Pull-wire control switch and seat

Abstract

The present invention discloses a pull-wire control switch and a seat. The pull-wire control switch includes a housing, a control wrench, a control pipeline, and an adjustment assembly. The control wrench is rotatably mounted on the housing, and the control wrench is provided with a first connection portion; the control pipeline includes a wire tube and a pull wire slidably arranged in the wire tube, and one end of the pull wire is connected to the first connection portion; the adjustment assembly is provided with a second connection portion and a spacing adjustment structure, the second connection portion is connected to an end of the wire tube close to the first connection portion, and the spacing adjustment structure is used to adjust the distance between the second connection portion and the first connection portion. When there is a sliding virtual position between the pull wire and the wire tube, the initial distance between the second connection portion and the first connection portion is adjusted by the spacing adjustment structure to adjust the relative initial position between the wire tube and the pull wire to compensate for the sliding virtual position between the pull wire and the wire tube, so that when the control wrench pulls the pull wire, the pull wire can immediately feedback the pulling control to the function adjustment mechanism.

Description

Technical Field

[0001] The present invention relates to the technical field of seat cable control, and in particular to a cable control switch and a seat. Background Art

[0002] Chairs are essential pieces of furniture for work or leisure, bearing the weight of the human body. Existing chairs typically feature tilt adjustment, seat or backrest lift functions, and more. These adjustments are mostly controlled by controlling the movement of pull cords. Current adjustable chairs are typically equipped with pull cord switches to manipulate the cords. However, during assembly and over time, a gap forms between the pull cords and the external wire tubes. This creates a gap when operating the pull cord switch, reducing sensitivity and potentially making it impossible to control the corresponding functional adjustment mechanism by pulling the cord. Summary of the Invention

[0003] The object of the present invention is to provide a pull-wire controlled switch and a seat to solve one or more technical problems existing in the prior art and at least provide a beneficial choice or create conditions.

[0004] The technical solutions adopted to solve the above technical problems are:

[0005] The present invention provides a pull-wire control switch, comprising:

[0006] chassis;

[0007] a control wrench rotatably mounted on the housing, the control wrench being provided with a first connecting portion eccentrically arranged with respect to a rotation center of the control wrench;

[0008] A control pipeline, comprising a wire tube and a pull wire slidably disposed in the wire tube, wherein one end of the pull wire is connected to the first connecting portion;

[0009] An adjustment component is provided in the housing, and the adjustment component is provided with a second connecting part and a spacing adjustment structure. The second connecting part is connected to an end of the wire tube close to the first connecting part, and the spacing adjustment structure is used to adjust the distance between the second connecting part and the first connecting part so that the wire tube is close to or away from the first connecting part.

[0010] The beneficial effects of the present invention are:

[0011] When in use, one end of the pull wire is connected to the first connection part, and the other end is connected to the functional adjustment mechanism for adjusting the seat lift or chair back tilt angle. The first connection part is driven to rotate by rotating the control wrench to pull the pull wire. At this time, the pull wire moves relative to the wire tube to realize the control of the functional adjustment mechanism. When there is a sliding virtual position between the pull wire and the wire tube, the initial distance between the second connection part and the first connection part is adjusted by the spacing adjustment structure to adjust the relative initial position between the wire tube and the pull wire to compensate for the sliding virtual position between the pull wire and the wire tube, so that when the control wrench pulls the pull wire, the pull wire can immediately feedback the pulling control to the functional adjustment mechanism, which can effectively avoid the failure of the pull wire control switch, extend the service life of the pull wire control switch, and realize independent adjustment.

[0012] As a further improvement of the above technical solution, the housing is provided with a control slot, the control wrench is provided in the control slot, and the control wrench has a first rotation state and a second rotation state during rotation, the control wrench in the first rotation state covers the control slot; the control wrench in the second rotation state rotates outward from the control slot to open the control slot, and a control opening is formed between the control wrench and the control slot;

[0013] The adjustment component is arranged on the inner side of the control slot, and the spacing adjustment structure is provided with an adjustment control part for controlling the second connection part to approach or move away from the first connection part, and the adjustment control part is arranged opposite to the control slot.

