Heavy-duty friction operating handle

Abstract

The present invention discloses a heavy-load friction operating handle, comprising a panel and a rocking rod, wherein a panel through-slot is provided on the panel and a limit plate is installed on the outer end surface of the panel, and a guide slot is provided on the limit plate; the panel is directly or indirectly assembled and fixed to the first support plate and one end of the second support plate; the first support plate and the second support plate are respectively assembled with the rotating shaft for circumferential rotation and axial sliding; the rotating shaft is respectively provided with an installation slot and a friction plate, one end of the rocking rod passes through the guide slot, the panel through-slot and the installation slot, and the hinge shaft passes through the third shaft hole on the third support plate and is hinged to the rocking rod after the rotating shaft; the third support plate is installed on the base, the base is sleeved on the rotating shaft, and a locking slot is provided on the inner side of the base, the second friction plate, the friction disc, the wave spring and the first friction plate are installed in the locking slot, the second friction plate, the wave spring and the first friction plate are respectively sleeved on the rotating shaft and can be axially slidably assembled with it, and the wave spring is installed between the first friction plate and the pressure plate.

Description

Technical Field

[0001] The present invention relates to the field of industrial remote control, and in particular to a heavy-load friction operating handle. Background Art

[0002] Industrial remote control joysticks are crucial components in construction machinery. They not only address the challenge of on-site manual operation but also enhance the integration of machinery, driving industrial automation throughout society. Due to their frequent use, industrial joysticks require high reliability and durability, while also being adaptable to specific operating conditions.

[0003] Heavy-duty operating handles often require higher safety. In order to prevent the handle from shifting during operation, the handle needs to be limited. Conventional handles will increase the difficulty of operation and consume more effort when limiting, which is not in line with ergonomic design. At the same time, a set of handle devices is not easy to match multiple sets of operating methods. Summary of the Invention

[0004] In response to the shortcomings of the existing technology, the present invention provides a heavy-duty friction operating handle, which overcomes the shortcomings of the existing technology. It designs a structure that uses a wave spring to limit the operating handle, and an operating device that cooperates with a limit plate and an operating panel to meet the need of using multiple operating systems with the same device.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions:

[0006] A heavy-duty friction operating handle includes a panel and a rocker. The panel is provided with a through-panel slot and a limit plate is installed on the outer end surface of the panel. The limit plate is provided with a guide groove.

[0007] The panel is directly or indirectly assembled and fixed to one end of the first support plate and the second support plate; the first support plate and the second support plate are respectively assembled to the rotating shaft so as to be rotatable in a circular manner and slidable in an axial direction; the rotating shaft is respectively provided with a mounting groove and a friction disk, one end of the rocker passes through the guide groove, the panel, and the mounting groove, and the hinge shaft passes through the third shaft hole on the third support plate and the rotating shaft and is hinged to the rocker;

[0008] The third support plate is installed on the base, the base is sleeved on the rotating shaft, and a locking groove is provided on the inner side of the base, the second friction plate, friction disc, wave spring and first friction plate are installed in the locking groove, the second friction plate, wave spring and first friction plate are respectively sleeved on the rotating shaft and can be axially slidably assembled with them, and the wave spring is installed between the first friction plate and the pressure plate.

[0009] Preferably, the guide groove includes a center groove, a first guide groove, and a second guide groove. The first guide groove and the second guide groove are respectively located on both sides of the center groove. The center groove corresponds to the center position of the rocker. A panel through groove is provided at the position corresponding to the panel and the guide groove.

[0010] Preferably, the other ends of the first support plate and the second support plate are connected and fixed by copper columns.

[0011] Preferably, the first support plate and the second support plate are respectively provided with a first axial hole and a second axial hole, and the first axial hole and the second axial hole are respectively installed with a first shaft sleeve and a second shaft sleeve, and the first shaft sleeve and the second shaft sleeve are respectively fitted on both ends of the limiting shaft.

[0012] Preferably, a PCB board is installed on the outside of the second support plate, a Hall sensor is installed on the PCB board, and a magnet is installed on one end of the rotating shaft close to the second support plate; the PCB board is installed in the shell, and the shell is fixed to the second support plate.

[0013] Preferably, the first shaft sleeve passes through the pressing plate and is assembled with the first shaft hole.

[0014] Preferably, the first friction plate and the second friction plate are respectively engaged with the locking grooves, and the end surfaces of the first friction plate and the second friction plate both extend beyond the end surface of the friction disc.

