Connecting mechanism and car window balancer

Abstract

The utility model discloses a connecting mechanism and a car window balancer, and belongs to the technical field of balancers. The car window balancer comprises a mounting seat, and the mounting seat comprises a mounting groove. The guide wheel is mounted in the mounting groove; one end of the pull rope is fixedly mounted and wound on the outer wall of the guide wheel, and the pull rope comprises an insertion block fixed at one end of the pull rope; the spring coiling wheel is arranged on one side of the guide wheel; the connecting piece is fixedly mounted on the vehicle window; the sliding groove is formed in one side of the car window. According to the connecting mechanism, the inserting block is inserted into the inlaying groove through the imbedding groove through matching of the inserting block, the inlaying groove and the imbedding groove, installation is completed, the inserting block cannot be separated from the inlaying groove under the non-artificial condition due to the fact that the pull rope which is difficult to deflect is selected, the connecting and installing mode is very simple, the product is more attractive, and the installing effect is excellent.

Description

Technical Field

[0001] The utility model relates to the technical field of balancers, and particularly relates to a connecting mechanism and a window balancer. Background Art

[0002] With the rapid development of the large-scale construction machinery industry, engineering vehicles such as excavators are increasingly widely used at the construction site. Due to the poor working environment of excavators, the windows in the cab often need to be opened for ventilation and heat dissipation or closed to isolate dust. They need to be opened and closed frequently. However, due to the heavy weight of the windows in the excavator cab, a large amount of force is required to open them, and it is difficult to control the force when closing them. Especially when closing, if not careful, the window may suddenly fall, resulting in damage to the window glass and even possible harm to the cab and the operator.

[0003] Some existing window balancers for buffering and balancing the windows of engineering vehicles often use screws to fix the connection part between the coil spring and the traction rope. This connection method is very cumbersome during disassembly when maintenance or component replacement is required, especially in the case of a narrow balancer or rusty screws. In addition, the tightening force of the screws may be uneven due to human factors or material fatigue, which in turn affects the connection stability and safety, and may also cause damage or deformation of the traction rope, thereby affecting the overall structural strength. To solve the above problems, we propose a connecting mechanism and a window balancer. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a connecting mechanism, aiming to solve the problems of cumbersome disassembly, uneven tightening force, and possible damage and deformation of the traction rope caused by the existing screw fixing method for the connection part between the coil spring and the traction rope.

[0005] To solve the above technical problems, the utility model provides a connecting mechanism, including a mounting base, and the mounting base includes a mounting groove;

[0006] A guide wheel, the guide wheel is installed in the mounting groove, and it includes a coil spring contraction area and a rope winding area arranged on one side of the coil spring contraction area, and the two are separated by a side panel;

[0007] A pull rope, one end of the pull rope is fixedly installed and wound around the outer wall of the guide wheel, and it includes a plug fixed to one end thereof;

[0008] The guide wheel includes an inlay groove arranged on one side of the rope winding area and a placement groove arranged on one side of the inlay groove;

[0009] The plug is installed in the inlay groove.

[0010] Preferably, the included angle between the center line of the insertion groove and the inlay groove is 135°, and when the pull rope is installed in the inlay groove through the insertion block, the included angle between the rope outlet direction of the insertion block and the insertion groove is 45°.

[0011] Preferably, the pull rope is a steel wire rope, which can be bent but is difficult to deflect.

[0012] Preferably, the mounting seat further includes a plurality of mounting holes provided on its outer surface, a pin hole provided on the outer surface of the mounting seat for mounting a guide wheel, and a limiting hole opened at the rope outlet of the pull rope.

[0013] Preferably, the guide wheel is installed in the mounting groove through a pin shaft, so that it can rotate around the pin shaft in the mounting groove.

[0014] The present utility model further provides a window balancer, which includes a connecting mechanism; and a spring reel, the spring reel is arranged on one side of the guide wheel;

[0015] A connecting member, the connecting member is connected to the other end of the pull rope, and the connecting member is fixedly installed on the window.

