CN114620649A - Operating handle with integrated detection switch for pallet truck - Google Patents
Operating handle with integrated detection switch for pallet truck Download PDFInfo
- Publication number
- CN114620649A CN114620649A CN202210006341.4A CN202210006341A CN114620649A CN 114620649 A CN114620649 A CN 114620649A CN 202210006341 A CN202210006341 A CN 202210006341A CN 114620649 A CN114620649 A CN 114620649A
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- handle
- detection switch
- pallet truck
- mounting
- operating handle
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F9/00—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes
- B66F9/06—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes movable, with their loads, on wheels or the like, e.g. fork-lift trucks
- B66F9/075—Constructional features or details
- B66F9/0759—Details of operating station, e.g. seats, levers, operator platforms, cabin suspension
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F9/00—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes
- B66F9/06—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes movable, with their loads, on wheels or the like, e.g. fork-lift trucks
- B66F9/075—Constructional features or details
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- Engineering & Computer Science (AREA)
- Transportation (AREA)
- Structural Engineering (AREA)
- Civil Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mechanical Engineering (AREA)
- Handcart (AREA)
Abstract
The invention discloses an operating handle with an integrated detection switch for a pallet truck, which comprises a handle main body and a connecting seat, wherein a matched rotating shaft is arranged between the handle main body and the connecting seat; the handle is characterized in that a detection switch matched with the in-place cam is arranged in the mounting shell, a connecting arm extending out of the mounting shell is arranged on the in-place cam, a connecting hole in a kidney-shaped hole shape is formed in the connecting arm, and a connecting shaft in clearance fit with the connecting hole is arranged on the handle body. The invention has the advantages that the defects that the existing detection switch is greatly influenced by the position of the handle body, the detection precision is influenced and the service life of the detection switch is not influenced can be overcome, the assembly of the handle body is convenient, and the repeated debugging is not needed in the installation of the handle body.
Description
Technical Field
The application relates to a pallet truck handle technical field especially relates to a pallet truck is with operating handle who has integrated form detection switch.
Background
The pallet truck is usually operated by an operating handle, for example, in the chinese patent document, the patent number CN 2015206655098 is issued on 2.3.2016. this application discloses an intelligent handle controller applied to the pallet truck, which comprises a power input interface, a controller signal transmitting system, and an electromagnetic control module, wherein the end of the power input interface is provided with the controller signal transmitting system; the controller signal transmitting system is matched with the electromagnetic control module through a forklift integrated circuit micro-control system; the electromagnetic control module is arranged at the lower end of the forklift quick reversing module; the forklift fast reversing module is connected with a speed regulating button through a forklift integrated circuit micro-control system; the speed regulating button and the handle emergency reverse button are fixed through a small bolt; a handle reversing switch is arranged on the handle emergency reverse button; the handle reversing switch is connected with the handle controller shell through a whistle button.
According to the standard, when the handle of the pallet truck is positioned at two positions of standing or pushing down to the bottom, the pallet truck in running needs to be braked emergently, the pallet truck in a static state can not move forward or backward, and the forward/backward operation can be carried out only when the handle is positioned in a middle operable range; the scheme adopted before I selects is that a detection switch is arranged on a handle seat to directly detect the shape of a boss on a handle and judge the position of the handle.
The prior art has the following two problems: one is that in the production and assembly process, because the parts have error ranges in different sizes in batches, repeated debugging is needed on site when the detection switch is assembled every time so as to ensure that the detection switch is arranged at a reasonable position and accurately judge the state of the handle; the detection switch is divided into two types, one type is a proximity switch, the other type is a microswitch, the effective detection distance of the proximity switch is about 5cm, when metal is less than 5cm away from the detection switch, the detection switch can send a signal, when the distance is more than 5cm, the other type of signal can be sent, so that the position of the handle is detected, the other type of microswitch is similar to the proximity switch in principle, the non-contact type of the proximity switch is changed into the contact type, the effective detection stroke is about 5cm, the detection distance of the detection switch is small, so that the microswitch needs to be repeatedly debugged and ensured to be installed at a proper position, the installation space at the position is small, the position of the detection switch is troublesome to finely adjust every time, and the production assembly efficiency is influenced; the other is the handle as the part that can move about, because the wearing and tearing in the manufacturing error of spare part and the later stage use, the handle is except normal rotation, often still can have the displacement of axial and radial two directions, the too big position that can lead to the detection switch to detect the handle and then detect the inefficacy, cause the wrong thought handle of detection switch to be in same state always, and can drive micro-gap switch's gyro wheel swing back and forth, greatly reduced micro-gap switch life, radial displacement volume can lead to detecting the inefficacy when not big, can directly hit the detection switch when the displacement volume is big.