[0015] Preferably, one end of the rocker passes through the guide groove, the panel through groove, and the mounting groove and is directly opposite to the trigger piece of the micro switch; the micro switch is installed at the bottom of the first support plate, and when the rocker enters the middle groove, the bottom of the rocker applies pressure to the trigger piece so that the trigger piece triggers the micro switch.

[0016] Preferably, a torsion spring is installed between the second support plate and the rocker, one end of the torsion spring is fixed to the third support plate, and the other end is pressed against the rocker, and the torsion spring is used to keep the rocker in the middle slot.

[0017] Preferably, the widths of the median groove, the first guide groove, and the second guide groove are all greater than the diameter of the rocker; the first support plate and the second support plate are respectively fixed on the fixing plate, and the fixing plate is assembled and fixed to the panel.

[0018] The present invention provides a heavy-duty friction operating handle, which has the following beneficial effects:

[0019] 1. The rocker can be limited in position. The wave spring can fix the rocker in any position during operation. The movement of the rocker drives the magnet in the shaft to rotate, and the analog signal value output by the PCB board changes.

[0020] 2. The rebound direction of the wave spring is perpendicular to the moving direction of the rocker. The wave spring limits the rocker through friction. When the rocker is pulled, it will not generate much resistance to the rocker, which is ergonomic.

[0021] 3. The rocker slides in the grooves of the limit plate and the operation panel. By replacing the limit plate, different operating methods can be obtained to meet the usage habits of different people.

[0022] 4. Redundant safety protection design, equipped with mechanical lock and electronic lock at the same time, common restrictions of wave spring, torsion spring and micro-electronics, to provide safety protection for the device at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for describing the embodiments or the prior art.

[0024] Figure 1 It is a structural schematic diagram of the present invention.

[0025] Figure 2 It is a structural schematic diagram of the present invention.

[0026] Figure 3 It is a structural schematic diagram of the present invention.

[0027] Figure 4 for Figure 3 Middle AA section view.

[0028] Figure 5 for Figure 3 Middle BB cross-section view.

[0029] Figure 6 It is an exploded view of the parts of the present invention.

[0030] Figure 7 It is an exploded view of the parts of the present invention.

[0031] Figure 8 It is an exploded view of the parts of the present invention.

[0032] Figure 9 It is an exploded view of the parts of the present invention.

[0033] Figure 10 for Figure 9 Middle CC section view. DETAILED DESCRIPTION

[0034] In order to make the purpose, technical solutions and advantages of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the present invention.

[0035] like Figure 1-10As shown, a heavy-loaded friction operating handle includes a panel 110 and a rocker 210. The panel 110 is provided with a through panel groove and a limit plate 120 is installed on the outer end face of the panel 110. The limit plate 120 is provided with a guide groove. In this embodiment, the guide groove includes a center groove 121, a first guide groove 122, and a second guide groove 123. The first guide groove 122 and the second guide groove 123 are respectively located on both sides of the center groove 121, and the center groove 121 corresponds to the center position of the entire handle; a through panel groove 111 is provided at the corresponding position of the panel 110 and the guide groove.

[0036] The panel 110 is directly or indirectly assembled and fixed to one end of the first support plate 130 and the second support plate 140, and the other ends of the first support plate 130 and the second support plate 140 are connected and fixed via a copper column 150;

[0037] The first support plate 130 and the second support plate 140 are respectively provided with a first shaft hole 131 and a second shaft hole 141. The first shaft hole 131 and the second shaft hole 141 are respectively installed with a first shaft sleeve 610 and a second shaft sleeve 620. The first shaft sleeve 610 and the second shaft sleeve 620 are respectively fitted on both ends of the limiting shaft 230.

[0038] A PCB is mounted on the outside of the second support plate 140, which is then mounted within the housing 310. The housing 310 is secured to the second support plate 140. A Hall effect sensor is mounted on the PCB, and a magnet is mounted on the end of the rotating shaft 230 proximal to the second support plate 140. During use, the rotating shaft rotates, causing the magnet to displace circumferentially. The Hall effect sensor detects changes in the magnetic field and changes its output signal, thereby achieving the purpose of changing the output signal with the rotation of the joystick. Preferably, the PCB is sealed between the second support plate 140 and the housing 310 with epoxy resin, thereby achieving sealing, waterproofing, and dustproofing of the PCB.

