Base-free handle
By setting a limiting hole and an axial through hole for the fixing seat on the end face of the handle, and combining the movement of the slider and the locking pin, the problem of preventing accidental operation of the baseless handle is solved, and the effect of preventing accidental touch is achieved with a simple structure.
Patent Information
- Application Number
- CN202422978587.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-04
- Publication Date
- 2025-11-18
- Estimated Expiration
- 2034-12-04
AI Technical Summary
Existing baseless handles lack anti-misoperation features, which may cause children to accidentally open or close doors and windows. Furthermore, the existing anti-misoperation structure is complex, resulting in a complex handle assembly structure.
A baseless handle was designed. By setting a limiting hole on the end face of the handle and setting an axial through hole and a slider part to drive the locking pin to move axially on the fixed base, the handle can achieve the function of preventing accidental contact while keeping the structure simple.
It achieves anti-accidental touch function without increasing the complexity of the handle, avoiding accidental operation by children, while simplifying the assembly process of the switch components.
Smart Images
Figure CN223562615U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the field of door lock, more particularly to a handle without base. BACKGROUND
[0002] The handle is a hardware product commonly used in daily life, and is often used for opening and locking doors, windows and the like. The existing handle without base is usually composed of a handle knob and a handle seat, wherein the handle knob is connected with a lock core through a square rod.
[0003] The existing handle without base often does not provide the function of preventing misoperation, and causes children to open or close doors and windows by mistake, thereby causing danger. Some handles without base are also equipped with a misoperation prevention structure, but the misoperation prevention structure is often arranged on the handle knob, resulting in a complicated assembly structure of the handle knob. SUMMARY
[0004] The utility model solves the technical problem that the misoperation prevention structure in the above-mentioned handle without base is relatively complicated, and provides a new handle without base.
[0005] The technical scheme for solving the above-mentioned technical problem is to provide a handle without base, which comprises a handle knob, a handle seat assembly, a square rod assembly and a switch assembly. The handle seat assembly comprises a fixing seat for being mounted to the surface of a door leaf or a window leaf. The handle knob and the fixing seat are connected axially through the square rod assembly, and the handle knob is fixedly connected with the square rod assembly. The fixing seat is rotatably connected with the square rod assembly.
[0006] The switch assembly comprises a sliding block part, a connecting part and a lock pin, and the sliding block part and the lock pin are connected through the connecting part. The fixing seat comprises an axial through hole and an axial connecting groove. The axial connecting groove extends axially from the end face of the fixing seat away from the handle knob to the direction of the handle knob, and a part of the axial through hole is connected in communication with the outer peripheral surface of the fixing seat through the axial connecting groove. The switch assembly is mounted to the fixing seat, and the lock pin is inserted into the axial through hole. The sliding block part is attached to the outer peripheral surface of the fixing seat. The connecting part is embedded in the axial connecting groove and drives the lock pin to slide in the axial through hole under the drive of the sliding block part. The end face of the handle knob facing the fixing seat has a plurality of limiting holes matched with the lock pin, and the switch assembly prevents the handle knob from rotating relative to the fixing seat by inserting the lock pin into any one of the limiting holes.
[0007] As a further improvement of the utility model, the outer circumferential surface of the fixed seat has an axial sliding groove, the axial connecting groove is penetrated by the bottom of the axial sliding groove to the axial through hole, and the axial size of the axial sliding groove is greater than the axial size of the sliding block part, the width of the axial sliding groove is matched with the width of the sliding block part; when the switch assembly is installed to the fixed seat, the sliding block part is embedded into the axial sliding groove and slides along the axial direction of the fixed seat under the limitation of the axial sliding groove.
[0008] As a further improvement of the utility model, the axial sliding groove penetrates the outer circumferential surface of the fixed seat axially, and two groups of first limiting parts distributed along the axial direction of the fixed seat are arranged on the two axial groove walls of the axial sliding groove.
