Encoder with press locking function

Abstract

The utility model discloses an encoder with a press locking function, which comprises an encoding input module and a circuit contact module, and the encoding input module is arranged at the upper end of the circuit contact module; the circuit contact module is composed of a second shell, a base, a pressing locking mechanism and a circuit contact mechanism, the second shell, the pressing locking mechanism and the circuit contact mechanism are all installed at the upper end of the base, meanwhile, the pressing locking mechanism and the circuit contact mechanism are arranged in the second shell, and the circuit contact mechanism is internally provided with two sets of communication circuits; the pressing locking mechanism is used for switching two groups of communication circuits in the circuit contact mechanism; the pressing stroke of the structure is increased, a better pressing hand feeling can be brought, and switching of multiple groups of circuits is also realized, so that the encoder function can better meet multiple use functions.

Description

TECHNICAL FIELD

[0001] The utility model relates to encoder technical field especially a kind of encoder with press locking function. BACKGROUND

[0002] The encoder with press function is composed of grating, circuit module, shell, handle and press mechanism.The grating and handle are fixedly installed in the circuit module, and the grating is periodically shielded from the light-transmitting small hole of the shell by rotating the handle to realize the output of encoding signal;the press mechanism realizes the press function by the deformation-reset of the pot piece.

[0003] The press function principle of the encoder is to press the handle, extrude the pot piece below the handle, deform the pot piece and connect with the conductive part on the conductive part assembly to form a loop, so as to realize press conduction.The press function of the existing encoder is all pot piece structure, the stroke is short and does not have press locking function, the structure function is single, only a group of circuit switching can be realized, and the press feeling is not obvious, which does not meet the use function. UTILITY MODEL CONTENT

[0004] To solve the above technical problems, the utility model provides a kind of encoder with press locking function.

[0005] The utility model is realized by the following technical schemes.

[0006] The utility model provides a kind of encoder with press locking function, including encoding input module and circuit contact module, encoding input module is installed at the upper end of circuit contact module;Circuit contact module is composed of second shell, base, press locking mechanism and circuit contact mechanism, second shell, press locking mechanism and circuit contact mechanism are all installed on the upper end of base, while press locking mechanism and circuit contact mechanism are arranged in second shell, there are two groups of intercommunication circuits in circuit contact mechanism, press locking mechanism is used to switch the two groups of intercommunication circuits in circuit contact mechanism.

[0007] Preferably, the encoding input module includes first shell, circuit module, shaft sleeve, handle, grating and bow spring piece, the first shell is installed on the upper end of the second shell, and the circuit module is installed on the first shell;The handle is arranged in the circuit module from top to bottom and located at the upper end of the second shell, and the shaft sleeve is sleeved on the handle;The grating is sleeved on the handle and located between the upper and lower ends in the first shell, the outer ring of the grating is provided in gear shape, the bow spring piece is installed on the inner side of the first shell, the rack of the outer ring of the grating is adapted to be connected with the bow spring piece, two light-transmitting small holes are provided on the first shell, and the two light-transmitting small holes correspond to the photoelectric conversion device and grating code channel in the circuit module respectively.

[0008] Preferably, the press locking mechanism includes limiting sleeve, camshaft, cam table first sleeve, second sleeve and press spring A.

[0009] The limiting sleeve is embedded in the second shell, a plurality of longitudinal rails are formed in the upper end of the limiting sleeve, a first inclined surface is arranged beside the bottom end of the longitudinal rails, a protrusion is arranged in the middle of the first inclined surface, and the bottom end and the top end of the first inclined surface are connected with the adjacent two longitudinal rails respectively.

[0010] The cam shaft is slidably arranged in the limiting sleeve, the upper end of the cam shaft is arranged in an umbrella shape, a plurality of first protrusions are circumferentially arranged on the umbrella surface end of the cam shaft, the plurality of first protrusions are slidably matched in the plurality of longitudinal rails respectively, and two second inclined surfaces are continuously formed beside the end of the umbrella surface end of the cam shaft and close to the first protrusions.