[0039] The rotating shaft 230 is respectively provided with a mounting groove 231 and a friction plate 232. One end of the rocker 210 passes through the guide groove, the panel through groove 111, and the mounting groove 231, and is aligned with the trigger plate of the micro switch 320. The hinge shaft 220 passes through the third shaft hole 421 on the third support plate 420 and the rotating shaft 230, and is hingedly connected to the rocker 210, thereby achieving the installation and hinge connection between the rocker 210 and the rotating shaft 230.

[0040] The third support plate 420 is mounted on the base 410, which is sleeved on the rotating shaft 230. A locking groove 412 is provided on the inner side of the base 410. The second friction plate 520, the friction disc 232, the wave spring 530, and the first friction plate 510 are installed in the locking groove 412. The second friction plate 520, the wave spring 530, and the first friction plate 510 are respectively sleeved on the rotating shaft 230 and can be axially slidably assembled therewith. The wave spring 530 is installed between the first friction plate 510 and the pressure plate 630. The first shaft sleeve passes through the pressure plate 630 and is assembled with the first shaft hole 131, thereby achieving relative fixing of the pressure plate 630 in the axial direction of the first shaft hole 131;

[0041] The wave spring 530 is used to elastically deform when the distance between the first friction plate 510 and the pressure plate 630 decreases, thereby storing elastic force and generating elastic damping. The base 410 is installed and fixed in the base mounting groove 132 on the inner side of the first support plate 130. A limiting edge 411 is provided on the end surface of the base 410 near the pressure plate 630. A limiting ring groove 101 is formed between the pressure plate 630 and the inner side wall of the base mounting groove 132. The limiting ring groove 101 engages with the limiting edge 411 to limit the maximum position of the base 410 and the base mounting groove 132.

[0042] The end faces of the first friction plate 510 and the second friction plate 520 both extend beyond the end face of the friction disc 232 . This design is mainly to prevent the friction disc from contacting the base 410 when the shaft rotates, thereby affecting the normal rotation of the shaft, while also protecting the friction disc 232 .

[0043] The microswitch 320 is mounted on the bottom of the first support plate 130. When the rocker 210 enters the neutral slot 121, the bottom of the rocker applies pressure to the trigger plate, causing the trigger plate to trigger the microswitch 320, indicating that the rocker is in the neutral position. To adjust the rocker in a non-neutral position, the rocker 210 is first rotated about the hinge shaft 220, causing it to enter the first guide slot 122 or the second guide slot 123. During this process, the rocker 210 drives the rotating shaft 230 axially toward the wave spring 530, thereby squeezing the wave spring 530. The wave spring 530 is compressed and stores elastic force. The first friction plate 510 is pressed against the friction disc 232 by the elastic force of the wave spring 530, thus resisting the circumferential rotation of the rotating shaft. This design allows the rocker to be locked and fixed in any position, thereby limiting and locking the rocker. Furthermore, once the rocker leaves the neutral slot 121, the microswitch is deactivated, and the handle begins to receive signal input. This design allows the joystick to enter a low-power standby state when in the neutral position, reducing energy consumption. In this embodiment, an MCU can be mounted on the PCB board. The MCU's signal terminals are connected to the Hall sensor and the microswitch's signal terminals, respectively. The MCU can analyze the Hall sensor's signal and determine whether the microswitch is triggered. Furthermore, the MCU can communicate with external devices, converting the joystick input signal into a power-switching signal for output.

[0044] Preferably, the first friction plate 510 and the second friction plate 520 are respectively engaged with the locking groove 412, so that the first friction plate 510 and the second friction plate 520 cannot rotate along with the circumference of the friction disk.

[0045] Preferably, a torsion spring 430 is installed between the third support plate 420 and the rocking bar 210. One end of the torsion spring 430 is fixed to the third support plate 420, and the other end is pressed or fixed to the rocking bar 210. The torsion spring 430 is used to keep the rocking bar 210 in the neutral groove 121. Once the rocking bar is out of the neutral groove 121, the torsion spring 430 is compressed and stores elastic force. Once the resistance of the rocking bar disappears, the torsion spring will drive the rocking bar to return to the neutral groove 121, thereby realizing automatic resetting of the rocking bar.

[0046] The widths of the center slot, first guide slot, and second guide slot are all greater than the diameter of the rocker, allowing the rocker to rock in the width direction of the center slot, first guide slot, and second guide slot (the diameter of the rocker). When the rocker is located within the first and second guide slots, the friction between the friction disc, first friction plate, and second friction plate prevents the torsion spring from driving the rocker back to its original position. Furthermore, the rocker is self-locking due to this friction, but this friction does not affect the rotation of the rocker's drive shaft. To reset the rocker, the rocker is moved toward the center slot, releasing the compression on the wave spring. The torsion spring then resets the rocker using its own elastic force.