[0009] The two axial side walls of the sliding block part have second limiting parts corresponding to the first limiting parts, and when the second limiting part is limited by one group of first limiting parts, one end of the lock pin is inserted into one of the limiting holes of the handle knob; when the second limiting part is limited by the other group of first limiting parts, the lock pin is completely located in the fixed seat.
[0010] As a further improvement of the utility model, each group of first limiting parts is composed of first clamping grooves respectively located on the two axial groove walls of the axial sliding groove, and the second limiting part is composed of first clamping blocks respectively located on the two axial side walls of the sliding block part; or,
[0011] Each group of first limiting parts is composed of second clamping blocks respectively located on the two axial groove walls of the axial sliding groove, and the second limiting part is composed of second clamping grooves respectively located on the two axial side walls of the sliding block part.
[0012] As a further improvement of the utility model, the connecting part is plate-shaped and is connected vertically to the bottom of the inner side surface of the sliding block part, the connecting part has an assembly hole, and the lock pin is fixed to the connecting part by being inserted into the assembly hole.
[0013] As a further improvement of the utility model, the outer side surface of the sliding block part has convex strips arranged along the circumferential direction of the fixed seat.
[0014] As a further improvement of the utility model, the length of the lock pin is matched with the axial size of the fixed seat; the axial size of the sliding block part along the fixed seat is less than or equal to two-thirds of the axial size of the fixed seat.
[0015] As a further improvement of the utility model, the end face of the fixed seat towards the handle knob has a plurality of blind holes, and a spring and a steel ball are arranged in each blind hole; the handle seat assembly further comprises a pressing piece, and the pressing piece has a plurality of first through holes; the pressing piece is fixed to the end face of the fixed seat towards the handle knob, and at least a part of the steel ball in the blind hole protrudes from the surface of the pressing piece away from the fixed seat under the pushing of the spring;
[0016] The square rod assembly comprises a limiting piece having a plurality of second through holes corresponding to the first through holes, and the limiting piece is located between the pressing piece and the end face of the handle knob and is rotationally limited by the spherical cap portion of the steel ball on the fixed seat being embedded in the second through hole.
[0017] As a further improvement of the utility model, the fixed seat comprises an axial first central through hole, the pressing piece has a second central through hole, and the limiting piece has a third central through hole; the square rod assembly comprises a nut and a rotating shaft, the rotating shaft passes through the first central through hole, the second central through hole and the third central through hole in sequence, and the limiting piece and the pressing piece are locked with the fixed seat by the nut; the first end of the rotating shaft has a radial threaded hole, and the first end of the rotating shaft and the nut are inserted into the handle knob and locked and fixed by a locking screw threadedly connected to the radial threaded hole.
[0018] As a further improvement of the utility model, the square rod assembly comprises a square steel and a clamping ring, the square steel is coaxially connected to the tail end of the rotating shaft, the clamping ring is sleeved on the square steel, and the outer periphery of the clamping ring abuts against the inner wall of the first central through hole of the fixed seat.
[0019] The utility model has the following beneficial effects: by arranging an axial through hole on the fixed seat and a limiting hole on the end face of the handle knob, and by driving the locking pin arranged in the axial through hole to move axially through the sliding block portion attached to the outer periphery of the fixed seat, the handle is provided with the function of preventing accidental touch while the handle structure is relatively simple. BRIEF DESCRIPTION OF DRAWINGS
[0020] Figure 1 It is the overall structure schematic diagram of the handle without base provided by the utility model embodiment.
[0021] Figure 2 It is the exploded structure schematic diagram of the handle without base provided by the utility model embodiment.
[0022] Figure 3 It is the cross-sectional structure schematic diagram of the handle without base at the switch assembly provided by the utility model embodiment.
[0023] Figure 4 It is the exploded structure schematic diagram of the switch assembly in the handle without base provided by the utility model embodiment.
[0024] Figure 5 Figure 2 is a partial cross-sectional structure schematic diagram of the handle without base in an open state of the switch assembly provided by the embodiment of the present application.
[0025] Figure 6 Figure 3 is a partial cross-sectional structure schematic diagram of the handle without base in a locked state of the switch assembly provided by the embodiment of the present application.
