Locomotive backrest chair and seat fixing device

Abstract

The utility model discloses a locomotive backrest chair and a seat fixing device. The locomotive backrest chair is composed of a locomotive backrest chair framework and a supporting cushion wrapping the locomotive backrest chair framework. The locomotive backrest chair framework comprises a back support, a support base and two parallel angle adjusting pieces connecting the back support and the support base, the back support comprises a lower backrest and an upper backrest, the upper backrest and the lower backrest are connected in a sliding mode, the support base comprises a base adjusting pipe and a base fixing pipe, the base adjusting pipe is connected with the angle adjusting pieces, and the base fixing pipe is connected with the angle adjusting pieces. And the base fixing pipe is fixed on a rear tail frame of the locomotive through a seat fixing device. The locomotive backrest chair can be conveniently mounted on a locomotive, and is convenient and comfortable to use by adjusting the angle of the backrest, adjusting the front-back size of the backrest and stretching the length of the backrest.

Description

Technical Field

[0001] The present invention relates to the technical fields of motorcycles and electric vehicles, and particularly to a locomotive backrest chair and a seat fixing device for electric vehicles or motorcycles. Background Art

[0002] Electric vehicles or motorcycles are common means of transportation for residents and have also become important tools for same-city logistics or food delivery in modern life. At present, the number of same-city logistics and food delivery riders has reached tens of millions. Riders work very hard, even working more than 12 hours a day. It can be said that they live on their vehicles. With such a long working time, how can we make the riders more relaxed? Here, a locomotive backrest chair and a seat fixing device are invented, which can be quickly connected to the rear seat brackets of electric vehicles and motorcycles, facilitating riders to use it as a backrest chair when riding, to lean on or lie down for rest temporarily when waiting for orders, or to lean on for rest on the ground. Summary of the Invention

[0003] In view of the above problems that current riders face in work and rest, the present invention provides a locomotive backrest chair and a seat fixing device, which can be quickly and conveniently installed and disassembled on a locomotive, and by conveniently adjusting the angle of the backrest, riders can obtain different degrees of rest.

[0004] To achieve the above objectives, a locomotive backrest chair and a seat fixing device are provided, which are composed of a locomotive backrest chair skeleton and a support pad covering it. The locomotive backrest chair skeleton includes a backrest support, a support base, and two parallel angle adjustment members connecting the two; To achieve the above objectives, a locomotive backrest chair is provided, which includes a locomotive backrest chair skeleton and a support pad covering it. The locomotive backrest chair skeleton includes a backrest support and a support base, and two parallel angle adjustment members connecting the two.

[0005] Further, the backrest support includes a lower backrest and an upper backrest. The lower backrest includes two parallel pipe fittings. One end of the pipe fittings is connected to the angle adjustment member, and the other end is slidably connected to the upper backrest, and a locking structure is provided between the two.

[0006] Further, the support base includes a base adjustment pipe and a base fixing pipe. The base adjustment pipe includes two parallel pipe fittings. One end of the pipe fittings is connected to the angle adjustment member, and the other end is slidably connected to the base fixing pipe, and a locking structure is provided between the two.

[0007] Preferably, it includes a connecting member connecting and fixing two parallel pipe fittings of the base adjustment pipe and the lower backrest. Preferably, the locking structure includes a spring pin or a lock buckle structure.

[0008] Preferably, the angle adjusting member is a device for adjusting the joint angle and locking based on a ratchet or a gear. The angle adjusting member based on a ratchet includes a first joint, a second joint, a rotating shaft, a gear pawl, a driving torsion spring, and a reset device or structure; the angle adjusting member based on a gear includes a first joint tooth, a second joint tooth, a rotating shaft, a spring, a locking handwheel or a cam locking handle.

[0009] Preferably, the supporting surface of the supporting pad is made of cloth, leather, or plastic sheets and bamboo sheets connected by ropes.

[0010] Preferably, at the upper end of the supporting surface of the supporting pad, there is a connecting band connected to the upper end of the backrest bracket, and at the back, there is a supporting band with a buckle or Velcro, and the supporting band surrounds the backrest bracket.

