Pressing-type slide-to-unlock telescopic device

Abstract

A pressing-type slide-to-unlock telescopic device with a locked state and an unlocked state. The pressing-type slide-to-unlock telescopic device comprises two telescopic mechanisms, two latches, a pressing handle and a latch support, wherein the two telescopic mechanisms are arranged on the left side and the right side of the interior of the latch support, respectively; the pressing handle is arranged inside the latch support, and the pressing handle is in transmission connection with the two telescopic mechanisms by means of the latches; and by applying force to the pressing handle, the latches in a sliding groove are pushed to slide in opposite directions, such that the telescopic mechanisms on the two sides are in a contracted and pressed state to realize rapid unlocking, and releasing the pressing handle enables same to return to the locked state. This solution has a simple structure, and uses a single-sided unlocking structure, which can not only maintain the same height of a climbing appliance during an adjustment process, but can also realize simultaneous stretching and retracting, with better overall coordination, a larger structural strength, safety and reliability.

Description

Push-to-slide unlocking telescopic device Technical Field

[0001] The present invention relates to the technical field of telescopic devices, and in particular to a push-type sliding unlocking telescopic device. Background Art

[0002] A telescopic device is a device that can continuously change in length, height, or width. It enables functions such as telescoping, folding, and lifting of objects, and is widely used in fields such as construction, transportation, shipbuilding, and machinery. Due to its simple structure, flexible operation, and wide range of applications, telescopic devices are particularly widely used in climbing equipment. In most cases, climbing equipment can meet the user's climbing needs. However, in some special circumstances, when the user needs to climb to a height that exceeds the tool's maximum capacity, the climbing requirements cannot be met. Therefore, to better meet climbing needs, telescopic devices are often installed on the ladder column of the climbing equipment.

[0003] Currently, existing designs install telescopic devices on each ladder post of a climbing device. Specifically, the devices include an inner profile and an outer profile, which are connected by a sliding sleeve. The telescopic device is fixed to the outer profile, and a set of positioning slots are provided on the inner profile, each of which is equidistant along the length of the ladder post. The telescopic device unlocks or locks the positioning slots at different heights, thereby adjusting the positional relationship between the inner and outer profiles. However, while existing telescopic devices address the need for height changes during climbing operations, the following problems remain:

[0004] 1. Traditional telescopic devices need to be installed on climbing equipment. When telescoping and unlocking, it usually requires two hands to adjust each telescopic device one by one, which is time-consuming and labor-intensive.

[0005] 2. Unbalanced adjustment of the height of the climbing equipment may easily lead to the risk of falling;

[0006] 3. The telescopic device has a complex structure, involves many parts, is easily damaged and complicated to repair, and has low reliability.

[0007] Therefore, how to solve the above-mentioned deficiencies in the prior art has become the subject to be studied and solved by the present invention. Summary of the Invention

[0008] The purpose of the present invention is to provide a push-type sliding unlocking telescopic device.

[0009] To achieve the above objectives, the present invention employs a technical solution: a push-type sliding unlocking and retracting device comprising two retracting mechanisms, two locking pins, a push handle, and a locking pin bracket. The two retracting mechanisms are symmetrically positioned on opposite sides of the locking pin bracket, allowing them to extend and retract relative to the locking pin bracket. The push handle slides vertically with the locking pin bracket and is positioned relative to the inner ends of the two retracting mechanisms.

[0010] Among them, a first oblique sliding groove is provided on the inner end of the two telescopic mechanisms, two groups of horizontal sliding grooves are provided on the pressing handle corresponding to the two first oblique sliding grooves, and two groups of second oblique sliding grooves are provided on the locking pin bracket corresponding to the two horizontal sliding grooves.

[0011] The locking pin is simultaneously passed through the first oblique sliding groove, the transverse sliding groove and the second oblique sliding groove located on the same side along the front-to-back direction, and the first oblique sliding groove, the transverse sliding groove and the second oblique sliding groove correspond one to one in the front-to-back direction and cross each other.