[0014] As a further improvement of the above technical solution, the spacing adjustment structure includes a rotating plate and an angle adjustment mechanism, one end of the rotating plate is rotatably connected to the casing, the second connecting portion is provided on the rotating plate, and the second connecting portion is eccentrically arranged with respect to the rotation center of the rotating plate, and the angle adjustment mechanism is used to adjust the rotation angle of the rotating plate.

[0015] As a further improvement of the above technical solution, the housing is provided with a connecting seat;

[0016] The angle adjustment mechanism includes an adjusting bolt and an elastic member, one end of the adjusting bolt is provided with a bolt head, the bolt head is the adjustment control part, the end of the rotating plate away from the rotation connection with the casing is provided with a connecting hole, the adjusting bolt is connected to the connecting seat after passing through the connecting hole, the connecting hole and the adjusting bolt are slidably matched, and the elastic member acts between the connecting seat and the rotating plate to keep the rotating plate in contact with the bolt head of the adjusting bolt.

[0017] As a further improvement of the above technical solution, the connecting seat is provided with a sliding groove, and the adjusting bolt is threadedly connected to a connecting nut after passing through the sliding groove. The side of the connecting seat facing away from the rotating plate is provided with a limiting groove arranged in the same direction as the sliding groove, and the connecting nut is clamped in the limiting groove, and the connecting nut is slidably arranged along the limiting groove.

[0018] As a further improvement of the above technical solution, the connecting hole is a tapered hole, and the inner diameter of the connecting hole is gradually increased from the bolt head to the other end of the adjusting bolt.

[0019] As a further improvement of the above technical solution, a rotating shaft is provided at one end of the rotating plate that is rotatably connected to the casing, a rotating countersunk hole is provided on the wall surface of the casing, and the spacing adjustment structure also includes a fixed cover, which is detachably mounted on the casing, one end of the rotating shaft is rotatably connected to the rotating countersunk hole, and the other end of the rotating shaft is rotatably connected to the fixed cover.

[0020] As a further improvement to the above technical solution, the second connecting portion is a clamping hole provided on the rotating plate, the outer periphery of the clamping hole is provided with a clamping groove, the wire tube is connected to a threaded clamp inserted into the clamping hole, the outer periphery of the threaded clamp is threadedly connected to a fine-adjustment nut, and the fine-adjustment nut abuts against the side of the rotating plate facing away from the first connecting portion;

[0021] The first connecting portion is a card slot provided on the outer peripheral surface of the control wrench, and the card slot includes a card slot extending along the axial direction of the control wrench, a wire passing slot provided in the same direction on the outer periphery of the card slot, and a positioning wire slot vertically connected to the card slot and the wire passing slot respectively. The positioning wire slot is provided in the same direction as the card hole, and the pull wire is provided with a clamping head, which is clamped in the card slot, and the pull wire is provided in the positioning wire slot.

[0022] As a further improvement of the above technical solution, a locking mechanism is provided between the control wrench and the housing, and the locking mechanism is used to lock the control wrench in the first rotation state or the second rotation state.

[0023] In addition, the present invention also proposes a seat, including the pull-wire control switch, and also including a functional adjustment mechanism for adjusting the seat lifting or backrest tilt angle, and the end of the control pipeline away from the first connection part is connected to the functional adjustment mechanism.

[0024] Other features and advantages of the present invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The present invention will be further described below with reference to the accompanying drawings and embodiments;

[0026] Figure 1 This is an exploded view of an embodiment of the pull-wire control switch provided by the present invention;

[0027] Figure 2 This is a top cross-sectional view of an embodiment of the pull-wire control switch provided by the present invention;

[0028] Figure 3 This is a schematic diagram of the inner structure of an embodiment of the pull-wire control switch provided by the present invention;

[0029] Figure 4 This is a structural diagram of a pull-wire control switch provided by the present invention, in a state without a housing;

[0030] Figure 5 This is a side view of a control wrench of a pull-wire control switch according to an embodiment of the present invention in a first rotation state;

[0031] Figure 6 This is a schematic diagram of the outer side of a control wrench of a pull-wire control switch provided by the present invention in a first rotation state;

[0032] Figure 7 This is a side view of a control wrench of a pull-wire control switch according to an embodiment of the present invention in a second rotation state;

[0033] Figure 8 This is a schematic diagram of the outer side of a control wrench in a second rotation state of a pull-wire control switch provided by the present invention;

[0034] Figure Number:

[0035] Housing 100; mounting hole 110; fixing bracket 120; first limiting groove 121; second limiting groove 122; control slot 130; control port 140; connecting seat 150; slide slot 151; limiting slot 152; rotating countersunk hole 160;

[0036] Control wrench 200; rotating shaft 210; operating end 220; connecting end 230; first connecting portion 240; snap-in slot 241; wire groove 242; positioning wire groove 243; positioning bead 250;

[0037] Control line 300; wire tube 310; threaded clamp 311; fine-tuning nut 312; pull wire 320;

[0038] Adjustment assembly 400 ; second connection portion 410 ; engaging hole 411 ; engaging groove 412 ; rotating plate 420 ; connecting hole 421 ; rotating shaft 422 ; adjusting bolt 430 ; bolt head 431 ; elastic member 440 ; connecting nut 450 ; fixing cover 460 . DETAILED DESCRIPTION

[0039] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0040] In the description of the present invention, it should be understood that descriptions involving orientation, such as the orientation or positional relationship indicated by up, down, etc., are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention 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 therefore cannot be understood as a limitation on the present invention.

[0041] In the description of the present invention, "a plurality" refers to more than two. The use of "first" or "second" is solely for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of the indicated technical features, or implicitly indicating the order of the indicated technical features.

[0042] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, and connecting should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0043] The technical solutions of the present invention will be described clearly and completely below with reference to the accompanying drawings. Obviously, the embodiments described below are only some embodiments of the present invention, not all embodiments.

[0044] Current adjustable seats are generally provided with a pull-wire switch to realize the control of the pull wire 320. In practice, when the seat is assembled and over time, a virtual position will be generated between the pull wire 320 and the external wire tube 310, resulting in a virtual position control phenomenon when operating the pull-wire control switch, reduced sensitivity, and even inability to control the corresponding function adjustment mechanism by pulling the pull wire 320. Therefore, the present invention proposes a pull-wire control switch that can effectively solve the above problem.

[0045] like Figures 1 to 4 As shown, the pull-wire control switch of the present invention includes a housing 100 , a control wrench 200 , a control pipeline 300 and an adjustment assembly 400 .

[0046] The housing 100 of this embodiment is of panel type. During installation, the housing 100 is directly covered on the bottom or back of the seat. A plurality of mounting holes 110 are evenly distributed on the edge of the housing 100. During assembly, the housing 100 is fixed with fixing screws. In some other embodiments, the housing 100 may have other structures.

[0047] The control wrench 200 of this embodiment is rotatably mounted on the housing 100. Figure 1 and Figure 3 As shown, the control wrench 200 of this embodiment is provided with a rotating shaft 210. In this embodiment, the rotating shaft 210 is set to extend in the left and right directions. In some other embodiments, the rotating shaft 210 may extend in other directions. The control wrench 200 is rotatably connected to the housing 100 through the rotating shaft 210. In this embodiment, two fixed frames 120 are arranged opposite to each other along the left and right sides on the housing 100, and the two ends of the rotating shaft 210 are rotatably connected to the two fixed frames 120 respectively.

[0048] Specifically, the two ends of the control wrench 200 along the front-back direction are an operating end 220 and a connecting end 230 , respectively. The rotating shaft 210 is provided at the connecting end 230 . When in use, the operating end 220 drives the entire control wrench 200 to rotate.

[0049] The control wrench 200 of this embodiment is provided with a first connecting portion 240 that is eccentrically arranged with respect to the rotation center of the control wrench 200. The first connecting portion 240 of this embodiment is arranged on the outer peripheral side of the control wrench 200. Specifically, the first connecting portion 240 is arranged on the outer peripheral side of the connecting end 230. In this way, when operating the operating end 220 to drive the control wrench 200 to rotate, it can be more labor-saving.

[0050] like Figure 2 As shown, the control pipeline 300 includes a wire tube 310 and a pull wire 320 slidingly arranged in the wire tube 310. One end of the pull wire 320 is connected to the first connecting part 240. When in use, the other end is connected to a functional adjustment mechanism for adjusting the seat lifting or backrest tilt angle. The wire tube 310 is used to protect and guide the pull wire 320.