[0011] The cam table is slidably sleeved on the cam shaft, a plurality of second protrusions are arranged on the cam table, and the upper ends of the plurality of second protrusions are slidably matched in the plurality of longitudinal rails respectively; the upper end surface of the second protrusion is also arranged in an inclined manner, the inclination of the upper end surface of the second protrusion is the same as that of the second inclined surface, and the inclination of the upper end surface of the second protrusion is the same as that of the first inclined surface.

[0012] The second sleeve is arranged on the base, the first sleeve is slidably sleeved on the second sleeve, the first sleeve is slidably arranged in the limiting sleeve, the upper end of the first sleeve is close to the lower end of the cam table, the cam shaft penetrates out of the first sleeve and enters the second sleeve, and the two ends of the compression spring a are connected to the bottom end and the top end of the first sleeve respectively, and the compression spring a is also sleeved on the cam shaft.

[0013] Preferably, the circuit contact mechanism comprises a movable contact piece assembly and a fixed contact piece assembly, the movable contact piece assembly is composed of two Z-shaped movable contact pieces, the two Z-shaped movable contact pieces are arranged on the surface of the first sleeve and are arranged in a central symmetry, the fixed contact piece assembly is composed of two groups of fixed contact pieces, each group of fixed contact pieces corresponds to the two Z-shaped movable contact pieces, each group of fixed contact pieces is provided with three fixed contact pieces, and the three fixed contact pieces in each group are respectively corresponding to the front part, the middle part and the tail part of the corresponding Z-shaped movable contact piece.

[0014] Preferably, the limiting sleeve is composed of an upper sleeve and a lower sleeve, the longitudinal rails are arranged on the upper sleeve, the inner diameter length of the upper sleeve is smaller than that of the lower sleeve, and the longitudinal rails are communicated with the lower sleeve.

[0015] Preferably, a compression spring b is arranged in the second sleeve, one end of the compression spring b is sleeved on the cam shaft, and the other end is connected to the bottom of the second sleeve.

[0016] Preferably, a clamping groove is formed in the upper end surface of the cam shaft, and the lower end of the handle is clamped and matched with the clamping groove.

[0017] Preferably, a clamping ring is sleeved on the middle part of the cam shaft.

[0018] The beneficial effects of the utility model lie in:

[0019] 1, the initial state, after rotating the handle, drive the grating to rotate, so that the circuit module output encoding signal, the middle and tail of Z-shaped moving contact piece and the corresponding fixed contact piece are in contact, a group of circuits are in communication state; press the handle to push the cam shaft and the cam table along the longitudinal guide rail downward, after pressing to a certain stroke, the compression spring A is compressed, so that the cam table slides out of the longitudinal guide rail, the upper end inclined surface of the plurality of second protrusions on the cam table slides into the first second inclined surface adjacent to the first protrusion, the cam table realizes relative rotation, and then the compression spring A pushes the cam table upward to push the second protrusion onto the first inclined surface and be clamped by the protrusion, realizing the locking of the cam table, the first sleeve drives the Z-shaped moving contact piece to move downward and makes the front and middle of the moving contact piece contact with the corresponding fixed contact piece, and the other group of circuits is in communication state, so as to realize the switching of two groups of circuits;

[0020] Press the handle again to push the cam shaft and the cam table to continue to slide downward, so that the upper end of the second protrusion exceeds the protrusion, and the cam table is pushed upward by the compression spring A, so that the second protrusion slides into the second second inclined surface position, the cam table rotates again, so that the second protrusion jumps over the protrusion and returns to the longitudinal guide rail along the first inclined surface, the cam shaft and the cam table return to the initial state, the contact mechanism returns to the initial state, and the two groups of circuits are switched again to realize the switching of multiple groups of circuits, so that the encoder function can meet more use functions.