[0012] Among them, after applying force to the pressing handle, when the locking pin slides from one end to the other end in the horizontal slide groove, the locking pin slides along the first oblique slide groove. At the same time, the locking pin applies force in the oblique direction of the telescopic mechanism in the direction of the second oblique slide groove, causing the telescopic mechanism to be squeezed and deformed.

[0013] In the above solution, in the unlocked state, force is applied to the pressing handle to drive the two locking pins to move relative to each other, causing the two telescopic mechanisms to retract toward the middle and move the outer ends of the telescopic mechanisms out of the height adjustment area of ​​the corresponding climbing device.

[0014] In the above solution, in the locked state, the pressing handle is released, and the two locking pins move away from each other, causing the two telescopic mechanisms to extend outward to both sides and recover, so that the outer ends of the telescopic mechanisms are reinserted into the height adjustment area of ​​the corresponding climbing device.

[0015] According to a further technical solution, the telescopic mechanism includes a locking member, a locking pin shaft, a spring member and a shaft welding member. The locking member serves as an abutment end and is connected to one end of the locking pin shaft. The spring member is sleeved on the locking pin shaft, and the other end of the locking pin shaft is fixed with a shaft welding member.

[0016] According to a further technical solution, the first oblique sliding groove is provided on the shaft weldment of the telescopic mechanism, and the two telescopic mechanisms are in a left-right symmetrical state, and the corresponding two first oblique sliding grooves are symmetrically arranged in an "eight" shape.

[0017] According to a further technical solution, the two groups of transverse sliding grooves are symmetrically arranged on the front and rear side walls of the pressing handle.

[0018] According to a further technical solution, the two groups of second oblique sliding grooves are symmetrically arranged on the front and rear side walls of the lock pin bracket, and the two second oblique sliding grooves are arranged in an "inverted eight" shape.

[0019] Specifically, the lock pin bracket also includes two mounting holes, two guide members and an assembly portion. The two mounting holes are opened at the left and right ends of the lock pin bracket for connecting the corresponding locking members. The inner sides of the corresponding mounting holes are fastened with guide members with a "U-shaped" structure. The assembly portion is located in the middle position of the lock pin bracket and is adapted to be installed with the pressing handle.

[0020] Specifically, one end of the spring member close to the locking member is sleeved with a retaining ring, and the other end abuts against the guide member to elastically limit the spring member.

[0021] Specifically, the push handle is connected to the middle position inside the lock pin bracket, and one end of the lock pin bracket is fixed on a positioning plate, and is fixedly connected to the climbing device to be adjusted through the positioning plate.

[0022] The working principle and advantages of the present invention are as follows:

[0023] (1) In this case, force is applied to the pressing handle to push the locking pins in the slide groove to slide in opposite directions, so that the telescopic mechanisms on both sides are in a contracted and squeezed state, and the locking parts are moved out of the height adjustment area of ​​the corresponding climbing device, thereby achieving unlocking, and then the height of the corresponding climbing device can be adjusted; moreover, the sliding of the locking pin can reduce friction, so as to disperse the force points, making unlocking smoother, achieving quick unlocking, and being more safe and reliable.

[0024] (2) This case uses a single-sided unlocking structure instead of the traditional double-sided unlocking structure. The ladder columns on both sides can be extended and retracted simultaneously and synchronously, which not only ensures that the ladder columns on both sides can maintain the same working height, but also increases safety in use and improves overall coordination.

[0025] (3) This case has a simple structure. The composite socket structure of the push handle and the lock pin bracket can increase the strength, make it safer and more reliable, effectively extend the service life, and improve the aesthetics. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 is a schematic diagram of the explosion structure of an embodiment of the present invention;

[0027] Figure 2 is a schematic diagram of the structure of a pressing handle according to an embodiment of the present invention;

[0028] Figure 3 is a schematic structural diagram of a lock pin bracket according to an embodiment of the present invention;

[0029] Figure 4 is a schematic structural diagram of the embodiment of the present invention in which the pressing handle and two telescopic mechanisms are combined;

[0030] Figure 5 is a schematic structural diagram of the embodiment of the present invention in which the pressing handle, the lock pin bracket and the two telescopic mechanisms are combined;

[0031] Figure 6 is a schematic diagram of the structure of an embodiment of the present invention in an unlocked state;

[0032] FIG7 is a schematic diagram of the structure of the embodiment of the present invention in the locked state.