[0051] like Figure 1 、 Figure 3 and Figure 4 As shown, the adjustment component 400 is provided on the housing 100, and the adjustment component 400 is provided with a second connection part 410 and a spacing adjustment structure. The first connection part 240 and the second connection part 410 of this embodiment are spaced apart in the front-to-back direction, and the second connection part 410 is connected to the end of the wire tube 310 close to the first connection part 240, so that the support points between the wire tube 310 and the pull wire 320 are separated. When the pull wire 320 is pulled, the second connection part 410 limits the wire tube 310, so that the pull wire 320 moves relative to the wire tube 310 to realize the control of the functional adjustment mechanism.

[0052] The spacing adjustment structure of this embodiment is used to adjust the distance between the second connection portion 410 and the first connection portion 240 , so that the wire tube 310 moves closer to or farther away from the first connection portion 240 .

[0053] When there is a sliding virtual position between the pull wire 320 and the wire tube 310, the initial distance between the second connecting part 410 and the first connecting part 240 is adjusted through the spacing adjustment structure to adjust the relative initial position between the wire tube 310 and the pull wire 320 to compensate for the sliding virtual position between the pull wire 320 and the wire tube 310, so that when the control wrench 200 pulls the pull wire 320, the pull wire 320 can immediately feedback the pulling control to the function adjustment mechanism, which can effectively avoid the failure of the pull wire control switch, extend the service life of the pull wire control switch, and realize independent adjustment.

[0054] The two sides of the housing 100 of this embodiment are divided into an inner side and an outer side. The control pipeline 300 and the adjustment component 400 are both arranged on the inner side of the housing 100. Figure 1 As shown, the housing 100 is provided with a control slot 130, which passes through the inner and outer sides of the housing 100. The connection end 230 of the control wrench 200 is provided on the inner side of the control slot 130. The control wrench 200 of this embodiment is bent and provided in the control slot 130. The control wrench 200 of this embodiment has a first rotation state and a second rotation state during the rotation process, as shown in FIG. Figure 5 and Figure 6 As shown, the control wrench 200 in the first rotation state covers the control slot 130, and then the shape and size of the control wrench 200 match the control slot 130; Figure 7 and Figure 8 As shown, the control wrench 200 in the second rotation state is rotated outward from the control slot 130 to open the control slot 130 , and a control opening 140 is formed between the control wrench 200 and the control slot 130 .

[0055] It can be understood that when the control wrench 200 is rotated to the first rotation state, the control wrench 200 seals the control slot 130, and the control pipeline 300 and the adjustment assembly 400 are hidden at this time. When the control wrench 200 is rotated to the second rotation state, the control wrench 200 is flipped outward to open the control slot 130.

[0056] The adjustment component 400 of this embodiment is arranged on the inner side of the control slot 130, and the spacing adjustment structure is provided with an adjustment control part for controlling the second connection part 410 to approach or move away from the first connection part 240. When adjusting the relative initial position between the wire tube 310 and the pull wire 320, the adjustment is performed through the adjustment control part, and the adjustment control part of this embodiment is arranged relative to the control port 140. When the control wrench 200 is rotated to the second rotation state, the control port 140 is formed. At this time, the adjustment control part can be operated accordingly through the control port 140. In this way, the relative initial position between the wire tube 310 and the pull wire 320 can be adjusted without affecting the overall appearance of the product, and the adjustment control part can be shielded by the control wrench 200 to avoid misoperation.

[0057] Furthermore, when adjusting the relative initial position between the wire tube 310 and the pull wire 320 , there is no need to disassemble the entire pull wire control switch, and the adjustment is convenient.

[0058] Furthermore, the spacing adjustment structure of this embodiment includes a rotating plate 420 and an angle adjustment mechanism. The rotating plate 420 extends in the left-right direction, one end of the rotating plate 420 is rotatably connected to the housing 100, the second connecting portion 410 is provided on the rotating plate 420, the rotating plate 420 rotates around a vertical axis, and the second connecting portion 410 is eccentrically arranged with respect to the rotation center of the rotating plate 420, and the angle adjustment mechanism is used to adjust the rotation angle of the rotating plate 420.

[0059] In this embodiment, the rotation angle of the rotating plate 420 is adjusted by the angle adjustment mechanism to drive the second connection portion 410 to swing in the front-back direction, thereby adjusting the initial distance between the second connection portion 410 and the first connection portion 240 .