[0047] This device has a redundant safety protection design and is equipped with a mechanical lock (wave spring and torsion spring) and an electronic lock (micro switch). The wave spring, torsion spring and micro switch cooperate with the rocker to simultaneously protect the device, lock it, and detect whether the rocker is in the middle position. Since the rebound direction of the wave spring 10 is perpendicular to the movement direction of the rocker 12, the wave spring 10 limits the rocker 12 by friction. When the rocker 12 is pulled, it will not produce a large resistance to the movement of the rocker 12, which is ergonomic. In actual use, different control methods and control angles can be obtained through different guide groove designs, thereby meeting more needs in use. In this embodiment, limit plates with guide grooves of various specifications are directly set, and the limit plates can be replaced.

[0048] Preferably, the first support plate 130 and the second support plate 140 are respectively fixed to the fixing plate 160, and the fixing plate 160 is assembled and fixed to the panel 110. This method is an indirect assembly of the first support plate 130 and the second support plate 140. Of course, the first support plate 130 and the second support plate 140 can be directly installed on the panel, thereby eliminating the fixing plate 160.

[0049] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. Heavy-duty friction operating handle, characterized by: It includes a panel and a rocker, wherein the panel is provided with a through panel slot and a limit plate is installed on the outer end surface of the panel, and the limit plate is provided with a guide slot; The panel is directly or indirectly assembled and fixed to one end of the first support plate and the second support plate; the first support plate and the second support plate are respectively assembled to the rotating shaft so as to be rotatable in a circular manner and slidable in an axial direction; the rotating shaft is respectively provided with a mounting groove and a friction disk, one end of the rocker passes through the guide groove, the panel, and the mounting groove, and the hinge shaft passes through the third shaft hole on the third support plate and the rotating shaft and is hinged to the rocker; The third support plate is mounted on the base, which is sleeved on the rotating shaft, and a locking groove is provided on the inner side of the base, in which the second friction plate, friction disc, wave spring and first friction plate are installed, the second friction plate, wave spring and first friction plate are respectively sleeved on the rotating shaft and can be axially slidably assembled therewith, and the wave spring is installed between the first friction plate and the pressure plate; A PCB is mounted on the outside of the second support plate, a Hall sensor is mounted on the PCB, and a magnet is mounted on one end of the rotating shaft close to the second support plate; the PCB is mounted in the housing, and the housing is fixed to the second support plate; One end of the rocker passes through the guide slot, the panel slot, and the mounting slot, and is aligned with the trigger piece of the micro switch; the micro switch is mounted on the bottom of the first support plate, and when the rocker enters the neutral slot, the bottom of the rocker applies pressure to the trigger piece, causing the trigger piece to trigger the micro switch; A torsion spring is installed between the third support plate and the rocker, one end of the torsion spring is fixed to the third support plate and the other end is pressed against the rocker, and the torsion spring is used to keep the rocker in the middle slot.

2. The heavy-duty friction operating handle according to claim 1, characterized in that: The guide groove includes a middle groove, a first guide groove, and a second guide groove. The first guide groove and the second guide groove are respectively located on both sides of the middle groove. The middle groove corresponds to the middle position of the rocker. A panel through groove is provided at the corresponding position of the panel and the guide groove.

3. The heavy-duty friction operating handle according to claim 1, characterized in that: The other ends of the first support plate and the second support plate are connected and fixed by copper columns.

4. The heavy-duty friction operating handle according to claim 1, characterized in that: The first support plate and the second support plate are respectively provided with a first shaft hole and a second shaft hole, and the first shaft hole and the second shaft hole are respectively installed with a first shaft sleeve and a second shaft sleeve, and the first shaft sleeve and the second shaft sleeve are respectively fitted with both ends of the limiting shaft.

5. The heavy-duty friction operating handle according to claim 4, characterized in that: The first shaft sleeve passes through the pressing plate and is assembled with the first shaft hole.

6. The heavy-duty friction operating handle according to claim 1, characterized in that The first friction plate and the second friction plate are respectively engaged with the locking groove, and the end surfaces of the first friction plate and the second friction plate both exceed the end surface of the friction disc.

7. The heavy-duty friction operating handle according to any one of claims 1 to 6, characterized in that: The widths of the median groove, the first guide groove and the second guide groove are all greater than the diameter of the rocker; the first support plate and the second support plate are respectively fixed on the fixing plate, and the fixing plate is assembled and fixed to the panel.

Images