Nut sleeve and connecting rod telescopic supporting device

Abstract

The nut sleeve comprises a sleeve body, the sleeve body is provided with a plurality of pivoting grooves which are longitudinally formed and distributed along the circumference of the outer side of the sleeve body in an array mode, and therefore follow-up connecting rods can be matched with the nut sleeve to move up and down relative to a screw conveniently. In order to facilitate installation, the nut sleeve is further of an up-down split structure, assembling of a rotating shaft and a connecting rod mechanism is very convenient, and compared with a traditional water cup holder fixing structure, the provided connecting rod telescopic supporting device is qualitatively improved as a whole. Firstly, the screw rod is matched with the threaded hole, the screw rod is screwed to rotate, the nut sleeve is driven to move up and down to drive the connecting rod to rotate, and therefore the telescopic supporting body is driven to move inside and outside, the structure has low requirements for tolerance and materials, in a threaded screwing structure, precision is higher, screwing control accuracy is higher, and durability is higher.

Description

Technical Field

[0001] This utility model relates to the field of vehicle mounting bracket technology, and in particular to a nut sleeve and a connecting rod telescopic support device. Background Technology

[0002] Currently, most car cup holder fixing structures still use a screw-on mechanism on the housing body. The bottom of the housing body has a spiral texture, which works in conjunction with the sliding groove at the top of the internal telescopic support block. Screwing the housing body causes the spiral texture and the sliding groove to engage, thereby causing the telescopic support block to expand outward or retract inward (e.g., CN220700977U). However, this structure also has drawbacks. For example, in the matching of the spiral texture and the sliding groove, because it is not just one telescopic support block that expands and contracts outward, but multiple telescopic support blocks that are distributed along the circumference of the housing body, it is difficult to match each telescopic support shell to expand and contract synchronously and ensure durability. This is especially true since most of these products are made of plastic, and given the current manufacturing process tolerances, many products will experience various jamming phenomena after rotating a few hundred times. Utility Model Content

[0003] In order to overcome the shortcomings of the prior art, the purpose of this utility model is to provide a nut sleeve and a connecting rod telescopic support device to solve the technical problems mentioned in the background art.

[0004] To solve the technical problem, this utility model adopts the following technical solution:

[0005] A nut sleeve includes a nut sleeve body with a plurality of pivot grooves that are longitudinally opened and arranged in a circumferential array along the outer side of the sleeve body. Each pivot groove has a pivot shaft hole symmetrically distributed on its inner side. The outer side of the sleeve body is also provided with a guide rod hole for limiting the up and down sliding of a guide rod. The middle part of the sleeve body is provided with an internal thread hole.

[0006] Specifically, the sleeve includes a base and a cover, the cover being detachably fitted over the base, a pivot groove passing through both the base and the cover, and a pivot hole including an upper half hole on the cover and a lower half hole on the base, the upper half hole and the lower half hole forming a complete pivot hole when the cover and the base are closed.

[0007] Specifically, the upper end of the base extends into a sleeve, the inner side of the sleeve cover is provided with a sleeve hole that fits into the sleeve, the internal threaded hole is located inside the sleeve, the bottom of the sleeve cover located outside the sleeve hole is provided with a positioning protrusion, and the base is provided with a positioning recess located outside the sleeve. When the sleeve cover is closed from the sleeve hole to the bottom of the sleeve, it can be positioned and fitted together by the positioning protrusion and the positioning recess.

[0008] A telescopic support device with a linkage, characterized in that it includes a nut sleeve, a support shell, a connecting rod, a telescopic support body, a screw, and a knob. The inner side of the support shell forms a receiving cavity, and a shell cover is provided at the upper end of the receiving cavity. A first through hole is provided on the shell cover. The nut sleeve is located within the receiving cavity. One end of the screw passes through the first through hole and is screwed into the internal threaded hole of the nut sleeve. The knob is located at the upper end of the screw to control the up-and-down movement of the nut sleeve relative to the screw by turning it. A telescopic groove is recessed on the outer side of the receiving cavity and the side wall of the support shell. A pivoting inner groove is provided on the inner side of the telescopic support body. One end of the connecting rod is hinged to the pivoting groove of the nut sleeve via a first rotating shaft, and the other end is hinged to the pivoting inner groove of the telescopic support body via a second rotating shaft. The telescopic support body is embedded in the telescopic groove and moves telescopically.