[0060] like Figures 1 to 3 As shown, in this embodiment, a connecting seat 150 is provided at the rear end of the inner side of the housing 100, and the angle adjustment mechanism includes an adjusting bolt 430 and an elastic member 440. The adjusting bolt 430 extends in the front-to-back direction, and a bolt head 431 is provided at the front end of the adjusting bolt 430. The bolt head 431 of this embodiment is an adjustment control part, and a connecting hole 421 is provided at the end of the rotating plate 420 away from the rotation connection with the housing 100. The adjusting bolt 430 passes through the connecting hole 421 from front to back and is connected to the connecting seat 150. The connecting hole 421 and the adjusting bolt 430 are slidably matched. The elastic member 440 acts between the connecting seat 150 and the rotating plate 420 to keep the rotating plate 420 in contact with the bolt head 431 of the adjusting bolt 430. The elastic member 440 of this embodiment is a spring, and the spring is sleeved on the outer periphery of the adjusting bolt 430.

[0061] In the natural state, the elastic force of the elastic member 440 causes the rotating plate 420 to rotate forward, so that the rotating plate 420 abuts against the bolt head 431 of the adjusting bolt 430. When the rotation angle of the rotating plate 420 needs to be adjusted, the adjusting bolt 430 is driven to rotate by manipulating the bolt head 431 to adjust the distance between the bolt head 431 and the connecting seat 150, thereby driving the rotating plate 420 to rotate, thereby changing the angle of the rotating plate 420 in the natural state, and adjusting the initial distance between the second connecting portion 410 and the first connecting portion 240.

[0062] When tightening the adjusting bolt 430 , when the control wrench 200 is rotated to the second rotation state, the control wrench 200 is flipped outward, the control slot 130 is opened, and the screwdriver is inserted into the control opening 140 and docked with the bolt head 431 to tighten the adjusting bolt 430 .

[0063] Furthermore, the connecting seat 150 of this embodiment is provided with a slide groove 151, which extends in the left and right directions. The adjusting bolt 430 passes through the slide groove 151 from front to back and is threadedly connected to the connecting nut 450. The side of the connecting seat 150 facing away from the rotating plate 420 is provided with a limiting groove 152 arranged in the same direction as the slide groove 151. The connecting nut 450 is clamped in the limiting groove 152, and the connecting nut 450 is slidably arranged along the limiting groove 152. The adjusting bolt 430 of this embodiment is threadedly connected to the connecting nut 450, and the angle of the rotating plate 420 is adjusted by the bolt head 431 and the connecting nut 450. Limiting, under the elastic force of the elastic member 440, the bolt head 431 keeps in contact with the front side of the rotating plate 420, and the connecting nut 450 is in contact with the limiting groove 152. When the limiting groove 152 limits the rotation of the connecting nut 450, when the adjusting bolt 430 is turned, the bolt head 431 can be driven to move, and the connecting nut 450 of this embodiment slides along the limiting groove 152. When the rotating plate 420 rotates, the adjusting bolt 430 will be driven to tilt in the front and rear directions. At this time, the connecting nut 450 will move in the left and right directions in the limiting groove 152 without affecting the rotation of the rotating plate 420.

[0064] At the same time, in order to reduce the interference with the rotation of the rotating plate 420, as Figure 2 As shown, the connecting hole 421 is a tapered hole, and the inner diameter of the connecting hole 421 is gradually increased from the bolt head 431 to the other end of the adjusting bolt 430, so that the adjusting bolt 430 is easier to tilt and swing. When the rotation angle of the rotating plate 420 is adjusted, the adjusting bolt 430 can smoothly follow the tilt.

[0065] For ease of assembly, Figures 1 to 4As shown, the rotating plate 420 of this embodiment is rotatably connected to the casing 100 at one end thereof and is provided with a rotating shaft 422, which extends in the up and down directions. The inner wall surface of the casing 100 is provided with a rotating countersunk hole 160, and the spacing adjustment structure also includes a fixing cover 460, which is detachably mounted on the casing 100, one end of the rotating shaft 422 is rotatably connected to the rotating countersunk hole 160, and the other end of the rotating shaft 422 is rotatably connected to the fixing cover 460. The fixing cover 460 of this embodiment is fixedly mounted on the inner side of the casing 100 by screws. The rotating shaft 422 of this embodiment is integrally formed with the rotating plate 420. It can be understood that when assembling the rotating plate 420, one end of the rotating shaft 422 is inserted into the rotating countersunk hole 160, and then the fixing cover 460 is covered on the inner side of the casing 100. At this time, the fixing cover 460 covers the other end of the rotating shaft 422 and is fixed by screws.