[0021] 2, by adding the compression spring B, the whole pressing stroke of the structure is increased, and better pressing feeling can be brought. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 is a structural schematic diagram of the utility model;

[0023] Figure 2 is a sectional structure schematic diagram of the utility model;

[0024] Figure 3 is a partial structure schematic diagram of the utility model in which the first shell, the second shell and the limiting sleeve are hidden;

[0025] Figure 4 is a sectional structure schematic diagram of the limiting sleeve in the utility model;

[0026] In the figure: 1-handle; 2-shaft sleeve; 3-first shell; 4-circuit module; 5-bow spring piece; 6-optical raster; 7-camshaft; 8-cam table; 9-limit sleeve; 91-upper sleeve; 92-lower sleeve; 10-press spring A; 11-press spring B; 12-moving contact piece assembly; 121-Z-shaped moving contact piece; 13-fixed contact piece assembly; 14-fixed contact piece; 15-second shell; 16-base; 17-first sleeve; 18-second sleeve; 19-longitudinal guide rail; 20-first protrusion; 21-second protrusion; 22-second inclined surface; 23-clamping groove; 24-clamping ring; 25-first inclined surface; 26-protruding block. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0028] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present application are only used to explain the relative positional relationship, movement condition, etc. between components in a certain specific posture (as shown in the drawings), and if the specific posture changes, the directional indications will also change accordingly.

[0029] In the embodiment, an encoder with a pressing locking function comprises an encoding input module and a circuit contact module, the encoding input module is installed at the upper end of the circuit contact module, and the encoding input module realizes signal output through the circuit contact module.

[0030] In the embodiment, referring to Figure 1 and Figure 2 , the encoding input module comprises a first shell 3, a circuit module 4, a shaft sleeve 2, a handle 1, an optical raster 6 and a bow spring piece 5, and the circuit module 4 is installed on the first shell 3; the circuit module 4 comprises a transmitting plate and a receiving plate, two light-emitting diodes are installed on the transmitting plate, a photosensitive triode is installed on the receiving plate, and the transmitting plate and the receiving plate are respectively installed on the upper and lower sides of the first shell 3;

[0031] The handle 1 is arranged from top to bottom in the circuit module 4 and located at the upper end of the circuit contact module, the shaft sleeve 2 is sleeved on the upper segment of the handle 1, the optical raster 6 is sleeved on the handle 1 and located between the transmitting plate and the receiving plate, the outer ring of the optical raster 6 is provided in the form of a gear, the bow spring piece 5 is installed on the inner side of the first shell 3, the gear rack of the outer ring of the optical raster 6 is adapted to be clamped with the bow spring piece 5, two light-transmitting small holes are arranged on the first shell 3, and the two light-transmitting small holes correspond to the photoelectric conversion device in the circuit module 4 and the code channel of the optical raster 6 respectively.

[0032] When the handle 1 is rotated, the grating 6 is rotated and the arc spring sheet 5 is pressed to jump rotation, the grating 6 code channel order blocks the light hole, so that the photosensitive triode receives the light emitted by the light emitting diode in order, and the photoelectric conversion is carried out to realize the output function of the coded signal.

[0033] In the embodiment, referring to Figure 1 and Figure 2 , the circuit contact module is composed of a second shell 15, a base 16, a pressing locking mechanism and a circuit contact mechanism, the second shell 15 is located at the lower end of the first shell 3, the second shell 15 is integrally formed with the first shell 3, the second shell 15, the pressing locking mechanism and the circuit contact mechanism are all installed on the upper end of the base 16, and the pressing locking mechanism and the circuit contact mechanism are also arranged in the second shell 15, there are two groups of communication circuits in the circuit contact mechanism, and the pressing locking mechanism is used for switching the two groups of communication circuits in the circuit contact mechanism.

[0034] In the embodiment, referring to Figure 1 and Figure 2 , Figure 3 and Figure 4 , the pressing locking mechanism comprises a limiting sleeve 9, a cam shaft 7, a cam table 8, a first sleeve 17, a second sleeve 18 and a compression spring A 10;

[0035] The limiting sleeve 9 is embedded in the second shell 15, a plurality of longitudinal guide rails 19 are formed on the upper end of the limiting sleeve 9, a first inclined surface 25 is arranged beside the bottom end of the longitudinal guide rail 19, a lug 26 is arranged in the middle of the first inclined surface 25, and the bottom end and the top end of the first inclined surface 25 are connected with the adjacent two longitudinal guide rails 19 respectively;