[0011] Preferably, the supporting surface of the supporting pad is split, including an upper backrest cushion and a lower backrest cushion. The lower backrest cushion is fixedly connected to the lower backrest, the upper end of the upper backrest cushion is connected to the upper end of the upper backrest through a connecting band, and at the back of the upper backrest cushion, there is a supporting band with a buckle or Velcro, and the supporting band surrounds the upper backrest.

[0012] Preferably, below the supporting pad, there is a seat cushion extending towards the locomotive seat.

[0013] Preferably, it includes a movable headrest. The movable headrest includes a headrest body and elastic bands connected to both ends thereof. The exterior of the headrest body is made of cloth or leather and filled with buffer materials inside.

[0014] Furthermore, when the locomotive backrest chair is used on a locomotive, a seat fixing device is required, including a C-shaped positioning groove, a positioning pin, a fixing splint, and necessary bolt components. There are holes for fixing the positioning pins on the C-shaped positioning groove.

[0015] In summary, the present invention has the following beneficial effects: 1. The present invention is easy to adjust to a comfortable angle and is very practical. 2. The present invention is convenient to use, and the installation and disassembly are fast; 3. The present invention has a simple structure, low cost, and is easy to promote. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0017] Figure 1 is a perspective view of Example 1 of the skeleton of a locomotive backrest chair according to the present invention;

[0018] Figure 2 is a cross-sectional view of an angle adjusting member of the present invention;

[0019] Figure 3 is a cross-sectional view of a spring pin in use according to the present invention;

[0020] Figure 4 is a perspective view of Example 2 of the locomotive backrest chair frame according to the present invention;

[0021] Figure 5 is a cross-sectional view of a lock locking structure according to the present invention;

[0022] Figure 6 is a perspective view of another angle adjusting member according to the present invention;

[0023] Figure 7 is a front-side perspective view of Example 1 of the locomotive backrest chair according to the present invention;

[0024] Figure 8 is a reverse-side perspective view of Example 1 of the locomotive backrest chair according to the present invention;

[0025] Figure 9 is a perspective view of Example 2 of the locomotive backrest chair according to the present invention;

[0026] Figure 10 is a perspective view of Example 3 of the locomotive backrest chair according to the present invention;

[0027] Figure 11 is a cross-sectional view of another angle adjusting member according to the present invention;

[0028] Figure 12 is a perspective view of Example 4 of the locomotive backrest chair according to the present invention;

[0029] Figure 13 is a perspective view of a locomotive backrest chair and a seat fixing device installed on the rear tail frame of the locomotive according to the present invention;

[0030] Figure 14 is a perspective view of a fixing device of a locomotive backrest chair according to the present invention.

[0031] Drawings

[0032] Locomotive backrest chair skeleton 1; Bracket base 11; Angle adjusting piece 12; Backrest bracket 13; Upper backrest 131; Lower backrest 132; Spring pin 133; V-shaped spring piece 1331; Spring pin head 1332; First joint 121; Second joint 122; Gear tooth 1221; Gear pawl 123; Driving torsion spring 124; Trigger cam piece 125; Rotating shaft 126; Rotating shaft 127; Backrest bracket 13a; Upper backrest 131a; Lower backrest 132a; Lock 133a; Upper cross tube 1311; Telescopic tube 1312; Bracket base 11a; Base adjusting tube 111a; Base fixing tube 112a; Angle adjusting piece 12a; First joint tooth 121a; Second joint tooth 122a; Pin shaft 123a; Spring 124a; Locking handwheel 125a; Support pad 2; Upper cushion 21; Support surface 211; Support belt 212; Buckle 2121; Connecting belt 213; Lower cushion 22; Support surface 221; Support belt 222; Support pad 2a; Upper cushion 21a; Lower cushion 22a; Seat cushion 22a1; Movable headrest 26; Headrest body 261; Elastic band 262; Support pad 2b; Upper cushion 21b; Support surface 211b; Support belt 212b; Connecting belt 213b; Lower cushion 22b; Bracket base 11b; Base adjusting tube 111b; Base fixing tube 112b; Positioning pin 113b; Angle adjusting piece 12b; First joint 121b; Gear pawl 123b; Upper cushion 21c; Support surface 211c; Clamping seat 213c; Lower cushion 22c; Backrest support surface 221c; Fixed side 222c; Angle adjusting piece 12c; Cam locking handle 125c; Seat fixing device 3; C-shaped positioning groove 31; Positioning pin 32; Fixed splint 33; Bolt assembly 34; Locomotive seat 92; Locomotive rear tail frame 91. Detailed implementation mode

