A chassis with improved structure

Abstract

The present invention discloses a chassis with improved structure, including a chassis body, an operating handle, a reclining pull rope and a gas pressure rod pull rope, the outer side of the chassis body is installed with a seat cushion forward and backward moving mechanism, and the operating handle is installed through the left outer wall of the chassis body at the lower end of the seat cushion forward and backward moving mechanism. The multifunctional chassis with improved structure of the present invention is provided with an operating handle, a reclining pull rope, a gas pressure rod pull rope, a reclining elastic adjustment mechanism, a seat back angle adjustment mechanism and a seat cushion height adjustment mechanism. The user can adjust the angle of the backrest, the lifting and lowering of the seat cushion and the forward and backward movement of the seat cushion by pulling the operating handle in different directions, which simplifies the structure of the seat and conforms to the user's operating habits, making it more convenient and reasonable for the user to use. The user can also directly sit on the seat to adjust the seat, thereby enhancing the practicality of the seat.

Description

Technical Field

[0001] The invention relates to the technical field of seats, in particular to a chassis with an improved structure. Background Art

[0002] Seats are equipment that facilitates human life. They are important equipment in people's daily life, offices and restaurants. With the improvement of modern life, people have been buying comfortable seats. In order to meet people's needs, different types of adjustable seats have appeared on the market, such as folding chairs, liftable swivel chairs, and backrest chairs with adjustable backrest inclination angles. In the existing seat design, people have handles on both sides of the seat to separately control the lifting and lowering of the seat, the swinging of the backrest and headrest, and the sliding of the seat cushion. Due to the large number of handles, people feel cumbersome to operate, and the operation is troublesome, which brings inconvenience to people. In addition, controlling the above three functions often requires three pull ropes to control. The chassis of this structure still has the disadvantages of complex mechanism, inconvenient operation, large size, and unsightly appearance. Therefore, a chassis with improved structure is urgently needed to solve the above problems. Summary of the invention

[0003] The purpose of the present invention is to provide a chassis with improved structure to solve the problems in the above background technology that too many handles cause cumbersome operation, complex internal structure, inconvenient use, large size and poor appearance.

[0004] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a chassis with improved structure, comprising a chassis body, an operating handle, a reclining pull rope and a gas pressure rod pull rope, a seat cushion forward and backward moving mechanism is installed on the outer side of the chassis body, and an operating handle is installed through the left outer wall of the chassis body at the lower end of the seat cushion forward and backward moving mechanism, a seat back is installed on the rear end of the chassis body through a seat back connecting rod, a reclining elastic adjustment mechanism is installed on the front end of the inner wall of the chassis body, and a seat back angle adjustment mechanism is installed on the inner wall of the chassis body on the right side of the reclining elastic adjustment mechanism, a seat cushion height adjustment mechanism is fixedly connected to the inside of the chassis body, a handle is installed on the left end of the operating handle, and the right end of the handle is connected by a latch. A handle connecting block is installed, a sliding seat locking control rod is fixedly connected to the middle of the top end of the handle connecting block, and the right end of the handle connecting block is fixedly connected to the handle base, one end of the handle base is provided with a reclining rope groove, and the bottom end of the handle is provided with a gas pressure rod pull rope groove, one end of the reclining pull rope is fixedly connected to the seat back angle adjustment mechanism through the groove, and the other end of the reclining pull rope is fixedly connected to the right end of the operating handle away from the seat back angle adjustment mechanism, one end of the gas pressure rod pull rope is fixedly connected to the seat cushion height adjustment mechanism through the gas pressure rod pull rope groove, and the other end of the gas pressure rod pull rope is fixedly connected to the bottom end of the operating handle away from the seat cushion height adjustment mechanism, and the right end of the handle is connected to the seat cushion height adjustment mechanism through the sliding seat locking control rod.

[0005] Preferably, the left end of the reclining pull rope is connected to the handle connecting block, and the other end of the reclining pull rope passes through the reclining positioning block, one end of the pneumatic rod pull rope is fixedly connected to the groove at the bottom of the handle, and the other end of the pneumatic rod pull rope is fixedly connected to the groove of the pneumatic rod trigger rod through the pull rope fixing block.

[0006] Preferably, the pneumatic rod pull rope is inserted into the interior of the recline locking control spring through the pull rope fixing block, and one end of the recline locking control spring is welded to the rear end outer wall of the pull rope fixing block, and the other end of the recline locking control spring is welded to the front end outer wall of the recline positioning block away from the pull rope fixing block, the rear end outer wall of the recline positioning block is welded with the recline locking spring, and one end of the recline locking spring away from the recline positioning block is welded to the front end outer wall of the recline locking tooth, the rear end of the recline locking tooth is equidistantly penetrated by a recline rotating screw and a recline positioning screw, and the bottom end of the recline rotating screw is fixedly connected to a pneumatic rod pulling rod.