[0026] Reference Signs
[0027] 10 handle knob 11 threaded hole
[0028] 12 locking screw 13 limiting hole
[0029] 20 handle seat assembly 21 fixed seat
[0030] 211 axial through hole 212 axial sliding slot
[0031] 213 axial connecting slot 214 first central through hole
[0032] 215 first clamping slot 22 spring
[0033] 23 steel ball 24 pressing piece
[0034] 241 second central through hole 30 square rod assembly
[0035] 31 limiting piece 311 third central through hole
[0036] 32 rotating shaft 321 radial threaded hole
[0037] 33 nut 34 square steel
[0038] 35 clamping ring 40 switch assembly
[0039] 41 sliding block part 411 convex strip
[0040] 412 first clamping block 42 connecting part
[0041] 421 assembling hole 43 locking pin
[0042] 431 connecting column DETAILED DESCRIPTION
[0043] In order to make the purpose, technical scheme and advantages of the present application more clear, the present application will be further described in detail below in combination with the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application, and are not used to limit the present application.
[0044] AsFigures 1-4 The handle provided by the embodiment of the utility model is assembled to the door leaf or the window leaf (for example, a section bar) and drives the lock cylinder in the door leaf or the window leaf to operate, so as to realize the locking and opening of the door leaf or the window leaf. The handle without base of the embodiment comprises a handle knob 10, a handle seat assembly 20, a square rod assembly 30 and a switch assembly 40, and the handle without base is assembled to the door leaf or the window leaf through the handle seat assembly 20. The handle seat assembly 20 comprises a fixed seat 21, the fixed seat 21 can be fixed to the surface of the door leaf or the window leaf through a screw, the handle knob 10 is axially connected with the fixed seat 21 through the square rod assembly 30, and the handle knob 10 is fixedly connected with the square rod assembly 30, the fixed seat 21 is rotationally connected with the square rod assembly 30, that is, the square rod assembly 30 and the handle knob 10 can rotate relative to the fixed seat 21. Specifically, the handle knob 10 can be L-shaped, or the handle knob 10 can also be a columnar shape with a ball head, etc.; the fixed seat 21 is columnar with a relatively small axial length (for example, 1-3 CM); and the handle knob 10, the square rod assembly 30 and the fixed seat 21 can be connected in the existing manner in the art, and details are not described herein.
[0045] The switch assembly 40 comprises a sliding block part 41, a connecting part 42 and a lock pin 43, the sliding block part 41, the connecting part 42 and the lock pin 43 can be processed from metal, hard plastic or other materials, wherein the sliding block part 41 and the lock pin 43 are connected through the connecting part 42, for example, the sliding block part 41 and the connecting part 42 are integrated, and the lock pin 43 is assembled to the connecting part 42. In actual application, the sliding block part 41, the connecting part 42 and the lock pin 43 can also be integrally formed.
[0046] The fixed seat 21 comprises an axial through hole 211 and an axial connecting groove 213, wherein the axial through hole 211 penetrates two axial end faces of the fixed seat 21 along the axial direction of the fixed seat 21, the axial connecting groove 213 extends axially from the end face of the fixed seat 21 away from the handle knob 10 to the direction of the handle knob 10 (for example, the axial dimension of the axial connecting groove 213 along the axial direction of the fixed seat 21 is not less than one third of the axial length of the fixed seat 21), and a part of the axial through hole 211 is connected with the outer circumferential surface of the fixed seat 21 through the axial connecting groove 213.
[0047] The switch assembly 40 is assembled to the fixed seat 21, and the lock pin 43 is inserted into the axial through hole 211, the sliding block part 41 is attached to the outer circumferential surface of the fixed seat 21, and the connecting part 42 is embedded in the axial connecting groove 213. Since the axial connecting groove 213 extends axially from the end face of the fixed seat 21 away from the handle knob 10 to the direction of the handle knob 10, the switch assembly 40 can be assembled to the fixed seat 21 from the end of the fixed seat 21 away from the handle knob 10. When the sliding block part 41 is pushed along the axial direction of the fixed seat 21, the sliding block part drives the connecting part 42 to slide in the axial connecting groove 213, and drives the lock pin 43 to slide in the axial through hole 211.