[0036] A clamping groove 23 is formed on the upper end surface of the cam shaft 7, the lower end of the handle 1 is clamped and matched with the clamping groove 23, so as to facilitate the positioning and connection of the handle 1 on the cam shaft 7, the cam shaft 7 is slidingly arranged in the limiting sleeve 9, the upper end of the cam shaft 7 is arranged in an umbrella shape, a plurality of first protrusions 20 are arranged on the umbrella surface end of the cam shaft 7 in the circumferential direction, the plurality of first protrusions 20 are slidingly matched in the plurality of longitudinal guide rails 19 respectively, and two second inclined surfaces 22 are continuously arranged beside the first protrusions 20 at the end of the umbrella surface end of the cam shaft 7;

[0037] The cam table 8 is slidingly sleeved on the cam shaft 7, a plurality of second protrusions 21 are arranged on the cam table 8, and the upper ends of the plurality of second protrusions 21 are slidingly matched in the plurality of longitudinal guide rails 19 respectively; the upper end surface of the second protrusion 21 is also arranged in an inclined manner, the inclination of the upper end surface of the second protrusion 21 is the same as that of the second inclined surface 22, and the inclination of the upper end surface of the second protrusion 21 is the same as that of the first inclined surface 25;

[0038] The second sleeve 18 is installed on the base 16, the first sleeve 17 is sleeved on the second sleeve 18, the first sleeve 17 is slidingly arranged in the limiting sleeve 9, the upper end of the first sleeve 17 is close to the lower end of the cam platform 8, the cam shaft 7 penetrates out of the first sleeve 17 and enters the second sleeve 18, and the two ends of the compression spring A 10 are connected to the bottom end and the top end of the first sleeve 17 respectively, and the compression spring A 10 is also sleeved on the cam shaft 7.

[0039] In order to further prolong the pressing stroke, in the embodiment, referring to Figure 2 , the second sleeve 18 is provided with a compression spring B 11, one end of the compression spring B 11 is sleeved on the cam shaft 7, and the other end is connected to the bottom of the second sleeve 18, so that the whole pressing stroke of the structure is increased through the cooperation of the compression spring A 10 and the compression spring B 11, and better pressing feeling can be brought.

[0040] The working principle of the whole pressing locking mechanism is as follows: the pressing handle 1 drives the cam shaft 7 to drive the cam platform 8 to move downward along the longitudinal guide rail 19, after pressing to a certain stroke, the compression spring A 10 and the compression spring B 11 are compressed, so that the cam platform 8 slides out of the longitudinal guide rail 19, the upper end inclined surface of the plurality of second protrusions 21 on the cam platform 8 slides into the first second inclined surface 22 adjacent to the first protrusion 20, the cam platform 8 is relatively rotated, and then the cam platform 8 is pushed upward by the reaction force of the compression spring A 10 and the compression spring B 11 to push the second protrusion 21 to the first inclined surface 25 and be clamped by the protruding block 26, so that the cam platform 8 is locked.

[0041] The pressing handle 1 drives the cam shaft 7 to continue to slide downward, so that the upper end travel stroke of the second protrusion 21 exceeds the protruding block 26, the cam platform 8 is pushed upward by the compression spring A 10 and the compression spring B 11, so that the second protrusion 21 slides into the second second inclined surface 22 position, the cam platform 8 is rotated again, so that the second protrusion 21 jumps over the protruding block 26 and returns to the longitudinal guide rail 19 along the first inclined surface 25, and the cam shaft 7 and the cam platform 8 return to the initial state.

[0042] In the embodiment, the limiting sleeve 9 is composed of an upper sleeve 91 and a lower sleeve 92, the longitudinal guide rail 19 is installed on the upper sleeve 91, the inner diameter length of the upper sleeve 91 is less than that of the lower sleeve 92, the longitudinal guide rail 19 communicates with the lower sleeve 92, and the first sleeve 17 is limited in the lower sleeve 92.

[0043] In the embodiment, a clamping groove is formed around the middle part of the cam shaft 7, the clamping groove is located in the first sleeve 17, and a clamping ring 24 is sleeved on the clamping groove, so that the first sleeve 17 is limited to a certain extent by the clamping ring 24, the downward displacement distance of the first sleeve 17 is prevented from being too long, and the accurate conversion of the communication circuit is ensured.