[0007] Preferably, a reclining elastic force adjustment male gear is installed on the right side of the elastic force adjustment knob, and the right end of the reclining elastic force adjustment male gear is engaged on the outer wall of the reclining elastic force adjustment female gear, the rear end of the reclining elastic adjustment female gear is connected through the front base of the reclining spring, the left outer wall of the front base of the reclining spring is welded with a reclining spring, and one end of the reclining spring is welded to the right outer wall of the rear base of the reclining spring away from the front base of the reclining spring.

[0008] Preferably, a slide fixing frame is provided inside the seat cushion forward and backward moving mechanism, and slide bearings are fixedly connected to the front and rear ends of the slide fixing frame, the outer wall of the slide bracket is fixed to the slide bearing by a slide bracket fixing screw and is inserted into the inner wall of the slide fixing frame, a slide positioning tooth fixing small cover is fixedly connected to the middle of the seat cushion forward and backward moving mechanism, and a slide positioning tooth is inserted inside the slide positioning tooth fixing small cover, a slide spring is welded on the right side of the slide positioning tooth, and the other end of the slide spring is connected to the inner wall of the seat cushion forward and backward moving mechanism.

[0009] Preferably, an elastic force adjustment knob is connected to the left side of the reclining elastic force adjustment male gear, and the outer wall of the elastic force adjustment knob is provided with anti-slip grooves.

[0010] Compared with the prior art, the present invention has the following beneficial effects:

[0011] The multifunctional chassis with improved structure is provided with an operating handle, a reclining rope, a gas pressure rod rope, a reclining elastic adjustment mechanism, a seat back angle adjustment mechanism, a seat cushion height adjustment mechanism and a seat cushion forward and backward movement mechanism. The seat cushion forward and backward movement mechanism, the seat cushion height adjustment mechanism and the seat back angle adjustment mechanism are controlled by two pull ropes. The user can adjust the angle of the backrest, the lifting and lowering of the seat cushion and the forward and backward movement of the seat cushion by pulling the operating handle in different directions, which simplifies the structure of the seat and conforms to the user's operating habits, making it more convenient and reasonable for the user to use. The user can adjust the seat directly by sitting on the seat, thereby enhancing the practicality of the seat. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0013] Figure 2 It is a schematic diagram of the internal structure of the present invention;

[0014] Figure 3 It is a schematic diagram of the slide structure of the present invention;

[0015] Figure 4 It is a backward schematic diagram of the present invention;

[0016] Figure 5 It is a schematic diagram of the structure of the gas pressure rod of the present invention;

[0017] Figure 6 It is a schematic diagram of the elastic structure of the present invention.

[0018] In the figure: 1. Seat cushion forward and backward movement mechanism; 101. Sliding seat fixing frame; 102. Sliding seat bracket; 103. Sliding seat bearing; 104. Sliding seat bracket fixing screw; 105. Sliding seat positioning tooth; 106. Sliding seat positioning tooth fixing small cover; 107. Sliding seat spring; 2. Operating handle; 201. Handle; 202. Latch; 203. Handle connecting block; 204. Sliding seat locking control rod; 205. Handle base; 206. Pull rope fixing block; 207. Reclining locking control spring; 208. Reclining locking spring; 209. Reclining positioning block ; 210, reclining locking tooth; 211, reclining rotating screw; 212, reclining positioning screw; 213, gas pressure rod pull rod; 3, chassis body; 4, elastic force adjustment knob; 401, reclining elastic force adjustment male gear; 402, reclining elastic force adjustment female gear; 403, reclining spring front base; 404, reclining spring; 405, reclining spring rear base; 5, backrest connecting rod; 6, backrest; 7, reclining pull rope; 8, gas pressure rod pull rope; 9, reclining elastic force adjustment mechanism; 10, backrest angle adjustment mechanism; 11, seat cushion height adjustment mechanism. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0020] See also Figure 1-6 , an embodiment of the present invention: a chassis with improved structure, including a chassis body 3, an operating handle 2, a reclining pull rope 7 and a gas pressure rod pull rope 8, a seat cushion forward and backward moving mechanism 1 is installed on the outer side of the chassis body 3, and the operating handle 2 is installed through the left outer wall of the chassis body 3 at the lower end of the seat cushion forward and backward moving mechanism 1, a seat back 6 is installed at the rear end of the chassis body 3 through a seat back connecting rod 5, a reclining elastic adjustment mechanism 9 is installed at the front end of the inner wall of the chassis body 3, and a seat back angle adjustment mechanism 10 is installed on the inner wall of the chassis body 3 on the right side of the reclining elastic adjustment mechanism 9, a seat cushion height adjustment mechanism 11 is fixedly connected inside the chassis body 3, a handle 201 is installed at the left end of the operating handle 2, and a handle connecting block 203 is installed at the right end of the handle 201 through a latch 202, and a sliding plate is fixedly connected to the middle of the top of the handle connecting block 203 The seat locking control rod 204, and the right end of the handle connecting block 203 is fixedly connected with a handle base 205, one end of the handle base 205 is provided with a reclining rope groove, and the bottom end of the handle 201 is provided with a gas pressure rod pull rope groove, one end of the reclining pull rope 7 is fixedly connected to the seat back angle adjustment mechanism 10 through the groove, and the other end of the reclining pull rope 7 is fixedly connected to the right end of the operating handle 2 away from the seat back angle adjustment mechanism 10, one end of the gas pressure rod pull rope 8 is fixedly connected to the seat cushion height adjustment mechanism 11 through the gas pressure rod pull rope groove, and the other end of the gas pressure rod pull rope 8 is fixedly connected to the lower end of the operating handle 2 away from the seat cushion height adjustment mechanism 11, the right end of the handle 201 is connected to the seat cushion height adjustment mechanism 11 through the sliding seat locking control rod 204, and its function is to use two pull ropes to pull the device body, which increases the convenience of the device compared with the three ropes on the market;