[0048] The end face of the handle 10 towards the fixed base 21 has a plurality of limiting holes 13 matched with the lock pin 43. The limiting holes 13 can be blind holes. When the lock pin 43 is inserted into any limiting hole 13, the switch assembly 40 prevents the handle 10 from rotating relative to the fixed base 21. That is, when the lock pin 43 is inserted into any limiting hole 13, the handle 10 cannot rotate relative to the fixed base 21. Since the fixed base 21 is fixed on the door leaf or the window leaf, the handle 10 cannot rotate relative to the door leaf or the window leaf, thereby realizing the locking of the handle without the base. As can be understood by those skilled in the art, in order to enable the lock pin 43 to be inserted into the limiting hole 13, the plurality of limiting holes 13 are located on the same circumference, and the lock pin 43 is always opposite to the above-mentioned circumference when the handle 10 rotates relative to the fixed base 21. When the handle 10 rotates to the position that one of the limiting holes 13 is coaxial with the lock pin 43, the slide block part 41 can be pushed to make the lock pin 43 inserted into the limiting hole 13, thereby making the handle 10 locked, as shown in FIG. 4; and when the handle 10 is unlocked, the slide block part 41 is only needed to be pushed to make the lock pin 43 exit from the limiting hole 13, as shown in FIG. 5, at this time, the handle 10 can rotate relative to the fixed base 21. Figure 6 Figure 5
[0049] In an embodiment of the present utility model, the handle 10 has two limiting holes 13 spaced 180°. When the handle 10 drives the square rod assembly 30 to rotate to the position that one of the limiting holes 13 is coaxial with the lock pin 43, the square rod assembly 30 drives the lock tongue (or the lock hook) to be locked with the window frame or the door frame, at this time, the lock pin 43 inserted into the limiting hole 13 can make the door leaf or the window leaf keep locked, and the door leaf or the window leaf cannot be opened by rotating the handle 10; when the handle 10 drives the square rod assembly 30 to rotate to the position that the other limiting hole 13 is coaxial with the lock pin 43, the square rod assembly 30 drives the lock tongue or makes the door leaf or the window leaf keep opened, at this time, the lock pin 43 inserted into the limiting hole 13 can make the door leaf or the window leaf keep opened, and the door leaf or the window leaf cannot be locked by rotating the handle 10. In actual application, the number of the limiting holes 13 on the handle 10 can be set according to the requirement.
[0050] The handle without the base, by setting the axial through hole 211 on the fixed base 21 and the limiting hole 13 on the end face of the handle 10, and by the slide block part 41 pasted on the outer circumference of the fixed base 21 driving the lock pin 43 axially moving in the axial through hole 211, relative to the structure that the switch assembly 40 is installed on the handle 10, the above-mentioned structure makes the handle have the function of preventing the mistaken touch, and makes the overall structure of the handle relatively simple. Moreover, the above-mentioned structure not only does not need to change the outer surface of the handle 10, but also is beneficial to the assembly of the switch assembly 40.
[0051] In an embodiment of the present utility model, the outer circumferential surface of the fixed seat 21 has an axial sliding groove 212, and an axial connecting groove 213 is located at the bottom of the axial sliding groove 212, and the axial dimension of the axial sliding groove 212 is greater than the axial dimension of the sliding block part 41, and the width of the axial sliding groove 212 is adapted to the width of the sliding block part 41. When the switch assembly 40 is installed to the fixed seat 21, the sliding block part 41 is embedded into the axial sliding groove 212 and slides along the axial direction of the fixed seat 21 under the limitation of the axial sliding groove 212. Through the above structure, on the one hand, the sliding direction of the sliding block part 41 can be limited, which is convenient for the operator to apply force to the sliding block part 41, and on the other hand, the dimension of the sliding block part 41 protruding from the outer circumferential surface of the fixed seat 21 is relatively small. In particular, the cross section of the sliding block part 41 can be the same as the shape of the cross section of the axial sliding groove 212 (for example, both are circular arc shapes), so that the sliding block part 41 is convenient for pushing operation, and the consistency of the whole handle without base is high.