Disclosure of Invention
Based on the defects in the prior art, the invention provides the operating handle with the integrated detection switch for the pallet truck, which can overcome the defects that the existing detection switch is greatly influenced by the position of the handle main body, the detection precision is influenced and the service life of the detection switch is not prolonged, is convenient for assembling the handle main body, and ensures that the handle main body is not required to be repeatedly debugged.
In order to achieve the above object, the present invention adopts the following technical solutions.
An operating handle with an integrated detection switch for a pallet truck comprises a handle main body and a connecting seat, wherein a matched rotating shaft is arranged between the handle main body and the connecting seat; the handle is characterized in that a detection switch matched with the in-place cam is arranged in the mounting shell, a connecting arm extending out of the mounting shell is arranged on the in-place cam, a connecting hole in a kidney-shaped hole shape is formed in the connecting arm, and a connecting shaft in clearance fit with the connecting hole is arranged on the handle body.
Through setting up the installation casing and with the coaxial cam that targets in place that sets up of pivot, turn into the handle main part with the direct cooperation of detection switch and handle main part through the indirect cooperation of the cam that targets in place, even there is error in the installation of handle main part, but detection switch still very stable with the cooperation of the cam that targets in place, connecting hole cooperation connecting axle, the shape of connecting hole is the waist type, make the connecting hole have the regulation ability of removal, the connecting axle can have the space that slides at the connecting hole, make the connecting axle have the ability of removing in the stroke, thereby reduce handle main part mounted position and structural accuracy requirement, consequently, the installation of handle main part need not to carry out debugging many times, eliminate the influence of handle main part position to detection switch, guarantee the reliability of testing result.
Preferably, the detection switch adopts a microswitch, the microswitch comprises a detection elastic rod which is obliquely arranged, the lower side of the in-place cam is in contact fit with the detection elastic rod, two detection grooves which are matched with the detection elastic rod are arranged on the in-place cam, a limit cambered surface which is convexly arranged is arranged between the two detection grooves, and the detection grooves and the limit cambered surface are in smooth transition. The micro-gap switch realizes and the cooperation of the cam that targets in place through detecting the bullet pole, and when the cam that targets in place rotated two extreme positions, it detected the cooperation of groove with two respectively to detect the bullet pole, detected the bullet pole and detected the cooperation of groove and correspond handle main part upright respectively and handle main part two positions on earth down, and when these two positions, the pallet truck of the in-process of marcing carries out emergency braking, and quiescent condition's pallet truck can't advance or retreat, guarantees the security that the pallet truck used.
Preferably, the connecting shaft is parallel to the rotation axis. The stability of the matching of the connecting shaft and the connecting hole is ensured.
Preferably, the outer side of the installation shell is provided with a cover plate matched with the installation shell, an installation cavity is formed in the installation shell, the in-place cam is arranged in the installation cavity, and an open slot used for being matched with the connecting arm is formed in one side of the installation cavity of the installation shell. The arrangement of the cover plate and the installation cavity ensures the external protection of the in-place cam and the detection switch, the detection reliability of the detection switch is improved, the open slot completes the rotation avoidance of the in-place cam, and the rotation reliability of the in-place cam is ensured.
Preferably, the installation shell is provided with an avoiding recess, the avoiding recess and the open slot are positioned on two opposite sides of the installation shell, and the bottom of the avoiding recess forms an inward convex limiting part in the installation cavity. Dodge sunken setting, on the one hand can be used for setting up the screw, improves the reliability that installation casing and connecting seat are connected, and on the other hand can be spacing to the cam formation that targets in place through forming spacing portion, prevents that detection groove and micro-gap switch's on the cam that targets in place motion is excessive, guarantees micro-gap switch's security.