[0044] In the embodiment, referring toFigure 2 and Figure 3 The contact mechanism comprises the movable contact piece assembly 12 and the fixed contact piece assembly 13, the movable contact piece assembly 12 is composed of two Z-shaped movable contact pieces 121, the two Z-shaped movable contact pieces 121 are symmetrically arranged at the surface of the first sleeve 17; the fixed contact piece assembly 13 is composed of two groups of fixed contact pieces 14, the two groups of fixed contact pieces 14 correspond to the two Z-shaped movable contact pieces 121 respectively, each group of fixed contact pieces 14 is provided with three fixed contact pieces 14, and the fixed contact pieces 14 are all arranged on the base 16, and the three fixed contact pieces 14 in each group correspond to the front part, the middle part and the tail part of the corresponding Z-shaped movable contact piece 121 respectively.

[0045] The working principle of the embodiment is as follows: in the initial state, when the handle 1 is rotated, the grating 6 is rotated and presses the bow spring piece 5 to jump and rotate, the grating 6 orderly blocks the light transmission hole, the photosensitive triode orderly receives the light emitted by the light emitting diode, photoelectric conversion is carried out, and the output function of the coded signal is realized, the middle part and the tail part of the Z-shaped movable contact piece 121 are in contact with the corresponding fixed contact piece 14, and one group of circuits is in a communication state;

[0046] When the handle 1 is pressed to push the cam shaft 7 and the cam table 8 along the longitudinal guide rail 19 to move downwards, after being pressed to a certain stroke, the compression spring A 10 and the compression spring B 11 are compressed, the cam table 8 slides out of the longitudinal guide rail 19, the upper end inclined surface of the plurality of second protrusions 21 on the cam table 8 slides into the first second inclined surface 22 adjacent to the first protrusion 20, the cam table 8 is relatively rotated, and the cam table 8 is pushed upwards by the reaction force of the compression spring A 10 and the compression spring B 11 to push the second protrusion 21 to the first inclined surface 25 and be clamped by the protruding block 26, the locking of the cam table 8 is realized, another group of circuits is in a communication state, and the switching of the two groups of circuits is realized;

[0047] When the handle 1 is pressed again to push the cam shaft 7 and the cam table 8 to continue to slide downwards, the upper end running stroke of the second protrusion 21 exceeds the protruding block 26, the cam table 8 is pushed upwards by the compression spring A 10 and the compression spring B 11, the second protrusion 21 slides into the second second inclined surface 22, the cam table 8 is rotated again, the second protrusion 21 jumps over the protruding block 26 and returns to the longitudinal guide rail 19 along the first inclined surface 25, the cam shaft 7 and the cam table 8 return to the initial state, the first group of circuits returns to the communication state, and the switching of the two groups of circuits is realized again.

[0048] The preferred embodiments are only used for the utility model, and do not limit the patent range of the utility model, and equivalent structural transformation, direct / indirect application in other related technical fields by using the utility model specification and the attached drawings within the concept of the utility model are included in the patent protection range of the utility model.

Claims

1. An encoder with a press-lock function, characterized in that: It includes an encoding input module and a circuit contact module. The encoding input module is installed on the upper end of the circuit contact module. The circuit contact module consists of a second housing (15), a base (16), a pressing and locking mechanism, and a circuit contact mechanism. The second housing (15), the pressing and locking mechanism, and the circuit contact mechanism are all installed on the upper end of the base (16). At the same time, the pressing and locking mechanism and the circuit contact mechanism are set inside the second housing (15). There are two sets of connected circuits in the circuit contact mechanism. The pressing and locking mechanism is used to switch the two sets of connected circuits in the circuit contact mechanism.

2. An encoder with a press-lock function as described in claim 1, characterized in that: The encoding input module includes a first housing (3), a circuit module (4), a bushing (2), a handle (1), a grating (6), and a bow spring (5). The first housing (3) is installed on the upper end of the second housing (15), and the circuit module (4) is installed on the first housing (3). The handle (1) passes through the circuit module (4) from top to bottom and is located on the upper end of the second housing (15). The bushing (2) is sleeved on the handle (1). The grating (6) is sleeved on the handle (1) and is located between the upper and lower ends of the first housing (3). The outer ring of the grating (6) is gear-shaped. The bow spring (5) is installed on the inner side of the first housing (3). The rack of the outer ring of the grating (6) is engaged with the bow spring (5). The first housing (3) has two light-transmitting holes, which correspond to the photoelectric conversion device in the circuit module (4) and the code track of the grating (6), respectively.