[0033] In the above figures: 1. Locking member; 2. Lock pin shaft; 3. Spring member; 4. Shaft weldment; 41. First oblique slot; 5. Locking pin; 6. Press handle; 61. Horizontal slot; 7. Lock pin bracket; 71. Second oblique slot; 72. Mounting hole; 73. Guide member; 74. Assembly portion; 8. Positioning plate. DETAILED DESCRIPTION

[0034] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0035] Embodiment: The present invention will be clearly illustrated below with drawings and detailed descriptions. After understanding the embodiments of the present invention, any person skilled in the art can make changes and modifications based on the techniques taught by the present invention without departing from the spirit and scope of the present invention.

[0036] The terms used herein are for describing specific embodiments only and are not intended to be limiting of the present invention. Singular forms such as "a," "the," "this," "this," and "the" as used herein also include plural forms.

[0037] The terms “first”, “second”, etc. used in this document do not specifically refer to an order or sequence, nor are they used to limit this case. They are only used to distinguish components or operations described with the same technical terms.

[0038] As used herein, “connected” or “positioned” may refer to two or more components or devices being in direct or indirect physical contact with each other, or may refer to two or more components or devices operating or moving with each other.

[0039] The terms "including", "having", etc. used in this document are open-ended terms, meaning including but not limited to.

[0040] Unless otherwise noted, the terms used herein generally have their ordinary meanings in the art, in the context of this application, and in the specific context. Certain terms used to describe this application are discussed below or elsewhere in this specification to provide additional guidance to those skilled in the art regarding the description of this application.

[0041] The terms "front", "back", "left", "right", etc. used in this article are directional terms. In this case, they are only used to illustrate the positional relationship between the various structures, and are not used to limit the protection plan of this case and the specific direction during actual implementation.

[0042] 1-5 , a push-to-slide, unlock, and retractable device according to the present invention includes two retractable mechanisms, two lock pins 5, a push handle 6, and a lock pin bracket 7. The two retractable mechanisms are symmetrically disposed on opposite sides of the lock pin bracket 7, allowing them to extend and retract relative to the lock pin bracket 7. The push handle 6 slides vertically with the lock pin bracket 7 and is disposed corresponding to the inner ends of the two retractable mechanisms.

[0043] The inner ends of the two telescopic mechanisms are each provided with a first oblique slot 41. The pressing handle 6 is provided with two sets of transverse slots 61 corresponding to the two first oblique slots 41. The locking pin bracket 7 is provided with two sets of second oblique slots 71 corresponding to the two transverse slots 61. The locking pin 5 is simultaneously passed through the first oblique slot 41, the transverse slot 61, and the second oblique slot 71 on the same side along the front-to-back direction. The first oblique slot 41, the transverse slot 61, and the second oblique slot 71 correspond to each other in the front-to-back direction and intersect with each other.

[0044] The overall structure of the unlocking device is simple. The single-sided unlocking structure is achieved by pressing the handle 6, which is convenient for one-handed operation. It can not only maintain the adjustment balance of the corresponding climbing equipment, but also perform length extension and contraction at the same time, and balance adjustment to avoid the risk of falling.

[0045] When the push-type sliding unlocking telescopic device is in the unlocked state, the pressing handle 6 is pressed upward or downward to make the pressing handle 6 slide relative to the lock pin bracket 7 in the up and down directions; since the lock pin 5 is arranged in the horizontal slide groove 61 and the second oblique slide groove 71, the lock pin 5 moves inward along the second oblique slide groove 71 while following the pressing handle 6 to slide up and down; at the same time, the lock pin 5 is also arranged in the first oblique slide groove 41, so the lock pin 5 forces the telescopic mechanism to retract inward while making inward translation, so that the locking member 1 connected to the outer end of the telescopic mechanism is retracted and exits the lock.