[0021] The left end of the reclining rope 7 is connected to the handle connecting block 203, and the other end of the reclining rope 7 passes through the reclining positioning block 209. One end of the gas pressure rod rope 8 is fixedly connected to the groove at the bottom of the handle 201, and the other end of the gas pressure rod rope 8 is fixedly connected to the groove of the gas pressure rod trigger rod 213 through the rope fixing block 206, which is used to fix the rope and increase the stability of the device;

[0022] The gas pressure rod pull rope 8 is inserted into the interior of the reclining locking control spring 207 through the pull rope fixing block 206, and one end of the reclining locking control spring 207 is welded to the rear end outer wall of the pull rope fixing block 206, and the other end of the reclining locking control spring 207 is welded to the front end outer wall of the reclining positioning block 209 away from the pull rope fixing block 206, and the rear end outer wall of the reclining positioning block 209 is welded with a reclining locking spring 208, and one end of the reclining locking spring 208 away from the reclining positioning block 209 is welded to the front end outer wall of the reclining locking tooth 210, and the rear end of the reclining locking tooth 210 is equidistantly penetrated by a reclining rotating screw 211 and a reclining positioning screw 212, and the bottom end of the reclining rotating screw 211 is fixedly connected to a gas pressure rod trigger rod 213, which functions to adjust the reclining mechanism of the device, thereby enhancing the integrity of the device;

[0023] A reclining elastic adjustment male gear 401 is installed on the right side of the elastic adjustment knob 4, and the right end of the reclining elastic adjustment male gear 401 is engaged with the outer wall of the reclining elastic adjustment female gear 402, and the rear end of the reclining elastic adjustment female gear 402 is connected with a reclining spring front base 403, and a reclining spring 404 is welded to the left outer wall of the reclining spring front base 403, and one end of the reclining spring 404 is welded to the right outer wall of the reclining spring rear base 405 away from the reclining spring front base 403, which acts on the elastic force of the device and enhances the practicability of the device;

[0024] A slide fixing frame 101 is provided inside the seat cushion forward and backward movement mechanism 1, and the front and rear ends of the slide fixing frame 101 are fixedly connected with slide bearings 103, the outer wall of the slide bracket 102 is fixed in the slide bearing 103 by the slide bracket fixing screw 104 and inserted in the inner wall of the slide fixing frame 101, a slide positioning tooth fixing small cover 106 is fixedly connected to the middle of the seat cushion forward and backward movement mechanism 1, and a slide positioning tooth 105 is inserted inside the slide positioning tooth fixing small cover 106, a slide spring 107 is welded on the right side of the slide positioning tooth 105, and the other end of the slide spring 107 dares to be connected to the inner wall of the seat cushion forward and backward movement mechanism 1, its function is to slide the seat forward and backward, thereby enhancing the integrity of the device;

[0025] The left side of the reclining elastic force adjustment male gear 401 is connected to an elastic force adjustment knob 4, and the outer wall of the elastic force adjustment knob 4 is provided with anti-slip grooves, which facilitates the rotation of the elastic force adjustment knob 4, enhances the friction between the palm and the elastic force adjustment knob 4, and makes the device more practical.