[0016] Preferably, the spring reel includes a spring wound around its outer wall, one end of the spring is fixed to the outer wall of the spring reel, and after winding several turns, the other end is fixedly installed on the outer wall of the guide wheel.

[0017] Compared with the prior art, the beneficial effects of the present utility model are:

[0018] 1. Through the cooperation of the insertion block, the inlay groove and the insertion groove of the connecting mechanism and the window balancer of the present utility model, the insertion block is inserted into the inlay groove through the insertion groove, and the installation is completed. Since a pull rope that is difficult to deflect is selected, the insertion block cannot be disengaged from the inlay groove under non-artificial conditions. This installation method is very simple, the product is more beautiful, and the installation effect is excellent.

[0019] 2. The window balancer of the present utility model utilizes the elastic force of the spring. While winding the pull rope through the guide wheel, it drives the spring reel to deform, forming a resilience for buffering. When the window is open, the pulling force of the spring pulls the window to maintain balance. When closing the window, it can also play an insurance role to prevent the window from suddenly falling and causing harm to the cab and the operator. Description of the Drawings

[0020] Figure 1 is a schematic structural diagram of a window balancer provided by the present utility model;

[0021] Figure 2 is a schematic structural diagram of the connection method of a connecting mechanism provided by the present utility model;

[0022] Figure 3It is a schematic structural diagram of a connection mechanism provided by the present utility model;

[0023] Figure 4 It is an installation schematic diagram of a connection mechanism and a window balancer provided by the present utility model;

[0024] In the figure: 1. mounting base; 101. mounting groove; 102. mounting hole; 103. pin hole; 104. limiting hole; 2. guide wheel; 201. spring retraction area; 202. rope winding area; 203. side panel; 204. inlay groove; 205. placement groove; 3. pull rope; 301. insertion block; 4. pin shaft; 5. spring reel; 501. spring; 6. connecting piece. Specific embodiments

[0025] The following further detailed description is made on the present utility model in conjunction with the accompanying drawings and specific embodiments. The advantages and features of the present utility model will be clearer according to the following description and the claims. It should be noted that the accompanying drawings are all in a very simplified form and use non-precise scales, only for the purpose of facilitating and clearly assisting in explaining the purpose of the embodiments of the present utility model.

[0026] In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be understood as a limitation of the present utility model. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first", "second", etc. may explicitly or implicitly include one or more of such features. In the description of the present utility model, unless otherwise specified, the meaning of "a plurality" is two or more.

[0027] In the description of the present utility model, it should be noted that unless otherwise clearly defined and limited, the terms "installation", "connection", "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0028] Embodiment 1

[0029] This embodiment provides a connecting mechanism. Please refer to Figures 1 to 4 , which includes a mounting base 1. The mounting base 1 includes a mounting groove 101; a guide wheel 2, which is installed in the mounting groove 101 and includes a spring retraction area 201 and a rope winding area 202 provided on one side of the spring retraction area 201, and the two are separated by a side panel 203; a pulling rope 3, one end of the pulling rope 3 is fixedly installed and wound around the outer wall of the guide wheel 2, and it includes a plug 301 fixed to one end thereof; the guide wheel 2 includes an inlay groove 204 provided on one side of the rope winding area 202 and a placement groove 205 provided on one side of the inlay groove 204; the plug 301 is installed in the inlay groove 204.

[0030] The included angle between the center line of the placement groove 205 and the inlay groove 204 is 135°. When the pulling rope 3 is installed with the plug 301 in the inlay groove 204, the included angle between the rope outlet direction of the plug 301 and the placement groove 205 is 45°; the pulling rope 3 is a steel wire rope, which can be bent but is difficult to deflect; the mounting base 1 further includes a plurality of mounting holes 102 provided on its outer surface, a pin hole 103 provided on the outer surface of the mounting base 1 for installing the guide wheel 2, and a limiting hole 104 opened at the outlet of the pulling rope 3; the guide wheel 2 is installed in the mounting groove 101 through a pin shaft 4, so that it can rotate around the pin shaft 4 in the mounting groove 101.