[0066] like Figure 3 As shown, the second connection portion 410 of this embodiment is a snap-in hole 411 provided on the rotating plate 420, and a snap-in groove 412 is provided on the periphery of the snap-in hole 411 so that the snap-in hole 411 has an elastic clamping function. The snap-in hole 411 extends through the front-to-back direction. Figure 2 As shown, the wire tube 310 is connected to a threaded clamp 311 inserted into the clamping hole 411, and the clamping hole 411 has a clamping effect on the threaded clamp 311, and a fine-tuning nut 312 is threadedly connected to the outer periphery of the threaded clamp 311, and the fine-tuning nut 312 abuts against the side of the rotating plate 420 facing away from the first connecting part 240. In this embodiment, the wire tube 310 is fixed by the threaded clamp 311, and the wire tube 310 is limited by the abutment of the fine-tuning nut 312 and the rotating plate 420. When the pull wire 320 is pulled, the wire tube 310 can be limited so that the pull wire 320 can move forward relative to the wire tube 310.

[0067] During installation and debugging, the fine-tuning nut 312 can be rotated to adjust the initial position of the wire tube 310.

[0068] like Figure 4As shown, the first connecting portion 240 of this embodiment is a card slot provided on the outer peripheral surface of the control wrench 200, wherein the card slot includes a card slot 241 extending along the axial direction of the control wrench 200, a wire groove 242 provided on the outer periphery of the card slot 241 in the same direction, and a positioning wire groove 243 vertically connected to the card slot 241 and the wire groove, respectively. The positioning wire groove 243 is in the same direction as the card hole 411. It can be understood that the card slot 241 and the wire groove 242 extend in the left and right directions respectively, and the positioning wire groove 243 extends in the front-to-back direction, and a clamping head (not shown in the figure) is provided at the end of the pull wire 320. When installing the pull wire 320, the clamping head is inserted into the clamping groove 241. At this time, the pull wire 320 also moves along the wire groove 242, and then the pull wire 320 is turned into the positioning wire groove 243. At this time, the clamping head is limited in the clamping groove 241. Under the limiting action of the pull wire 320 and the positioning wire groove 243, the clamping head is positioned to realize the connection and fixation between the pull wire 320 and the control wrench 200.

[0069] In this embodiment, a locking mechanism is provided between the control wrench 200 and the housing 100. The locking mechanism is used to lock the control wrench 200 in the first rotation state or the second rotation state. Specifically, Figures 1 to 4 As shown, the locking mechanism of this embodiment includes positioning beads 250 arranged on the left and right sides of the control wrench 200, and the inner sides of the two fixing frames 120 are provided with a first limiting groove 121 and a second limiting groove 122, wherein the positioning beads 250 are engaged with the first limiting groove 121 or the second limiting groove 122 to achieve locking of the control wrench 200 in the first rotation state and the second rotation state.

[0070] In addition, the present invention also proposes a seat, including a pull-wire control switch, and also including a functional adjustment mechanism for adjusting the seat lift or seat back tilt angle. The end of the control pipeline 300 away from the first connection part 240 is connected to the functional adjustment mechanism, and the pull wire 320 is pulled by rotating the control wrench 200 to achieve control of the functional adjustment mechanism.

[0071] Throughout this specification, references to terms such as "one embodiment," "some embodiments," "illustrative embodiments," "example," "specific example," or "some examples" indicate that a particular feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, illustrative uses of these terms do not necessarily refer to the same embodiment or example. Furthermore, the described specific features, structures, materials, or characteristics may be combined in any suitable manner in any one or more embodiments or examples.

[0072] The embodiments of the present invention are described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Various changes can be made within the knowledge of ordinary technicians in the relevant technical field without departing from the scope of the present invention.