Preferably, the connecting shaft comprises a connecting shaft section matched with the handle main body and a matching shaft section matched with the connecting hole, the connecting shaft section and the matching shaft section are arranged in parallel, a middle shaft section is arranged between the connecting shaft section and the matching shaft section, a plurality of limiting inclined teeth are arranged on the outer side of the connecting shaft section, a limiting screw tube of the connecting shaft section is arranged on the handle main body, an inclined opening groove matched with the limiting inclined teeth is formed in the limiting screw tube, and a locking cap matched with the limiting screw tube in a threaded manner is arranged on the outer side of the limiting screw tube. The limiting inclined teeth on the connecting shaft section are matched with the inclined opening groove, the connecting shaft section can spirally rotate around the limiting screw tube, when the position processing error for arranging the connecting shaft on the handle main body is overlarge, fine adjustment can be realized by the action of the connecting shaft around the connecting shaft section, the rotating angle position of the connecting shaft is limited by the axial movement capacity of the connecting shaft, because the connecting shaft and the handle main body have the tendency of relative rotation, the connecting shaft and the handle main body cannot be connected through threads, the position of the conventional rotating adjusting structure after adjustment is not fixed well, and the limiting inclined teeth of the connecting shaft section are locked through the locking cap, the axial movement capacity of the connecting shaft section is actually locked, and after the axial movement capacity is limited, the connecting shaft cannot move relative to the handle main body due to the structural action of the inclined opening groove after the locking cap locks the connecting shaft section, so as to ensure the position reliability of the connecting shaft, but also the connecting shaft has the capability of position fine adjustment.
Preferably, the rotating shaft is provided with a coaxially arranged mounting hole, the mounting shell is provided with a mounting lug matched with the mounting hole and a rotating shaft coaxially arranged with the mounting lug, and the in-place cam is rotatably arranged on the rotating shaft. The unification of the in-place cam and the axis of the rotating shaft is realized.
Preferably, the connection hole is located at an end of the connection arm. The connecting shaft and the connecting hole are matched on the outer side of the mounting shell through the connecting arm, and the positions of the connecting shaft and the connecting hole are conveniently guaranteed.
Preferably, the axis of the connecting hole is located on the center line of the connecting arm, and the center line of the connecting arm is perpendicularly intersected with the axis of the rotating shaft. The connecting holes are positioned in the radial direction of the rotating shaft, so that even if the handle main body is abraded or misplaced, the rotation synchronism of the handle main body and the in-place cam can be ensured after the handle main body and the in-place cam are matched through the connecting holes; because the connecting shaft and the handle main body are rigidly connected and the connecting shaft passes through the waist-shaped groove, when the handle main body drives the connecting shaft to move axially, the connecting shaft slides axially in the waist-shaped groove, and no influence is caused.
Preferably, the outer end of the detection elastic rod is provided with a contact roller which is rotatably arranged at the upper side of the detection elastic rod.
The stability of the matching of the micro switch and the two detection grooves is improved.
Preferably, the locking cap comprises a first nut and a second nut which are arranged from inside to outside along the limiting screw pipe, the outer end of the second nut is provided with a limiting ring, and the inner circumferential surface of the limiting ring is a circular table top with a cone angle arranged outwards. The locking cap's locking ability reinforce, two nuts cooperate and play reliable locking effect, and the spacing ring can compress tightly the outer end of spacing screwed pipe for the outer end elastic deformation of spacing screwed pipe ensures that the pivot targets in place reliably.
The invention has the following beneficial effects: can eliminate current detection switch and receive handle main part position influence great, influence the not enough of detection precision and detection switch life, make things convenient for the assembly of handle main part, make the installation of handle main part needn't debug repeatedly.
Drawings
FIG. 1 is a schematic structural diagram of a first embodiment of the present invention.
Fig. 2 is an exploded view of the embodiment of fig. 1 mated with a handle body.
Fig. 3 is a structural schematic view of a second embodiment of the arrangement of the invention on the handle body.
Fig. 4 is a schematic structural view of the present invention in a state where the handle main body is erected.