[0009] Specifically, the pivot inner groove is provided with an inner groove shaft hole, and the second rotating shaft passes through the inner groove shaft hole.

[0010] Specifically, the inner wall of the telescopic groove is provided with a limiting guide rail, and the outer side of the telescopic support body is provided with a limiting guide groove corresponding to the position of the limiting guide rail.

[0011] Specifically, the screw has a first limiting part at the top and a second limiting part at the bottom to limit the up and down travel of the nut on the screw. A guide rod is also provided between the cover and the bottom of the support shell, and the guide rod passes through the guide rod hole to limit the up and down sliding of the nut sleeve.

[0012] Specifically, the inner side of the knob is provided with a socket, the socket is provided with a first cross-section, the top of the screw is provided with a plug-in part, the plug-in part is provided with a second cross-section that cooperates with and limits the first cross-section, wherein the plug-in part is inserted into the socket.

[0013] Specifically, the bottom of the support shell is provided with a pivot seat, the inner side of the pivot seat is provided with a support plate and the support plate is provided with a rotating hole, wherein there is a gap between the support plate and the bottom wall of the pivot seat, the screw includes a screwing end, a threaded end and a pivoting end, wherein a first limiting part is provided between the screwing end and the threaded end, the pivoting end is located at the bottom of the threaded end and is in the shape of an insert rod, the insert rod-shaped pivoting end is inserted into the rotating hole, wherein the support plate constitutes a second limiting part.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0015] This utility model provides a nut sleeve and a connecting rod telescopic support device. The nut sleeve structure borrows from the main structure of a traditional nut, with a pivot groove added to the side to facilitate the subsequent vertical movement of the connecting rod relative to the screw. This causes the outer telescopic support to extend outward and retract inward. For ease of installation, the nut sleeve also adopts a split structure, which is very convenient for assembling the rotating shaft and connecting rod mechanism. The provided connecting rod telescopic support device is a qualitative improvement over the traditional cup holder fixing structure. First, through the cooperation of the screw and the threaded hole, the screw is turned to drive the nut sleeve to move up and down, which in turn drives the connecting rod to rotate, thereby driving the telescopic support to move in and outward. This structure has low tolerance and material requirements. Among threaded screw structures, the precision is higher, and the accuracy of its screwing control is also higher, resulting in greater durability. Attached Figure Description

[0016] Figure 1 : This is an assembly drawing of the nut sleeve structure;

[0017] Figure 2 : This is an exploded view of the nut sleeve structure;

[0018] Figure 3 This is one of the exploded views of the linkage telescopic support device.

[0019] Figure 4 This is the second exploded view of the linkage telescopic support device.

[0020] Figure 5 : This is a cross-sectional view of the linkage telescopic support device.

[0021] Figure 6 : An exploded view of the working mechanism of the screw, nut sleeve and knob in the linkage telescopic support device structure;

[0022] Figure 7 This is the second exploded diagram showing the working mechanism of the screw, nut sleeve, and knob in the linkage telescopic support device structure.

[0023] Figure 8 : A schematic diagram showing the changing installation states of the linkage telescopic support device;

[0024] In the diagram: Nut sleeve 10A, sleeve body 1, pivot groove 11, pivot shaft hole 111, guide rod hole 12, internal thread hole 13, base 1-1, sleeve cover 1-2, upper half hole 101, lower half hole 102, sleeve 103, sleeve hole 104, positioning protrusion 105, positioning concave point 106, connecting rod telescopic support device 20A, support shell 2, connecting rod 3, telescopic support body 4, screw 5, knob 6, receiving cavity 201, shell cover 21, shell bottom 22, and so on. A through hole 211, a telescopic groove 23, a pivot inner groove 41, a first rotating shaft 31, a second rotating shaft 32, an inner groove shaft hole 411, a limiting guide rail 231, a limiting guide groove 412, a first limiting part 24, a second limiting part 25, a guide rod 7, an insertion hole 61, a first cross section 611, an insertion part 51, a second cross section 511, a pivot seat 26, a support piece 261, a rotating hole 261a, a screwing end 510, a threaded end 520, and a pivoting end 530. Detailed Implementation