Claims

1. A pull-wire control switch, characterized in that: include: chassis; a control wrench rotatably mounted on the housing, the control wrench being provided with a first connecting portion eccentrically arranged with respect to a rotation center of the control wrench; A control pipeline, comprising a wire tube and a pull wire slidably disposed in the wire tube, wherein one end of the pull wire is connected to the first connecting portion; an adjustment assembly disposed on the housing, the adjustment assembly comprising a second connection portion and a spacing adjustment structure, the second connection portion being connected to an end of the wire tube adjacent to the first connection portion, the spacing adjustment structure being used to adjust the distance between the second connection portion and the first connection portion so as to move the wire tube closer to or further away from the first connection portion; The housing is provided with a control slot, and the control wrench is provided in the control slot. The control wrench has a first rotation state and a second rotation state during rotation. The control wrench in the first rotation state covers the control slot; the control wrench in the second rotation state rotates outward from the control slot to open the control slot, and a control opening is formed between the control wrench and the control slot. The adjustment assembly is provided on the inner side of the control slot, and the spacing adjustment structure is provided with an adjustment control portion for controlling the second connection portion to approach or move away from the first connection portion, and the adjustment control portion is provided opposite to the control slot; The spacing adjustment structure includes a rotating plate and an angle adjustment mechanism, one end of the rotating plate is rotatably connected to the housing, the second connecting portion is provided on the rotating plate, and the second connecting portion is eccentrically arranged with respect to the rotation center of the rotating plate. The angle adjustment mechanism is used to adjust the rotation angle of the rotating plate.

2. The pull-wire control switch according to claim 1, characterized in that: The housing is provided with a connecting seat; The angle adjustment mechanism includes an adjusting bolt and an elastic member, one end of the adjusting bolt is provided with a bolt head, the bolt head is the adjustment control part, the end of the rotating plate away from the rotation connection with the casing is provided with a connecting hole, the adjusting bolt is connected to the connecting seat after passing through the connecting hole, the connecting hole and the adjusting bolt are slidably matched, and the elastic member acts between the connecting seat and the rotating plate to keep the rotating plate in contact with the bolt head of the adjusting bolt.

3. The pull-wire control switch according to claim 2, characterized in that: The connecting seat is provided with a sliding groove, and the adjusting bolt is threadedly connected to a connecting nut after passing through the sliding groove. The side of the connecting seat facing away from the rotating plate is provided with a limiting groove arranged in the same direction as the sliding groove, and the connecting nut is clamped in the limiting groove, and the connecting nut is slidably arranged along the limiting groove.

4. The pull-wire control switch according to claim 3, characterized in that: The connecting hole is a tapered hole, and the inner diameter of the connecting hole is gradually increased from the bolt head to the other end of the adjusting bolt.

5. The pull-wire control switch according to claim 1, characterized in that: A rotating shaft is provided at one end of the rotating plate that is rotatably connected to the casing, and a rotating countersunk hole is provided on the wall surface of the casing. The spacing adjustment structure also includes a fixed cover, which is detachably mounted on the casing. One end of the rotating shaft is rotatably connected to the rotating countersunk hole, and the other end of the rotating shaft is rotatably connected to the fixed cover.

6. The pull-wire control switch according to claim 1, characterized in that: The second connection portion is a clamping hole provided on the rotating plate, the outer periphery of the clamping hole is provided with a clamping groove, the wire tube is connected to a threaded clamp inserted into the clamping hole, the outer periphery of the threaded clamp is threadedly connected to a fine-adjustment nut, and the fine-adjustment nut abuts against the side of the rotating plate facing away from the first connection portion; The first connecting portion is a card slot provided on the outer peripheral surface of the control wrench, and the card slot includes a card slot extending along the axial direction of the control wrench, a wire passing slot provided in the same direction on the outer periphery of the card slot, and a positioning wire slot vertically connected to the card slot and the wire passing slot respectively. The positioning wire slot is provided in the same direction as the card hole, and the pull wire is provided with a clamping head, which is clamped in the card slot, and the pull wire is provided in the positioning wire slot.

7. The pull-wire control switch according to claim 1, characterized in that: A locking mechanism is provided between the control wrench and the housing, and the locking mechanism is used to lock the control wrench in the first rotation state or the second rotation state.

8. A chair, characterized in that: It comprises a pull-wire controlled switch as described in any one of claims 1 to 7, and also comprises a functional adjustment mechanism for adjusting the seat lifting or backrest tilting angle, and the end of the control pipeline away from the first connecting part is connected to the functional adjustment mechanism.

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