[0046] Among them, the telescopic mechanism includes a locking part 1, a locking pin shaft 2, a spring part 3 and a shaft welding part 4. The locking part 1 is located in the height adjustment area of ​​the corresponding climbing device as an abutment end. The locking part 1 is connected to one end of the locking pin shaft 2. The spring part 3 is sleeved on the locking pin shaft 2, and the other end of the locking pin shaft 2 is fixed with a shaft welding part 4.

[0047] Furthermore, one end of the spring member 3 close to the locking member 1 is sleeved with a retaining ring, and the other end abuts against the guide member 73 to elastically limit it, so as to limit the spring member 3 so that it can freely expand and contract within the range of the lock pin bracket 7, which is safe and reliable.

[0048] The first oblique sliding groove 41 is provided on the shaft welding piece 4 of the telescopic mechanism, and the two telescopic mechanisms are in a bilaterally symmetrical state, and the corresponding two first oblique sliding grooves 41 are symmetrically arranged in an "eight" shape.

[0049] The two groups of transverse sliding grooves 61 are symmetrically opened on the front and rear side walls of the pressing handle 6 .

[0050] The two groups of second oblique sliding grooves 71 are symmetrically opened on the front and rear side walls of the lock pin bracket 7 , and the two second oblique sliding grooves 71 are arranged in an "inverted eight" shape.

[0051] Specifically, the two locking pins 5 are sequentially extended into the corresponding second oblique slide groove 71 and the transverse slide groove 61 arranged on the same axis, and then inserted into the corresponding first oblique slide groove 41, and continue to pass through the transverse slide groove 61 and the second oblique slide groove 71 on the other side. At this time, each slide groove has a pushing tendency in the oblique direction relative to the locking pin 5. The locking pin 5 slides back and forth in each slide groove, and the displacement resistance is small, which helps to quickly unlock.

[0052] Furthermore, the lock pin bracket 7 is made of hard plastic injection molding, which reduces overall weight and costs while ensuring strength. Its one-piece molding design also simplifies the process and improves processing efficiency. The lock pin bracket 7 also includes two mounting holes 72, two guide members 73, and an assembly portion 74. The two mounting holes 72 are located at the left and right ends of the lock pin bracket 7 and have the same shape as the locking members 1 of the two lock pin telescopic members. The inner sides of the corresponding mounting holes 72 are fastened with guide members 73 in a "U" structure to support the locking member 1 and prevent deformation of the two mounting holes 72. In addition, the assembly portion 74 is located in the middle of the lock pin bracket 7 and is adapted to be mounted with the pressing handle 6.

[0053] 6-7 , the working principle is as follows: the push-slide unlocking device can be integrally fastened to the height adjustment area of ​​corresponding climbing equipment such as a workbench, a ladder, or a stepladder;

[0054] When unlocking is required, the push handle 6 is pressed upward or downward (the operator can apply external force through the hand, elbow, foot, etc.). The two locking pins 5 move relative to each other in the two horizontal slides 61 of the push handle 5, and the two locking pins 5 move diagonally in the first oblique slide 41 of the shaft weldment 4, thereby providing a force to drive the telescopic mechanisms on the left and right sides to move toward the center simultaneously from the left and right directions. At this time, the spring member 3 on the lock pin shaft 2 is contracted and squeezed, thereby controlling the locking member 1 to move out of the height adjustment area of ​​the corresponding climbing device, so that the height of the climbing device can be adjusted according to the user's needs. Quick unlocking is achieved by applying pressure to the push handle 5 when unlocking.

[0055] When locking is required, the push handle 6 is released, and the two locking pins 5 move away from each other to provide force to the telescopic mechanisms on both sides. Relying on the tension of the spring members 3 of the two telescopic mechanisms, the left and right locking pin shafts 2 move to both sides. At the same time, the locking pins 5 move from the inside to the outside within the horizontal sliding groove 61 of the push handle 6 until the spring member 3 returns to its original state, causing the locking member 1 to re-engage the height adjustment area of ​​the corresponding climbing device. At this time, the kicking length of the height adjustment area of ​​the corresponding climbing device remains unchanged. After the two telescopic mechanisms, the push handle 6, and the locking pin bracket 7 are installed, the height adjustment area of ​​the corresponding climbing device can remain locked under the elastic pressure of the spring member 3.