[0026] Working principle: Introduction to the implementation of the backrest adjustment mechanism: One end of the backrest pull rope 7 is fixed on the handle connecting block 203, and the other end passes through the backrest positioning block 209 and is connected to the inside of the seat back angle adjustment mechanism 10. The right end of the handle 201 at the left end of the operating handle 2 and the handle base 205 are both provided with corresponding protrusions and grooves. When the handle 201 is pulled backward to the groove, the handle 201 is released. At this time, the handle connecting block 203 will be fixed in a fixed position through the positioning point. The backrest pull rope 7 pulls the backrest locking spring 208 under the action of the handle connecting block 203. At this time, the backrest positioning block 209 is in the backrest locking spring. When the reclining positioning block 209 moves forward under the pressure of the reclining spring 208, the reclining positioning block 209 disengages from the reclining locking tooth 210. At this time, the angle of the seat back 6 can drive the reclining positioning screw 212 to freely move forward and backward with the reclining rotating screw 211 as the central axis under the action of the seat back connecting rod 5. When the handle 201 is pulled forward to the middle groove, the handle 201 is released. At this time, the handle connecting block 203 will be fixed at the middle positioning point, and the reclining rope 7 will get rid of the pulling force of the handle 201. The reclining positioning block 209 is re-engaged with the reclining locking tooth 210 under the pressure of the reclining locking control spring 207, thereby fixing the tilt angle of the seat back 6;

[0027] Implementation introduction of the seat cushion lifting and adjusting mechanism: one end of the gas pressure rod pull rope 8 is fixed to the groove at the bottom end of the handle 201, and the other end is fixed to the groove of the gas pressure rod pull rod 213 through the pull rope fixing block 206. When the handle 201 is pulled upward, the handle 201 drives the gas pressure rod pull rod 213 through the gas pressure rod pull rope 8. At this time, the pressure block in the middle of the gas pressure rod pull rod 213 presses the gas rod head to achieve the purpose of lifting and lowering the seat. At this time, the handle 201 is released, and the pressure block in the middle of the gas pressure rod pull rod 213 is inseparable from the gas rod, so that the rod is fixed at a certain specified height, thereby achieving the purpose of lifting and lowering the seat;

[0028] The seat cushion forward and backward movement mechanism 1 function implementation introduction: the seat cushion is fixed to the inside of the slide seat fixing frame 101 by the slide seat bracket 102, and the slide seat bracket 102 and the slide seat fixing frame 101 are fixed on the slide seat bearing 103 by the slide seat bracket fixing screw 104. When the handle 201 is pulled forward to the front groove, the handle 201 is released, and the handle connecting block 203 is fixed in the limited position through the positioning point. At this time, the slide seat locking control rod 204 drives the slide seat positioning tooth 105 to disengage it from the tooth position of the slide seat bracket 102, thereby achieving the forward and backward movement capability. When the handle 201 is pulled backward to the middle groove, the handle 201 is released, the handle connecting block 203 is fixed on the positioning point, and the slide seat positioning tooth fixing small cover 106 gets rid of the force of the slide seat locking control rod 204. Under the elastic force of the slide seat spring 107, the slide seat positioning tooth 105 is re-engaged with the tooth position on the slide seat bracket 102, thereby achieving the locking effect;

[0029] Implementation introduction of the backrest reclining elastic force adjustment function: The force of the backrest 6 is controlled by the elasticity of the reclining spring 404, and the rear base 405 of the reclining spring and the reclining positioning screw 212 provide it with a force. When the elastic force adjustment knob 4 is twisted clockwise, the elastic force adjustment knob 4 drives the reclining elastic force adjustment male gear 401 to rotate. At this time, the reclining elastic force adjustment male gear 401 drives the reclining spring front base 403 to move backward through the engagement with the reclining elastic force adjustment female gear 402, thereby contracting the spring to increase the reclining effect, and vice versa.