3. An encoder with a press-lock function as described in claim 1, characterized in that: The pressing and locking mechanism includes a limiting sleeve (9), a camshaft (7), and a cam table (8). First sleeve (17), second sleeve (18) and compression spring (10); The limiting sleeve (9) is embedded inside the second outer shell (15). Multiple longitudinal guide rails (19) are provided at the upper end of the limiting sleeve (9). A first inclined surface (25) is provided near the bottom end of the longitudinal guide rail (19) of the limiting sleeve (9). A protrusion (26) is provided in the middle of the first inclined surface (25). The bottom end and top end of the first inclined surface (25) are respectively connected to two adjacent longitudinal guide rails (19). The camshaft (7) is slidably disposed in the limiting sleeve (9). The upper end of the camshaft (7) is configured as an umbrella shape. Multiple first protrusions (20) are installed circumferentially on the umbrella end of the camshaft (7). The multiple first protrusions (20) are respectively slidably adapted to multiple longitudinal guide rails (19). Two second inclined surfaces (22) are continuously provided on the end of the umbrella end of the camshaft (7) near the first protrusions (20). The cam stage (8) is slidably sleeved on the camshaft (7). Multiple second protrusions (21) are installed on the cam stage (8). The upper ends of the multiple second protrusions (21) are respectively slidably adapted to multiple longitudinal guide rails (19). The upper end surface of the second protrusion (21) is also inclined. The inclination of the upper end surface of the second protrusion (21) is the same as the inclination of the second inclined surface (22). The inclination of the upper end surface of the second protrusion (21) is the same as the inclination of the first inclined surface (25). The second sleeve (18) is installed on the base (16), the first sleeve (17) is slidably sleeved on the second sleeve (18), the first sleeve (17) is slidably set in the limiting sleeve (9), the upper end of the first sleeve (17) is close to the lower end of the cam table (8), the camshaft (7) passes through the first sleeve (17) and enters the second sleeve (18), the two ends of the compression spring (10) are respectively connected to the bottom end and the top end of the first sleeve (17), and the compression spring (10) is also sleeved on the camshaft (7).

4. An encoder with a press-lock function as described in claim 3, characterized in that: The circuit contact mechanism includes a moving contact assembly (12) and a fixed contact assembly (13). The moving contact assembly (12) consists of two Z-shaped moving contacts (121), both of which are mounted on the surface of the first sleeve (17) and are arranged in a centrally symmetrical manner. The fixed contact assembly (13) consists of two sets of fixed contacts (14), each of which corresponds to one of the two Z-shaped moving contacts (121). Each set of fixed contacts (14) has three fixed contacts, all of which are mounted on the base (16). The three fixed contacts (14) in each set correspond to the front, middle, and rear parts of the corresponding Z-shaped moving contacts (121).

5. An encoder with a press-lock function as described in claim 3, characterized in that: The limiting sleeve (9) consists of an upper sleeve (91) and a lower sleeve (92). The longitudinal guide rail (19) is installed on the upper sleeve (91). The inner diameter of the upper sleeve (91) is smaller than that of the lower sleeve (92). The longitudinal guide rail (19) is connected to the lower sleeve (92).

6. An encoder with a press-lock function as described in claim 3, characterized in that: The second sleeve (18) is provided with a compression spring B (11), one end of which is sleeved on the camshaft (7) and the other end is connected to the bottom of the second sleeve (18).

7. An encoder with a press-lock function as described in claim 3, characterized in that: The upper end face of the camshaft (7) is provided with a slot (23), and the lower end of the handle (1) is engaged with the slot (23).

8. An encoder with a press-lock function as described in claim 3, characterized in that: A retaining ring (24) is fitted in the middle of the camshaft (7).

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