[0052] In an embodiment of the present utility model, the axial sliding groove 212 axially penetrates the outer circumferential surface of the fixed seat 21, and the two axial groove walls of the axial sliding groove 212 have two groups of first limiting parts distributed along the axial direction of the fixed seat. Correspondingly, the two axial side walls of the sliding block part 41 have second limiting parts corresponding to the first limiting parts, and when the second limiting parts pass through the first limiting parts during the sliding process of the sliding block part 41 in the axial sliding groove 212, the second limiting parts are limited by the first limiting parts. When the second limiting parts are limited by one group of first limiting parts (at this time, a relatively large pushing force is needed to push the sliding block part 41 to slide), one end of the lock pin 43 is inserted into one of the limiting holes 13 of the handle knob 10 (at this time, a relatively large pushing force is also needed to push the sliding block part 41 to slide), at this time, the handle knob 10 cannot be rotated; when the second limiting parts are limited by the other group of first limiting parts, the lock pin 43 is completely located in the fixed seat 21 (that is, not inserted into any limiting hole 13), at this time, the handle knob 10 can be freely rotated. Through the above structure, the switch assembly 40 can keep the handle knob 10 locked or opened, avoiding the locking or opening failure caused by twisting the handle knob 10. Those skilled in the art can understand that the first limiting parts and the second limiting parts only increase the resistance of the sliding block part 41 sliding in the axial sliding groove 212, rather than completely preventing the sliding of the sliding block part 41.
[0053] Specifically, in combination with Figures 4-6As shown, each set of the first limiting part is formed by the first clamping groove 215 located on the two axial slot walls of the axial sliding slot 212, that is, each axial slot wall of the axial sliding slot 212 has two first clamping grooves 215; correspondingly, the second limiting part is formed by the first clamping block 412 located on the two axial side walls of the sliding block part 41, and the first clamping groove 215 and the first clamping block 412 not only have simple structure, but also can make the sliding block part 41 and the fixed seat 21 keep stable locking. In actual application, each set of the first limiting part can also be formed by the second clamping block located on the two axial slot walls of the axial sliding slot 212, and the second limiting part is formed by the second clamping groove located on the two axial side walls of the sliding block part 41. It can be understood by those skilled in the art that the depth of the first clamping groove 215 or the second clamping groove is relatively small, so as to avoid the first clamping block 412 or the second clamping block from being stuck.
[0054] As Figure 4 shown, in an embodiment of the present application, the connecting part 42 of the switch assembly 40 is plate-shaped and vertically connected to the bottom of the inner side surface of the sliding block part 41, and the connecting part 42 has an assembly hole 421, and the bottom of the locking pin 43 has a connecting column 431, and the locking pin 43 is fixed with the connecting part 42 by inserting the connecting column 431 into the assembly hole 421. This structure is convenient for processing and assembling the switch assembly 40, and is also beneficial to replacing the worn locking pin 43.
[0055] In order to facilitate the pushing operation of the sliding block part 41, in an embodiment of the present application, the outer side surface of the sliding block part 41 has a convex strip 411 arranged along the circumference of the fixed seat 21. The convex strip 411 is obviously protruded from the outer circumferential surface of the fixed seat 21, and is convenient for finger force.
[0056] In an embodiment of the present application, the length of the locking pin 43 of the switch assembly 40 is adapted to the axial dimension of the fixed seat 21 (for example, equal to or slightly smaller than the axial dimension of the fixed seat 21), so that the length inserted into the limiting hole 13 of the handle lever 10 is relatively large, and the fixing of the handle lever 10 is more stable. Correspondingly, the axial dimension of the sliding block part 41 along the fixed seat 21 is less than or equal to two-thirds of the axial dimension of the fixed seat 21, so that when the handle lever 10 needs to be locked, the length of the locking pin 43 inserted into the limiting hole 13 of the handle lever 10 is at least one-third of the total length.