[0056] The force transmission method of the present invention is not limited to the locking pin form, and other methods of using an inclined surface to enable the elastic member of the telescopic structure to achieve extrusion and rebound are all within the protection scope of the present invention.

[0057] The above embodiments are intended only to illustrate the technical concepts and features of the present invention. Their purpose is to enable those skilled in the art to understand the contents of the present invention and implement them accordingly. They are not intended to limit the scope of protection of the present invention. Any equivalent changes or modifications made in accordance with the spirit of the present invention are intended to be covered by the scope of protection of the present invention.

Claims

1. A push-type sliding unlocking and telescopic device, characterized in that: It comprises two telescopic mechanisms, two locking pins (5), a pressing handle (6) and a locking pin bracket (7); The two telescopic mechanisms are symmetrically arranged on two opposite sides of the lock pin bracket (7) so that the two telescopic mechanisms can extend outward and retract inward relative to the lock pin bracket (7); The pressing handle (6) is slidably matched with the locking pin bracket (7) in the up-down direction and is arranged corresponding to the inner ends of the two telescopic mechanisms; Wherein, the inner ends of the two telescopic mechanisms are each provided with a first oblique sliding groove (41), the pressing handle (6) is provided with two groups of transverse sliding grooves (61) corresponding to the two first oblique sliding grooves (41), and the locking pin bracket (7) is provided with two groups of second oblique sliding grooves (71) corresponding to the two transverse sliding grooves (61); The locking pin (5) is simultaneously inserted into the first oblique sliding groove (41), the transverse sliding groove (61) and the second oblique sliding groove (71) located on the same side along the front-to-back direction, and the first oblique sliding groove (41), the transverse sliding groove (61) and the second oblique sliding groove (71) correspond to each other one by one and cross each other in the front-to-back direction.

2. The push-type sliding unlocking and retracting device according to claim 1, characterized in that: The telescopic mechanism comprises a locking member (1), a locking pin shaft (2), a spring member (3) and a shaft welding member (4); the locking member (1) serves as an abutment end and is connected to one end of the locking pin shaft (2); the locking pin shaft (2) is sleeved with the spring member (3); and the other end of the locking pin shaft (2) is fixedly provided with the shaft welding member (4).

3. The push-type sliding unlocking and telescopic device according to claim 2, characterized in that: The first oblique sliding groove (41) is provided on the shaft weldment (4), and when the two telescopic mechanisms are in a left-right symmetrical state, the corresponding two first oblique sliding grooves (41) are symmetrically arranged in an "eight" shape.

4. The push-type sliding unlocking and retracting device according to claim 2, characterized in that: One end of the spring member (3) close to the locking member (1) is sleeved with a retaining ring, and the other end abuts against the guide member (73) to elastically limit the guide member (73).

5. The push-type sliding unlocking and retracting device according to claim 1, characterized in that: The two groups of transverse sliding grooves (61) are symmetrically arranged on the front and rear side walls of the pressing handle (6).

6. The push-type sliding unlocking and retracting device according to claim 1, characterized in that: The two groups of second oblique sliding grooves (71) are symmetrically arranged on the front and rear side walls of the lock pin bracket (7), and the two second oblique sliding grooves (71) are arranged correspondingly in an "inverted eight" shape.

7. The push-to-slide, unlock and retractable device according to any one of claims 1 to 6, characterized in that: The locking pin bracket (7) further comprises two mounting through holes (72), two guide members (73) and an assembly portion (74). The two mounting through holes (72) are arranged at the left and right ends of the locking pin bracket (7). The inner sides of the corresponding mounting through holes (72) are both fastened with guide members (73) in a "U-shaped" structure. The assembly portion (74) is located in the middle of the locking pin bracket (7) and is adapted to be mounted with the pressing handle (6).

8. The push-to-slide, unlock and retractable device according to any one of claims 1 to 6, characterized in that: The pressing handle (6) is sleeved in the middle position of the lock pin bracket (7); one end of the lock pin bracket (7) is connected to a positioning plate (8) and is fixedly connected to the climbing device to be adjusted via the positioning plate (8).

Images