Fig. 5 is a schematic view of the present invention when the handle body is depressed to the bottom position.
Fig. 6 is a schematic structural diagram of a third embodiment of the present invention.
Fig. 7 is an internal cross-sectional view of the engagement of the retaining coil and locking cap in the embodiment of fig. 6.
In the figure: handle body 1 is connected with base 2, rotating shaft 3, operating handle connecting structure 4, installing shell 5 in place cam 6, cover plate 7, opening groove 8, microswitch 9, positioning pin 10, detecting elastic rod 11 contacting roller 12, limiting plane 13, detecting groove 14, limiting cambered surface 15, connecting hole 17, connecting shaft 18, connecting shaft section 180, middle shaft section 181, matching shaft section 182, limiting helical tooth 183, limiting helical tube 184, beveled groove 185, locking cap 186, first nut 187, second nut 188, limiting ring 189, connecting arm 19, installing hole 20, rotating shaft 21, avoiding sunken 22 installing plate 23.
Detailed Description
The invention is further illustrated with reference to the figures and the specific embodiments.
In the case of the example 1, the following examples are given,
as shown in fig. 1 and 2, an operating handle with an integrated detection switch for a pallet truck comprises a handle main body 1 and a connecting seat 2, a matched rotating shaft 3 is arranged between the handle main body 1 and the connecting seat 2, an operating handle connecting structure comprises an installation shell 5 fixed with the connecting seat 2, the installation shell 5 and the connecting seat 2 are connected through three screws, an in-place cam 6 rotatably arranged in the installation shell 5 is arranged in the installation shell 5, a cover plate 7 matched with the installation shell 5 is arranged on the outer side of the installation shell 5, an installation cavity is arranged in the installation shell 5, the in-place cam 6 is arranged in the installation cavity, and an open slot 8 is formed in one side of the installation cavity of the installation shell 5. The installation shell 5 is provided with an avoiding recess 22 at one side opposite to the opening groove 8, and the groove bottom of the avoiding recess forms an inward convex limiting part in the installation cavity. Dodge sunken 22's setting, on the one hand can be used for setting up the screw, improves the reliability that installation casing and connecting seat are connected, and on the other hand can be spacing to the cam formation that targets in place through forming spacing portion, prevents that detection groove and micro-gap switch's on the cam that targets in place motion is excessive, guarantees micro-gap switch's security. The rotating shaft line of the in-place cam 6 is the axis line of the rotating shaft 3; a round hole can be formed in the mounting shell 5 and used for extending out of the corresponding rotating shaft 3, and a circular sleeve can also be arranged to complete coaxial rotation with the rotating shaft 3. In the embodiment, the rotating shaft 3 is provided with a mounting hole 20 coaxially arranged with the rotating shaft, the mounting shell is provided with a mounting lug matched with the mounting hole 20 and a rotating shaft 21 coaxially arranged with the mounting lug, and the in-place cam is rotatably arranged on the rotating shaft 21. Still be equipped with the detection switch that the cooperation target in place cam 6 in the installation casing 5, detection switch adopts micro-gap switch 9, is equipped with two parallel arrangement's locating pin 10 on the installation casing 5, and detection switch passes through locating pin 10 and accomplishes the plane location, and apron 7 and installation casing 5 accomplish the location that detects the switch direction of height, detection switch simple to operate. Microswitch 9 is including the detection elastic rod 11 that the slope set up, and the cam downside that targets in place and detection elastic rod contact cooperation are equipped with two on the cam that targets in place and can detect 11 complex detection grooves 14 of elastic rod, and the shape that detects groove 14 is the breach groove, and detection elastic rod 11 outer end is equipped with contact roller 12, and contact roller rotates the upside that sets up at detection elastic rod. The detection groove 14 is provided with a limit plane 13 matched with the end surface of the contact roller 12. A convex limiting cambered surface 15 is arranged between the two detection grooves 14, and the detection grooves 14 and the limiting cambered surface 15 are in smooth transition. The positioning cam 6 is engaged with the handle body 1. The in-place cam 6 is provided with a connecting hole 17, the handle body 1 is provided with a connecting shaft 18 which is arranged parallel to the rotating shaft 3, and the connecting shaft 18 is in clearance fit with the connecting hole 17. The connecting hole 17 is in the shape of a cuboid and a waist-shaped combination of semi-cylinders positioned at two ends of the cuboid. The positioning cam 6 is provided with a connecting arm 19 extending out of the mounting case 5, and the connecting hole 17 is located at an end of the connecting arm 19. The axis of the connecting hole 17 is located on the center line of the connecting arm 19, and the center line of the connecting arm 19 is perpendicularly intersected with the axis of the rotating shaft 3.