[0025] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0026] refer to Figures 1 to 8 :

[0027] This embodiment provides a nut sleeve, including a sleeve body 1. The sleeve body 1 adopts the traditional nut structure. As an innovation, the nut sleeve 10A has several longitudinally opened pivot grooves 11 arranged in an array along the outer circumference of the sleeve body 1. The pivot grooves 11 penetrate the sleeve body 1 longitudinally. Each pivot groove 11 has a pivot shaft hole 111 symmetrically distributed on its inner side. The outer side of the sleeve body 1 is also provided with a guide rod hole 12 for the guide rod 7 to slide up and down and limit its movement. The middle part of the sleeve body 1 is provided with an internal thread hole 13.

[0028] For ease of installation, the sleeve 1 includes a base 1-1 and a cover 1-2. The cover 1-2 is detachably fitted over the base 1-1. The pivot groove 11 passes through both the base 1-1 and the cover 1-2. The pivot hole 111 includes an upper half-hole 101 on the cover 1-2 and a lower half-hole 102 on the base 1-1. The upper half-hole 101 and the lower half-hole 102 form a complete structure when the cover 1-2 is closed to the base 1-1. The pivot hole 111, specifically, the upper end of the base 1-1 extends a sleeve 103, the inner side of the sleeve cover 1-2 is provided with a sleeve hole 104 that fits into the sleeve 103, the internal thread hole 13 is located inside the sleeve 103, the sleeve 103 can increase the number of turns or the height of the internal thread hole 13, so that the screwing area is larger and more stable when screwed with the screw 5, the bottom of the sleeve cover 1-2 is located outside the sleeve hole 104 with a fixed The base 1-1 has a positioning protrusion 105 and a positioning recess 106 on the outside of the sleeve 103. When the cover 1-2 closes down through the sleeve hole 104 from the sleeve 103, the positioning protrusion 105 and the positioning recess 106 can be positioned and fitted together. The positioning protrusion 105 and the positioning recess 106 enable the base 1-1 and the cover 1-2 to close precisely. Preferably, the number of pivot grooves 11 is an even number greater than 2, such as 4 or 6. Then the positioning recess 106 and the positioning protrusion 105 are more evenly distributed on the plane. When the number of pivot grooves 11 is an odd number, such as 3 or 5, especially 5, the plane where the positioning protrusion 105 and the positioning recess 106 are located needs to be divided into equal parts around the circumference. Then, when the upper and lower parts of the pivot grooves 11 are aligned, it is easy to make mistakes. Therefore, the positioning recess 106 and the positioning protrusion 105 can help solve the above problems.

[0029] This embodiment provides a telescopic support device, which can be used as a telescopic support for a car cup holder. The top of the device can be used to place items such as cups, aromatherapy diffusers, and coffee tables. The telescopic support device 20A includes a nut sleeve 10A, a support shell 2, a connecting rod 3, a telescopic support body 4, a screw 5, and a knob 6. The support shell 2 is cylindrical, preferably a slightly tapered shape with a wider top and narrower bottom. An inner cavity 201 is formed on the inner side of the support shell 2. The upper end of the cavity 201 is provided with a shell cover 21, and the lower end is called a shell bottom 22. The shell cover 21... The upper part has a first through hole 211. The nut sleeve 10A is located in the receiving cavity 201. One end of the screw 5 passes through the first through hole 211 and is screwed into the internal thread hole 13 of the nut sleeve 10A. The knob 6 is located at the upper end of the screw 5 to control the up and down movement of the nut sleeve 10A relative to the screw 5 by turning it. The outer side of the receiving cavity 201 and the side wall of the support shell 2 are recessed to form a telescopic groove 23. The inner side of the telescopic support body 4 is provided with a pivot inner groove 41. One end of the connecting rod 3 is hinged to the pivot groove 11 of the nut sleeve 10A through a first rotating shaft 31, and the other end... The end is hinged to the pivot groove 41 of the telescopic support body 4 via the second pivot 32. The telescopic support body 4 is embedded in the telescopic groove 23 and moves telescopically. Thus, when the knob 6 at the upper end is turned, the knob 6 drives the screw 5 to rotate. The screw 5 rotates horizontally around its axis, thereby forcing the nut sleeve 10A, which is threaded to it, to slide up and down around the screw 5. When the nut sleeve 10A moves upward, the angle between the connecting rod 3 and the screw 5 gradually decreases, and at the same time, it pulls the telescopic support body 4 inward. When the nut sleeve 10A reaches the top, the telescopic support body 4 is completely retracted, and the support shell 2 can be removed from the water cup. When the nut sleeve 10A moves downward, the angle between the connecting rod 3 and the screw 5 gradually increases, pushing the telescopic support 4 outward. When the nut sleeve 10A reaches the bottom or the telescopic support 4 hits the inner wall of the car cup holder, the knob 6 can no longer be turned, thus fixing the entire telescopic support device 20A of the connecting rod 3 inside the car cup holder. It is very convenient to operate. At the same time, because this device uses the screw 5 and the internal thread hole 13 of the nut sleeve 10A for cooperation, it is less affected by product tolerances, and its accuracy when turning is higher and its durability is stronger.