[0033] The present invention will be further described below with reference to the accompanying drawings.

[0034] An embodiment of a locomotive backrest chair skeleton, as shown in FIG. 1, the symmetrically arranged backrest brackets 13 include an upper backrest 131 and a lower backrest 132 slidably connected thereto. The lower backrest 132 is two parallel pipes, and the lower end of the lower backrest 132 is riveted to the angle adjusting piece 12. A spring pin 133 is arranged inside the upper backrest 131, and the spring pin head 1332 (FIG. 3) of the spring pin 133 passes through a plurality of holes on the lower backrest 132 for positioning and adjusting the up and down length of the backrest bracket.

[0035] The bracket base 11 includes a base adjustment tube 111 and a base fixing tube 112 which are symmetrically and parallelly arranged and are slidably connected to each other. The base adjustment tube 111 is composed of two parallel tubes, and its front end is riveted to the angle adjustment member 12. A spring pin 133 is arranged in the base adjustment tube 111. The spring pin head 1332 (Figure 3) of the spring pin 133 passes through a plurality of holes on the base fixing tube 112 for positioning and adjusting the front-back length of the bracket base.

[0036] Figure 2 shows a cross-sectional view of the angle adjustment member in the first embodiment of the locomotive backrest chair skeleton. This is a Japanese buckle, which is essentially a ratchet angle adjustment device and is a mature product on the market. The angle adjustment member includes a first joint 121 and a second joint 122, which are rotatably connected by a rotating shaft 127. The first joint 121 is provided with a rotating shaft 126, and a gear pawl 123 and a driving torsion spring 124 are arranged on the rotating shaft 126. A gear tooth 1221 is arranged at the end of the second joint 122 and can engage with the pawl 123. A trigger cam member 125 that rotates with the rotation of the second joint 122 is arranged on the rotating shaft 127.

[0037] When the device works, in the initial state, the first joint 121 and the second joint 122 are in the minimum gear position, and at this time, the included angle between the two is the largest (about 180°); when adjusting the gear, when the first joint 121 or the second joint 122 is rotated inward to the specified gear position, the gear teeth 1221 on the multi-angle positioning ratchet 122 engage with the gear pawl 123, and at this time, the gear is locked and can bear force; when it rotates to 90°, it reaches the end. When it needs to be restored, continue to rotate the first joint 121 or the second joint 122 inward until it rotates to the maximum gear position (the included angle between the two is the smallest). At this time, the trigger cam member 125 disengages the gear pawl 123 from the gear teeth 1221 in the maximum gear position, and at this time, the first joint 121 and the second joint 122 can be restored to the initial state.

[0038] Figure 3 shows a cross-sectional view of the use of a spring pin in the first embodiment. The spring pin 133 includes a V-shaped spring piece 1331 and a spring pin head 1332 fixedly connected thereto. The spring pin 133 is installed in the tube of the upper backrest 131. The spring pin head 1332 of the spring pin 133 passes through the holes on the upper backrest 131 and the lower backrest 132 tubes. When the spring pin head 1332 is pressed outside to an appropriate position, the distance between the two can be moved until the spring pin head 1332 pops out of the hole on the next lower backrest 132 tube, and the positions of the two can be positioned.