[0057] As Figure 2As shown, in an embodiment of the present application, the end face of the fixed seat 21 towards the handle knob 10 has a plurality of blind holes, and a spring 22 and a steel ball 23 are arranged in each blind hole, and the two ends of the spring 22 respectively abut the hole bottom of the blind hole and the steel ball 23. Moreover, the handle seat assembly 20 further comprises a pressing sheet 24, and the pressing sheet 24 has a plurality of first through holes corresponding to the blind holes on the fixed seat 21. The pressing sheet 24 is fixed on the end face of the fixed seat 21 towards the handle knob 10, and at least a part of the steel ball 23 in the blind hole protrudes from the first through hole of the pressing sheet 24 and protrudes from the surface of the pressing sheet 24 away from the fixed seat under the pushing of the spring 22. Correspondingly, the square rod assembly 30 comprises a limiting sheet 31, and the limiting sheet 31 has a plurality of second through holes corresponding to the first through holes, the limiting sheet 31 is located between the pressing sheet 24 and the end face of the handle knob 10, and the spherical cap portion of the steel ball 23 on the fixed seat 21 is embedded in the second through hole to limit the rotation of the square rod assembly 30. That is, when the steel ball 23 is embedded in the second through hole, a relatively large force is required to make the handle knob 10 and the square rod assembly 30 rotate, so as to facilitate avoiding loosening of the handle knob 10.
[0058] In addition, the fixed seat 21 comprises an axial first central through hole 214, the pressing sheet 24 has a second central through hole 241, the limiting sheet 31 has a third central through hole 311, the square rod assembly 30 comprises a nut 33 and a rotating shaft 32, the rotating shaft 32 passes through the first central through hole 214, the second central through hole 241 and the third central through hole 311 in sequence, and then the limiting sheet 31 and the pressing sheet 24 are locked with the fixed seat 21 through the nut 33. The first end of the rotating shaft 32 has a radial threaded hole 321, the first end of the rotating shaft 32 and the nut 33 are inserted into the handle knob 10, and are locked and fixed through a locking screw 12 threadedly connected to the radial threaded hole 321, and the locking screw 12 is also threadedly connected to the threaded hole 11 of the handle knob 10. Through the above structure, not only the handle knob 10 and the square rod assembly 30 can be stably fixed, but also the installation and disassembly of the handle knob 10 are facilitated.
[0059] In an embodiment of the present application, the square rod assembly 30 further comprises a square steel 34 and a clamping ring 35, wherein the square steel 34 is coaxially connected to the tail end of the rotating shaft 32, the clamping ring 35 is sleeved on the square steel 34, and the outer periphery of the clamping ring 35 abuts against the inner wall of the first central through hole 214 of the fixed seat 21.
[0060] In actual application, the square rod assembly 30 can also adopt other existing structures and be assembled with the handle knob assembly 20 through other existing structures, which will not be described herein.
[0061] The above merely describes a preferred embodiment of the present application, and the protection scope of the present application is not limited thereto, and any person skilled in the art can easily think of changes or replacements within the technical scope disclosed by the present application, which should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.
Claims
1. A baseless handle, characterized in that, The handle set comprises a handle, a handle base assembly, a square rod assembly and a switch assembly, the handle base assembly comprises a fixing base for being fixed to a door or window surface, the handle and the fixing base are connected axially through the square rod assembly, and the handle is fixedly connected with the square rod assembly, and the fixing base is rotatably connected with the square rod assembly; The switch assembly comprises a slider, a connecting part and a lock pin, and the slider and the lock pin are connected through the connecting part; the fixing base comprises an axial through hole and an axial connecting groove, the axial connecting groove extends axially from an end surface of the fixing base facing away from the handle to the handle, and a part of the axial through hole is connected with the outer circumferential surface of the fixing base through the axial connecting groove; the switch assembly is fixed to the fixing base, and the lock pin is inserted into the axial through hole, the slider is attached to the outer circumferential surface of the fixing base, the connecting part is embedded in the axial connecting groove and drives the lock pin to slide in the axial through hole under the drive of the slider; the end surface of the handle facing the fixing base has a plurality of limiting holes matched with the lock pin, and the switch assembly prevents the handle from rotating relative to the fixing base by inserting the lock pin into any one of the limiting holes.