[0030] Specifically, the pivot inner groove 41 is provided with an inner groove shaft hole 411, and the second rotating shaft 32 passes through the inner groove shaft hole 411. In some cases, the first rotating shaft 31 and the second rotating shaft 32 can be integrated at both ends of the connecting rod 3.

[0031] Specifically, in order to allow the telescopic support 4 to extend and retract better inside and outside the telescopic groove 23, a limiting guide rail 231 is provided on the inner side wall of the telescopic groove 23, and a limiting guide groove 412 is provided on the outer side of the telescopic support 4 corresponding to the limiting guide rail 231. The limiting guide rail 231 is located on the inner side of the inner wall of the telescopic groove, and the limiting guide groove 412 is located on the outer side of the telescopic support 4 near the outer wall. Preferably, the opening of the limiting guide groove 412 is located on the inner side, and its outer side has a blind end, thereby limiting the telescopic support 4 from excessively retracting inward.

[0032] Specifically, the screw 5 has a first limiting part 24 at the top and a second limiting part 25 at the bottom. The first limiting part 24 is used to limit the upper end stroke of the nut sleeve 10A, and the second limiting part 25 is used to limit the lower end stroke of the nut sleeve 10A. A guide rod 7 is also provided between the shell cover 21 and the shell bottom 22 of the support shell 2. The guide rod 7 passes through the guide rod hole 12. There are two guide rods 7, which are located on the two symmetrical positions on the outer sides of the nut sleeve 10A, thereby limiting the up and down sliding of the nut sleeve 10A and preventing the nut sleeve 10A from deflecting.

[0033] Specifically, the inner side of the knob 6 is provided with a socket 61, the socket 61 is provided with a first cross-section 611, the top of the screw 5 is provided with a plug-in part 51, the plug-in part 51 is provided with a second cross-section 511 that cooperates with and limits the first cross-section 611, wherein the plug-in part 51 is inserted into the socket 61, and the plug-in cooperation of the first cross-section 611 and the second cross-section 511 ensures that the knob 6 can achieve transmission with the screw 5 when it rotates, and it is not easy to slip.

[0034] Specifically, to ensure the rotational support points at both ends of the screw 5, its upper end is limited by the first through hole 211 and the first limiting part 24 to position its upper pivot point. Here, a pivot seat 26 is provided at the bottom of the support shell 2. The inner side of the pivot seat 26 is provided with a support plate 261 and a rotating hole 261a is provided in the support plate 261. There is a gap between the support plate 261 and the bottom wall of the pivot seat 26. The screw 5 includes a screwing end 510, a threaded end 520 and a pivoting end 530. A pivoting end 530 is also provided between the screwing end 510 and the threaded end 520. The first limiting part 24, the pivot end 530 is located at the bottom of the threaded end 520, and is in the shape of a plug rod. The plug rod-shaped pivot end 530 is inserted into the rotating hole 261a. That is, the plug rod-shaped pivot end 530 is inserted into the rotating hole 261a. The rotating hole 261a allows the pivot end 530 to rotate, and at the same time can play a supporting and positioning role, so that the upper and lower ends of the screw 5 are always kept on the same axis. The support piece 261 constitutes the second limiting part 25, that is, the lower end of the nut sleeve 10A abuts against the support piece 261, so that the downward formation of the nut sleeve 10A is terminated.