[0030] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

Claims

1. A chassis with improved structure, comprising a chassis body (3), an operating handle (2), a reclining pull rope (7) and a gas pressure rod pull rope (8), the outer side of the chassis body (3) is equipped with a seat cushion forward and backward moving mechanism (1), and the operating handle (2) is installed through the left outer wall of the chassis body (3) at the lower end of the seat cushion forward and backward moving mechanism (1), and the rear end of the chassis body (3) is equipped with a seat back (6) through a seat back connecting rod (5), characterized in that: A reclining elastic adjustment mechanism (9) is installed at the front end of the inner wall of the chassis body (3), and a seat back angle adjustment mechanism (10) is installed on the inner wall of the chassis body (3) on the right side of the reclining elastic adjustment mechanism (9). A seat cushion height adjustment mechanism (11) is fixedly connected inside the chassis body (3). A handle (201) is installed at the left end of the operating handle (2), and a handle connecting block (203) is installed at the right end of the handle (201) through a latch (202). A sliding seat locking control rod (204) is fixedly connected to the middle of the top end of the handle connecting block (203), and a handle base (205) is fixedly connected to the right end of the handle connecting block (203). The handle base (205) One end of the seat (201) is provided with a reclining rope groove, and the bottom end of the handle (201) is provided with a gas pressure rod pull rope groove, one end of the reclining pull rope (7) is fixedly connected to the seat back angle adjustment mechanism (10) through the groove, and the other end of the reclining pull rope (7) is fixed to the right end of the operating handle (2) away from the seat back angle adjustment mechanism (10), one end of the gas pressure rod pull rope (8) is fixedly connected to the seat cushion height adjustment mechanism (11) through the gas pressure rod pull rope groove, and the other end of the gas pressure rod pull rope (8) is fixedly connected to the lower end of the operating handle (2) away from the seat cushion height adjustment mechanism (11), and the right end of the handle (201) is connected to the seat cushion height adjustment mechanism (11) through a sliding seat locking control rod (204); The left end of the reclining pull rope (7) is connected to the handle connecting block (203), and the other end of the reclining pull rope (7) passes through the reclining positioning block (209), one end of the gas pressure rod pull rope (8) is fixedly connected to the groove at the bottom of the handle (201), and the other end of the gas pressure rod pull rope (8) is fixedly connected to the groove of the gas pressure rod trigger rod (213) through the pull rope fixing block (206); The pneumatic rod pull rope (8) is inserted into the rearward locking control spring (207) through the pull rope fixing block (206), and one end of the rearward locking control spring (207) is welded to the rear end outer wall of the pull rope fixing block (206), and the other end of the rearward locking control spring (207) is welded to the front end outer wall of the rearward positioning block (209) away from the pull rope fixing block (206), and the rear end outer wall of the rear end positioning block (209) is welded with a rearward locking spring (208), and one end of the rearward locking spring (208) away from the rearward positioning block (209) is welded to the front end outer wall of the rearward locking tooth (210), and the rear end of the rearward locking tooth (210) is equidistantly penetrated by a rearward rotating screw (211) and a rearward positioning screw (212), and the bottom end of the rearward rotating screw (211) is fixedly connected to a pneumatic rod trigger rod (213).

2. A chassis with improved structure according to claim 1, characterized in that: The seat cushion further comprises an elastic force adjustment knob (4), a reclining elastic force adjustment male gear (401) being installed on the right side of the elastic force adjustment knob (4), and the right end of the reclining elastic force adjustment male gear (401) being engaged with the outer wall of the reclining elastic force adjustment female gear (402), the rear end of the reclining elastic force adjustment female gear (402) being connected with a reclining spring front base (403), a reclining spring (404) being welded to the left outer wall of the reclining spring front base (403), and one end of the reclining spring (404) being welded to the right outer wall of the reclining spring rear base (405) away from the reclining spring front base (403); the seat cushion forward and backward moving mechanism (1) is provided with a rearward and backward moving mechanism (405) having a rearward and backward moving mechanism (405) being provided with a rearward and backward moving mechanism (405) being provided with a rearward and backward moving mechanism (405) being provided with a rearward and backward moving mechanism (405) being provided with a rearward and backward moving mechanism (405) being provided with a rearward and backward moving mechanism (405) being provided with a rearward and backward moving mechanism (402) being provided with a rearward and backward moving mechanism (4 ... A slide seat fixing frame (101) is provided, and the front and rear ends of the slide seat fixing frame (101) are both fixedly connected with a slide seat bearing (103); the outer wall of the slide seat bracket (102) is fixed in the slide seat bearing (103) through a slide seat bracket fixing screw (104) and inserted in the inner wall of the slide seat fixing frame (101); a slide seat positioning tooth fixing small cover (106) is fixedly connected in the middle of the seat cushion forward and backward moving mechanism (1); a slide seat positioning tooth (105) is inserted in the slide seat positioning tooth fixing small cover (106); a slide seat spring (107) is welded to the rear side of the slide seat positioning tooth (105), and the other end of the slide seat spring (107) is on the inner wall of the seat cushion forward and backward moving mechanism (1).

3. A chassis with improved structure according to claim 2, characterized in that: The side view cross section of the elastic force adjustment knob (4) is in the shape of a "circular ring".

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