[0031] It should be noted that the area separated by the side panel 203 next to the spring retraction area 201 is the rope winding area 202. The pulling rope 3 is a plastic-coated galvanized steel wire rope, and the plastic coating is nylon, which has the characteristics of high strength, high toughness and beauty. It can be bent but is difficult to deflect. The pulling rope 3 is wound around the rope winding area 202

[0032] Preferably, the end of the pulling rope 3 is fixedly connected with a plug 301. The plug 301 is an elongated cuboid block, and its volume is slightly smaller than the inlay groove 204. The plug 301 can be easily placed into the inlay groove 204. One side of the inlay groove 204 communicates with a placement groove 205. As Figure 4 shown, the included angle between the center line of the placement groove 205 and the center line of the inlay groove 204 is 135°. During installation, the included angle between the rope outlet direction of the plug 401 and the placement groove 205 is 45°. Through this design, the plug 301 cannot be disengaged from the inlay groove 204 under non-artificial conditions. When it needs to be released, the pulling rope 3 needs to be pulled from the bottom of the placement groove 205 to above the placement groove 205, and the inlay between the two will be released immediately.

[0033] Preferably, the installation process is as follows: Pass the pulling rope 3 through the bottom of the placement groove 205, inlay the plug 301 into the inlay groove 204, and then tighten the pulling rope 3. At this time, their positional relationship is as Figure 3As shown, the connection is completed. Subsequently, the pulling rope 3 is wound around the rope winding area 202 for 7 to 8 turns. The number of winding turns can be adjusted according to the height of the cab window. Just leave enough margin. Then, the other end of the pulling rope 4 passes through the limit hole 104.

[0034] In summary, the connection mechanism of the present utility model, through the cooperation of the insertion block, the inlay groove and the placement groove, inserts the insertion block into the inlay groove through the placement groove, and the installation is completed. Since a pulling rope that is difficult to deflect is selected, the insertion block cannot be separated from the inlay groove under non-artificial circumstances. This installation method is very simple, the product is more beautiful, and the installation effect is excellent.

[0035] Embodiment 2

[0036] This embodiment provides a window balancer. Please refer to Figures 1 to 4 , including a connection mechanism; and, a coil spring wheel 5, the coil spring wheel 5 is arranged on one side of the guide wheel 2; a connecting member 6, the connecting member 6 is connected to the other end of the pulling rope 3, and the connecting member 6 is fixedly installed on the window. The coil spring wheel 5 includes a coil spring 501 wound around its outer wall. One end of the coil spring 501 is fixed to the outer wall of the coil spring wheel 5. After winding several turns, the other end is fixedly installed on the outer wall of the guide wheel 2.

[0037] Preferably, there are two coil spring wheels 3 of the coil spring balancer in this embodiment, one in front and one behind on the front side of the guide wheel 2. The outer circle of the coil spring wheel 5 is surrounded by a coil spring 501. The coil spring 501 uses a stainless steel strip material with a thickness of 0.21 mm. By controlling the material of the coil spring 501 and the effective number of winding turns, the coil spring tension can be controlled, that is, the balance strength of the balancer, and the pressure required to break the balance of the balancer. In this example, the pulling force required to overcome the two coil spring wheels 5 ranges from 50 N to 60 N. This is also the limit pulling force that the excavating machine can exert on the window during work or other special circumstances. The balancer is sufficient to overcome these pulling forces to provide buffering for the window.

[0038] Preferably, the material of the mounting seat 1 is selected as a Q195 profile steel plate with a thickness of 2 mm. Four mounting holes 102 are opened on the contact surface between the mounting seat 1 and the mounting place, and are positioned and fixed in the cab with bolts. Three pin holes 103 are penetrated through the mounting seat 1, and the pin holes 103 respectively correspond to the first coil spring wheel 5, the guide wheel 2, and the second coil spring wheel 5 in sequence. These rollers are limited by the pin shaft 4 so that they can rotate freely in the mounting groove 101.