[0035] The above embodiments are merely preferred embodiments of this utility model and should not be construed as limiting the scope of protection of this utility model. Any non-substantial changes and substitutions made by those skilled in the art based on this utility model shall fall within the scope of protection claimed by this utility model.

Claims

1. A nut sleeve, characterized in that, The sleeve includes a nut sleeve, which has several longitudinally opened pivot grooves arranged in a circumferential array along the outer side of the sleeve. Each pivot groove has a pivot shaft hole symmetrically distributed on its inner side. The outer side of the sleeve is also provided with a guide rod hole for limiting the up and down sliding of the guide rod. The middle part of the sleeve is provided with an internal thread hole.

2. A nut sleeve as described in claim 1, characterized in that, The sleeve includes a base and a cover. The cover is detachably fitted onto the top of the base. A pivot groove passes through both the base and the cover. The pivot hole includes an upper half hole on the cover and a lower half hole on the base. The upper half hole and the lower half hole form a complete pivot hole when the cover and the base are closed.

3. A nut sleeve as described in claim 2, characterized in that, The upper end of the base extends into a sleeve. The inner side of the sleeve cover is provided with a sleeve hole that fits into the sleeve. The internal threaded hole is located inside the sleeve. The bottom of the sleeve cover located outside the sleeve hole is provided with a positioning protrusion. The base is provided with a positioning recess located outside the sleeve. When the sleeve cover is closed from the sleeve hole to the bottom of the sleeve, it can be positioned and fitted together by the positioning protrusion and the positioning recess.

4. A linkage telescopic support device, characterized in that, The device includes a nut sleeve, a support shell, a connecting rod, a telescopic support, a screw, and a knob as described in any one of claims 1-3. The inner side of the support shell forms a receiving cavity, and the upper end of the receiving cavity is provided with a shell cover. The shell cover has a first through hole. The nut sleeve is located in the receiving cavity. One end of the screw passes through the first through hole and is screwed to the internal thread hole of the nut sleeve. The knob is located at the upper end of the screw to control the up-and-down movement of the nut sleeve relative to the screw by turning it. A telescopic groove is recessed on the outer side of the receiving cavity and the side wall of the support shell. A pivoting inner groove is provided on the inner side of the telescopic support. One end of the connecting rod is hinged to the pivoting groove of the nut sleeve through a first rotating shaft, and the other end is hinged to the pivoting inner groove of the telescopic support through a second rotating shaft. The telescopic support is embedded in the telescopic groove and moves telescopically.

5. The linkage telescopic support device as described in claim 4, characterized in that, The pivot groove is provided with an inner groove shaft hole, and the second rotating shaft passes through the inner groove shaft hole.

6. The linkage telescopic support device as described in claim 4, characterized in that, The inner wall of the telescopic groove is provided with a limiting guide rail, and the outer side of the telescopic support body is provided with a limiting guide groove corresponding to the position of the limiting guide rail.

7. A linkage telescopic support device as described in claim 4, characterized in that, The screw has a first limiting part at the top and a second limiting part at the bottom to limit the up and down travel of the nut on the screw. A guide rod is also provided between the cover and the bottom of the support shell, and the guide rod passes through the guide rod hole to limit the up and down sliding of the nut sleeve.

8. The linkage telescopic support device as described in claim 4, characterized in that, The knob has a socket on its inner side, and the socket has a first cross-section. The top of the screw has a plug-in part, and the plug-in part has a second cross-section that cooperates with and limits the first cross-section. The plug-in part is inserted into the socket.

9. A linkage telescopic support device as described in claim 4, characterized in that, The support shell has a pivot seat at its bottom. The pivot seat has a support plate on its inner side and a rotating hole inside the support plate. There is a gap between the support plate and the bottom wall of the pivot seat. The screw includes a screwing end, a threaded end and a pivoting end. A first limiting part is provided between the screwing end and the threaded end. The pivoting end is located at the bottom of the threaded end and is in the shape of an insert rod. The insert rod-shaped pivoting end is inserted into the rotating hole. The support plate constitutes a second limiting part.

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