[0039] Example 2 of the frame of a locomotive backrest chair. As shown in Fig. 4, another backrest support 13a is shown in this example, which is composed of an upper backrest 131a, a lower backrest 132a slidably connected thereto, and a buckle 133a for locking the two. The upper backrest 131a includes an upper cross tube 1311, a telescopic tube 1312 slidably connected to the upper cross tube 1311, and a buckle 133a connecting the two. In addition, there is a connecting member 135 between the two parallel tubes of the lower backrest 131a, including a connecting plate 1351, a pipe clamp 1352, and a rivet 1353.

[0040] As shown in Fig. 5, there are threads and openings at the pipe orifice of the upper part of the lower backrest 132a. The buckle 133a has threads for threaded engagement with the pipe orifice of the upper part of the lower backrest 132a. When the buckle 133a is turned, the telescopic tube 1312 and the lower backrest 132a are locked together under the pressure of the buckle 133a. Another support base 11a is shown in this example, which includes a base adjustment tube 111a, a base fixing tube 112a, and a spring pin 133 for positioning the two. The base fixing tube 112a is slidably connected to the pipe of the base adjustment tube 111a. A spring pin 133 (similar to Fig. 3) is provided inside the base adjustment tube 111a, and there are multiple holes on the base fixing tube 112a. Pressing the spring pin head 1331 on the spring pin 133 can adjust the vertical length of the support base 11a.

[0041] Fig. 6 shows a perspective view of an angle adjuster in Example 2 of the frame of a locomotive backrest chair. Another angle adjuster 12a is adopted in this example. This angle adjuster 12a is also a mature product on the market and includes a first joint tooth 121a, a second joint tooth 122a, a pin shaft 123a, a spring 124a, and a locking handwheel 125a. The first joint tooth 121a and the second joint tooth 122a are respectively connected to the base fixing tube 11a and the backrest support 13a. A screw thread is provided at the end of the shaft 123a for engagement with the screw thread on the locking handwheel 125a. When the locking handwheel 125a is tightened, the teeth on the first joint tooth 121a and the second joint tooth 122a will be meshed and pressed tightly. When the locking handwheel 125a is loosened, the meshed teeth are separated, and at this time, the angle between the two can be adjusted.

[0042] Embodiment 1 of a locomotive backrest chair, as shown in Figures 7 and 8, includes a locomotive backrest chair skeleton 1 and a support pad 2 wrapped around the skeleton. The support pad 2 includes an upper backrest pad 21 and a lower backrest pad 22. The lower backrest pad 22 includes a backrest support surface 221 (made of Oxford cloth or Teslin mesh cloth or leather) and a support belt 222 sewn (stitched together) on its back to wrap the lower backrest 132. The upper backrest pad 21 includes a support surface 211, with a connecting belt 213 and a support belt 212 sewn on its back. The connecting belt 213 is connected to the upper horizontal tube of the upper backrest 131. This connection can be achieved by sewing or using Velcro bonding. The support belt 212 is locked through a buckle 2121 on it to support the force generated by the back of the occupant. When the upper backrest 131 needs to slide down, the buckle 2121 is undone, and the upper backrest 131 slides to the bottom. At this time, the upper backrest pad 21 can be stacked on the lower backrest pad 22, and then the buckle 2121 is locked in a staggered manner.

[0043] Embodiment 2 of a locomotive backrest chair, as shown in Figure 9. In this example, the lower backrest pad 22a includes a seat cushion 22a1 extending downward to the locomotive seat, which can be used as a sunshade cushion for the locomotive seat or can be sat on during a picnic. The figure also shows a movable pillow 26, which includes a pillow main body 261 and elastic bands 262 connected to both ends. The outside of the pillow main body 26 is made of cloth or leather, and the inside is filled with cushioning material. The elastic bands 262 can fix and conveniently move the pillow 26. It can be moved to the top as a "headrest" and to the bottom as a "lumbar pillow".