In the case of the example 2, the following examples are given,
as shown in fig. 2, a pallet truck comprises a handle body 1 and a connecting seat 2, wherein the handle body 1 is connected with the connecting seat 2 through a rotating shaft 3, and the handle body detection switch structure 4 is arranged on the side surfaces of the handle body 1 and the connecting seat 2. The connecting seat 2 comprises two mounting plates 23 which are vertically, parallelly and oppositely arranged at the upper end of the connecting seat, and the mounting shell is fixedly arranged on the outer side of one of the mounting plates through at least three screws.
Microswitch 9 realizes and the cooperation of the cam that targets in place through detecting elastic rod 11, as shown in fig. 4 and fig. 5, when the cam that targets in place rotates two extreme positions, detect elastic rod 11 and detect groove 14 cooperation with two respectively, detect elastic rod 11 and detect the cooperation of groove 14 and correspond handle main part 1 respectively and upright and handle main part 1 and push down two positions to the bottom, when these two positions, the pallet truck of the in-process of marcing carries out emergency braking, the pallet truck of quiescent condition can't advance or retreat, guarantee the security that the pallet truck used. By arranging the installation shell 5 and the in-place cam 6 coaxially arranged with the rotating shaft 3, the direct matching of the detection switch and the handle main body 1 is converted into the indirect matching of the handle main body 1 through the in-place cam 6, the waist-shaped connecting hole 17 has the moving adjusting capacity, the connecting shaft 18 can have a sliding space in the connecting hole 17, so that the connecting shaft 18 has the stroke moving capacity, and the installation position and the structural precision requirements of the handle main body 1 are reduced; even if there is the error in the installation of handle main part 1, the cooperation of detection switch and the cam 6 that targets in place still is very stable, therefore handle main part 1 installation need not to debug many times, eliminates handle main part 1 position to the influence of detection switch, guarantees the reliability of testing result.
In the case of the example 3, the following examples are given,
an operating handle with an integrated detection switch for a pallet truck is shown in fig. 6 and 7, and the difference between the embodiment 3 and the embodiment 1 is that a connecting shaft 18 comprises a connecting shaft section 180 matched with a handle main body and a matched shaft section 182 matched with a connecting hole, the connecting shaft section 180 and the matched shaft section 182 are arranged in parallel, a middle shaft section 181 is arranged between the connecting shaft section 180 and the matched shaft section 182, a plurality of limiting inclined teeth 183 are arranged on the outer side of the connecting shaft section 180, a limiting screw tube 184 connected with the shaft section is arranged on the handle main body, an inclined groove 185 matched with the limiting inclined teeth is arranged on the limiting screw tube, and a locking cap 186 matched with the limiting screw tube in a threaded manner is arranged on the outer side of the limiting screw tube. The locking cap includes first nut 187 and second nut 188 that sets up from inside to outside along spacing screwed pipe, and the outer end of second nut is equipped with spacing ring 189, and the inner peripheral surface of spacing ring is the mesa that the cone angle set up outwards. The spacing spiral shell pipe part that spacing skewed tooth corresponds can be expanded tightly to only this department can form reliable connection with the locking cap. In order to further guarantee the stability of setting up of connecting axle, can set up the round hole of cooperation connecting shaft section outer end in the handle main part, the connecting shaft section stretches into the interior cooperation of round hole, forms two places cooperation jointly with spacing cap to can put the stability on the high connecting axle axis.