2. A baseless handle according to claim 1, wherein, The outer circumferential surface of the fixing base has an axial sliding groove, the axial connecting groove penetrates the axial through hole through the bottom wall of the axial sliding groove, and the axial dimension of the axial sliding groove is greater than the axial dimension of the slider, and the width of the axial sliding groove is matched with the width of the slider; when the switch assembly is fixed to the fixing base, the slider is embedded in the axial sliding groove and slides along the fixing base in the axial direction under the limitation of the axial sliding groove.
3. A baseless handle according to claim 2, wherein, The axial sliding groove axially penetrates the outer circumferential surface of the fixing base, and the two axial groove walls of the axial sliding groove have two groups of first limiting parts distributed along the axial direction of the fixing base; The two axial side walls of the slider have second limiting parts corresponding to the first limiting parts, and when the second limiting part is limited by one group of first limiting parts, one end of the lock pin is inserted into one of the limiting holes of the handle; when the second limiting part is limited by the other group of first limiting parts, the lock pin is completely located in the fixing base.
4. A baseless handle according to claim 3, wherein, Each group of first limiting parts is composed of first clamping grooves respectively located on the two axial groove walls of the axial sliding groove, and the second limiting part is composed of first clamping blocks respectively located on the two axial side walls of the slider; or, Each group of first limiting parts is composed of second clamping blocks respectively located on the two axial groove walls of the axial sliding groove, and the second limiting part is composed of second clamping grooves respectively located on the two axial side walls of the slider.
5. The baseless handle of claim 1, wherein, The connecting part is plate-shaped and is vertically connected to the bottom of the inner side surface of the slider, the connecting part has an assembly hole, and the lock pin is fixed to the connecting part by being inserted into the assembly hole.
6. The baseless handle of claim 1, wherein, The outer side surface of the slider has a protruding strip arranged along the circumferential direction of the fixing base.
7. A baseless handle according to claim 6, wherein, The length of the lock pin is matched with the axial dimension of the fixing base, and the axial dimension of the slider along the fixing base is less than or equal to two-thirds of the axial dimension of the fixing base.
8. A baseless handle according to any one of claims 1 to 7, wherein, The end surface of the fixed seat facing the handle bar is provided with a plurality of blind holes, and a spring and a steel ball are arranged in each blind hole; the handle seat assembly further comprises a pressing plate provided with a plurality of first through holes; the pressing plate is fixed to the end surface of the fixed seat facing the handle bar, and at least a part of the steel ball in the blind hole protrudes from the surface of the pressing plate away from the fixed seat under the pushing of the spring; The square rod assembly comprises a limiting plate provided with a plurality of second through holes corresponding to the first through holes, and the limiting plate is located between the pressing plate and the end surface of the handle bar and is limited in rotation by the spherical crown of the steel ball in the second through hole.
9. A baseless handle according to claim 8, wherein, The fixed seat comprises an axial first central through hole, the pressing plate is provided with a second central through hole, and the limiting plate is provided with a third central through hole; the square rod assembly comprises a nut and a rotating shaft, the rotating shaft passes through the first central through hole, the second central through hole and the third central through hole in sequence, and the limiting plate and the pressing plate are locked with the fixed seat by the nut; the first end of the rotating shaft is provided with a radial threaded hole, the first end of the rotating shaft and the nut are inserted into the handle bar, and are locked and fixed by a locking screw threadedly connected to the radial threaded hole.
10. A baseless handle according to claim 9, wherein, The square rod assembly comprises a square steel and a clamping ring, the square steel is coaxially connected to the tail end of the rotating shaft, and the clamping ring is sleeved on the square steel and abuts against the inner wall of the first central through hole of the fixed seat.