[0044] Embodiment 3 of a locomotive backrest chair, as shown in Figure 10. In this example, the support pad 2b includes an upper backrest pad 21b and a lower backrest pad 22b integrated together. The support surface 211b of the support pad 2b adopts a way of bamboo slices or plastic slices connected in series by ropes. The support belt 212b is connected to the bamboo slices or plastic slices and surrounds the backrest bracket 13b. There is a buckle at the rear end of the support belt 212b as in Embodiment 1 to fix the support pad 2b on the backrest bracket 13b. When the height of the backrest bracket 13b needs to be contracted, the buckle is opened. At this time, the lower end of the lower backrest pad 22b extends to the locomotive seat cushion as a sunshade pad. The connecting belt 213b on the support pad 2b is connected to the upper horizontal tube of the backrest bracket 13b to fix the support pad 2b. Another bracket base 11b is shown in this example. It is a split type, including a base adjustment tube 111b, a base fixing tube 112b, and a positioning pin 113b. The base fixing tube 112b is slidably matched with the base adjustment tube 111b. There are multiple holes on the base adjustment tube 111b for the positioning pin 113b to pass through and position and lock.

[0045] Another angle adjuster 12b is shown in this example. As shown in Fig. 11, in the example of Fig. 2, to reset the gear pawl 123, it relies on pulling two joint angles to trigger the trigger cam 125 to adjust the angle. In this example, a part is extended from the rear of the gear pawl 123b, and the gear pawl 123b is usually fixed by a torsion spring 124. When reset is needed, just pull the rear end upward, and the gear pawl 123b will disengage from the gear teeth 1221 of the second joint 122. At this time, the angle of the second joint 122 can be adjusted.

[0046] Embodiment 4 of a locomotive backrest chair is shown in Fig. 12. The locking mechanism of the angle adjuster in this example is slightly different from that in the example of Fig. 6. As shown in the figure, the locking mechanism of the angle adjuster 12c adopts a cam locking handle 125c. An eccentric cam is provided at the front end of the cam locking handle 125c. When the cam locking handle 125c is pressed down, the eccentric cam is used to force two joint teeth to engage, so that the locomotive backrest bears the torque. When the cam locking handle 125c is opened, the two joints are opened, and at this time, the angle between the two joints can be adjusted.

[0047] As shown in Figs. 12 and 13, the upper cushion 21c is a plastic part, including a supporting surface 211c and a card seat 213c that is clamped on the cross tube of the upper backrest 131. The lower cushion 22c includes a backrest supporting surface 221c for support and a sewn fixed side edge 222c that surrounds both ends of the lower backrest 132.

[0048] Figs. 13 and 14 also show a seat fixing device 3 of a locomotive backrest chair, which is used to install the locomotive backrest chair on the rear tail frame 91 of the locomotive.

[0049] As shown in Fig. 13, in this example, a seat fixing device 3 of a locomotive backrest chair is installed on the rear tail frame 91 of the locomotive. The rear tail frame 91 of the locomotive is located at the rear end of the locomotive seat 92 and is an already installed component, generally used to fix the trunk. In the example, the seat fixing device 3 is installed at the front part of the rear tail frame 91 of the locomotive, without affecting the installation of the trunk.

[0050] The seat fixing device 3 is shown in Fig. 14 and includes a C-shaped positioning groove 31, a positioning pin 32, a fixed clamping plate 33, and a bolt assembly 34. The C-shaped positioning groove 31 is used to accommodate, position, and clamp the base fixing tube 11 of the locomotive backrest chair skeleton 1, and the positioning pin 32 passes through the positioning holes of both and locks. The fixed clamping plate 33 and the bolt assembly 34 are used to fix the C-shaped positioning groove 31 to the locomotive.

[0051] Obviously, the embodiments described above are only a part of the embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other implementation manners obtained by those of ordinary skill in the art without creative efforts, for example, the "pipe" in the example can be pipes of various shapes including square pipes, and even pipes with openings. Additionally, for example, the fixing device of the locomotive backrest chair can also be fixed to the rear tail frame 91 of the locomotive by (Velcro straps), or even other clamping devices can be used to fix the locomotive backrest chair, but this is not the core point of the present invention and is easy to be thought of. The technical features of the above-described embodiments can be combined arbitrarily. For the sake of concise description, the non-critical connection methods are not described in detail, and not all possible combinations of the technical features in the above embodiments are described. However, as long as the combinations of these technical features do not conflict, they should be considered to be within the scope described in this specification.