The limiting inclined teeth on the connecting shaft section are matched with the inclined opening groove, the connecting shaft section can spirally rotate around the limiting screw tube, when the position processing error for arranging the connecting shaft on the handle main body is overlarge, fine adjustment can be realized by the action of the connecting shaft around the connecting shaft section, the rotating angle position of the connecting shaft is limited by the axial movement capacity of the connecting shaft, because the connecting shaft and the handle main body have the tendency of relative rotation, the connecting shaft and the handle main body cannot be connected through threads, the position of the conventional rotating adjusting structure after adjustment is not fixed well, and the limiting inclined teeth of the connecting shaft section are locked through the locking cap, the axial movement capacity of the connecting shaft section is actually locked, and after the axial movement capacity is limited, the connecting shaft cannot move relative to the handle main body due to the structural action of the inclined opening groove after the locking cap locks the connecting shaft section, so as to ensure the position reliability of the connecting shaft, but also the connecting shaft has the capability of position fine adjustment.
Claims (10)
1. An operating handle with an integrated detection switch for a pallet truck comprises a handle main body and a connecting seat, wherein a matched rotating shaft is arranged between the handle main body and the connecting seat; the handle is characterized in that a detection switch matched with the in-place cam is arranged in the mounting shell, a connecting arm extending out of the mounting shell is arranged on the in-place cam, a connecting hole in a kidney-shaped hole shape is formed in the connecting arm, and a connecting shaft in clearance fit with the connecting hole is arranged on the handle body.
2. The operating handle with the integrated detecting switch for the pallet truck as claimed in claim 1, wherein the detecting switch is a micro switch, the micro switch comprises an inclined detecting elastic rod, the lower side of the positioning cam is in contact fit with the detecting elastic rod, the positioning cam is provided with two detecting grooves which are matched with the detecting elastic rod, a convex limiting arc surface is arranged between the two detecting grooves, and the detecting grooves and the limiting arc surface are in smooth transition.
3. The operating handle with integrated detection switch for the pallet truck as claimed in claim 1, wherein the connecting shaft is parallel to the rotation axis.
4. The operating handle with the integrated detection switch for the pallet truck as claimed in claim 1, wherein a cover plate is provided on the outer side of the mounting housing to fit the mounting housing, a mounting cavity is provided in the mounting housing, the positioning cam is provided in the mounting cavity, and the mounting housing is provided with an open slot on one side of the mounting cavity for fitting the connecting arm.
5. The operating handle with the integrated detection switch for the pallet truck as claimed in claim 4, wherein the mounting housing is provided with an avoiding recess, the avoiding recess and the open slot are located at two opposite sides of the mounting housing, and the bottom of the avoiding recess forms an inwardly protruding limiting portion in the mounting cavity.
6. The operating handle with the integrated detection switch for the pallet truck as claimed in claim 1, wherein the connecting shaft comprises a connecting shaft section matched with the handle body and a matching shaft section matched with the connecting hole, the connecting shaft section and the matching shaft section are arranged in parallel, a middle shaft section is arranged between the connecting shaft section and the matching shaft section, a plurality of limiting helical teeth are arranged on the outer side of the connecting shaft section, a limiting screw tube connected with the shaft section is arranged on the handle body, a helical groove matched with the limiting helical teeth is arranged on the limiting screw tube, and a locking cap in threaded fit with the limiting screw tube is arranged on the outer side of the limiting screw tube.
7. The operating handle with the integrated detecting switch for the pallet truck as claimed in claim 1 or 3, wherein the rotating shaft is provided with a coaxially disposed mounting hole, the mounting housing is provided with a mounting projection fitted to the mounting hole and a rotating shaft disposed coaxially with the mounting projection, and the positioning cam is rotatably disposed on the rotating shaft.
8. The operating handle with integrated detection switch for the pallet truck as claimed in claim 1, wherein the connecting hole is located at an end of the connecting arm; the center line of the connecting hole is positioned on the center line of the connecting arm, and the center line of the connecting arm is vertically intersected with the axis of the rotating shaft.
9. The operating handle with integrated detecting switch for the pallet truck as claimed in claim 2, wherein the outer end of the detecting elastic rod is provided with a contact roller which is rotatably disposed at the upper side of the detecting elastic rod.
