CN2842155Y - Constant force spring support with frictional resistance - Google Patents

Abstract

The utility model discloses a constant force spring supporting device with frictional resistance, which comprises a main frame body, wherein the main frame body is provided with two longitudinal long side edges and two transverse short side edges, and the two longitudinal long side edges are provided with chutes with opposite openings; the bearing seat is arranged on the main frame body and close to one transverse short side edge; a constant force spring, which is arranged on the bearing seat and is provided with a connecting end; a support seat which can be reciprocated and is assembled on the sliding groove with the opposite opening, and is provided with a propping device which advances or retreats towards the direction of the main frame body, and the connecting end of the constant force spring is connected with the support seat; an adjustable friction-resisting device is arranged between the support seat capable of reciprocating displacement and the main frame body, and is provided with a propping part which is propped by the propping device; by means of the adjustable friction resisting device, the friction between the adjustable friction resisting device and the main frame body may be regulated to produce proper resistance force and overcome the restoring force of the fixed force spring to position the supported article in the up and down displacement.

Description

Constant force spring support with frictional resistance

technical field

The utility model relates to a constant-force spring supporting device with frictional resistance, in particular to a fixed-force spring with frictional resistance for carrying an object and adjusting the frictional resistance to make the object move up and down at any time. support device.

Background technique

As shown in Fig. 1 and Fig. 2, it is an existing a kind of supporting device for carrying a liquid crystal display 92 object, and positioning at any time when the liquid crystal display 92 object moves up and down. This liquid crystal display supporting device 91 is arranged on A pedestal 93 below a liquid crystal display 92 is used for supporting the display 92 and adjusting the height of the display 92 . The support device 91 includes a frame body 94 , an extension member 95 and a balance member 96 . The inner side of the frame body 94 is defined by two slide rails 941 together to define a sliding slot 942 for a plate-shaped sliding part 951 of the extension member 95 to be set up and down. The balance member 96 has a pivot 961 screwed and fixed on the front outer wall 943 of the frame body 94 , a sleeve 962 rotatably sleeved on the pivot 961 , and a torsion spring 963 wrapped around the sleeve 962 . The torsion elastic piece 963 includes an inner fixing end (not shown in the figure) located at the starting point of the innermost ring and fixedly connected to the surface of the sleeve 962, and an outer fixing end located at the outermost ring and extending and screwed to the lower end of the plate-shaped sliding member 951 end 964, and the torsion spring 963 constantly applies an upward force to the plate-like slider 951 that is balanced with the downward gravity of the display 92 .

In this way, when the user (not shown in the figure) pushes down the extension member 95 to lower the display 92 to a predetermined height, once the user's hand is released from the extension member 95, it will be balanced by the torsion spring 963 , the extension member 95 together with the display 92 automatically stops being positioned at this height without further adjustment. On the contrary, when the user pulls up the extension member 95 with his hand to raise the height of the display 92 , the display 92 can be easily raised to the predetermined height with only a little force.

Generally, the function of this automatic stop positioning is interpreted by force, the gravity of the display 92 plus the frictional resistance provided by the contact between the plate slide 951 and the two slide rails 941 of the frame body 94 is equal to the restoring force of the torsion elastic piece 963, but After a long time, the frictional resistance is gradually insufficient, and the function of automatically stopping positioning will disappear. Therefore, how to make a fixed object with frictional resistance for carrying an object and adjusting the frictional resistance for positioning at any time when the object moves up and down. Force spring supporting device is a subject that can be improved.

Utility model content

The purpose of the utility model is to provide a constant force spring supporting device with frictional resistance for carrying an object, and can adjust the frictional resistance to make the object move up and down.

The utility model has a constant-force spring support device with frictional resistance, which is used to carry an object for positioning at any time when the object moves up and down. It includes a main frame body, and the main frame body has two longitudinal long side edges and two The transverse short side edges, the two longitudinal long side edges are provided with chute openings facing each other; a bearing seat is arranged on a transverse short side edge of the main frame close to one of them; a constant force spring is arranged on the bearing seat On the top, there is a connecting end; a support seat that can move back is assembled on the chute facing the opening, and is provided with a pusher that advances or retreats toward the direction of the main frame body, and the connecting end of the constant force spring It is connected to the support base; an adjustable friction resistance device is located between the reciprocally movable support base and the main frame body, and has a top, which is pressed against by the abutment device; through the adjustable friction resistance The device can adjust the friction relative to the main frame body to generate appropriate resistance and overcome the restoring force of the constant force spring to position at any time.

The function of the utility model can provide a support device with adjustable frictional resistance, which can provide a positioner for any time when the loaded object moves up and down.

