bar and the limiting pin to the stressed cross bar, but it is preferred that the limiting sheet metal is fixed to the stressed cross bar 111 at the intersection and the limiting pin 42 is preferably fixed to the stressed longitudinal bar 112 at the intersection.
[0032] The limiting sheet metal part is preferably an L-shaped plate 41 , the first plate 411 of the L-shaped plate 41 is fixed to the bottom plate 1111 of the rectangular metal tube of the load-bearing crossbar 111 , such as by welding, and the second plate 412 of the L-shaped plate 41 is provided with a U-shaped groove 4121 .
[0033] The outer end 42 of the limit pin may be provided with a shoulder 421. The outer plate 1121 and the inner plate 1122 of the rectangular metal tube such as a rectangular steel tube of the longitudinal rod 112 are provided with limit pin holes 11221. The limit pin 42 is inserted from the outer plate 1121 to the inner plate 1122 and is interference fit in the two limit pin holes 11221. Of course, for the sake of double insurance, spot welding can also be performed between the limit pin 42 and the rectangular metal tube of the longitudinal rod 112. The shoulder 421 is also called the big head.
[0034] When the rotating frame 11 is lying flat such as in a horizontal state, the notch 41211 of the U-shaped groove 4121 can face upward, and the two entrances of the U-shaped groove can be chamfered or arc-shaped. During installation, the first plate 411 of the L-shaped plate 41 can be welded to the bottom plate 1111 of the rectangular metal tube of the stressed cross bar 111, such as a rectangular steel tube, in advance, and the limit pin 42 can be interference fit in the two limit pin through holes 11221 of the rectangular metal tube of the stressed longitudinal rod 112, such as a rectangular steel tube, and then the part 422 of the limit pin on the stressed longitudinal rod 112 protruding from the stressed longitudinal rod, such as the part of the limit pin protruding from the rectangular steel tube of the stressed longitudinal rod 112, is inserted horizontally from the notch 41211 into the U-shaped groove 4121, and then the rectangular steel tube of the stressed longitudinal rod 112 and the rectangular steel tube of the stressed cross bar 111 and other rods of the rotating frame 11, such as other longitudinal rectangular steel tubes or other transverse rectangular steel tubes, are screwed and fixed with bolts and nuts 3.
[0035] The stopper sheet metal part and the stopper pin are fixed to each other. In addition to the above-mentioned structure where the U-shaped groove and the stopper pin engage with each other, the stopper pin can also be fixed to each other by being laterally inserted into the stopper pin through hole of the stopper sheet metal part. Alternatively, the stopper pin can be laterally inserted into the stopper pin through hole of the stopper sheet metal part and then fixed by screwing a nut with an external thread on the end of the stopper pin.
[0036] The limiting sheet metal part can also be a zigzag plate or a Z-shaped plate, etc. The L-shaped plate can be called an L-shaped block, the zigzag plate can be called a zigzag block, and the zigzag plate can be called a zigzag block.
[0037] The reinforcing structures 4 are provided with two, which are arranged at the intersection of the stressed cross bar 111 and the stressed longitudinal bar 112. That is, the reinforcing structures 4 are preferably symmetrically arranged at the intersection of the rectangular steel tube of the stressed cross bar 111 and the rectangular steel tubes of the two stressed longitudinal bars 112. The free end of the driving rod 22 of the linear actuator 2, such as the electric push rod, is hinged with the rectangular steel tube of the stressed cross bar 111 of the rotating frame 11, and the rectangular steel tube of the stressed cross bar 111 is fixedly connected with the rectangular steel tubes of the two stressed longitudinal bars 112: for example, the rectangular steel tube of the stressed cross bar 111 and the rectangular steel tube of the stressed longitudinal bar 112 are each fixed with a bolt nut 3 at the two intersections, and the two intersections are each fixedly connected with more than one reinforcing structure 4, and one end of the rectangular steel tube of the two stressed longitudinal bars 112, such as the end close to the fixed bed frame 12, is hinged with the fixed bed frame 12, such as the respective frame longitudinal bars 121. When the linear actuator 2 drives the rectangular steel tube of the stressed cross bar 111 and drives the rectangular steel tubes of the two stressed longitudinal bars 112 or the rotating arms to rise or fall around their own hinge shafts 13, the load gravity of the human body is basically borne by the reinforcing structure 4 at the two intersections of the rectangular steel tubes of the stressed cross bar 111 and the rectangular steel tubes of the stressed longitudinal bars 112.
[0038] The linear actuator 2 is also called a linear drive.
[0039] It is not difficult to understand that the intersections or intersection points mentioned above all refer to the intersections or intersection points of the load-bearing horizontal rod 111 and the load-bearing longitudinal rod 112.
[0040] The above unmarked parts, structures or quantities are not shown in the drawings, and some parts are not marked in the drawings. The drawings are only for reference only. If there is any inconsistency between the drawings and the text description or between the drawings, the text description shall prevail.
[0041] The above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. For those skilled in the art, the utility model may have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.
Claims
1. A connecting structure of a stressed cross bar and a stressed longitudinal bar of a rotating frame of an electric bed, comprising bolts and nuts for fastening at the intersection of the stressed cross bar and the stressed longitudinal bar; characterized in that: It also includes at least one reinforcement structure arranged at the intersection of the stressed cross bar and the stressed longitudinal bar: a limiting sheet metal part is fixed on one of the stressed cross bar and the stressed longitudinal bar at the intersection, and a limiting pin is fixed on the other bar, and the limiting sheet metal part and the limiting pin are fixed to each other.
2. The connection structure of the stressed cross bar and the stressed longitudinal bar of the electric bed rotating frame according to claim 1, characterized in that: The limiting sheet metal part is provided with a U-shaped groove, and the U-shaped groove and the limiting pin are engaged with each other.
3. The connection structure of the stressed cross bar and the stressed longitudinal bar of the electric bed rotating frame according to claim 2, characterized in that: The limiting sheet metal is fixed on the stressed horizontal bar at the intersection, the limiting pin is fixed on the stressed longitudinal bar at the intersection, and the portion of the limiting pin protruding from the stressed longitudinal bar is inserted through the opening and engaged in the U-shaped groove of the limiting sheet metal.
4. The connection structure of the stressed cross bar and the stressed longitudinal bar of the electric bed rotating frame according to claim 1, characterized in that: The limiting sheet metal part is an L-shaped plate, the first plate of the L-shaped plate is fixed to the bottom plate of the rectangular metal tube of the load-bearing cross bar, and the second plate of the L-shaped plate is provided with a U-shaped groove.
5. The connection structure of the stressed cross bar and the stressed longitudinal bar of the electric bed rotating frame according to claim 1 or 4, characterized in that: The outer end of the limit pin has a shaft shoulder, and the outer plate and inner plate of the rectangular metal tube of the load-bearing longitudinal rod are both provided with limit pin through holes. The limit pin is inserted from the outer plate to the inner plate and interference fits in the two limit pin through holes.
6. The connection structure of the stressed cross bar and the stressed longitudinal bar of the electric bed rotating frame according to claim 1, characterized in that: The reinforcement structures are provided with two and are respectively arranged at the intersection of the load-bearing transverse rod and the load-bearing longitudinal rod.