10. The operating handle with the integrated detection switch for the pallet truck as claimed in claim 6, wherein the locking cap comprises a first nut and a second nut arranged from inside to outside along the limit screw tube, the outer end of the second nut is provided with a limit ring, and the inner peripheral surface of the limit ring is a circular table surface with a cone angle arranged outwards.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111531151 | 2021-12-14 | ||
| CN2021115311516 | 2021-12-14 |
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| Publication Number | Publication Date |
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| CN114620649A true CN114620649A (en) | 2022-06-14 |
| CN114620649B CN114620649B (en) | 2023-06-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210006341.4A Active CN114620649B (en) | 2021-12-14 | 2022-01-05 | Operating handle with integrated detection switch for pallet truck |
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| CN (1) | CN114620649B (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1180014A (en) * | 1966-04-14 | 1970-02-04 | Eccles Engineering Ltd | Improvements in Control Units for Motor-Driven Trucks. |
| FR2411480A1 (en) * | 1977-12-06 | 1979-07-06 | App Const | Electrical multimeter rotatable switch - has pressure element with two diametrically opposed projections on annular part of plastics cam |
| JP2004131066A (en) * | 2002-09-20 | 2004-04-30 | Hoshizaki Electric Co Ltd | Carrier |
| DE102004040342A1 (en) * | 2004-08-20 | 2006-03-09 | Rema Lipprandt Gmbh & Co. Kg | Pole head for powered warehouse vehicle has Hall sensor for controlling traveling movement of vehicle whose output signal is proportional to angle of rotation of drive switch handle and/or magnet carrier with two permanent magnets |
| US20060089778A1 (en) * | 2004-10-26 | 2006-04-27 | The Raymond Corporation | Pallet truck tiller arm with angular speed mode adjustment and acceleration control |
| KR100656059B1 (en) * | 2005-12-19 | 2006-12-11 | 두산인프라코어 주식회사 | Accelerating signal generating apparatus of non-contacting type for electric powered lift truck |
| CN203450169U (en) * | 2013-08-06 | 2014-02-26 | 浙江中力机械有限公司 | Hand shank arm structure of moving van |
| US20210122403A1 (en) * | 2019-10-23 | 2021-04-29 | Radio Flyer Inc. | Handle release and locking mechanism |
| CN216737468U (en) * | 2021-12-14 | 2022-06-14 | 杭叉集团股份有限公司 | Pallet truck operating handle with integrated detection switch |
-
2022
- 2022-01-05 CN CN202210006341.4A patent/CN114620649B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1180014A (en) * | 1966-04-14 | 1970-02-04 | Eccles Engineering Ltd | Improvements in Control Units for Motor-Driven Trucks. |
| FR2411480A1 (en) * | 1977-12-06 | 1979-07-06 | App Const | Electrical multimeter rotatable switch - has pressure element with two diametrically opposed projections on annular part of plastics cam |
| JP2004131066A (en) * | 2002-09-20 | 2004-04-30 | Hoshizaki Electric Co Ltd | Carrier |
| DE102004040342A1 (en) * | 2004-08-20 | 2006-03-09 | Rema Lipprandt Gmbh & Co. Kg | Pole head for powered warehouse vehicle has Hall sensor for controlling traveling movement of vehicle whose output signal is proportional to angle of rotation of drive switch handle and/or magnet carrier with two permanent magnets |
| US20060089778A1 (en) * | 2004-10-26 | 2006-04-27 | The Raymond Corporation | Pallet truck tiller arm with angular speed mode adjustment and acceleration control |
| KR100656059B1 (en) * | 2005-12-19 | 2006-12-11 | 두산인프라코어 주식회사 | Accelerating signal generating apparatus of non-contacting type for electric powered lift truck |
| CN203450169U (en) * | 2013-08-06 | 2014-02-26 | 浙江中力机械有限公司 | Hand shank arm structure of moving van |
| US20210122403A1 (en) * | 2019-10-23 | 2021-04-29 | Radio Flyer Inc. | Handle release and locking mechanism |
| CN216737468U (en) * | 2021-12-14 | 2022-06-14 | 杭叉集团股份有限公司 | Pallet truck operating handle with integrated detection switch |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114620649B (en) | 2023-06-27 |
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