Description of drawings

Below in conjunction with accompanying drawing and embodiment the utility model has the fixed force spring supporting device of frictional resistance to be described in detail:

Fig. 1 is the simplified sketch map of existing constant force spring supporting device with frictional resistance;

Fig. 2 is the overall side view schematic diagram of the existing constant force spring supporting device with frictional resistance;

Fig. 3 is a three-dimensional exploded schematic diagram of the first embodiment of the constant force spring supporting device with frictional resistance of the present invention;

Fig. 4 is a three-dimensional schematic diagram of the bearing member and the constant force spring in Fig. 3;

Fig. 5 is a partially enlarged schematic view of the support seat and the adjustable friction device in Fig. 3;

Fig. 6 is a three-dimensional schematic diagram of another possible bearing member and constant force spring;

Fig. 7 is a schematic diagram of the adjustable friction resistance device in Fig. 3 for friction adjustment;

Fig. 8 is a three-dimensional schematic view of the second embodiment of the constant force spring supporting device with frictional resistance of the present invention;

Fig. 9 is a schematic diagram of Fig. 8 for friction adjustment.

have body implementation

Fig. 3 is the first embodiment of the constant force spring supporting device with frictional resistance of the utility model, which is used to carry an object for positioning at any time when the object moves up and down, and includes a main frame body 1, the main frame The body 1 has two longitudinal long side edges 10, 11 and two transverse short side edges 12, 13, and the two longitudinal long side edges 10, 11 are also provided with slide grooves 14, 15 with opposite openings; One transverse short side edge 12 close to the main frame body 1; a certain force spring 3 is arranged on the bearing seat 2 and has a connecting end 30; a reciprocally movable support seat 4 is assembled on the bearing seat 2. At the chute 14 and 15 where the openings are facing each other, there is a pusher 40 that advances or retreats toward the main frame body 1, and the connecting end 30 of the constant force spring 3 is connected to the support seat 4; an adjustable resistance The rubbing device 5 is located on the reciprocally movable support seat 4 and is located between the support seat 4 and the main frame body 1, and has a top 50, which is pressed by the abutment device 40; The device 5 can adjust the friction relative to the main frame body 1 to generate appropriate resistance, overcome the restoring force of the constant force spring, and provide the person for positioning the carried object at any time when it moves up and down. More detailed descriptions are as follows:

The main frame body 1 protrudes in the same direction at the two longitudinal long side edges 10, 11 of a long plate body 16 and bends an L-shaped frame plate 17 downwards relative to each other, and forms with the long plate body 16. There are chute 14,15 with openings facing each other, on a short lateral edge 12 of the long plate body 16, an L-shaped frame plate 18 is protruded and bent, as a stop at one end of chute 14,15, on the The L-shaped frame 18 is connected with the long plate body 16 (including the bending part) and is provided with a frame hole 181, which is close to the frame hole 181. On the long plate body 16, the horizontal frame with the L-shaped frame 18 The board 180 is in a parallel direction, and a bearing seat 2 is arranged horizontally.

Referring to Fig. 4, the top surface of the bearing seat 2 is a concave curved surface 20, and a curved stop edge 21 protrudes upward from the two side edges 200, 201 of the concave curved surface 20, and is parallel to each other. At the side edge 202 of the long plate body 16 of the main frame body 1 close to the concave curved surface 20 , a first elongated groove 22 is formed downwardly from the top surface.

The constant force spring 3 is a coil type plate spring, which has a relatively strong coil recovery force. It is located on the concave curved surface 20, and one end 30 is stretched downward and passes through the first elongated groove. 22, and the two side edges are respectively framed by a curved arc stop edge 21. Of course, the curved arc stop edge 21 does not necessarily exist. Scroll function.