[0039] Preferably, two pairs of threaded holes are provided in the coil spring contraction area 201. They are used to fix the coil springs 501 on both sides. The fixing method is riveting or screw connection. The widths of the coil springs 501 of the coil spring wheels 5 on both sides are the same as the width of the coil spring contraction area 201 and correspond to each other, which can avoid the tensile error caused by misalignment of the coil springs 501. The coil springs 501 at the connection parts of the coil springs 501 on both sides and the guide wheel 2 are parallel to each other, so that the tensile forces of the coil springs 501 on both sides received by the guide wheel 2 during rotation are uniform. Their positions are as Figure 2 shown.

[0040] Preferably, the outer circle of the pull rope 3 is wrapped with a rubber sleeve for protection to prevent the pull rope 3 from being worn and damaged during use, and to extend the service life of the pull rope. A chute is fixedly installed on one side of the window at the top of the cab. The pull rope 3 passes through the chute and extends to the window position. It can pass through directly or slide in the chute by adding a slider or roller to the pull rope 3, so that the connecting piece 6 can be fixedly installed with the window. The chute can provide support for the pull rope 3 to ensure stability, help the pull rope 3 move on a specific track or path, ensure its directionality, avoid deviating from the predetermined track, and can also reduce the noise generated when the pull rope 3 moves.

[0041] In summary, the window balancer of the present utility model utilizes the elastic force of the coil spring to drive the deformation of the coil spring wheel while winding the pull rope through the guide wheel, forming a resilience for buffering. When the window is open, the tensile force of the coil spring pulls the window to maintain balance. When closing the window, it can also play an insurance role to prevent the window from suddenly falling and causing harm to the cab and the operator.

[0042] The above description is only a description of the preferred embodiments of the present utility model, and does not limit the scope of the present utility model in any way. Any changes and modifications made by those of ordinary skill in the field of the present utility model according to the above disclosure are within the protection scope of the claims.

Claims

1. A connecting mechanism, characterized in that: include A mounting seat (1), the mounting seat (1) comprising a mounting groove (101); A guide wheel (2), the guide wheel (2) being installed in the installation groove (101), comprising a coil spring contraction area (201), and a rope winding area (202) arranged on one side of the coil spring contraction area (201), the two being separated by a side panel (203); A pull rope (3), one end of which is fixedly mounted and wound around the outer wall of the guide wheel (2), and comprises an insert block (301) fixed to one end thereof; The guide wheel (2) comprises an inlay groove (204) arranged on one side of the rope winding area (202), and an insertion groove (205) arranged on one side of the inlay groove (204); The insert block (301) is installed in the inlay groove (204).

2. A connecting mechanism according to claim 1, characterized in that: The angle between the center line of the insertion groove (205) and the embedding groove (204) is 135°, and when the pull rope (3) is installed through the insert block (301) and the embedding groove (204), the angle between the rope outlet direction of the insert block (301) and the insertion groove (205) is 45°.

3. A connecting mechanism according to claim 2, characterized in that: The pull rope (3) is a steel wire rope that can be bent but is difficult to deflect.

4. A connecting mechanism according to claim 1, characterized in that: The mounting seat (1) further comprises a plurality of mounting holes (102) arranged on its outer surface, a latch hole (103) arranged on the outer surface of the mounting seat (1) for mounting the guide wheel (2), and a limit hole (104) provided at the exit of the pull rope (3).

5. A connecting mechanism according to claim 1, characterized in that: The guide wheel (2) is installed in the installation groove (101) via a pin shaft (4) so ​​that it can rotate around the pin shaft (4) in the installation groove (101).

6. A vehicle window balancer, characterized in that: comprising the connecting mechanism according to any one of claims 1 to 5; and A coil spring wheel (5), the coil spring wheel (5) being arranged on one side of the guide wheel (2); A connecting piece (6), the connecting piece (6) being connected to the other end of the pull rope (3), and the connecting piece (6) being fixedly mounted on the vehicle window.

7. The vehicle window balancer according to claim 6, characterized in that: The coil spring wheel (5) comprises a coil spring (501) wound around its outer wall, one end of the coil spring (501) being fixed to the outer wall of the coil spring wheel (5), and the other end of the coil spring (501) being fixedly mounted on the outer wall of the guide wheel (2) after being wound several times.

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