[0052] In addition, any reference signs in the claims should not be construed as limiting the claims. The verb "comprise" and its variations do not exclude other elements or steps other than those stated in the claims. The indefinite article "a" before an element or step does not exclude the presence of a plurality of such elements or steps. It should be noted that the embodiments described above are only for description and not for limiting the present invention. Based on the embodiments of the present invention, all other implementation manners obtained by those of ordinary skill in the art without creative efforts belong to the scope protected by the present invention. It can be understood that the present invention can be modified and deformed as long as it does not deviate from the spirit and scope of the present invention. The above-mentioned modifications and deformations are considered to be within the scope of the present invention and the appended claims. The protection scope of the present invention is defined by the appended claims. In addition, the various technologies described herein can be used in but not limited to the locomotive field. For example, a part of the seat cushion extends from the lower end of the current cushion 22b, and at this time, the locomotive backrest chair can be placed on the grass as a picnic chair for sitting on the ground.

Claims

1. A locomotive backrest chair, comprising a locomotive backrest chair skeleton and a support pad covering thereon, wherein the locomotive backrest chair skeleton includes a backrest support and a support base, and two angle adjusters arranged in parallel for connecting the two; characterized in that: The backrest support includes a lower backrest and an upper backrest. The lower backrest includes two parallel tubes. One end of each tube is connected to an angle adjuster, and the other end is slidably connected to the upper backrest, and a locking structure is provided therebetween. The support base includes a base adjustment tube and a base fixing tube. The base adjustment tube includes two parallel tubes. One end of each tube is connected to the angle adjuster, and the other end is slidably connected to the base fixing tube, and a locking structure is provided therebetween.

2. The locomotive backrest chair according to claim 1, characterized in that: It includes a connector connecting and fixing the two parallel tubes of the base adjustment tube and the lower backrest.

3. The locomotive backrest chair according to claim 1, characterized in that: The locking structure includes a spring pin or a lock buckle structure.

4. The locomotive backrest chair according to claim 1, characterized in that: The angle adjuster is a device for adjusting the angle and locking of a joint based on a ratchet or a gear. The angle adjuster based on a ratchet includes a first joint, a second joint, a rotating shaft, a gear pawl, a driving torsion spring and a reset structure. The angle adjuster based on a gear includes a first joint tooth, a second joint tooth, a rotating shaft, a spring, a locking handwheel or a cam locking handle.

5. A locomotive backrest chair according to claim 1, characterized in that: The supporting surface of the support pad is made of cloth, leather, or plastic sheets or bamboo slices connected by ropes.

6. The locomotive backrest chair according to claim 5, characterized in that: The upper end of the supporting surface of the support pad has a connecting band connected to the upper end of the backrest support, and a supporting band with a buckle or Velcro is connected at the back, and the supporting band surrounds the backrest support.

7. The locomotive backrest chair according to claim 5, characterized in that: The supporting surface of the support pad is split, including an upper cushion and a lower cushion. The lower cushion is fixedly connected to the lower backrest. The upper end of the upper cushion is connected to the upper end of the upper backrest by a connecting band. A supporting band with a buckle or Velcro is connected at the back of the upper cushion, and the supporting band surrounds the upper backrest.

8. The locomotive backrest chair according to claim 1, wherein: Below the support pad includes a seat cushion extending towards the locomotive seat.

9. The locomotive backrest chair according to claim 1, characterized in that: It includes a movable headrest. The movable headrest includes a headrest main body and elastic bands connected to both ends thereof. The outer part of the headrest main body is made of cloth or leather and filled with buffer materials inside.

10. A seat fixing device for a locomotive backrest chair according to any one of claims 1-9, comprising a C-shaped positioning groove, a positioning pin, a fixing splint and a bolt assembly, characterized in that There are holes for fixing the positioning pins on the C-shaped positioning groove.

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