Cooperate with Fig. 5, this supporting base 4 that can move back and forth is in the position close to the middle section of two vertical frame plates 41, 42 that are parallel to each other, and a horizontal frame plate 43 is connected between each other, and this horizontal frame plate 43 connects the two vertical frame plates. Plates 41, 42 are divided into an upper first part 44 and a lower second part 45. The two vertical frame plates 41, 42 are provided with equidistant assembly holes 410, 420, and bolts 412 are used at each assembly hole 410, 420. A rolling device with balls can be assembled and set in the chute 14, 15 with the above-mentioned openings opposite to each other with the rolling device, and the rolling device can be rolled and adjusted in the chute 14, 15, so that the rolling device can be adjusted. The reciprocating supporting seat 4 and the screen assembled on it move up and down almost without friction. Because it is not the focus of this case discussion, and it belongs to the existing drawer slide rail design, no additional drawing explanation is given below. Between the longitudinal rear side edges of the two vertical frame plates of the second part 45 and the rear side edge of the horizontal frame plate 43, a set of boards 46 is connected, and a pair of draw-in slots at an appropriate distance are provided on the set of boards 46. 460, a configuration hole 461 is provided between the draw-in slots 460. This embodiment is a screw hole. A pusher 40 that advances or retreats toward the direction of the main frame body is provided at the configuration hole 461. This embodiment is a screw rod. A pair of positioning columns 47 with an appropriate distance are arranged on the bottom surface of the cross frame plate 43, and each positioning column 47 is concavely provided with a positioning hole 470 toward the front side edge direction, and the above-mentioned constant force spring 3 is stretched downward and passes through the first One end 30 behind the elongated slot 22 is positioned in the pair of positioning holes 470, but it is not necessary to pass through the first elongated slot 22, as shown in Figure 6, if the top surface of the bearing seat 2 is only The concave curved surface 20 is not provided with a slender groove, and the one end 30 of the constant force spring 3 is directly bent across the side edge 202 and pulled down and positioned in the pair of positioning holes 470. On the two longitudinal front side edges of the first part 44, a connecting plate 48 is connected horizontally, and a positioning plate 49 is arranged at the free end of the connecting plate 48 parallel to the assembly plate 46 and is far away from each other. Each connecting plate 48, positioning plate Positioning holes 480, 490 are arranged on the top of the 49, and the carried objects such as screens are assembled in the positioning holes 480, 490.

Referring to Fig. 5 again, the adjustable friction resistance device 5 is longitudinally cut with two slits 510 on a short plate body 51, so that the short plate body 51 forms a top 50 between the two slits 510, on which the top Both sides of 50 respectively form a hook group part 52, and the top edge of each hook group part 52 is horizontally provided with a hook body 53 in the same direction. The two vertical frame plates 41 and 42 of the rolling device provided with the balls in the group of bolts 412 are respectively placed and grouped in the chute 14 and 15 with the openings facing each other. A pair of card slots 460 on the assembly plate 46 of the seat 4 are inserted into the card group for positioning, so that the abutment top 50 is facing the configuration hole 461 between the card slots 460. As shown in FIG. 7 , it can be pushed against by the screw end 400 , and the top 50 will lean forward and rub against the long plate body 16 of the main frame body 1 .

When in use, following the above, the rolling device with balls rolls and adjusts in the chute 14, 15, the reciprocating support seat 4 and the screen assembled on it are almost frictionless. Moving down, when moving down more, that is, the screen drops, and one end 30 of the constant force spring 3 is thus stretched downward, and the constant force spring 3 is in a state of gradually increasing energy storage. At this time, generally three phenomena may occur, one. When the restoring force of the constant force spring 3 is less than the weight sum of the supporting seat 4 that can move back and forth and the screen assembled and carried on it, the constant force spring 3 has no effect, that is to say, the screen is always at the lowest position. It is not what manufacturers or consumers want. Two, when the restoring force of the constant force spring 3 is equal to the weight of the supporting seat 4 that can move back and forth plus the weight of the screen assembled and carried on it, the screen will be positioned at the desired position at any time. This is the most ideal situation required by the manufacturing industry, but it is often not universally applicable to screen combinations of different weights, because a screen with a certain weight needs to be equipped with a constant force spring. Three, when the restoring force of the constant force spring 3 is greater than the weight and the weight of the screen assembled and carried on it, the screen will slowly move up and cannot be positioned at any time. Needed, because can only adopt a kind of constant force spring 3 just can be applicable to the installation of all kinds of screens.

Therefore, as shown in Fig. 7, when the restoring force of the constant force spring 3 is greater than the weight sum of the support seat 4 which can move back and forth plus the screen assembled on it, and the screen will move up by itself, the rotating assembly can move back and forth. The abutment 40 of the displaced support seat 4, that is, the screw, is pushed toward the long plate body 16 of the main frame body 1, and then it can be abutted against the abutting top 50 of the adjustable friction resistance device 5, and the abutting top 50 will rub forward To the long plate body 16 of the main frame body 1, the more the abutment device 40 advances, the greater the friction force will be, until the restoring force of the constant force spring 3 is equal to the support seat 4 that can move back and forth plus the assembly on it. The weight of the mounted screen plus the sum of the frictional force will produce a function that can be positioned at any time. The heavier the screen, the smaller the required frictional force, and the lighter the screen, the greater the required frictional force. , the manufacturing industry can be adjusted in advance, and when the user is using it, it can also be fine-tuned at any time, so that the up and down movement adjustment of the screen is very smooth and can be positioned at any time.

Fig. 8 is the second embodiment of the constant force spring supporting device with frictional resistance of the present invention. It is the first elongated groove 22 which is penetrated downwards from the top surface of the bearing seat 2, and is penetrated at an appropriate distance. There is a second elongated groove 23 parallel to it so that a deformable top block 24 is formed between the first elongated groove 22 and the second elongated groove 23, and the bearing seat 2 is closer to the second elongated groove The side wall 25 of 23 runs through the bearing seat 2 and communicates with the second elongated groove 23 to have a configuration hole 26, which is a screw hole here, and an urging member 27 is provided at the configuration hole 26, which is a screw rod here, so When the recovery force of the above-mentioned constant force spring 3 is too large, the rotating pressing member 27 can be added to advance, enter the second elongated groove 23 and push the deformable top block 24, as shown in Figure 9, so that the first thin The long groove 22 is narrower in shape, and clamped to the constant force spring 3, its restoring force is locked, so that the relevant linked components are not fixed, so that the weight range of the constant force spring 3 applicable to the screen assembly can be More varied and extensive.

To sum up, the utility model can indeed adjust the frictional resistance to position the loaded object at any time when it moves up and down, which is very convenient.

Claims (8)

1. A constant force spring supporting device with frictional resistance, for carrying an object, for positioning at any time when the object moves up and down, it is characterized in that it includes: A main frame body, the main frame body has two longitudinal long side edges and two transverse short side edges, and the two longitudinal long side edges are provided with chute openings facing each other; a bearing seat, located on a short transverse side edge of the main frame body close to it; A constant force spring is located on the bearing seat and has a connecting end; A support base that can move back is assembled on the chute facing the opening, and is provided with a pusher that advances or retreats toward the main frame body, and the connecting end of the constant force spring is connected to the support base; and An adjustable anti-friction device is located between the reciprocally movable support seat and the main frame body, and has a top, which is pushed by the pusher; By adjusting the abutment, it abuts against the abutment of the adjustable friction device, and generates appropriate resistance relative to the friction of the main frame body, overcomes the restoring force of the constant force spring, and provides the loaded object to move up and down positioning at any time. 2. The constant force spring supporting device with frictional resistance as claimed in claim 1, characterized in that: The supporting seat that can move back and forth is provided with a push-off device that advances or retreats toward the direction of the main frame body. A set of boards is provided on the support seat toward the direction of the main frame body. There is a pair of card slots at a distance between the card slots, and a configuration hole is provided between the slots. The abutment is located at the configuration hole, and the adjustable friction resistance device is to cut two slots longitudinally on a short plate body, so that the The short plate body forms a top between the two cut grooves, a hook part is formed on both sides of the top, and a hook body is arranged horizontally on the top edge of each hook part. The adjustable friction device , so that the two hooks are aligned with a pair of card slots on the assembly board of the support seat that can move back and forth, and placed in the card group for positioning, so that the top of the abutment is facing the configuration hole between the card slots, and the abutment device Arrived. 3. The constant force spring supporting device with frictional resistance as claimed in claim 2, characterized in that: The configuration hole is a screw hole, and the resister is a screw rod. 4. The constant force spring supporting device with frictional resistance as claimed in claim 1, 2 or 3, characterized in that: The top surface of the bearing seat is a concave curved surface, and the constant force spring is a coil type plate spring, which is arranged on the concave curved surface, and one end is stretched downward across the concave curved surface It is away from the side edge of the main frame body and is positioned on the support base that can move back and forth. 5. The constant force spring supporting device with frictional resistance as claimed in claim 1, 2 or 3, characterized in that: The bearing seat, the top surface of the bearing seat is a concave curved surface, and at the side edge of the concave curved surface away from the main frame body, there is a first elongated groove penetrating downward from the top surface. The spring, which is a coil-shaped plate spring, is arranged on the concave curved surface, and one end is stretched downward through the first elongated groove and positioned on the supporting seat capable of moving back and forth. 6. The constant force spring supporting device with frictional resistance as claimed in claim 5, characterized in that: The bearing seat has a concave curved surface, and further, a curved stop edge is protruded upward on each side edge, and when the constant force spring is arranged on the concave curved surface, the two side edges are respectively supported by a curved stop edge limited by the frame. 7. The constant force spring supporting device with frictional resistance as claimed in claim 5 or 6, characterized in that: The bearing seat is provided with a first elongated groove through the top surface downwards, and a second elongated groove parallel to it is formed at an appropriate distance, so that a deformable top block is formed between the two elongated grooves , and on the side wall of the bearing seat closer to the second elongated groove, there is a disposing hole passing through the bearing seat and communicating with the second elongated groove, and an urging member is arranged at the disposing hole, and the rotating urging member advances into the The second elongated slot pushes the deformable top block and clamps the constant force spring in the first elongated slot. 8. The constant force spring supporting device with frictional resistance as claimed in claim 7, characterized in that: The configuration hole that runs through the bearing seat and communicates with the second elongated groove is a screw hole, and the urging member arranged in the screw hole is a screw rod.

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